ViaLiteHD RF Fibre Optic Link

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1 ViLiteHD RF Fibre Optic Link User Guide HRx-HB-7 CR /01/2017 Pulse Power & Mesurement Ltd, 65 Shrivenhm Hundred Business Prk, Wtchfield, Swindon, Wiltshire SN68TY, UK Tel +44 (0) Fx +44 (0) Emil Web

2 Instrument Cre nd Sfety Informtion Plese red the whole of this section before using your ViLiteHD product. It contins importnt sfety informtion nd will enble you to get the most out of your Fibre Optic Link. Electricl Sfety The ViLiteHD chssis is Sfety Clss 1 product (hving metl cse directly connected to erth vi the power supply cble). When operting the equipment note the following precutions: Hzrdous voltges exist within the equipment. There re no user serviceble prts inside; the covers should only be removed by qulified technicin. There re no user replceble fuses in the chssis mounted equipment. Replcement should only be crried out by ViLite Communictions technicin. The chssis erth stud SHOULD be connected to the sfety erth. When using 2 pin power supply cble the chssis erth stud MUST be connected to the sfety erth. The ViLiteHD Power Supply Modules do not hve n isolting switch on the mins voltge inlet. For this reson, the ViLiteHD Chssis must be instlled within esy rech of clerly lbelled dul pole mins isoltion switch, which supplies the equipment. ESD Precutions The ViLiteHD RF Fibre Optic Link is equipped with high frequency ctive electronics, without the correct hnding they will be susceptible to dmge. Precutions for hndling electro-sttic sensitive devices should be observed when hndling ll ViLiteHD modules. Technicins should ensure tht they use effective personl grounding (i.e. ESD wrist strp etc.) when servicing the equipment. Any equipment or tools used should be grounded to prevent sttic chrge build-up. Good prctice should be observed t ll times for reference see relevnt stndrds. EN , Protection of Electronic Devices from Electrosttic Phenomen Generl Requirements Opticl Sfety The ViLiteHD RF Fibre Optic Trnsmitters, Dul Trnsmitters nd Trnsceivers contin opticl sources (usully lser diodes) operting t nominl wvelengths of 1270nm to 1610nm. These devices re rted s EN :2007 s CLASS 1 rdition emitting devices. A clss 1 lser is sfe under ll conditions of norml use. When operting the equipment note the following precutions: Never look into the end of n opticl fibre directly or by reflection either with the nked eye or through n opticl instrument. Never leve equipment with rditing bre fibres lwys cp the connectors. Do not remove equipment externl covers when operting. 2

3 TABLE OF CONTENTS 1 INTRODUCTION Typicl deployment Cre of fibre optic connectors ViLiteHD nd ViLite Clssic comptibility SETTING UP AND UNDERSTANDING THE FIBRE OPTIC LINK Module opertion HP stndrd plug-in modules HP blindmte plug-in modules Blue link modules Yellow link modules Fibre optic cble & connectors Connector nd cble types Connecting nd disconnecting Clening opticl connectors, clening before every use Clening opticl connectors, high levels of contmintion FC/APC Connectors E2000/APC Connectors SC/APC Connectors (fitted to stndrd modules) SC/APC Connectors (fitted to blindmte modules) LC/APC Connectors Minimum bend rdius Using the RF link module Connecting the module Front pnel indictors, plug-in modules LED indictor, Blue link nd Yellow link modules Module summry lrm Connecting to the summry lrm Received light level RLL lrm Module nlogue monitor RF connectors RF test ports RF nd opticl rer input nd output ports Single function RF nd opticl rer input nd output ports Lbelling convention for Dul chnnel WDM/CWDM units Diplexed RF rer input nd output ports WDM combined opticl rer input nd output ports Seprte blindmte pnels Digitl signl ports Controlling RF modules Mnul control, MGC Mnul control, DIP switch functions DIP switches - receiver MGC DIP switches - trnsmitter MGC Mnul gin control exmple DIP switches - control Chnging module RF gin Softwre control - vi SNMP controller LNA/LNB feed LNA/LNB feed - trnsmitter modules LNA/LNB feed efficiency - plug-in modules LNA/LNB voltge boost - plug-in modules Externl voltge feeds on low frequency cpble TX modules LNA/LNB Feeds - dul trnsmitter modules LNA feed - Blue link nd Yellow link modules LNA feed Low frequency T module LNA feed Voltge versus current chrcteristic BUC feed BUC feed - receiver modules BUC feed - dul receiver modules BUC voltge boost - plug-in modules Mnul configurtion of LNA/LNB nd BUC feeds, plug-in modules Digitl chnnel opertion GPS mode opertion GPS trnsmitter mode opertion GPS receiver mode opertion, units equipped with GPS lod simultor Operting in gin control modes High power nd DWDM trnsmitter modules High power nd DWDM trnsmitter modules, therml lod L-Bnd HTS + reference modules L-Bnd HTS + reference downlink

4 L-Bnd HTS + reference uplink Susceptibility to DC pulses from ViLiteHD receivers Protection of ViLiteHD equipment from DC pulses Low frequency extension for IRIG nd timing ppliction Module Interfce rtings Logic interfce, TTL 5V Logic interfce, RS Logic interfce, RS422/ Logic interfce, I2C Logic interfce, Open Drin, output Power interfce, +12V, input Anlogue interfce, lser diode bis, output Anlogue interfce, photodiode received light level, output Internlly generted LNB power supply nd tone RF connectors Opticl connections Logic interfce, TX_AGC_ON nd RX_AGC_ON (Yellow link nd Blue link modules) SYSTEM INTEGRATION Link loss budget clcultions Opticl loss versus gin Opticl loss versus noise figure Gin versus frequency response P1dB versus trnsmitter gin P1dB versus receiver gin P1dB, key observtions Noise figure versus trnsmitter gin Noise figure versus receiver gin Noise figure, key observtions Link IP Spurious free dynmic rnge Phse noise Link dely Group dely Effects of temperture Effect of temperture on gin Effect of temperture on noise figure Effect of temperture on P1dB RF isoltion RF isoltion, plug-in nd blindmte crds RF isoltion, plug-in nd blindmte crds, within module RF isoltion, plug-in nd blindmte crds, between modules RF isoltion, Blue link nd Yellow link crds mounted in other ViLite enclosures nd Hrmonic rejection Typicl system configurtion with fixed gin modules Commissioning of communictions link MECHANICAL DETAILS Shock nd vibrtion Electricl interfces Signl description, lphbetic Plug-in module, 9 wy D type module connector Plug-in module, Chssis interfce connectors Blue link nd Yellow link module, TX Blue link nd Yellow link module, RX Physicl interfces Plug-in nd Blindmte modules Plug-in module - dimensions Plug-in module connections, 9 wy D type Plug-in module connections, bckplne I2C Blue link module connections Blue link module dimensions Blue link module, connections Blue link mounting dimensions, with rer plte Blue link mounting dimensions, without rer plte Yellow link module connections Yellow link module - dimensions Yellow link - connections PART NUMBERING Prt numbering mtrix Prt numbering, DWDM wvelengths TECHNICAL SPECIFICATIONS Technicl specifiction - L-Bnd HTS link ( MHz) externl LNB feed Technicl specifiction - L-Bnd HTS link ( MHz) internl LNB feed

5 6.3 Technicl specifiction - L-Bnd HTS link ( MHz) dul isolted trnsmitter Technicl specifiction - UHF/VHF link ( MHz) (0dB gin link) Technicl specifiction - UHF/VHF link ( MHz) (9dB gin link) Technicl specifiction - Ultr wide bnd link (2kHz-4.2GHz) Technicl specifiction - Wide bnd RF + Digitl Link (10MHz-4.2GHz) Technicl specifiction - GPS Link Technicl specifiction - Low frequency timing link (10kHz-50MHz) Technicl specifiction - DVBT link ( MHz) (0dB gin link) Technicl specifiction 70/140MHz IF link (10-200MHz) Technicl specifiction Receive pth L-Bnd HTS + reference link ( MHz) internl LNB feed Technicl specifiction Trnsmit pth L-Bnd HTS + reference link ( MHz) externl feed Technicl specifiction - L-Bnd HTS link ( MHz) High power DWDM TX nd RX Technicl specifiction - L-Bnd HTS link ( MHz) High power DWDM TX nd stndrd RX Technicl specifiction - Wide bnd link (10MHz-3000MHz) MAINTENANCE AND FAULT FINDING GUIDE PRODUCT WARRANTY FCC APPROVAL

6 1 Introduction The ViLiteHD RF Fibre Optic Links (FOLs) re fmily of fibre opticlly coupled link systems designed for the trnsmission of RF nlogue signls over long distnces for the communictions mrket. ViLiteHD is product brnd mnufctured by Pulse Power nd Mesurement Ltd (PPM). ViLite Communictions is division of Pulse Power nd Mesurement Ltd (PPM). This hndbook covers the following ViLiteHD RF Link prt numbers: Trnsmitter modules (electricl opticl converter) with prt numbers strting o HRT Receiver modules (opticl - electricl converter) with prt numbers strting o HRR Trnsceiver modules (opticl - electricl converter + electricl opticl converter) with prt numbers strting o HRX Dul Receiver modules (opticl - electricl converter + opticl - electricl converter) with prt numbers strting o HRV Dul Trnsmitter modules (electricl opticl converter + electricl opticl converter) with prt numbers strting o HRU For complete informtion nd product fmiliristion, this hndbook should be red in conjunction with ll other relevnt hndbooks for your ViLiteHD system. 1.1 Typicl deployment A typicl system opertes s follows. The user s RF electricl signl is input to the trnsmitter module, which contins RF signl conditioning nd lser control circuitry. The module modultes the intensity of bem of light with the RF signl. The light trvels through n opticl fibre to the receiver module. The distnce between trnsmitter nd receiver cn rnge from 1m to 100km; distnce in excess of 100km cn be chieved with more complex opticl trnsport systems, depending on the system specified. The receiver module converts the modulted light bck into n electricl signl, which is vilble t the output of the module. 1.2 Cre of fibre optic connectors When the fibre optic cbles re not connected, it is essentil tht the cble nd equipment connectors re protected by the dust cps provided with the system. Filure to do so my result in dmge to the fibre ends, which re criticl to the system performnce. Plese refer to section 2.2 for fibre optic cble hndling detils. 1.3 ViLiteHD nd ViLite Clssic comptibility The RF nd opticl interfces of most ViLiteHD nd ViLite Clssic re comptible. However the physicl size, mounting systems nd control of the modules re different, so it will not be possible to fit ViLiteHD modules in ViLite Clssic chssis or housing nd vice vers. However it is possible for chssis of different types to interwork nd be used to expnd existing systems. Listed below is brief summry of inter fmily comptibility. RF links Comptible opticl nd RF interfces RF + digitl Comptible opticl nd RF interfces o RS232 Comptible opticl (check impct on opticl link budget) nd digitl interfces o RS422 Comptible opticl (check impct on opticl link budget) nd digitl interfces o RS485 Comptible opticl (check impct on opticl link budget) nd digitl interfces Ethernet Modules of mtching speed hve comptible opticl nd digitl interfces Switch Comptible RF interfces my need interfce cble (no opticl interfce) Splitters Comptible RF interfces Amplifier Comptible RF interfces Oscilltor Comptible RF interfces SNMP RJ45 interfces mybe connected, control interfce is not comptible, Contct ViLite Communictions or your locl ViLite gent for more detils. 6

7 2 Setting up nd understnding the fibre optic link This section describes the connections between your RF fibre optic trnsmitter (electricl opticl converter) nd receiver (opticl - electricl converter) modules, nd the opertion of both modules in system. Plese red fully ll relevnt documents for informtion on instlling your ViLiteHD equipment before commissioning your RF fibre optic link system. 2.1 Module opertion HP stndrd plug-in modules All ViLiteHD plug-in modules re hot-swppble, so it is not necessry to power-down the chssis before inserting module. All stndrd opticl connectors re retined by the module, so it will be necessry to either disconnect ny cbles or hve sufficiently long service loop when removing modules. To instll 5HP stndrd module nd mtching interfce plte The protective covers on the connectors my be left in plce. Push the relese button of the module hndle down nd simultneously pull the top of the hndle towrds you. Align the module upright nd perpendiculr to the front fce of the chssis so tht the PCB slides into the crow s feet crd guides top nd bottom. Gently push the module down its guide, pplying pressure vi the hndle, you my lso pply pressure between the LED nd test connector (where test connector is fitted s these re not vilble on ll module types). As the module is fully mted the top of the hndle should snp bck nd lock in position. The pwls of the hndle should be fully engged in the mtching slots. If power is pplied to the chssis the module power LED should light s soon s the module is fully inserted Remove protective covers nd connect ny interfce cbles To remove 5HP Stndrd module Disconnect ny cbles if necessry Push the relese button of the module hndle down nd simultneously pull the top of the hndle forwrds. Apply pressure vi the hndle nd gently withdrw the module from the chssis. 7

8 HP blindmte plug-in modules All ViLiteHD plug-in modules re hot-swppble, so it is not necessry to power-down the chssis before inserting module. All blindmte opticl connectors re provided with spring loded covers tht will protect the optics of ny inserted modules. As there is no cover on the opposite side, mting cbles should not be instlled until the slot modules re present. To instll blindmte module nd mtching interfce plte Firstly inspect the rer blind-mting plte [1], ensure tht the connector brrels re fitted into ll RF connectors nd re centrlly ligned. Remove protective covers from the inside fce of the opticl connector if fitted. Ensure tht the rer plte is free of ny dust nd contmintion, if necessry clen with filtered compressed ir. Screw the blind-mting plte into the pproprite slot t the rer of the chssis, using the supplied screws nd Pozidriv Number 1 screwdriver [2] Push the relese button of the module hndle down nd simultneously pull the top of the hndle towrds you. Remove the protective cover from the modules opticl connectors nd clen ny opticl connectors [3] Align the module upright nd perpendiculr to the front fce of the chssis so tht the PCB slides into the crow s feet crd guides top nd bottom. Gently push the module down its guide, pplying pressure vi the hndle (without locking it), you my lso pply pressure between the LED nd test connector (where test connectors re fitted s these re not vilble on ll module types) [4]. As the module is fully mted the top of the hndle should snp bck nd lock in position. The pwls of the hndle should be fully engged in the mtching slots. If power is pplied to the chssis the module power LED should light s soon s the module is fully inserted. Connect ny interfce cbles to the blind mte plte, t the rer of the chssis. [1] [2] [3] [4] To remove blindmte module Push the relese button of the module hndle down nd simultneously pull the top of the hndle towrds you. Apply pressure vi the hndle nd gently withdrw the module from the chssis. Check tht the RF mting brrel is retined by the chssis blind-mting plte All cbles with be retined by the chssis cse. Note: if modules re bsent for n extended period there is chnce of the opticl fibres being contminted s the opticl mting interfce is unprotected. If this hppens it will be necessry to clen both the blind-mting dptor nd fibre optic cble. 8

