1 GHz Magnamax series

Transcription

1 1 GHz Magnamax series MLE300601* GN/TN Type 2 Network mplifier (2 or 3 selectable active output ports) Description: The 1 GHz MGNMX series broadband network amplifier is essentially a dropinupgrade module that allows the customer to perform system upgrades without suffering extensive construction costs. The revolutionary MLE300601* provides better performance and enhanced features at low cost. The MLE300601* is designed to reuse the existing power supply, the original amplifier chassis, and fit into the same 9NH series housing as before. The MLE300601* includes a newly manufactured stateoftheart PB assembly that is installed in the original chassis and fully tested as new. The original power supply is retested and refurbished to ensure years of reliable service. Features: The Industry s first 1 GHz Philips/Magnavox style network amplifier that is backwards compatible! Lowcost, easytoinstall, dropinupgrade unit that fits into existing housing offers increased gain to allow for existing spacing. Eliminates new construction altogether, or greatly reduces construction costs! High performance GasFET gain stages deliver Lowest 2 nd and 3 rd Order distortions, superior NR, and low noise figure, while maintaining highest gain and excellent flatness in both forward & return bands. omputer designed, fixed component diplex filters exhibit the highest stop band isolation (>40 db), the best return loss (>22 db), and the lowest insertion loss available (< 0.75 db). Plug and play diplex filters allow quick and low cost changes to both forward & return bands. Plugin G module supplied with either an nalog or QM pilot. Use your existing accessories and plugins at 750 MHz or 870 MHz as replacements or plant extensions. Improved hum modulation. Plugin fuses and a rowbar provide surge protection. Similar layout and look as the original Philips/Magnavox network amplifier, is technician friendly, and will require minimal training. Easily configurable in the field. s before, use 2 or 3 active outputs to meet your system requirements. Increase your existing modules MTBF and reduce service outages by letting us completely disassemble and rebuild your existing amplifier. This is not a modification to your existing amplifier! We install newly manufactured electronic assemblies that upgrade your module in every way. Network mplifier module includes a complete 5year warranty on all installed electronic assemblies. MLE300601* Product Manual (Rev. 6) Page 1

2 MGNMX MLE300601* Functional Block Diagram Symbol definations Plug In Fuse Hybrid mplifier Directional oupler Splitter/ ombiner Plug In Pad, filter, roll corrector RF Input / Output 20dB T.P. Port 3 RF Plug In Equalizer Plug In diplex filter Rev Path Forward Path Post mp Plug In Splitter Main RF In Input Pre amp FR BODE EDB Response Inter stage Pre amp Distribution 20dB T.P. Port 4 RF 20dB T.P. G ontroller Post mp Port 2 RF 20dB T.P. 20dB 20dB 20dB Return RTN mp RR 20dB rowl Bar Option MGNMX MLE300601* ccessory Locations Input FWD FWD Roll orrector Input Port Diplex FWD Interstage Pad FWD Input Pad FWD Input BODE Port 2 RTN Input EDB De Bumper Port 4 RTN Input FWD Interstage D Test Point LS Distribution Port 2 Diplex rowbar Port 2 FWD Port 3 FWD Port 3 Diplex RTN Output FWD Signal Diretor RTN Output Pad Port 3 RTN Input Pad RTN Port 34 FWD Output Pad RTN Roll orrector Port 3 RTN Input Port 2 RTN Input Port 4 RTN Input Port 2 FWD Output Pad Port 4 Diplex Port 4 FWD MLE300601* Product Manual (Rev. 6) Page 2

