Timo Rantanen 12.7.2011 1(5) HDO701 FIBRE OPTIC TRANSMITTER HDO701 is a high performance, extremely linear externally modulated 1550 nm transmitter for fibre optic CATV links. This transmitter type has been optimised especially for an analogue channel line up to 862 MHz. Features Management features 1U 19 rack housing Adjustable SBS suppression enables the highest performance at all transmission spans Two optical outputs Built in preamplifier APC circuitry for constant loading Front panel test point High output power option available DWDM wavelength option available Front panel user interface with LCD display, keyboard and status LEDs Remote control of all adjustments by SNMP Fully compatible with Commander and EMS software SNMP versions Monitoring of: drive level RF input level, optical output power laser bias current TEC current internal temperature and internal supply voltages Monitoring and control of: Optical output power (ON/ OFF) Drive level (optical modulation depth) Gain control mode (AGC or manual) SBS threshold setting Channel allocation selection (6, 7 or 8 MHz spacing) for CSO performance optimisation and wavelength
Timo Rantanen 12.7.2011 2(5) Technical specifications Parameter Specification Note Optical parameters Wavelength - standard option 1555±5 nm 1) Wavelength - DWDM option 1547.72 1558.98 nm 2) Output power - standard option 2 x 8.5 dbm 3) Output power - high power option 2 x 10.0 dbm 3) Optical line width 300 khz 4) Relative intensity noise -160 dbc/hz 5) SBS suppression threshold +13 +19 dbm 6) OMI @ 1 ch 4.1 % 7) Number of optical outputs 2 8) RF parameters Frequency range 47 1006 MHz Input level 80 dbµv 9) Flatness ±0.5 db 10) RF impedance 75 Ω RF input return loss 20 db 11) Spurious beats -60 db 12) Test point See note 13) 65 km fibre link, fibre amplifier, CENELEC 42 chs C/N @ 0 dbm to receiver 53 db 14) CTB 65 db 15) CSO 65 db 16) 100 km fibre link, two fibre amplifiers, CENELEC 42 chs C/N @ 0 dbm to receiver 50 db 17) CTB 65 db 18) CSO 63 db 19) General Power consumption 60 W 20) Supply voltages 100 240 VAC / 50 60 Hz 21) Connectors, RF IEC female Management interface RJ-45 Optical SC/APC 22) Dimensions 19 / 1 RU Weight 10 kg EMC compliance EN 50083-2 Enclosure classification IP21 Operating temperature range -10...+50 C 23) Storage temperature range -20...+60 C Operating relative humidity 0 85%
Timo Rantanen 12.7.2011 3(5) Notes 1) This is a variation range between various transmitters. 2) ITU DWDM channels 37, 36,..., 23 @ 100 GHz spacing. 3) Minimum value. 4) Typical line width of the source laser. 5) This is a typical value. The maximum value is -158 dbc/hz. 6) A user can select the SBS suppression threshold. Typical SBS and launch power settings are: <70 km @ +16 dbm, <80 km @ +15 dbm, <90 km @ +14 dbm and >90 km @ +13 dbm. 7) This is the typical OMI for CENELEC 42 chs channel allocation. The minimum value is 3.9 %. 8) Only one output can be used for super trunking when the distance is more than 65 km. However the second output is available for local distributing. 9) The build-in AGC circuit provides the optimum drive level to the modulator. The input level range is 76 82 dbµv. 10) This is a typical value up to 862 MHz. The maximum flatness error generated by the transmitter is ±0.75 db (47...862 MHz) and ±1.5 db (862 1000 MHz). 11) This is a minimum value at 47 MHz. However the minimum value is reduced by 1.5 db / octave on the frequency scale. The absolute minimum is still always 15 db. 12) Maximum value. 13) The test point is located in the input of the transmitter and the attenuation is 20 db. 14) Typical value. The minimum value is 52.5 db. The C/N influence of the optical input power of a receiver can be seen in the following example. The fibre link consists of - HDO701 transmitter, +16 dbm SBS suppression setting - Fibre 40 60 km + optical attenuation, total 14 19 db optical - Fibre optic CATV receiver (BXO, DXO, DVO, HDO, AC8000 etc.) C/N vs. link attenuation 54 53 C/N 52 51 50 2 1 0-1 -2-3 Input power of receiver (dbm) 15) Typical value. The minimum value is 62 db. 16) Typical value at +16 dbm launch power and 65 km fibre. The minimum value is 63 db. 17) Typical value. The minimum value is 49.5 db. The C/N influence of the optical input power of the 2 nd fibre amplifier can be seen in the following example. The fibre link consists of - HDO701 transmitter, +13 dbm SBS suppression setting
Timo Rantanen 12.7.2011 4(5) - Fibre 15 45 km, total 4 11 db optical - Fibre 55 km, total 13 db optical - Fibre optic CATV receiver (BXO, DXO, DVO, HDO, AC8000 etc.) C/N vs. input power of 2nd fibre amplifier 51 C/N 50 49 9 8 7 6 5 4 3 2 Input power of 2nd fibre amplifier (dbm) 18) Typical value. The minimum value is 62 db. 19) Typical value at +13 dbm launch power and 100 km fibre. The minimum value is 62 db. 20) Maximum value. 21) The transmitter has two redundant power supplies and it can be also equipped with -48 VDC supply. The power supplies are removable modules including the hot swap operation. 22) Other connectors are available on request. 23) The higher ambient temperature can lead to a permanent damage in the transmitter. The fans of the transmitter are located in the removable power supply modules and they can be replaced by changing a power supply module without the interruption of the operation.
Timo Rantanen 12.7.2011 5(5) Ordering information HDO701 configuration map DOC0018138 Rev 003 1-2- 3-4- 5-6- 7-8- 9-1 1 1 1 1 1 1 1 1 HDO701 - - - - - - - - 1-1 Optical output power 085 +8.5 dbm, default 100 +10 dbm 2-1 Frequency plan C42 CENELEC 42 chs 3-1 NMS interface A HTTP/ SNMP Ethernet 4-1 Wavelength ITUXX 1548...1560 nm ITU34 1550.12 nm 5-1 Optical connector 1 E2000 2 SC/APC 3 FC/APC-NTT 4 FC/APC-JDS 5 SC/APC with shutter 6 SC/APC, 9 deg 6-1 RF input and optical output location F Both on front side 7-1 Standard or OEM version TELESTEOEM 8-1 Power supply 230230 2 x (100 240 VAC) 048048 2 x (36 72 VDC) 9-1 Power plug EU Euro