9 2.1.3 Blue link modules The Blue link module is fully enclosed nd built with connectorised interfces with electromgnetic shielding. This llows system integrtors nd equipment mnufcturers n esy route to build RF/opticl interfces into their own equipment. The smll form fctor nd integrted design should llow the module to be esily integrted into end user equipment Yellow link modules The very smll form fctor Yellow link module hs n edge connector for DC nd lrm connections, n integrted RF shield, nd very smll overll form fctor. This llows system integrtors nd equipment mnufcturers to very simply integrte this on motherbord giving n esy route to build RF/opticl interfces into their own design. The low volume of this module llows it to esily be fitted into existing mechnicl housings. 9

10 2.2 Fibre optic cble & connectors Connector nd cble types All ViLiteHD RF modules use singlemode (9µm/125µm) cble terminted in rnge of opticl connectors detiled below. Cross-site fibre optic cbles re vilble from ViLite Communictions s either stndrd ptch leds or hevy-duty multicore cbles. Wrning! Angle polished (APC) nd stndrd (PC) connector must not be confused. The two connector-types re not interchngeble nd mting one with the other will dmge both the cble nd the module connectors. Wrning! The specifiction of opticl connector is criticl to the performnce of the complete fibre optic link. System performnce cn only be gurnteed with fibre optic cbles nd connectors supplied by ViLite Communictions. When FC/APC connectors re specified they must be nrrow key width Connecting nd disconnecting Before connecting opticl fibres to the module or to ech other, ensure tht the mting connectors re clen (see below) Clening opticl connectors, clening before every use Opticl connectors MUST be clened before use, even where they hve been protected with dust cps. Most performnce issues re due to dirty fibres. - Peel the plstic cover from n unused N clening pd. - Hold the connector between your thumb nd forefinger Clen the connector using firm pressure by swiping in pendulum motion through ech segment of the N shpe, following the digrm - Do not swipe over the sme spce twice. For more detils plese red the clening instruction which ccompnies the connector clening kit. Detils cn lso be found on the CD supplied with your equipment Clening opticl connectors, high levels of contmintion If there re performnce issues tht re not resolved by bsic clening in section 2.2.3, then the following procedure should be used. If the level of contmintion is high it will be necessry to repet this procedure. Clening items required Lint free fibre clening tissues nd/or clening sticks (norml cosmetic tissues produce dust nd re not cceptble). Regent grde Iso Propyl Alcohol (IPA). Air duster or filtered compressed ir line. Cble Connector Clening Dmpen ptch of clening tissue with IPA nd clen ll surfces of the plug ferrule. Using dry clening tissue, dry the ferrule nd clen the end fce. Using the ir duster, blow wy ny residue from the end of the connector. Module Femle Receptcle Clening (only recommended if problems re being experienced) Either use n opticl clening stick or twist clening tissue to form stiff probe, moisten either with IPA. Gently push the probe into the receptcle nd twist round severl times to dislodge ny dirt. Repet the bove process with dry tissue. Using the ir duster, blow wy ny residue from the receptcle. Importnt Notes IPA is flmmble. Follow pproprite precutions / locl guidelines when hndling nd storing. IPA cn be hrmful if spilt on skin. Use pproprite protection when hndling. It should only be necessry to clen the femle receptcles on the modules if problems re being experienced. Never inspect n opticl fibre or connector with the nked eye or n instrument unless you re convinced tht there is no opticl rdition being emitted by the fibre. Remove ll power sources to ll modules, nd completely disconnect the opticl fibres. 10

11 FC/APC Connectors All ViLiteHD FC connectorised modules use FC/APC (nrrow key). Clen the plug before inserting see section To connect FC/APC opticl connectors:- Remove the dust cps nd lign the white cermic centre ferrule on the cble connector with the mting receptcle. There is ey (lug) on the side of the ferrule, which must mtch the keywy (gp) in the receptcle shroud. When they re ligned, gently push the plug home. Finger tighten the knurled collet nut onto the threded receptcle. To disconnect:- Using fingers fully unscrew the knurled collet nut, gently withdrw the connector. Replce the dust cps on both the receptcle nd the cble plug. Wrning! It is possible to tighten the knurled collet without ligning the lug nd gp. This will result in poor light trnsmission. Check tht the lug nd gp re ligned before tightening the knurled collet Only connect FC/APC cble to FC/APC modules Locte connector key Align key nd keywy E2000/APC Connectors All ViLiteHD E2000 connectorised modules use E2000/APC. Clen the plug before inserting see section To connect E2000/APC opticl connectors:- Gently push the plug-into the E2000/APC dpter. The cover will utomticlly disengge. Push until click is herd nd the connector locks. To disconnect:- To disconnect, depress the lever t the rer of the connector nd withdrw the connector. The protective cover utomticlly engges when removed. Only connect E2000/APC cble to E2000/APC dptors. 11

12 SC/APC Connectors (fitted to stndrd modules) All ViLiteHD SC connectorised modules use SC/APC. Clen the plug before inserting see section To connect SC/APC opticl connectors:- Remove the plug protective cover. Align the connector keywy slot in the dptor to the key of the plug. Gently push the plug-into the dpter until click is herd nd the connector locks. To disconnect:- grip the body of the plug nd gently pull the plug from the dptor, replce the protective cover. Only connect SC/APC cble to SC/APC SC/APC Connectors (fitted to blindmte modules) All ViLiteHD blindmte connectorised modules use SC/APC opticl connectors on the chssis rer interfce. Clen the plug before inserting see section To connect SC/APC opticl connectors:- Remove the plug protective cover. Open the dptor sprung cover, lign the connector keywy slot in the dptor to the key of the plug. Gently push the plug-into the dpter until click is herd nd the connector locks. To disconnect:- Grip the body of the plug nd gently pull the plug from the dptor, replce the protective cover. The dptor sprung cover, will utomticlly close. Only connect SC/APC cble to blindmte SC. Position of keywy behind protective cover. 12

13 LC/APC Connectors All ViLiteHD LC connectorised modules use LC/APC. Clen the plug, before inserting see section To connect LC/APC opticl connectors:- Remove the plug protective cover. Align the connector ltch to the dptor. Gently push the plug-into the dpter until click is herd nd the ltch locks. To disconnect:- Grip the body of the plug nd push down on the ltch. While holding the ltch down, gently pull the plug from the dptor, replce the protective cover. Only connect LC/APC cble to LC/APC Minimum bend rdius Becuse opticl fibre is mde of glss, it is importnt not to subject it to excessive stress. For this reson, ech type of cble hs minimum bend rdius (MBR) specifiction, beyond which the cble cnnot be bent without permnent dmge occurring. Systems using longer wvelength (i.e. 1550nm) re less tolernt to smll bend rdii. The minimum bend rdius of stndrd SMF28 fibre optic cble fitted to ViLiteHD modules is 50mm. MBR specifictions for ViLite Communictions supplied fibre optic cbles re given in the ViLite Clssic nd ViLiteHD System Hndbooks Lxx-HB nd Hxx-HB respectively. 13

14 2.3 Using the RF link module Connecting the module Connect the trnsmitter module to the power source, cross-site fibre optic cble nd RF signl s described in section 2.1. The RF input signl pplied to the signl connector should be within the mximum nd minimum signl levels given in the technicl specifictions in section Front pnel indictors, plug-in modules Ech plug-in module hs three front pnel LEDs for indiction of the stte of the module. The following tble shows the opertion of the front pnel LEDs which re dependent on module type. Colour Plug-in Single Trnsmitter Plug-in Single Receiver Plug-in Trnsceiver Plug-in Dul Trnsmitter Plug-in Dul Receiver LED1 LED2 GREEN Flshing GREEN Norml Progrmming Progrmming Progrmming Progrmming Progrmming RED Not used Not used TX PSU fil TX2 PSU fil RX2 PSU fil No light TX PSU fil RX PSU fil RX PSU fil TX1 PSU fil RX1 PSU fil GREEN Flshing RED fst Flshing RED slow Norml TX Alrm Not used TX Alrm TX2 Alrm RX2 Alrm Not used RX Alrm RX Alrm TX1 Alrm RX1 Alrm RED Not used Not used All Alrm All Alrm All Alrm LED1 LED2 LED3 LED3 GREEN Flshing GREEN AMBER I2C enbled I2C ctive I2C disbled LED indictor, Blue link nd Yellow link modules These modules re fitted with single LED for indiction of the stte of the module. Colour Blue link Yellow link LED GREEN RED No Light Norml Alrm No power LED LED LED positions for Blue link nd Yellow link modules 14

15 2.3.4 Module summry lrm Ech module hs single summry lrm, which registers the sttus of the module. Activtion of this lrm registers n internl fult nd the module should be replced with spre nd returned to your locl ViLiteHD representtive. The lrm stte should be ccompnied by fult sttus on one of the front pnel sttus LEDs. The summry lrm is indicted by use of open drin logic. The lrm logic is OPEN when in n ALARM stte nd SHORT when in NORMAL (non-lrm) stte. The module will remin in n ALARM stte until the ALARM condition is clered, there is no ltching Connecting to the summry lrm The lrm output pin should be connected to suitble current source ( positive voltge vi 10kohm pull-up resistor is dequte). When the module is in working (non-lrm) stte, the lrm output pin is short circuited to ground by the module. If the module enters n lrm stte, the lrm pin is relesed to high impednce stte nd current is no longer drwn from the constnt current source. In the cse of positive voltge nd pull-up resistor, the voltge on the lrm output pin will rise to indicte the lrm stte. It follows tht, if module is removed from the chssis, the lrm will be rised for tht module position. Internl to module Externl to module Vext Pull up Resistor Alrm Ground The cpbility of the open collector is dependent on the module tht provides it. The typicl cpbility of the Open Collector/Drin is 50mA mximum current sink nd 15V mximum voltge (Vext). Note: Modules fitted in chssis my hve their lrm lines pull up by other chssis equipment, such s switch, splitter, summry lrm or SNMP nd web controller modules Received light level RLL lrm All modules equipped with receivers, monitor the verge incoming received light level (RLL), if the power drops below pre-set threshold the module will generte n RLL lrm. For units with single function opticl port (i.e. without WDM see section ), the pre-set thresholds re shown below The RLL lrm threshold is set for nominl input power of 1310nm o Nominl opticl loss of for stndrd DFB 4.5dBm (3mW) 1310nm o Nominl opticl loss of for stndrd DWDM 7.0dBm (5mW) 1310nm o Nominl opticl loss of for high power DFB 9.0dBm (8mW) 1310nm o Nominl opticl loss of for high power DWDM 10.8dBm (12mW) 1310nm The RLL lrm threshold is set for nominl input power of 1550nm o Nominl opticl loss of for stndrd DFB 4.5dBm (3mW) 1550nm o Nominl opticl loss of for stndrd DWDM 7.0dBm (5mW) 1550nm o Nominl opticl loss of for high power DFB 9.0dBm (8mW) 1550nm o Nominl opticl loss of for high power DFB 10.8dBm (12mW) 1550nm For units with WDM combined opticl ports (see section ), the pre-set thresholds re shown below The RLL lrm threshold is set for nominl input power of 1310nm o Nominl opticl loss of for stndrd DFB 4.5dBm (3mW) 1310nm o Nominl opticl loss of for stndrd DWDM 7.0dBm (5mW) 1310nm o Nominl opticl loss of for high power DFB 9.0dBm (8mW) 1310nm o Nominl opticl loss of for high power DWDM 10.8dBm (12mW) 1310nm The RLL lrm threshold is set for nominl input power of 1550nm o Nominl opticl loss of for stndrd DFB 4.5dBm (3mW) 1550nm o Nominl opticl loss of for stndrd DWDM 7.0dBm (5mW) 1550nm o Nominl opticl loss of for high power DFB 9.0dBm (8mW) 1550nm o Nominl opticl loss of for high power DFB 10.8dBm (12mW) 1550nm Under norml operting conditions the RLL lrm ccurcy is +/-2dB; nd +/-4dB under extreme conditions. 15

16 VRLL (V) VIFL (V) HRX-HB-7 VIALITEHD RF LINK HANDBOOK Module nlogue monitor Ech plug-in module hs either one or two nlogue monitor ports. These llow simple DC indiction of the sttus of either lsers or photodiodes fitted in the RF modules. The nlogue monitor is vilble on the chssis connector, see the chssis hndbook. The nlogue monitor functions re dependent on the type of module. The monitor function(s) provided re shown in the tble below. Function Single Trnsmitter Single Receiver Trnsceiver Dul Trnsmitter Dul Receiver Anlogue monitor A Not Used Received light level Received light level Lser bis monitor1 Received light level1 Anlogue monitor B Lser bis monitor Not Used Lser bis monitor Lser bis monitor2 Received light level2 The performnce of the nlogue monitors is s follows Monitor type TX nlogue, current monitor output Opertion V IFL = 25 x I FWD V IFL = Voltge output of the current monitor, in volts I FWD = Averge bis current of lser diode, in mps Note: Norml operting rnge I FWD is 0 120mA RX nlogue, received light level output V RLL = 4.00 [ 0.15 x ( P OPT ) ] V RLL = Voltge output of the received light level (RLL) monitor, in volts P OPT = Opticl input power, in dbm Note: Opticl trnsmitter power is ssumed to be +4.5dBm for stndrd links VRLL versus Opticl power VIFL versus Lser current Popt (dbm) Ifwd (ma) Anlogue monitor: RLL monitor Anlogue monitor: Lser current RF connectors ViLiteHD products re fitted with rnge of stndrd RF connectors. The RF modules re ll fitted with FEMALE connectors. When connecting the modules ensure tht you hve both the correct type nd impednce of connector. Listed below re the connector types vilble. Front pnel test connectors (optionl on some plug-in nd blindmte modules only) BNC 50 ohms byonet BNC 75 ohms byonet Rer Input / Output connectors, plug-in modules SMA 50 ohms screw on BNC 75 ohms byonet F-Type 75 ohms screw on 16