3 mplifier Setup The MLE300601* network amplifier provides superior 2way performance with more Forward and Return path gain, higher output levels, lower noise figure, better distortion performance, and wider bandwidth than the original module. The extra bandwidth your system will achieve with this direct dropinupgrade module, assuming no additional amplifiers are cut in, will depend on several loss factors that the improved performance must compensate for. This includes increased db losses due to system configuration, taps, the type and length of coax that are encountered based upon the original amplifier db spacing. lthough the physical length of the coax cable span has not increased, the db losses and the cable db changes due to temperature at the highest frequency channels will increase. The amplifier s extra RF gain and plugin G module will help compensate for the additional cable loss as the bandwidth increases and temperature changes, the lower noise figure improves the /N, and the improved distortion performance increases the channel capacity. The MLE300601* has two equal, or three unequal, highlevel RF distribution outputs. plugin output port selector lets you choose either or both secondary outputs by installing a plugin jumper or directional coupler. ll RF test points for the forward and return path provide a 20 db monitor. Return signals can be injected at any forward output test point. In addition, there is a combined return output test point and each return leg has its own input test point as well as an input pad, allowing you to isolate ingress. Each unit accepts a variety of plugin circuits including an interstage response (debumper), which can be used as needed to compensate for system imperfections. The plugin 25amp auto fuses provide power to the power supply itself and/or the output ports as needed. There is a D voltage test point accessible thru the cover as well as a power LED to ensure proper function of the power supply. plugin rowbar provides surge protection by firing at approximately 170 V. The MLE300601* network amplifier can be made backward compatible with the Philips/Magnavox 9NH series housing. Setting the MLE300601* in Manual Mode The forward operational gain is 42.5 db with an output cable tilt of 17 db. The gain is controlled using a plugin Input Pad, an Interstage Pad, and two Output Pads for ports 2 and 3/4 (). The tilt is controlled using a plugin Input, an Interstage, and a Secondary (MLE1000*). 1. Ensure the G switch is in the off position (Manual Mode). 2. onnect a signallevel meter to the forward input test point, measure and document the tilt and RF input level at the highest and lowest system carrier. Note: Both carriers should be at standard analog levels, nonscrambled. 3. Install the correct Input Pad and Input to achieve the designed input level and tilt. Note: The RF input level at the highest frequency should not exceed +7.5 dbmv. 4. onnect the signallevel meter to the forward output test point, measure and document the tilt and RF output level at the highest and lowest system carrier as well as the pilot carrier. 5. If the RF output level at the highest frequency is too high and the input is padded correctly, install the correct Interstage Pad and/or the Output Pads for ports 2 and 3/4 accordingly. Note: The RF output level at the highest frequency should not exceed the maximum operating level of +50 dbmv. 6. If the output tilt is less than required, install a higher value Interstage. 7. If the output tilt is greater than required, install a lower value Interstage. Note: hange the Secondary only if the desired output tilt cannot be achieved by changing the Interstage alone. Setting the MLE300601* in G Mode 1. Perform the complete procedure described in Setting the MLE300601* in Manual Mode if not already completed. 2. Ensure the G switch is in the on position (G Mode). 3. onnect the signallevel meter to the forward output test point and measure the RF output level at the highest system carrier. 4. djust the automatic gain control until the RF output level matches the RF output level obtained in Manual Mode. Note: The nalog G is factory set for an amplifier output level range from +40 to +50 dbmv at the pilot frequency. The plugin pad on the QM G is factory set for an amplifier output level range from +36 to +50 dbmv at the pilot frequency. You can change this pad (MGIP*) depending on the operational output of the MLE300601*. MLE300601* Product Manual (Rev. 6) Page 3

4 Return Path lignment The return operational gain is 18 db. The gain is controlled using plugin Return Input Pads for ports 2, 3, and 4 as well as a Return Output Pad (). The tilt is controlled using a plugin Return (MPBN6REF42*). 1. Set up the return optical link using the design input reference levels for the return transmitter and the system design output levels of the return path receiver. This must be done before you balance any return amplifiers. 2. Document what the amplifier s RF input reference levels are. 3. Use the 20 db Forward Output test point to inject the return carriers or sweep. 4. Verify that the Return Input Pads are all MPBNP900 (0 db). 5. Install the design value Return Output Pad. 6. Install the design value Return. 7. Set the sweep output to the design reference level and set the sweep output for a 20 db test point. 8. hange the Return Output Pad and/or Return until the swept response matches, as close as possible, the stored reference sweep taken at the optical node. 9. Document sweep levels used as well as the Return Pads and Return values. Using mplifiers In Lower Frequency Systems When using the MLE300601* network amplifier in a 1 GHz distribution system, you must use an MLE1000* equalizer. For use in lower frequency systems, such as 750 MHz or 870 MHz, you must consider the best method for handling the reduced bandwidth and channelloading requirement. If you use 1 GHz equalizers in lower frequency systems, you will need to take into account the reduced gain from 1 GHz. Due to the amplifier tilt, there will be some loss in gain from the published operational gain specification at 1 GHz. To avoid any additional loss in gain, it is optimal to use the equalizers that match the system frequency. For a 750 MHz system, use 750 MHz equalizers. For an 870 MHz system, use 870 MHz equalizers. ccessories Factory Installed Plugins Plugin Series Diplex s (not accessible thru the cover, field upgradeable) MLE300XDF01 Forward Roll orrector (not accessible thru the cover, field upgradeable) MLE1202FR Interstage Pad = MPBNP900 Bode = MLEBODE1000 MLEBODE1000 Response (Debumper) = 18 WG buss wire jumper EDB/* Interstage = Factory Selected MLE1000* G/MG Module (nalog Pilots: , MHz) (QM Pilots: 609 MHz) Secondary = MLE MLE1000* Port 2 Output Pad = MPBNP900 Port 3/4 Output Pad = MPBNP900 Port 3/4 Output Selector = MPBNP900 Ports 2, 3, and 4 Return Input Pads = MPBNP900 Return Roll orrector (not accessible thru the cover, field upgradeable) MLE1202RR Return Output Pad = MPBNP900 Fuse 1 (F1), Fuse 2 (F2), Fuse 3 (F3), Fuse 4 (F4) = 25 mp uto Fuse V rowbar Surge Protector (not accessible thru the cover) MLE300601B Required Plugins Plugin Series Input Pad Input MLE1000* Return MPBN6REF42* Optional Plugins Plugin Series 2Way Splitter D8 Directional oupler D12 Directional oupler Plugin Pads for the QM G Module MGIP* Plugin diplex filter options include 40/51, 42/54, 55/70, 65/85 and 85/105 MHz. MLE300601* Product Manual (Rev. 6) Page 4