17 Input / Output connectors Blue link nd Yellow link modules SMA 50 ohms screw on MCX 50 ohms push fit MCX 75 ohms push fit Not ll connector types re vilble on ll types of module. If you re unsure of the connector type your module is fitted with this cn be determined from the prt number (see section 5). Blind-mting modules re fitted with floting RF connector, mting between the plug-in module nd the chssis rer plte. This is purely internl interfce nd should not be connected by ny mens other thn vi the supplied chssis interfce. Wrning! Use of incorrect impednce connectors my lso cuse intermittent connections nd in extreme cses result in physicl dmge to the connector. Wrning! Use of incorrect impednce connector will result in mismtch incresing the system loss nd reducing RF fltness. Wrning! Use of incorrect impednce cble will result in mismtch incresing the system loss nd reducing RF fltness. 17

18 2.3.9 RF test ports Some modules re fitted with RF test ports, these modules will hve one or two test ports. These ports cn be used to provide n indiction of the signls being input nd output from the rer ports without the need to monitor them directly. The RF impednce of the test port mtches tht of the rer connector. Stndrd test ports re either 50 ohm BNC or 75 ohm BNC. A non-stndrd option of 50 ohm SMA is vilble, contct ViLite Communictions for more detils. Test Port A The port lettering convention for front ports mtches tht for rer ports. Port A is lwys the upper port, Port B is lwys the lower port. Function Single Trnsmitter Single Receiver Trnsceiver Dul Trnsmitter Dul Receiver Port A Trnsmitter Receiver Receiver Trnsmitter 1 Receiver 1 Test Port B Port B Not Used Not Used Trnsmitter Trnsmitter 2 Receiver 2 All module types except frequency types J nd K, L-Bnd HTS + Reference. Function L-Bnd HTS + reference J Trnsmitter L-Bnd HTS + reference J Receiver Port A Receiver Reference Receiver L-Bnd HTS Port B Trnsmitter L-Bnd Trnsmitter HTS Reference L-Bnd HTS + reference K Trnsmitter Trnsmitter Reference Trnsmitter L-Bnd HTS L-Bnd HTS + reference K Receiver Receiver Reference Receiver HTS L-Bnd Frequency types J nd K, L-Bnd HTS + Reference modules To minimise the impct on the min RF pth, the test port is coupled t low level compred to the min pth. The coupling efficiency of the test port reltive to the min pth is reltively flt versus frequency nd cn be predicted using the following grphs, which outline typicl performnce. The grphs show the typicl performnce of the 4 types of coupling ports from 10kHz to 4GHz, types of test port re. 50ohm modules without diplexer (typiclly -20dB TX nd RX) 75ohm modules without diplexer (typiclly -14dB RX nd -26dB TX) 50ohm modules with diplexer (typiclly -19dB RX nd -21dB TX) 75ohm modules with diplexer (typiclly -13dB RX nd -27dB TX) The opertion of the test port is ccurte cross the specified operting rnge of the module, see the technicl specifiction section 6. All test ports hve minimum operting frequency of 10kHz, mesurements tken below 10kHz will hve reduced ccurcy. To ensure ccurte opertion, the signl ports need to be terminted with well mtched lod, poor mtching will degrde the ccurcy of the coupling fctor. Gin (db) Gin (db) ohm Modules without diplexers 75 ohm Modules without diplexers db typicl db typicl db typicl Tx & Rx monitor Rx monitor Tx monitor kHz 0.5GHz 1GHz 1.5GHz 2GHz 10kHz 0.5GHz 1GHz 1.5GHz 2GHz Frequency Frequency 50 ohm wide bnd test port 75 ohm wide bnd test port All module types except those fitted with RF diplexers, coupling fctor of front port reltive to rer port (db) versus Frequency (GHz) 18

19 Gin (db) -10 Gin (db) ohm Modules with diplexers 75 ohm Modules with diplexers -13 db typicl db typicl db typicl db typicl Rx monitor -35 Rx monitor Tx monitor Tx monitor kHz 0.5GHz 1GHz 1.5GHz 2GHz 10kHz 0.5GHz 1GHz 1.5GHz 2GHz Frequency Frequency 50 ohm wide bnd test port 75 ohm wide bnd test port Module types J nd K fitted with RF diplexers, coupling fctor of front port reltive to rer port (db) versus Frequency (GHz) Rer pnel connector type SMA 50 ohm OR BNC 50 ohm Rer pnel connector type BNC 75 ohm OR F-Type 75ohm Module Type Test Port Test Port None BNC50 ohm SMA50 None BNC75 B 70/140MHz IF module, MHz S N N S N D - DVB-T brodcst, MHz S N N S N G - GPS, specil function, MHz S N N - - L L-Bnd HTS, MHz N S N N S J L-Bnd HTS + Reference, DL MHz N S N N S K L-Bnd HTS + Reference, UL MHz N S N N S M - Generl purpose MHz N S N N S N - Generl purpose MHz N S N N S S - Widebnd MHz S N N - - T - Low frequency timing, MHz S N N S N U - Ultr Widebnd MHz S X X - - W - Extr Widebnd MHz S X X - - S = Stndrd O = Avilble option N = Non-stndrd, For non-stndrd options contct ViLite Communictions. X = Not vilble - = Not used on this module type Note: Only use the rer RF connections for your input nd output signls RF nd opticl rer input nd output ports Single function RF nd opticl rer input nd output ports All ViLiteHD modules re fitted with one or two rer RF ports nd one or two rer opticl ports. These re for the input of RF signls to trnsmitters nd output of RF signls from receivers; output opticl signls from trnsmitters nd input opticl signls to receivers. The port lettering convention for rer ports mtches tht for front ports. The upper of ech port is port A nd the lower is port B. On single receiver nd single trnsmitter modules the opticl nd RF port use the outer most positions to mximise ccessibility. Note: All new blindmte modules re supplied with n pproprite chssis interfce plte. If you wish to pre-populte nd cble your blindmte chssis in dvnce, chssis pltes cn be purchsed s spres, see section Function Single Trnsmitter Single Receiver Trnsceiver Dul Trnsmitter Dul Receiver Port A Trnsmitter Receiver Receiver Trnsmitter 1 Receiver 1 Port B Not Used Not Used Trnsmitter Trnsmitter 2 Receiver 2 All module types except frequency types J nd K 19

20 Function L-Bnd HTS + reference J Trnsmitter L-Bnd HTS+ reference J Receiver L-Bnd HTS + reference K Trnsmitter L-Bnd HTS + reference K Receiver Port A Receiver Reference Trnsmitter Reference Trnsmitter Reference Receiver Reference Port B Trnsmitter L-Bnd HTS Receiver L-Bnd HTS Trnsmitter L-Bnd HTS Receiver L-Bnd HTS Frequency types J nd K, L-Bnd HTS + Reference modules, with two RF ports RF port A RF port B RF port A Fibre port A Fibre port A Fibre port B Fibre port B RF port B Blindmte rer interfce Blindmte rer interfce Stndrd rer interfce Stndrd rer interfce Dul Chnnel Single Chnnel Dul Chnnel Single Chnnel Lbelling convention for Dul chnnel WDM/CWDM units When ViLiteHD dul TX modules re fitted with two different CWDM wvelength chnnels, they obey the convention tht the lower vlue wvelength is used for the TOP A port nd higher wvelength is used for the BOTTOM B port. An exmple is shown below. Module Type HRU-L1-8D-33-C uses dul chnnel blindmte interfce s shown bove, left Port A 1550nm on TOP, SC/APC connector Port B 1570nm on BOTTOM, SC/APC connector Diplexed RF rer input nd output ports The L-Bnd HTS + Reference modules cn optionlly be fitted with internl diplexers these combine the L-Bnd HTS nd Reference chnnels into single RF port, the port is normlly lbelled A+B for esy identifiction. Function Port A+B L-Bnd HTS + reference J Trnsmitter Diplexed Receiver Reference plus Trnsmitter L-Bnd HTS L-Bnd HTS+ reference J Receiver Diplexed Receiver L-Bnd HTS plus Trnsmitter Reference Frequency types J nd K, L-Bnd HTS + Reference modules, with one RF port L-Bnd HTS + reference K Trnsmitter Diplexed Trnsmitter Reference plus Trnsmitter L-Bnd HTS L-Bnd HTS + reference K Receiver Diplexed Receiver Reference plus Receiver L-Bnd HTS 20

21 WDM combined opticl rer input nd output ports Modules cn be fitted with n opticl WDM tht combines the two opticl chnnels into single port, this port would normlly be lbel A+B for esy identifiction Function Trnsceiver Dul Trnsmitter Dul Receiver Port A + B WDM combined Receiver plus Trnsmitter All module types except frequency types J nd K WDM combined Trnsmitter 1 plus Trnsmitter 2 WDM combined Receiver 1 plus Receiver 2 Function Port A+B L-Bnd HTS + reference J Trnsmitter WDM combined Receiver Reference plus Trnsmitter L-Bnd HTS L-Bnd HTS+ reference J Receiver WDM combined Receiver L-Bnd HTS plus Trnsmitter Reference Frequency types J nd K, L-Bnd HTS + Reference modules, with one opticl port L-Bnd HTS + reference K Trnsmitter WDM combined Trnsmitter Reference plus Trnsmitter L-Bnd HTS L-Bnd HTS + reference K Receiver WDM combined Receiver Reference plus Receiver L-Bnd HTS The dditionl opticl loss introduced by the WDM module nd the isoltion between the two opticl chnnels, requires tht the lrm threshold is reduced to eliminte the chnce of the RLL lrm mlfunctioning. The typicl lrm levels re given in section The WDM will reduce the isoltion between the two opticl pths, the opticl isoltion will be greter thn 20dB, giving typicl RF isoltion of 45dB. Diplexed RF port A+B WDM Fibre port A+B Diplexed RF port A+B RF port B RF port A Fibre port A Fibre port B WDM Fibre port A+B Diplexed RF port A+B WDM Fibre port A+B Blindmte rer interfce Stndrd rer interfce Stndrd rer interfce Stndrd rer interfce RF Diplexer nd WDM opticl RF Diplexer with two opticl Two RF nd WDM opticl RF Diplexer nd WDM opticl Seprte blindmte pnels If you wish to pre-populte nd cble your blindmte chssis in dvnce, chssis pltes cn be purchsed s spres, detils below. PPM prt number ViLiteHD, Chssis plte, Blindmte, 1 * SMA 50ohms, 1 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 2 * SMA 50ohms, 2 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 1 * BNC 75ohms, 1 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 2 * BNC 75ohms, 2 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 1 * F-Type 75ohms, 1 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 2 * F-Type 75ohms, 2 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 2 * SMA 50ohms PPM prt number ViLiteHD, Chssis plte, Blindmte, 3 * SMA 50ohms 21

22 PPM prt number ViLiteHD, Chssis plte, Blindmte, 4 * SMA 50ohms PPM prt number ViLiteHD, Chssis plte, Blindmte Duplexed, 1 * SMA 50ohms, 1 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte Duplexed, 1 * BNC 75ohms, 1 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 1 * BNC 50ohms, 1 * SC/APC PPM prt number ViLiteHD, Chssis plte, Blindmte, 2 * BNC 50ohms, 2 * SC/APC. PPM prt number ViLiteHD, Chssis plte, Blindmte, 2 * SC/APC Digitl signl ports Any ViLiteHD RF module which is fitted with digitl trnsmission pth, hs these digitl signl interfces connected vi the chssis bckplne (plug-in or blindmte modules) or the min interfce connector (Blue link nd Yellow link modules). Detils of the pin outs re given in the chssis mnul for plug-in modules nd in section of this mnul for Blue link nd Yellow link modules. 2.4 Controlling RF modules ViLiteHD RF links re fctory set nd redy to operte. However, they cn be softwre controlled (where n SNMP module is used in the sme chssis) or mnully controlled vi the DIP switches fitted on ech module Mnul control, MGC The plug-in modules cn be mnully configured to set vrious opertionl prmeters. The dul in line pckge (DIP) switches SW1, SW2, SW3 control configurtion nd re locted on the bottom side of the PCB. These switches cn be ccessed by withdrwing the module by pproximtely one-third of its length. Two or three sets of switches will be instlled depending on the type of module. Detils of the function of ech switch re given in the section below Mnul control, DIP switch functions Locted on the bottom side of the module bord, three DIP switches (SW1 to 3) provide mnul control of vrious functions. SW1 nd SW2 re dedicted to mnul gin control (MGC). Once TX_MGC_ON or RX_MGC_ON is switched on, internl RF ttenutors cn be set directly to desired level. SW3 is used to control vrious common control functions. All intelligent modules will be delivered with DIP switches ll set to OFF (cler). Only specil mnul gin control modules will be delivered with the DIP switches set to fctory clibrted gin settings. Single Trnsmitter Single Receiver Trnsceiver The switch rrngement for the Dul Trnsmitter nd Dul Receiver look similr to the Trnsceiver but with the top switch SW1 ssigned to (TX1 nd RX1 respectively) nd the middle switch SW2 ssigned to (TX2 nd RX2 respectively); detils re shown below. SW1 Top DIP switch bnk Single trnsmitter HRT Single receiver HRR Trnsceiver HRX Dul trnsmitter HRU Dul receiver HRV Not fitted RXMGC RXMGC TX1MGC RX1MGC Not fitted RX 0.5dB RX 0.5dB TX1 0.5dB RX1 0.5dB Not fitted RX 1dB RX 1dB TX1 1dB RX1 1dB Not fitted RX 2dB RX 2dB TX1 2dB RX1 2dB Not fitted RX 4dB RX 4dB TX1 4dB RX1 4dB Not fitted RX 8dB RX 8dB TX1 8dB RX1 8dB 22

23 SW2 Middle DIP switch bnk Single trnsmitter HRT Single receiver HRR Trnsceiver HRX Dul trnsmitter HRU Dul receiver HRV TXMGC Not fitted TXMGC TX2MGC RX2MGC TX 0.5dB Not fitted TX 0.5dB TX2 0.5dB RX2 0.5dB TX 1dB Not fitted TX 1dB TX2 1dB RX2 1dB TX 2dB Not fitted TX 2dB TX2 2dB RX2 2dB TX 4dB Not fitted TX 4dB TX2 4dB RX2 4dB TX 8dB Not fitted TX 8dB TX2 8dB RX2 8dB SW3 Bottom DIP switch bnk Single trnsmitter HRT Single receiver HRR Trnsceiver HRX Dul trnsmitter HRU Dul receiver HRV TX rst TX rst (not used) TX rst TX1 rst RX1 rst RX rst (not used) RX rst RX rst TX2 rst RX2 rst SNMP dis SNMP dis SNMP dis SNMP dis SNMP dis Tone Tone (not used) Tone Tone not used VSEL VSEL (not used) VSEL VSEL not used LNB LNB (not used) LNB LNB not used TXAGC TXAGC(not used) TXAGC TX1AGC RX1AGC RXAGC (not used) RXAGC RXAGC TX2AGC RX2AGC When viewed in the orienttion illustrted, switching the DIP to the LEFT is OFF (cler) nd to the RIGHT is ON (set) DIP switches - receiver MGC The RF gin within the receiver function is the sum of ll gin settings on SW1. The RF gin cn be chnged in nominl steps of 0.5dB. For dul receiver modules, chnnel 1 is controlled by switches prefixed with RX1 nd chnnel 2 is controlled by switches prefixed with RX2. The function of the switches is otherwise identicl. For specil mnul gin control modules record the fctory setting of ech gin step; this is the preset gin of the receiver. RXMGC ON = Module under mnul gin control, OFF = Module under softwre control or t defult setting RX 0.5dB ON = Gin incresed by 0.5dB nominl, OFF= no gin increse RX 1dB ON = Gin incresed by 1dB nominl, OFF= no gin increse RX 2dB ON = Gin incresed by 2dB nominl, OFF= no gin increse RX 4dB ON = Gin incresed by 4dB nominl, OFF= no gin increse RX 8dB ON = Gin incresed by 8dB nominl, OFF= no gin increse When MGC is not in use, mnul ttenution hs to be set to zero, i.e. ll poles with the sme switch should return to OFF position. Filure to do so my prevent the module from controlling the gin correctly DIP switches - trnsmitter MGC The RF gin within the trnsmitter function is the sum of ll ttenutor settings on SW2. The RF gin cn be chnged in nominl steps of 0.5dB. For dul trnsmitter modules, chnnel 1 is controlled by switches prefixed with TX1 nd chnnel 2 is controlled by switches prefixed with TX2. The function of the switches is otherwise identicl. For specil mnul gin control modules record the fctory setting of ech gin step; this is the preset gin of the trnsmitter. TXMGC ON = Module under mnul gin control, OFF = Module under softwre control or t defult setting TX 0.5dB ON = Gin incresed by 0.5dB nominl, OFF= no gin increse TX 1dB ON = Gin incresed by 1dB nominl, OFF= no gin increse TX 2dB ON = Gin incresed by 2dB nominl, OFF= no gin increse TX 4dB ON = Gin incresed by 4dB nominl, OFF= no gin increse TX 8dB ON = Gin incresed by 8dB nominl, OFF= no gin increse When MGC is not in use, mnul ttenution hs to be set to zero, i.e. ll poles with the sme switch should return to OFF position. Filure to do so my prevent the module from controlling the gin correctly Mnul gin control exmple In this exmple we consider receiver. The fctory set vlues will typiclly be in the mid-rnge of the llowble gin setting rnge, to llow the opertor to both increse nd decrese the gin of the unit if desired. The fctory set vlues re TX 0.5dB = ON; TX 1dB = OFF; TX 2dB = ON; TX 4dB = ON; TX 8dB = OFF. This is totl gin of = 6.5dB [this will be the fctory preset gin] The opertor wishes to increse the gin by 3dB from fctory preset gin, he must increse the DIP switch set gin from 6.5dB to 9.5dB The new gin setting desired will be 9.5dB, mde from the following steps , therefore set the switches s shown below TX 0.5dB = ON; TX 1dB = ON; TX 2dB = OFF; TX 4dB = OFF; TX 8dB = ON. The new gin is now set to 9.5dB Note: The gin of the link is the sum of the trnsmitter module nd receiver module gins. 23

24 DIP switches - control If you wish to use mnul control we dvise tht you record the initil setting of ech switch, this is the preset configurtion of the module. SW3 control functions re common to the whole module. The on-bord micro controllers cn be mnully reset by using TX_RESET nd/or RX_RESET, they must return to the OFF (cler) position to initite the ctul reset sequence. Switching on SNMP_dis will disble the module I2C bus for tht module. In this cse, SNMP controller or other I2C hosts will be unble to tlk to the module. RF uto gin control (AGC) function cn be ctivted by setting TX_AGC_ON nd RX_AGC_ON to ON (set) position. However, AGC mode will be overridden by MGC mode if both modes re selected. These will override module internl soft gin control. Some modules will hve control functions indicted tht re not used, such s RX_rst in single trnsmitter module. Switches for these not used positions should lwys be left in the OFF (cler) position. TX rst Reset TX microcontroller by moving switch from OFF > ON > OFF, ensure tht it is returned to the OFF position** RX rst Reset RX microcontroller by moving switch from OFF > ON > OFF, ensure tht it is returned to the OFF position** SNMP_dis ON = I2C bus disbled (module cnnot be remotely ccessed), OFF = I2C bus enbled Tone ON = 22kHz tone present, OFF = 22kHz tone disbled VSEL ON = Internl module LNB PSU voltge set to 18V, OFF = Internl module LNB PSU voltge set to 13V LNB ON = Internl module LNB PSU enbled, OFF = Internl module LNB PSU disbled TXAGC* ON = TX AGC control function ctivte, OFF = TX AGC control function disbled RXAGC* ON = RX AGC control function ctivte, OFF = RX AGC control function disbled * Not vilble on mnul control modules ** Must be power to perform reset ction, removing power will lso reset module Chnging module RF gin The performnce specifictions in section 6 re only vlid when modules re operted in the fctory preset configurtion. However, the gin of the modules cn be chnged to suit customer requirements. The performnce of the trnsmitter is highly dependent on the lser diode. Chnging trnsmitter nd receiver gin will ffect the sensitivity nd linerity of the module. Detil of these effects re provided in section Softwre control - vi SNMP controller ViLiteHD RF links cn be controlled vi ViLiteHD SNMP control module when fitted in the sme chssis, see the SNMP controller module hndbook for further detils. The SNMP module offers control vi both web interfce nd SNMP. Remember if you wish to use softwre control the mnul ttenution hs to be set to zero, i.e. ll poles of the switch should return to the OFF position. Filure to do so my prevent the module from controlling the gin correctly. 2.5 LNA/LNB feed All informtion in this section refers to fibre optic trnsmitter, dul trnsmitter nd trnsceiver modules. LNA voltges re fed out through the TX RF input connector on the modules nd cn be used to power connected equipment. Precutions must be tken to ensure tht ny connected equipment is tolernt of the DC voltges supplied LNA/LNB feed - trnsmitter modules Trnsmitter modules my provide lower noise mplifier (LNA) or low noise block down converter (LNB) power feeds. These provide DC pth to the trnsmitter RF input to provide power to LNA/LNB or other connected module. The externl DC pths (option 3) of module my be ccessed vi the chssis connector for plug-in nd blindmte modules (see your chssis hndbook), the edge connector for Yellow link modules (see section 4.3.2) or the Molex connector of Blue link modules (see section 4.3.3). The LNA/LNB option cn be determined from the prt number. Modules in this rnge offer vriety of feed options, shown below. 0 - No LNA feed 1 - Internlly generted preset +5 ± 0.5V t 80mA mximum per chnnel 2 - Internlly generted preset +12 ± 1V t 300mA mximum per chnnel (Limited to 80mA for low frequency T modules per output) 3 - Externl Feed from chssis connector 0 to +28V t 350mA per chnnel (Limited to 80mA for low frequency T modules per output)* 4-20kb/s RS484/422/232 signl chnnel, No LNA feed 5 - Internlly generted ± 1 or ± 1 or +22 ± 1V selectble LNB voltge, with switchble 22kHz signlling tone. 700mA per chnnel for single trnsmit chnnel (i.e. single trnsmitter or trnsceiver module). 350mA per chnnel for dul trnsmit chnnel, 700mA totl (i.e. dul trnsmitter module). 6 - GPS lod simultor with internlly generted preset +5 ± 0.5V t 80mA mximum per chnnel 7 - Dul module with RF diplexer, externl feed 0 to +28V t 350mA from L-Bnd HTS TX to diplexed input (L-Bnd HTS + reference ONLY) 8 - Dul module with RF diplexer nd internlly generted ± 1 or ± 1 or +22 ± 1V selectble LNB voltge, with switchble 22kHz signlling tone, t 350mA to diplexed input (L-Bnd HTS + reference ONLY) 9-20kb/s RS485/422/232 chnnel, Externl Feed from chssis connector 0 to +28V t 350mA per chnnel A - IRIG Low frequency extension (to ~100Hz), No LNA feed B Not used s n LNA/LNB feed option C - 20kb/s TTL chnnel, No LNA feed 24

25 Module Type Feed options A B C B 70/140MHz IF module, MHz O O O S* N X X X X N X X N D - DVB-T brodcst, MHz O N S N N X X X X N X X N G - GPS, specil function, MHz O S O N N X O X X N X X N L L-Bnd HTS, MHz O N N S N O X X X N X X N J L-Bnd HTS + Reference, DL MHz O N N O N O X O S N X X N K L-Bnd HTS + Reference, UL MHz O N N O N N X S N N X X N M - Generl purpose MHz O N N S* N X X X X N X X N N - Generl purpose MHz O N O S* N N X X X N X X N S - Widebnd MHz S N N N* N X X X X N X X N T - Low frequency timing, MHz S O O O* X X X X X X O X X U - Ultr Widebnd MHz S X X X X X X X X X X X X W - Extr Widebnd MHz O N N N* S X X X X O X X O * TX modules fitted with option 3 Externl Feed; which re cpble of opertion to 10MHz nd below (frequency types B,M,N,S,T,W) should not be used to trnsmit 22kHz tone vi the externl feed, see section S O N X = Stndrd = Avilble option = Non-stndrd, For non-stndrd options contct ViLite Communictions. = Not vilble LNA/LNB feed efficiency - plug-in modules The power consumption of trnsmitter is specified without llownce for LNA/LNB power. When clculting power consumption the module efficiency of the LNA/LNB power supply t full lod is 89% typiclly nd 80% minimum LNA/LNB voltge boost - plug-in modules The output voltge of ny module equipped with n internl 13/18/22 volt power supply (option 5 nd 8 ) cn hve its output voltge incresed to llow for cble losses, the output voltge is incresed by +1V nominlly. This is implemented using the modules softwre configurtion. This option is NOT vilble on units equipped with +5V, +12V or externl voltge feeds Externl voltge feeds on low frequency cpble TX modules TX modules fitted with n option 3 externl feed, which re cpble of opertion to 10MHz nd below (frequency types B,M,N,S,T,W), SHOULD NOT trnsmit 22kHz tone. These modules re fitted with lrge prllel cpcitor between the externl voltge feed input nd ground, this protects the units from LNA/LNB voltge switch on trnsients which would otherwise dmge the unit. This cpcitor significntly ttenutes the 22kHz tone signl, reducing it below typicl opertionl thresholds t the RF input. This does not ffect other option 3 externl feed modules which my be used with 22kHz tone vi the externl feed (frequency types D,G,L,K), contct ViLite Communictions for more detils LNA/LNB Feeds - dul trnsmitter modules LNA/LNB power supply feeds re vilble for dul trnsmitter modules. Modules fitted with internlly generted power source options 2 (+12V) or 5 nd 8 (13/18/22kHz) shre single power source tht feeds both bis tees. Hence there will be no low frequency electricl isoltion between them. Modules fitted with internlly generted power source option 1 nd 6 (+5V) re powered from seprtely regulted supplies nd hve high level of low frequency isoltion. Modules with no LNA feed, options 0, 4, A nd C hve no DC connections nd hence both inputs re isolted inside the module. Modules fitted with externlly generted power sources re ech fed from seprte pins, hence both inputs re isolted inside the module LNA feed - Blue link nd Yellow link modules Modules in this rnge offer n internlly +5V /+12V feeds nd externl feed only. Some modules do offer n bility to route user fed LNA voltge through from their DC input connector. When using some ViLite Outdoor Enclosures, externl LNA feeds re vilble vi the outdoor enclosure motherbord LNA feed Low frequency T module Low frequency T modules hve the cpbility of LNA feed, but due to the lrge vlue of the inductors used, the mximum current vilble for ny type of LNA feed is 80mA. 25

26 Voltge t RF connector (V) HRX-HB-7 VIALITEHD RF LINK HANDBOOK Cre must be tken not to drw excess current s the bis the bis inductor is not protected by fuse nd gross over rting will cuse permnent dmge LNA feed Voltge versus current chrcteristic The LNA voltge is fed vi n inductor (providing RF isoltion) low vlue resistor (used for current monitoring) nd resettble fuse (providing protection). These elements dd series impednce of pproximtely one ohm. The grph below shows how the voltge current chrcteristic of typicl module with 12 volts fed to into the LNA feed vi n externl feed from the module connector LNA feed pin. When using LNA/LNB feeds cre must be tken to llow for voltge drops through the input feed network s well s voltge drops in the output feed network. For exmple RG58 my hve resistnce of up to 0.2 ohms per meter; this vries gretly between different types nd constructions of cble LNA feed Voltge versus current Lod Current (A) Voltge mesured t RF connector versus lod current, input voltge 12V NOTE: the grph shows the module operting beyond its specifiction limit to illustrte the mrgin of sfe opertion, it should not be operted beyond its specifiction limit. 2.6 BUC feed All informtion in this section refers to fibre optic receiver, dul receiver nd trnsceiver modules. BUC voltges re fed out through the RX RF output connector on the modules nd cn be used to power connected equipment. Precutions must be tken to ensure tht ny connected equipment is tolernt of the DC voltges supplied BUC feed - receiver modules Receiver modules my optionlly provide block up converter (BUC) power feeds. These provide DC pth to the receiver RF output to provide power to BUC or other connected module. The externl DC pths (option 3) of module my be ccessed vi the chssis connector for Plug-in nd blindmte modules (see your chssis hndbook), the edge connector for Yellow link modules (see section 4.3.2) or the Molex connector of Blue link modules (see section 4.3.3). The BUC option cn be determined from the prt number. 0 - No LNA feed 1 - Internlly generted preset +5 ± 0.5V t 80mA mximum per chnnel 2 - Internlly generted preset +12 ± 1V t 300mA mximum per chnnel (Limited to 80mA for low frequency T modules per output) 3 - Externl Feed -36 to +36V t 700mA per chnnel for single receiver chnnel (80mA for low frequency T modules) Externl Feed -36 to +36V t 350mA per chnnel for dul receiver chnnel (80mA for low frequency T modules) 4-20kb/s RS484/422/232 signl chnnel, No LNA feed 5 - Internlly generted ± 1 or ± 1 or +22 ± 1V selectble BUC voltge, with switchble 22kHz signlling tone. 700mA per chnnel for single receiver chnnel (i.e. single trnsmitter or trnsceiver module). 350mA per chnnel for dul receiver chnnel, 700mA totl (i.e. dul trnsmitter module). 6 - GPS lod simultor 7 - Dul module with RF diplexer, Externl Feed -36 to +36V t 350mA from L-Bnd HTS RX to diplexed input (L-Bnd HTS + reference ONLY) 8 - Dul module with RF diplexer nd internlly generted ± 1 or ± 1 or +22 ± 1V selectble BUC voltge, with switchble 22kHz signlling tone, t 350mA to L-Bnd HTS Receiver chnnel (L-Bnd HTS + reference ONLY) 9-20kb/s RS485/422/232 chnnel, Externl Feed from chssis connector -36 to +36V t 350mA per chnnel A - IRIG Low frequency extension (to ~100Hz), No LNA feed B - Voltge trnsient protection on output, smll vlue series cpcitor, No LNA feed C - 20kb/s TTL chnnel, No LNA feed 26

27 Module Type Feed options A B C B 70/140MHz IF module, MHz S N N N N X X X X N X X N D - DVB-T brodcst, MHz S N N N N X X X X N X X N G - GPS, specil function, MHz S N N N N X O X X N X N N L L-Bnd HTS, MHz S N N O N O X X X N X N N J L-Bnd HTS + Reference, DL MHz O N N O N O X S N N X N N K L-Bnd HTS + Reference, UL MHz O N N O N N X S N N X N N M - Generl purpose MHz S N N O N X X X X N X X N N - Generl purpose MHz S N N O N N X X X N X X N S - Widebnd MHz S N N N N X X X X N X X N T - Low frequency timing, MHz S N N N X X X X X X O X X U - Ultr Widebnd MHz S X X X X X X X X X X X X W - Extr Widebnd MHz O N N N S X X X X O X X O S O N X = Stndrd = Avilble option = Non-stndrd, For non-stndrd options contct ViLite Communictions. = Not vilble BUC feed - dul receiver modules BUC power supply feeds re vilble for dul receiver modules. Modules fitted with internlly generted power source options 2 (+12V) or 5 nd 8 (13/18/22kHz) shre single power source tht feeds both bis tees. Hence there will be no low frequency electricl isoltion between them. Modules fitted with internlly generted power source option 1 nd 6 (+5V) re power from seprtely regulted supplies nd hve high level of low frequency isoltion. Modules with no BUC feed, options 0, 4, A, B nd C hve no DC connections nd hence both inputs re isolted inside the module. Modules fitted with externlly generted power sources re ech fed from seprte pins; hence both outputs re isolted inside the module BUC voltge boost - plug-in modules The output voltge of ny module equipped with n internl 13/18/22 volt power supply (option 5 nd 8 ) cn hve its output voltge incresed to llow for cble losses, the output voltge is incresed by +1V nominlly. This is implemented using the modules softwre configurtion. This option is NOT vilble on units equipped with +5V, +12V or externl voltge feeds. 2.7 Mnul configurtion of LNA/LNB nd BUC feeds, plug-in modules Some modules cn be configured either by jumper or by switch to provide n LNA/LNB or BUC feed either from n internlly generted voltge or from the rer connector in the ViLiteHD chssis. The digrm below shows how these re set. Units with LNA/ LNB internl power supplies (options 1, 2, nd 5) will be delivered set to internl. Units with externl LNA power (option 3) will be set to externl. Units with no LNA/LNB or BUC feed (option 0) will normlly hve no heders fitted to positions J15 or J16. TX up = J15 (LNB) up = externl down = internl open = not connected J16 not fitted RX up = J16 (BUC) up = externl down = internl open = not connected J15 not fitted TRX up = J16 (BUC) up = externl down = internl open = not connected J15 (LNB) up = externl down = internl open = not connected Mnul configurtion of LNA/LNB/BUC DC power feeds on TX, RX nd TRX 27

28 DTX up = J16 (LNB1) up = externl down = internl open = not connected J15 (LNB2) up = externl down = internl open = not connected DRX up = J16 (BUC1) up = externl down = internl open = not connected J15 (BUC2) up = externl down = internl open = not connected High power TX up = externl J4 (LNB) up = externl down = internl open = not connected 2.8 Digitl chnnel opertion Mnul configurtion of LNA/LNB/BUC DC power feeds on DTX, DRX nd high power TX The digitl chnnel is independent of RF trnsmission nd is cpble of trnsmitting up to 20kbps digitl dt simultneously. There re two built-in digitl interfces, one for RS422/485 signls nd the other for RS232 or TTL signls. These re vilble on plug-in or blindmte modules on the chssis rer connector (see chssis hndbook nd sections nd ) or directly on the module interfce connector (Blue link nd Yellow link modules, see sections nd 4.3.3). The link is unidirectionl nd therefore digitl dt trnsmits in the sme direction s the RF link only. Logic low on RTS_485 will shut down the RS422/485 line driver in RS485 ppliction (see relevnt RS485 stndrd for detil). Logic high or open circuit on RTS_485 will enble the line driver in the Rx module. The digitl informtion is conveyed on Frequency Shift Keyed (FSK) crrier well below the operting bnd of the link (t pprox. 500kHz). The unit is fitted with internl filtering to hevily ttenute this signl t the RF output. It my however still be observed s sidebnd (second order) when mesuring higher frequency signls. The crrier sidebnd will typiclly be fixed level below the min crrier t ll power levels. The FSK 500kHz crrier will typiclly be suppressed by 70dBc, reltive to RF crrier. The 500kHz FSK tone cn be removed by using softwre control, selecting the module nd setting FSK to disble. This cn lso be implemented using SNMP. To ensure opertion of the digitl chnnel the opticl loss between the trnsmitter nd receiver must be 0 10dB, opertion outside of this rnge will result in high BER nd potentilly totl loss of function. The digitl chnnel option cn be selected by digit eight of the prt number (lso used for LNA/LNB/BUC feed selection) detils of the options vilble re given in sections 2.5, 2.6.1, 5 nd 6. Note: Modules equipped with digitl chnnel re fctory delivered with FSK tone enbled. 2.9 GPS mode opertion GPS bnd units re equipped with hrdwre tht cn provide specil GPS functions. They will mimic the opertion of n ctive GPS mplifier through the fibre optic link GPS trnsmitter mode opertion Under norml non-fult conditions ViLiteHD GPS link will operte in n identicl fshion to ll other ViLiteHD modules. However the trnsmitter is equipped with dditionl hrdwre tht detects the DC current flowing from GPS trnsmitter RF input to the ctive GPS ntenn. If the current sunk by the ctive ntenn flls below n lrm threshold of 5mA. (i.e. in the cse of the LNA filing) the unit will generte n internl lrm. With GPS mode enbled, the trnsmitter lser will turn off. This will generte n lrm in the connected receiver module, s the connected unit will hve received light level lrm (RLL). The GPS mode cn only be enbled nd disbled when the unit is under softwre control. Note: GPS Modules re fctory delivered with GPS mode enbled. If GPS mode is disbled the lser will be enbled in both lrm nd non-lrm modes; irrespective of the ntenn feed current if there is no other fult. Some mjor trnsmitter fults my lso turn off the lser GPS receiver mode opertion, units equipped with GPS lod simultor Under norml non-fult conditions ViLiteHD GPS link opertes very similrly to norml ViLiteHD FOL. With GPS mode enbled, in non-fult conditions it presents DC lod t its RF output. This will typiclly sink 15mA (for input voltges in the rnge of 5 to 24V). 28

29 When the unit is in fult condition; either by wy of n internl fult, or due to low received light levels from the connected trnsmitter. It will disble the current sink. For most GPS receivers nd time servers this will provide bsic lrm function. If GPS mode is disbled the DC lod will be open circuit in both lrm nd non-lrm modes. Note: GPS Modules re fctory delivered with GPS mode enbled Operting in gin control modes Modules cn be operted in four different gin control mode when operted with n SNMP nd Web controller module. The SNMP nd Web controller module is required for set up, under norml opertion the module is under the control of its on bord controller. Mnul control is lso vilble; this cn be set using the hrdwre DIP switches. For more informtion on this feture, plese see section 2.13 of the ViLiteHD SNMP controller hndbook, HRC-1-HB High power nd DWDM trnsmitter modules The ViLiteHD rnge includes high opticl power thermo-electric cooled (TEC) trnsmitter modules which use the stndrd ViLiteHD hrdwre nd softwre. The modules re indicted by the use of the lser types (D,E nd K), see section 5. These provide rnge of dditionl fetures. DWDM wvelength selection using 50GHz ITU grid High opticl power output option offering rnges up to 100km without the need for opticl mplifiction Superior temperture performnce Extended temperture rnge, up to 70 C High opticl gins Superior linerity nd low noise Ultr-wide dynmic rnge LNB power options Pckging options including plug-in/ blindmte nd Yellow link modules EN :2007 s CLASS 1 rdition emitting devices, sfe under ll conditions of norml use. High power Yellow link module High power Plug-in module The TEC controller built into the high power lser thermlly stbilises the lser, this elimintes significnt mount of the therml gin vrition in the high power trnsmitter. The grph below shows the gin vrition for both stndrd nd DWDM trnsmitter. 29

30 Gin Vrition (db) Gin Vrition (db) HRX-HB-7 VIALITEHD RF LINK HANDBOOK Stndrd DWDM Temp (degc) Chnge of Stndrd trnsmitter/ DWDM or high power trnsmitter gin t temperture, t 1.2GHz Stndrd Rx DWDM TX DWDM Link Temp (degc) Chnge of Stndrd receiver/ DWDM trnsmitter / Link gin t temperture, t 1.2GHz The ViLiteHD DWDM trnsmitter module cn be used with stndrd ViLiteHD receiver module, BUT your opticl link budget must ensure tht the stndrd ViLiteHD receiver is not opticlly overdriven. The stndrd ViLiteHD receiver module should hve n verge opticl input of no more thn 4mW (6dBm). For pplictions with lower opticl loss the ViLiteHD high power receiver should be used. The minimum opticl loss is shown in the tble below. Stndrd Receiver High power K receiver D Trnsmitter No less thn opticl loss 1dB No minimum link budget E Trnsmitter No less thn opticl loss 5dB No minimum link budget K Trnsmitter No less thn opticl loss 5dB No minimum link budget Due to its dditionl complexity the ViLiteHD High power nd DWDM trnsmitter hs reduced number of options. It is only vilble s single trnsmitter. The digitl chnnel option (s described in section 2.8) is not vilble. The input power supply rnge is more restricted thn stndrd modules, see section This will not effect the opertion of your modules in ny ViLiteHD chssis but this will ffect the voltge supply requirements for Blue link nd Yellow link modules. The high power trnsmitter will operte t high opticl losses, the grph below shows how the noise figure of the opticl trnsmitter increses with incresed opticl loss nd dispersion cuse by long cble lengths. 30

31 Increse of noise figure (db) Increse of noise figure (db) HRX-HB-7 VIALITEHD RF LINK HANDBOOK Fibre length 25km 50km 75km 100km t 1550nm Opticl Loss (db) Increse in Noise Figure (db) due to opticl loss nd dispersion in long fibre cble Opticl Loss (db) Increse in Noise Figure (db) due to opticl loss Note: Design of long rnge fibre optic link my require complex system to chieve optimum performnce. The system cn include rnge of opticl components such s. DMDM multiplexers DWDM demultiplexers The components will be required for combining nd uncombining multiple DWDM trnsmitters, n incorrect choice of components will reduce the effectiveness of your system, prticulrly the isoltion between different DWDM chnnels. Opticl mplifiers such s Erbium Doped Fibre Amplifier (EDFA) Dispersion Compensting Fibre modules (DCF) The use of these dditionl components will help mnge the effect of very long fibres nd optimised the performnce of you system ViLite Communictions engineering tem will be hppy to support your system design. 31

32 High power nd DWDM trnsmitter modules, therml lod All DWDM modules hve ctive therml control, which produces extr het lod in there deployed environments. For this reson extr considertion is needed when plnning the instlltion nd deployment of these systems. As the cooling is ctive thre is lso the possibility tht this might cuse prsitic het trnsfer if not properly controlled, which will reduce its operting efficiency nd effective operting temperture rnge. If the DWDM ctive cooling TEC is unble to stbilise the lser power will be turned off, opertion will only resume if the unit is power cycled. To mintin full opertionl temperture we suggest tht you tke the following ctions. Do not plce DWDM trnsmitter djcent to ech other When using 3U chssis if more thn 4 modules re fitted, forced ir cooling should be used (flow rte ~100CFM or more) If housing DWDM trnsmitters in n outdoor housing contct ViLite Communictions for more detils 2.12 L-Bnd HTS + reference modules The ViLiteHD L-Bnd HTS + reference link is designed for pplictions which require the trnsport of both n L-Bnd HTS ( MHz) nd reference signl (5-20MHz). This is often required where remote equipment shres common frequency reference, typiclly 10MHz. The modules trnsmit L-Bnd HTS nd reference signls hve two different opticl pths, ech opticl pth is seprtely modulted to minimise intermodultion distortion between the L-Bnd HTS nd reference signls, to give optiml performnce. The modules re vilble with the following options. Seprte L-Bnd HTS nd reference RF ports OR RF diplexer tht combines the RF nd reference signls to single RF port. Seprte opticl ports for L-Bnd HTS nd reference OR opticl combining using WDM requiring only single opticl port. Switchble LNB power supply with 13V/18V nd 22kHz tone. There re two types of L-Bnd HTS nd reference module; the J modules re used on the receive pth (downlink) nd the K modules re used on the trnsmit pth (uplink). The J frequency type, L-Bnd HTS + reference, receive pth (downlink) module is designed for use in SATCOM downlink. Where the 10MHz signl source is in the equipment room nd L-Bnd HTS signl source is the remote LNB; in this cse the two signls re trvelling in the opposite directions. 32

33 L-Bnd HTS + reference downlink When J receive pth (downlink) modules with WDMs re used the opticl pths re configured s below. The L-Bnd HTS opticl pth uses 1550nm lser. The reference opticl pth uses 1310nm lser. Receiver pths WDM chnnels re configured to mtch. See sections for dditionl notes on units fitted with diplexed RF ports. See sections for dditionl notes on units fitted with WDM combined ports. Note: The fibre port of J modules without WDMs must be connected A>B nd B>A s shown following. Note: An opticl wvelength must be specified for the J module RX s it hs lser trnsmitting the reference signl. Note: The modules specified gin refers to the L-Bnd HTS pth, the reference pth gin is lwys 0dB with -25dB TX nd +25dB RX. Remote Different types of receive pth (downlink) J module Equipment room 33

34 L-Bnd HTS + reference uplink The K frequency type, L-Bnd HTS + reference, trnsmit pth (uplink) module is designed for use in SATCOM uplink. Where the 10MHz signl source is in the equipment room nd L-Bnd HTS signl sourced is the equipment room modem; in this cse the two signls re trvelling in the sme direction. When K trnsmit pth (uplink) modules with WDMs re used the opticl pths re configured s below. The L-Bnd HTS opticl pth uses 1550nm lser. The reference opticl pth uses 1310nm lser. Receiver pths WDM chnnels re configured to mtch. Note: The fibre port of K modules without WDMs must be connected A>A nd B>B s shown following. Note: The modules specified gin refers to the L-Bnd HTS pth, the reference pth gin is lwys 0dB with -25dB TX nd +25dB RX. See sections for dditionl notes on units fitted with diplexed RF ports. See sections for dditionl notes on units fitted with WDM combined ports. Equipment room Different types of trnsmit pth (uplink) K module Remote 34

35 2.13 Susceptibility to DC pulses from ViLiteHD receivers All receiver modules will crete 1-2Vpek DC trnsient from the RF output t strt up into 50Ω lod (pproximtely 5V into 1MΩ lod). This my cuse filure in some very sensitive spectrum nlysers or similr equipment. Plese check before connecting your equipment. Contct ViLite Communictions for more detils Protection of ViLiteHD equipment from DC pulses All modules hve AC coupled inputs nd/or outputs nd will be sensitive to lrge trnsients (>5V) pplied t the RF connector. This my result in permnent dmge to the modules, prticulrly to low frequency or widebnd modules. DVB-T nd L-Bnd HTS modules re designed to survive non repetitive DC pulse of up to 36V. To increse protection, BUC feed option B cn be specified for GPS receiver modules to increses their robustness to DC pulses see section Contct ViLite Communictions for more detils Low frequency extension for IRIG nd timing ppliction ViLiteHD timing modules T cn be equipped with low frequency extension llowing opertion down to frequencies s low s 100Hz, this cn be used to trnsport IRIG timing signl. IRIG formt re described by four digit code, the code is detiled below. i.e. IRIG B122 is: 100 Bps, Sine wve (mplitude modulted), 1 khz crrier, nd Coded expressions BCD. Digit 1 Bit rte ViLiteHD RF links with low frequency extensions cn crry ll bit rte types s long s these re less thn the crrier frequency. They will not crry bit rtes equl to the crrier frequency. Code Bit rte Bit time Bits per frme Frme time Frme rte A 1000 PPS 1 ms ms 10 Hz B 100 PPS 10 ms ms 1 Hz C 2 PPS 0.5 s minute 1/60 Hz D 1/60 PPS 1 minute 60 1 hour 1/3600 Hz E 10 PPS 100 ms s 0.1 Hz G PPS 0.1 ms ms 100 Hz H 1 PPS 1 s 60 1 minute 1/60 Hz Digit 2 Modultion Type ViLiteHD RF links with low frequency extensions cn crry modultion types 1 nd 2. ViLiteHD seril digitl links cn be used to crry modultion type 0 with frequency crrier type 0, such s HRB R-28-L1310. Code Modultion 0 (DCLS) Direct Current Level Shift (width coded) 1 Sine wve crrier (mplitude modulted) 2 Mnchester modulted Digit 3 - Crrier frequency ViLiteHD RF links with low frequency extensions cn operte with crrier frequency of 1kHz nd bove, supporting types 2,3,4 nd 5. ViLiteHD seril digitl links cn be used to crry modultion type 0 with frequency crrier type 0, such s HRB R-28-L1310. Code Crrier frequency 0 No crrier (DCLS) Hz (10 ms index count intervl) 2 1 khz (1 ms index count intervl) 3 10 khz (100 µs index count intervl) khz (10 µs index count intervl) 5 1 MHz (1 µs index count intervl) Digit 4 - Coded expressions ViLiteHD RF links with low frequency extensions cn crry ll coded expressions types. Code Coded expressions 0. BCD (TOY), CF, SBS 1. BCD (TOY), CF 2. BCD (TOY), 3. BCD (TOY), SBS 4. BCD (TOY), BCD (Yer), CF, SBS 5. BCD (TOY), BCD (Yer), CF 6. BCD (TOY), BCD (Yer) 7. BCD (TOY), BCD (Yer), SBS BCD (TOY) = Binry coded deciml time of yer CF = control functions SBS = Stright binry seconds BCD (Yer) = Binry coded deciml yer IRIG B120 formt signl A list of the most populr supported IRIG formts is shown in the tble below. 35

36 Common supported IRIG signl formts A130 B120 D121 E121 G141 H121 A132 B122 D122 E122 G142 H122 A133 B123 Other formts re lso supported plese contct ViLite Communictions for more detils Module Interfce rtings Logic interfce, TTL 5V Absolute mximum voltge rting -0.5 to +5.5V No dmge Input, Logic Low (mx) <0.8V Input, Logic High (min) >2.0V Output, Logic Low (mx) Output, Logic High (min) Drive cpbility Short circuit protection <0.4V no lod >4.8V no lod 1k ohms No Logic interfce, RS232 Absolute mximum voltge rting -15 to +15V No dmge Input, Logic Low (mx) <0.8V Input, Logic High (min) >2.6V Output, Logic Low (mx) Output, Logic High (min) Drive cpbility Short circuit protection <-3.2V no lod >+3.2V no lod 3k ohms Yes Logic interfce, RS422/485 Absolute mximum voltge rting -12 to +12V No dmge Input, Logic Low (mx) <0.8V Common mode referenced to GND Input, Logic High (min) >2.0V Common mode referenced to GND Output, Logic Low (mx) <0.8V t 27 ohms Common mode referenced to GND Output, Logic High (min) >2.0V t 27 ohms Common mode referenced to GND Output Differentil >1.5V t 27 ohms Output Differentil >2.0V t 50 ohms Drive cpbility 27 ohms Short circuit protection Yes Logic interfce, I2C Absolute mximum voltge rting -0.3 to +5.3V No dmge Input, Logic Low (mx) <1.5V Input, Logic High (min) >3.5V Output, Logic Low (mx) Output, Logic High (min) Drive cpbility Short circuit protection <0.6V no lod >4.3V no lod 1k ohms No Logic interfce, Open Drin, output For detils of opertion see Opertionl pull up voltge Mximum lod current Short circuit protection 0 to 15V No dmge 50mA No Note: Negtive voltge on the output will be clmped by the FET body diode; you must ensure tht these do not exceed current rting. 36

37 Note: Note: When fitted in chssis with controller crd (i.e. SNMP nd web controller or summry lrm crd) or if fitted ctive bckplne (ie SATCOM6) the lrm lines mybe loded nd pulled up, see chssis hndbook When fitted in chssis or enclosure djcent to RF switch or RF splitter crd, lrm lines mybe loded nd pulled up, see chssis hndbook Power interfce, +12V, input ALL modules EXCEPT High power TX module Nominl input voltge 12V Typicl input voltge rnge 11 to 13V Mximum opertionl voltge rnge 9 to 16V High power TX module ONLY Nominl input voltge Mximum opertionl voltge rnge 12V 11.5 to 13V Anlogue interfce, lser diode bis, output For detils of opertion see Typicl output voltge 1.25V for 50mA bis current Typicl output voltge rnge 0 to 2.5V Mximum output voltge rnge -5 to +5V Short circuit protection No Anlogue interfce, photodiode received light level, output For detils of opertion see Typicl output voltge 4.0V t 4.5dB opticl input power Typicl output voltge rnge 1 to 4V Mximum output voltge rnge 0 to +5V Short circuit protection No Internlly generted LNB power supply nd tone Voltge set to LOW Nominl output voltge 13.4V, Output select = LOW Output voltge rnge 12.4 to 14.4V Current rting 700mA per chnnel for single trnsmit chnnel (i.e. single trnsmitter or trnsceiver module). 350mA per chnnel for dul trnsmit chnnel, 700mA totl (i.e. dul trnsmitter module). Short circuit protection Yes Voltge set to HIGH Nominl output voltge 18.5V, Output select = HIGH Output voltge rnge 17.5 to 19.5V Current rting 700mA per chnnel for single trnsmit chnnel (i.e. single trnsmitter or trnsceiver module). 350mA per chnnel for dul trnsmit chnnel, 700mA totl (i.e. dul trnsmitter module). Short circuit protection Yes Voltge BOOST ctive Nominl output Voltge incresed 1V, Output boost = ENABLE Voltge when set to AUX Nominl output voltge Output voltge rnge Current rting Short circuit protection TONE ctive Nominl output level Output rnge Nominl frequency Frequency ccurcy 22V, AUX mode = ON 21 to 23V 150mA per chnnel for single trnsmit chnnel (i.e. single trnsmitter or trnsceiver module). 150mA per chnnel for dul trnsmit chnnel, 300mA totl (i.e. dul trnsmitter module). Yes 0.6Vp-p, Tone Gen = ACTIVE 0.4 to 1.2Vp-p 22kHz 20 to 24 khz RF connectors Mximum RF input power, no dmge +15dBm typicl, check module spec in section 6, or contct ViLite communiction Mximum usble input power See module P1dB rting in section 6 Mximum RF output power +15dBm typicl dependent on type nd ppliction, contct ViLite communiction See notes in sections 2.13 nd

38 Opticl connections Mximum opticl input power, no dmge Mximum usble input power Opticl output power +8dBm, contct ViLite communiction for more detils +6 dbm +4.5dBm typicl for stndrd 3mW TX modules +7dBm typicl for DWDM 5mW modules +10.8dBm typicl for 12mW modules Logic interfce, TX_AGC_ON nd RX_AGC_ON (Yellow link nd Blue link modules) Absolute mximum voltge rting -0.3 to +5.3V No dmge Input, Logic Low (mx) <1.5V Input, Logic High (min) >3.5V Impednce cpbility Short circuit protection 10k ohms No 38

39 Increse of noise figure (db) HRX-HB-7 VIALITEHD RF LINK HANDBOOK 3 System integrtion 3.1 Link loss budget clcultions The link gin (trnsmitter RF input level to receiver RF output level) depends on the following fctors: Opticl loss (due to connector insertion loss nd opticl fibre loss). Trnsmitter gin setting. Receiver gin setting. The ctul link gin cn be determined s follows: 3.2 Opticl loss versus gin Link gin = Nominl Link Gin (2 x opticl loss) [db] (Where opticl loss = connector insertion losses + fibre losses) The dditionl electricl insertion loss in db resulting from opticl losses is equl to 2 times tht of the opticl loss in db. This is due to the physics of the opticl-to-electricl conversion process in the receiver. For exmple, 1dB increse in opticl insertion loss will result in 2dB decrese in RF signl t the output of the opticl receiver. For single-mode fibre (e.g. SMF28), the opticl loss t the 1310nm operting wvelength of the ViLiteHD link is 0.4dB/km. For 1550nm operting wvelength, the opticl loss of the ViLiteHD link is 0.2dB/km. This is incresed if the fibre is under excessive tension, compression or is bent into smll rdius. For clen, new, undmged single-mode connectors, the opticl insertion loss is typiclly 0.2dB per connector. Note: The losses t the opticl connections of the trnsmitter nd receiver re llowed for during mnufcture of the module, nd my be ignored during link gin clcultions. For short links (<250m) contining no dditionl opticl connectors, nd in which the fibre is not subject to ny strin, the opticl pth loss cn be ignored. 3.3 Opticl loss versus noise figure As the opticl loss increses there will be corresponding increse in noise, the chrt below shows the pproximte reltionship of opticl loss to noise figure increse for stndrd L-Bnd HTS link. Below re grphs tht shows the chnge in noise figure of some populr link types. For links with high power trnsmitters see section 0. Note: If you operte the ViLiteHD modules in RLL AGC mode it is possible to msk opticl loss vritions, but this is not lwys desirble km 10km 10km 20km 15km 30km Opticl Loss (db) 20km 40km 25km 50km Fibre length t 1310nm t 1550nm Increse in Noise Figure (db) versus opticl loss (db); L-Bnd HTS link -11dB gin trnsmitter, +20dB gin receiver t 1.2GHz 39

40 Increse of noise figure (db) Increse of noise figure (db) Increse of noise figure (db) HRX-HB-7 VIALITEHD RF LINK HANDBOOK Fibre length 2 5km 10km 15km 20km 25km t 1310nm 10km 20km 30km 40km 50km t 1550nm Opticl Loss (db) Increse in Noise Figure (db) versus opticl loss (db), UHF/VHF link -15dB gin trnsmitter, +15dB gin receiver t 500MHz Fibre length 2 5km 10km 15km 20km 25km t 1310nm 10km 20km 30km 40km 50km t 1550nm Opticl Loss (db) Increse in Noise Figure (db) versus opticl loss (db), GPS link -5dB gin trnsmitter, +5dB gin receiver t 1500MHz km 10km 10km 20km 15km 30km Opticl Loss (db) 20km 40km 25km 50km Fibre length t 1310nm t 1550nm Increse in Noise Figure (db) versus opticl loss (db), GPS link -5dB gin trnsmitter, +20dB gin receiver t 1500MHz 40

41 3.4 Gin versus frequency response The frequency response is not significntly ffected by the gin setting of the ttenutors used in ViLiteHD. These hve flt frequency response over the full operting rnge of the product. Figures below re typicl L-Bnd HTS modules responses. Gin plots versus TX gin (3dB steps) t RX gin 20dB Gin plots versus TX gin (0.5dB steps) t RX gin 20dB Gin plots versus RX gin (3dB steps) t TX gin -11dB Gin plots versus RX gin (0.5dB steps) t TX gin -11dB 3.5 P1dB versus trnsmitter gin The input P1dB of the link is dependent on the trnsmitter gin. Incresing the trnsmitter gin will decrese the link input P1dB.. Input P1dB versus TX gin setting (950/1200/1700/2150MHz) P1dB input (dbm) MHz 1200MHz 1700MHz 2150MHz TX gin setting (db) L bnd Input P1dB versus Tx gin t Rx gin 20dB 41

42 GPS input P1dB versus Tx gin t Rx gin 5dB Widebnd input P1dB versus Tx gin t Rx gin 15dB Output P1dB versus TX gin setting (950/1200/1700/2150MHz) P1dB output (dbm) MHz 1200MHz 1700MHz 2150MHz TX gin setting (db) L bnd output P1dB versus Tx gin t Rx gin 20dB 42

43 GPS output P1dB versus Tx gin t Rx gin 5dB 3.6 P1dB versus receiver gin Widebnd output P1dB versus Tx Gin t Rx gin 15dB The input P1dB of the link is not significntly ffected by the receiver gin. Incresing the receiver gin hve little effect on the link input P1dB, unless the output of the receiver pproches sturtion. Figures below re typicl L-Bnd HTS modules responses. Input P1dB versus RX gin setting (950/1200/1700/2150MHz) P1dB input (dbm) MHz 1200MHz 1700MHz 2150MHz RX gin setting (db) L bnd input P1dB versus Rx gin t Tx gin -11dB 43

44 GPS input P1dB versus Rx gin t Tx gin -5dB Widebnd input P1dB versus Rx gin t Tx gin -15dB Output P1dB versus RX gin setting (950/1200/1700/2150MHz) P1dB output (dbm) MHz 1200MHz 1700MHz 2150MHz RX gin setting (db) L bnd output P1dB versus Rx gin t Tx gin -11dB 44

45 GPS output P1dB versus Rx gin t Tx gin -5dB Widebnd output P1dB versus Rx gin t Tx gin -15dB 3.7 P1dB, key observtions The P1dB is highly dependent on the gin setting of the trnsmitter, in most configurtions the linerity of the link is dependent on compression of the lser nd its ssocited mplifier, tht re both situted fter the gin control stge in the trnsmitter. At high link gins it is possible to observe some compression in the receiver, but only when this pproches its mximum gin setting. 3.8 Noise figure versus trnsmitter gin The noise figure of the link is dependent in the trnsmitter gin setting. Incresing the trnsmitter gin will reduce the noise figure. Figures shown below re typicl L-Bnd HTS modules responses. Noise Figure versus TX gin (RX gin +20dB) Noise figure (db) MHz 1200MHz 2150MHz TX gin setting (db) Noise figure versus TX gin t frequency, RX gin 20dB 45

46 3.9 Noise figure versus receiver gin The noise figure of the link is not significntly ffected by the receiver gin. Incresing the receiver gin will slightly reduce the noise figure. Figures shown below re typicl L-Bnd HTS modules responses Noise figure versus RX gin setting (TX gin -11dBm) Noise figure (db) MHz 1200MHz 2150MHz Gin Setting (db) Noise figure versus RX gin t frequency, TX gin -11dB 3.10 Noise figure, key observtions The noise figure of the link is pproximtely linerly relted to the trnsmitter gin setting. The noise figure reduces s the trnsmitter gin is incresed. The receiver gin only hs minor impct on the link noise figure Link IP3 There is reltively simple reltionship between P1dB nd IP3 for ViLiteHD links. This is dependent on the compression chrcteristics of the mplifiers nd lser used. The IP3 of ViLiteHD link is generlly 12 db bove the P1dB Spurious free dynmic rnge The dynmic rnge of the system is fundmentlly set by the choice of lser nd the opticl loss. Trnsmitter nd receiver gin cn be used to optimise this for prticulr pplictions. All stndrd ViLiteHD links re equipped with high power DFB lsers to give mximum dynmic rnge Phse noise The ViLiteHD link does not hve ny mixing or frequency conversion in the min RF pth, but some residul phse noise cn be mesured. This phse noise is introduced by both the RF mplifiction elements nd the lser control-loop, below re grphs tht give typicl performnce of ViLiteHD links. No ttempt hs been mde to remove mesure system noise; hence the results show the compound mesurement system nd link performnce. At both the lower frequency (10MHz) nd the high frequency (4GHz) we believe tht significnt noise contribution ws mde by the mesurement system. 46

47 Phse Noise of ViLiteHD widebnd link mesured t 10MHz Phse Noise of ViLiteHD widebnd link mesured t 500MHz 47

48 Phse Noise of ViLiteHD widebnd link mesured t 1000MHz Phse Noise of ViLiteHD widebnd link mesured t 1500MHz 48

49 Phse Noise of ViLiteHD widebnd link mesured t 2000MHz Phse Noise of ViLiteHD widebnd link mesured t 4000MHz 3.14 Link dely The ViLiteHD link introduces smll mount of dely to the system, similr to the contribution of n mplifier. The typicl dely contribution is shown below. You should lso ccount for dely through RF nd fibre cbles s these re likely to be much higher thn the dely in the link fibre optic modules. 49

50 Fibre optic link trnsmit nd receive pir 13.5ns Fibre optic cble 5ns per meter, check mnufctures specifiction RF cble ns per meter dependent on cble type. LMR ns per meter LMR ns per meter LMR ns per meter LMR ns per meter RG ns per meter, dependent on dielectric RG ns per meter, dependent on dielectric RG ns per meter RG ns per meter Delys quoted re typicl for these cble types, construction of cbles of the sme type will vry between mnufcturers (i.e. fom/ PTFE/ solid polyethylene dielectric). If dely is criticl plese check your mnufcturers cble specifiction or electriclly test the cbles Group dely The ViLiteHD link hs brodbnd frequency response nd only contributes smll mount of group dely. Plots below show typicl group dely responses. Group dely cross the full bnd of FOL 0.5ns, pek to pek, typicl Group dely cross ny 36MHz bnd of FOL: 0.1ns, pek to pek, typicl All modules operting below L-Bnd HTS will be similr to the shown L-Bnd HTS Group dely plot using L-Bnd HTS Tx connected to n L-Bnd HTS Rx vi 0.5m fibre, MHz All modules operting bove L-Bnd HTS will be similr to the Ultr Widebnd. Group dely plot using n Ultr Widebnd Tx connected to n Ultr Widebnd Rx vi 0.5m fibre, MHz 50

51 Gin Vrition (db) Gin Vrition (db) Gin Vrition (db) HRX-HB-7 VIALITEHD RF LINK HANDBOOK 3.16 Effects of temperture Effect of temperture on gin The gin of ViLiteHD module will reduce s temperture increses. The grph below shows chnge in RF gin versus the room temperture gin. The grphs show the effect of temperture both inside nd outside the specified operting temperture rnge. The typicl gin versus temperture slope is defined in the dt for the module types given in section 6. The grphs below show the performnce of stndrd trnsmitters. High power nd DWDM trnsmitters hve superior performnce, this is detiled in section Link Tx Rx Temp (degc) Chnge of Link/Trnsmitter/Receiver gin t temperture, t 1.2GHz MHz 1200MHz 1700MHz 2150MHz Temp (degc) Chnge of link gin t temperture, versus frequency MHz 1200MHz 1700MHz 2150MHz Temp (degc) Chnge of trnsmitter gin t temperture, versus frequency 51

52 P1dB Vrition (db) NF Vrition (db) Gin Vrition (db) HRX-HB-7 VIALITEHD RF LINK HANDBOOK MHz 1200MHz 1700MHz 2150MHz Temp (degc) Chnge of receiver gin t temperture, versus frequency Effect of temperture on noise figure The link noise figure will be incresed s temperture increses. The grph below shows chnge in noise figure versus the room temperture noise figure. The grph shows the effect of temperture cross n extended temperture rnge MHz 1200MHz 1700MHz 2150MHz Temp (degc) Effect of temperture on P1dB Chnge of link noise figure t temperture The link input P1dB will be incresed s temperture increses. The grph below shows chnge in P1dB versus the room temperture P1dB. The grph shows the effect of temperture cross n extended temperture rnge MHz 1200MHz 1700MHz 2150MHz Temp (degc) Chnge of link P1dB t temperture 52

53 3.17 RF isoltion ViLiteHD crds re designed to offer excellent isoltion in opertion, both isoltion between the seprte chnnels of dul modules nd isoltion from module to module in chssis or enclosure mounted system. The RF components for ech chnnel of crd re fitted within metl shield tht gives high level of isoltion. Modules operting t 3GHz or more re fitted with n dditionl rer side shield tht gives improved high frequency isoltion RF isoltion, plug-in nd blindmte crds The results re shown for n L-Bnd HTS test system tht use rnge of ViLiteHD crds, fitted in two 3U chssis. The results show the performnce of the complete system. The uplink nd down link pths ws composed of the following components: Uplink: Input > DTX (chssis B) > 2m of fibre > DRX (chssis A) > high isoltion Switch(chssis A) > output Downlink: Input > DTX (chssis A) > 2m of fibre > DRX (chssis B) > output In this configurtion both switches re configured s through switches, with switch input A (DTX output) connected to switch output B (UL output). DL input UL output B B B A A A B A Chssis A BLANK DRX DTX BLANK SWITCH SWITCH BLANK BLANK BLANK BLANK BLANK BLANK BLANK SNMP PSU PSU A B A B A B A B Chssis B BLANK DRX DTX BLANK BLANK BLANK BLANK BLANK BLANK BLANK BLANK BLANK BLANK SNMP PSU PSU DL output UL input L-Bnd HTS isoltion test system RF isoltion, plug-in nd blindmte crds, within module The results below show the typicl isoltion between the two chnnels of system using dul crd. The verge isoltion cross the L- Bnd HTS frequency rnge is ~68dB. The dominnt lekge is between chnnel A nd chnnel B of both the DTX nd the DRX. Input: Port A of the DTX (chssis B) Output: Port B of the Switch (chssis A) Set up: Though gin is clibrted out, i.e. norml Uplink gin (~0dB for this system) is subtrcted from the mesured results. 53

54 Isoltion between chnnel A nd chnnel B of dul module link with high isoltion switch RF isoltion, plug-in nd blindmte crds, between modules The results below show the typicl isoltion between the uplink nd downlink chnnels of system using dul crd. The verge isoltion cross the L-Bnd HTS frequency rnge is ~72dB. The dominnt lekge pth in this cse is between djcent DTX nd DRX modules. Input: Port A of the DTX (chssis A) Output: Port A of the DRX (chssis A) Set up: Though gin is clibrted out, i.e. norml Uplink gin (~0dB for this system) is subtrcted from the mesured results. Isoltion between UL nd DL using dul module link RF isoltion, Blue link nd Yellow link crds mounted in other ViLite enclosures Other ViLiteHD enclosures re designed to offer similr isoltion. Below is plot tken between djcent L-Bnd HTS modules in SATCOM6 outdoor enclosure. The verge isoltion cross the L-Bnd HTS frequency rnge is ~70dB in SATCOM6. Test: Set up: Isoltion between L-Bnd HTS TX in slot 3 nd L-Bnd HTS TX in slot 4 of SATCOM6 Though gin is clibrted out, i.e. norml Uplink gin (~0dB for this system) is subtrcted from the mesured results. 54

55 Hrmonic rejection (dbc) HRX-HB-7 VIALITEHD RF LINK HANDBOOK Smple isoltion between djcent modules in SATCOM nd Hrmonic rejection The second hrmonic rejection is strongly dependent on how your link is configured; the chrt below shows the typicl performnce in the following configurtion. Link Type: L-Bnd HTS Device under test: HRT-L1-8R-33-S1310 HRR-L1-8R-03 Link gin: Set to defult (-11/+20dB) Input Tone: 1GHz Opticl loss: 0dB Hrmonic rejection = Output power of fundmentl (1GHz) Output power of hrmonic (2GHz) nd Hrmonic Input power (dbm) 2 nd hrmonic rejection versus input power for n L Bnd link 55

56 3.19 Typicl system configurtion with fixed gin modules The digrm below illustrtes typicl communictions system configurtion. RF feeds for Antenn SSPA nd LNA ViLiteHD chssis Ptch cbles Cble Termintion box Cross site cble Cross site cble Cble Termintion box Ptch cbles ViLiteHD chssis Modem The link gin for the fixed gin systems depends solely on the loss through the opticl fibre link from trnsmitter to receiver. There is Received Light Level (RLL) nlogue monitor output on the receiver modules which cn be used to mesure the mount of lser light from the trnsmitter reching the receiver during opertion. The RLL threshold lrm (which is triggered when the RLL drops below preset level) cn be used to determine if the opticl link hs been dmged or degrded Commissioning of communictions link This commissioning procedure illustrtes the processes required to instll nd set up communictions link with gin control. The exmple describes the commissioning of n L-Bnd HTS interfcility link. We will be considering the instlltion of the following system. A down converter provides n output signl in the L- bnd. The signl must be conveyed over 1500m of fibre, through bulkhed t ech sttion, to the modem. An lrm must trigger if the opticl pth is dmged. 1. Instll the link, connecting ll opticl ptch cords nd cross-site fibre optic cbles. Clen ALL opticl connectors BEFORE mting with the modules. 2. Power up the equipment nd llow 15 minutes to wrm up. 3. Ensure tht the RF power into the trnsmitter module is set to optimum for your system. Use brodbnd RF power meter for this mesurement. Typiclly this is the input level t which the link s intermodultion distortion (IMD) is -40dBc. This vlue of input power cn be clculted from your dtsheet, it is typiclly 8dB less thn the input P1dB. 4. Clculte the pproximte opticl ttenution in the fibre pth. In our cse, we hve two bulkhed 0.2dB ech, 1500m of opticl 1310nm = 0.6dB, giving totl of 1dB of opticl loss. The totl RF gin of the system should be the nominl link gin minus 2x the opticl loss. 5. Confirm tht the RF output from the receiver is correct (to within mesurement ccurcy). If the loss is much higher (> 3dB) thn clculted, the most likely explntion is dirt on the opticl connectors. If this is the cse, clen ech connection in turn until the required system gin is restored. 56

57 PSU PSU SNMP FOL TRX Single FOL RX Single FOL TX HRX-HB-7 VIALITEHD RF LINK HANDBOOK 4 Mechnicl detils 4.1 Shock nd vibrtion ViLiteHD modules hve been designed nd tested to operte under significnt mechnicl stress; the tests run fr exceed norml ground fixed opertionl use. This hs been done to ssure the robustness nd relibility of the designs. Below re detiled the tests undertken. The system under test ws set of 3U chssis mounted modules, powered by chssis mounted AC PSUs. The system is detiled below: HRK3S 3U chssis HPS-3 AC PSU HPS-3 AC PSU HRC R-20 SNMP controller HRT-N1-6R-35-S1310 1GHz TX HRR-N1-6R-05 1GHz RX HRX-N1-8D-05-C1530 1GHz TRX blindmte F6R1/0.5 Opticl test cble F8R1/0.5 Opticl test cble Lptop (running SNMP web interfce), not subject to vibrtion or shock SLOTS RF Port Fibre optic port RF cble A Fibre optic cble A B B A A A A Rfout Vibrtion nd shock test configurtion, rer view Rfin Vibrtion pplied to the system: Vibrtion (Sinusoidl) Plnes 3 plnes, X/Y/Z Severity 5G, Hz, 1 octves per minute. Durtion 1/2 hour in ech xis Stndrd IEC68-2-6: 1982 Shock pplied to the system: Shock (hlf sine); Axis: 6 xis, X+/X-/Y+/Y-/Z+/Z- Severity 15g/ 11ms Shock (hlf sine) Durtion 3 shocks ech direction of ech xes Stndrd IEC :1987 A continuous wve RF test signl ws pplied to the TX FOL nd monitored on the RX FOL vi spectrum nlyser. The spectrum nlyser used both mximum nd minimum hold to cpture performnce extremes. The test pss requirement ws s follows: Continuous RF opertion to specifiction. No SNMP error events to be logged. No front pnel LED errors to be shown. No visible mechnicl dmge or degrdtion. + Z xis - + Y xis - + X xis - Orienttion of shock nd vibrtion 57

58 Spectrum plot of 500MHz CW tone when under vibrtion Smple plot of vibrtion in Y xis Smple plot of Hlf Sine Shock in Y+ xis No mesureble chnge in RF power level ws detected. The system under test pssed ll the vibrtion nd shock test, detiled bove. A full test report is vilble, contct ViLite Communictions for more detils. 58

59 4.2 Electricl interfces For typicl levels nd mximum rtings see detils sections In ll cses GND is used s the voltge reference Signl description, lphbetic This section gives brief overview of the function of ech signl line, more detils re given in the following sections +12Vdc Module DC power input ALARM Open collector lrm for chssis modules BUC_feed Low frequency or DC power feed to the RF output pin of receiver modules LD_MON Lser diode nlogue bis monitor proportionl lser diode current (see section 2.3.7) LNA_feed Low frequency or DC power feed to the RF input pin of trnsmitter modules, this my lso support tone signlling MS Seril interfce module select, this enbles the module to ccept seril control dt RLL_MON Received light level nlogue monitor, voltge proportionl to the received opticl crrier power (see section 2.3.7) RTS_485 Request to send (RTS) signl used by RS485 modules RX_232_OUT Electricl output used for either TTL or RS232 RX_422_OUT- Electricl output used for either RS422 or RS485 module, negtive pin RX_422_OUT+ Electricl output used for either RS422 or RS485 module, positive pin RX_AGC_ON Input to enble or disble AGC function on Blue link nd Yellow link receiver module RX_ALARM Open collector lrm for Blue link nd Yellow link modules SCL Seril interfce clock line, uses I2C stndrd SDA Seril interfce dt line, uses I2C stndrd TX_232_IN Electricl input for either TTL or RS232 module TX_422_IN- Electricl input for either RS422 or RS485 module, negtive pin TX_422_IN+ Electricl input for either RS422 or RS485 module, positive pin TX_AGC_ON Input to enble or disble AGC function on Blue link nd Yellow link trnsmitter module TX_ALARM Open collector lrm for Blue link nd Yellow link modules Plug-in module, 9 wy D type module connector The chssis D-Type 9 wy connector llows ccess to the interfces of the module, see for connections Function Type Typicl Level Mximum level TX_422_IN+ Input digitl RS422 input See TX_422_IN- Input digitl RS422 input See TX_232_IN Input digitl RS232 input See RX_422_OUT+ Output digitl RS422 output See RX_422_OUT- Output digitl RS422 output See RX_232_OUT Output digitl RS232 output See RTS_485 Input digitl TTL input See Plug-in module, Chssis interfce connectors These signls re vilble from the modules vi the chssis connectors. Dt given in this tble is ONLY pproprite to those interfce lines connected to RF link modules. See the pproprite chssis hndbook for pin outs. Function Type Typicl Level Mximum level ALARM Open Drin output GND or OPEN See LNA_feed Power input See 2.5 See 2.5 BUC_feed Power input See See LD_MON Anlogue output See See RLL_MON Anlogue output See See

60 4.2.4 Blue link nd Yellow link module, TX These signls re vilble from the modules interfce connector, see nd for pin outs. Function Type Typicl Level Mximum level TX_422_IN+ Input digitl RS422 input See TX_422_IN- Input digitl RS422 input See TX_232_IN Input digitl RS232 input See Vdc Power input 12V See LNA_feed Power input See 2.5 See 2.5 LD_MON Anlogue output See See TX_ALARM Open Drin output GND or OPEN See TX_AGC_ON Input digitl TTL input See SCL Digitl Input I2C See SDA Digitl Input/Output I2C See Blue link nd Yellow link module, RX These signls re vilble from the modules interfce connector, see nd for pin outs. Function Type Typicl Level Mximum level BUC_feed Power input See See Vdc Power input 12V See RX_422_OUT+ Digitl Output RS422 output See RX_422_OUT- Digitl Output RS422 output See RX_232_OUT Digitl Output RS232 output See RTS_485 Input digitl TTL input See RLL_MON Anlogue output See See RX_ALARM Open Drin output GND or OPEN See RX_AGC_ON Input digitl TTL input See SCL Digitl Input I2C See SDA Digitl Input/Output I2C See Physicl interfces Plug-in nd Blindmte modules Plug-in module - dimensions 131mm 204mm 26mm Weight: 240g typicl 300g mximum 60

61 Plug-in module connections, 9 wy D type The connections re only vilble from the bckplne when the module is fitted into n pproprite chssis Pin Description Pin Description Pin Description 1 GND 4 TX_232_IN 7 Do not use 2 TX_422_IN+ 5 Do not use 8 Do not use 3 TX_422_IN- 6 Do not use 9 Do not use Trnsmitter module TX, with digitl chnnel Pin Description Pin Description Pin Description 1 GND 4 Do not use 7 RX_422_OUT- 2 Do not use 5 Do not use 8 RX_232_OUT 3 Do not use 6 RX_422_OUT+ 9 RTS_485 Receiver module RX, with digitl chnnel Pin Description Pin Description Pin Description 1 GND 4 TX_232_IN 7 RX_422_OUT- 2 TX_422_IN+ 5 Do not use 8 RX_232_OUT 3 TX_422_IN- 6 RX_422_OUT+ 9 RTS_485 Trnsceiver module TRX, with digitl chnnel Pin Description Pin Description Pin Description 1 GND 4 TX1_232_IN 7 TX2_422_IN- 2 TX1_422_IN+ 5 Do not use 8 TX_232_IN 3 TX1_422_IN- 6 TX2_422_IN+ 9 Do not use Dul trnsmitter module DTX, with digitl chnnel Pin Description Pin Description Pin Description 1 GND 4 RX1_232_OUT 7 RX2_422_OUT- 2 RX1_422_OUT+ 5 RTS1_485 8 RX2_232_OUT 3 RX1_422_OUT- 6 RX2_422_OUT+ 9 RTS2_485 Dul receiver module DRX, with digitl chnnel For the dul chnnel modules (Trnsceiver, Dul trnsmitter or Dul receiver) ; chnnel 1 (i.e. RX, TX1 or RX1) is trnsmitted through the A fibre nd chnnel 2 (i.e. TX, TX2 or RX2) is trnsmitted through the B fibre. Note: Dt on the connector is only for the module fitted in tht 5HP slot. Connections in blue re optionl nd only vilble on some types of module Plug-in module connections, bckplne I2C These connections re not externlly vilble but mybe used to configure the module in some users equipment, they re vilble from the rer 30 wy DIN connector. Only I2C nd ssocited pins re shown below The MS is TTL input; see section for voltge levels. The modules re SELECTED by HIGH nd DESELECTED by LOW, chssismodules hve wek internl pull up, hence they re SELECTED when open circuit. Pin B6 B7 B8 A10 / B10 / C10 Description MS (module select) SCL (seril clock) SDA (seril dt) GND 61

62 4.3.2 Blue link module connections Blue link module dimensions With mounting brcket Detiled mechnicl drwings re vilble of ll ViLiteHD modules on request. 21.5mm 74mm Without mounting brcket 60mm 20mm All modules re supplied with mounting brcket. The unit my be secured by: 74mm 2*M2.5 tpped hole on the underside OR 2*M3 clernce holes in the mounting brcket 46.5mm Weight with mounting brcket fitted Weight without mounting brcket fitted 130g typicl 112g typicl Blue link module, connections Pin Blue link Trnsmitter Blue link Receiver 1 TX_422_IN+ BUC_feed 2 TX_422_IN- Not used 3 TX_232_IN Not used 4 GND GND 5 +12Vdc +12Vdc 6 Not used RX_422_OUT+ 7 Not used RX_422_OUT- 8 Not used RX_232_OUT 9 LNA_feed RTS_ LD_MON RLL_MON 11 Not used Not used 12 TX_ALARM RX_ALARM 13 TX_AGC_ON RX_AGC_ON 14 SCL SCL 15 SDA SDA Note: Colour indictes relevnt connector drwing. Connections in blue re optionl nd only vilble on some types of module. Contct No 1 Blue link: Top view, 15 pin heder (mle) Connector Type: Molex (C-Grid III), single row Comptible mting connectors PPM # Description Supplier Supplier prt number CGRID3 15 wy housing Molex Crimp connector AWG Molex

63 Blue link mounting dimensions, with rer plte Blue link mounting dimensions, without rer plte 63

64 4.3.3 Yellow link module connections Yellow link module - dimensions 12.1mm Receiver 15.6mm Trnsmitter 40mm Stndrd fibre optic cble length 260mm 65mm Detiled mechnicl drwings re vilble of ll ViLiteHD modules on request. Weight trnsmitter 60g typicl Weight receiver 55g typicl Yellow link - Pinout Pin Yellow link Trnsmitter Yellow link Receiver 1, 2 TX_422_IN+ BUC_feed 3, 4 TX_422_IN- Not used 5, 6 TX_232_IN Not used 7, 8 GND GND 9, Vdc +12Vdc 11, 12 Not used RX_422_OUT+ 13, 14 Not used RX_422_OUT- 15,16 Not used RX_232_OUT 17, 18 LNA_feed RTS_485 19, 20 LD_MON RLL_MON 21, 22 Not used Not used 23, 24 TX_ALARM RX_ALARM 25, 26 TX_AGC_ON RX_AGC_ON 27, 28 SCL SCL 29, 30 SDA SDA Note: Colour indictes relevnt connector drwing. Connections in blue re optionl nd only vilble on some types of module. Contct No 1 Comptible mting connectors PPM # Description Supplier Supplier prt number Stright EDGE connector Toby Electronics 802-S-30-S-R Right ngle EDGE connector Digikey EEC15DRAN-ND EDGE: Top View, 30 wy double sided heder Connector Type: 2.54mm double sided edge connector Note: Yellow link top nd bottom pins re connected through vis. 64

65 5 Prt numbering 5.1 Prt numbering mtrix Note: Options re dependent on module type. Not ll combintions of options re vilble. Contct ViLite Communictions for more detils. 65

66 5.2 Prt numbering, DWDM wvelengths 66

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