5 MGNMX NETWORK MPLIFIER ORDERING OPTIONS P N x x x x x x x x x x x U x 2 x x 1 Number of ctive Ports X 1 1 Port (Type 3 LE onfiguration) 23 Bandwidth MHz MHz 1G 1002 MHz 4 Diplex Split D E F G 40/51 MHz 40/54 MHz 42/54 MHz 55/70 MHz 65/85 MHz 56 Forward Path Operational Gain XX db (Type 3 LE with G Level ontrol Option Only) 78 Forward Path Station Tilt XX X Number of Ports 2 2 Ports (Type 2 GN onfiguration) 3 3 Ports (Type 1 TN onfiguration) XX db db XX db db db 9 Forward Level ontrol Option M Manual Gain ontrol (Type 3 LE Only) T Thermal Gain ontrol (Type 3 LE Only) 1 G with MHz nalog Pilot 3 G with MHz nalog Pilot 5 G with 609 MHz QM Pilot 6 G with 711 MHz QM Pilot 1011 Return Path Operational Gain XX XX db db db (Type 3 LE Only) 12 RF Location U ccess through RF Module over 13 Housing Option H Station Housing Included M RF Module Only (No Housing) 14 Input Voltage V 15 urrent Handling 10 mp apacity B 15 mp apacity 16 Fuse 1 25 mp Fuses Installed 2 Shunts Installed ** dditional options are available, please contact your sales representative. MLE300601* Product Manual (Rev. 6) Page 5

6 Standard RF Specifications Parameter Units Forward Reverse Notes Pass Band MHz mplifier Type GasFET PD Silicon Flatness db +/0.5 1, MHz MHz +/0.75 +/0.85 Minimum Full Gain (G mode) db Operational Gain (MG mode) db G 1002 MHz db +2.1/4.5 Return Loss (minimum) db s db 20 (+/0.75) 20 (+/0.5) 4 Noise Figure (typical) db ,6 Hum 15 dbc 60 ( MHz) 55 (510 MHz) 60 (1140 MHz) Bypass urrent (continuous) 15 D urrent Draw (maximum) 1.70 Distortion Rated Level Reference Frequencies Recommended Input Levels Recommended Output Levels hannel Loading TB SO (high side) ross Modulation Notes: 1. Measured with 17 db of simulated cable. MHz dbmv dbmv NTS dbc dbc dbc 1002 / 870 / 750 / 550 / / 7.5 / 7.5 / 7.5 / / 48.1 / 47.1 / 44.7 / (W) with Digital / 5 17 / / Measured using an Interstage = Factory Selected, Secondary = MLE100008, and 0 db plugins for all remaining forward and return locations. 3. Includes a 1 db loss from the Input, a 1 db loss from the Return, and 2.1 db of Bode slope reserved gain. 4. Measured using an Input = MLE100015, Interstage = Factory Selected, Secondary = MLE100008, and 0 db plugins for all remaining forward and return locations. 5. Measured using a Secondary = MLE and 0 db plugins for all remaining forward and return locations. 6. The forward Noise Figure is 9.0 db worstcase and the return is 11.5 db worstcase over the specified pass band. 7. Distortions in Manual mode with 78 W NTS channels and WGN Digital loading 6dBc relative to analog carrier levels from 550 MHz to 1002 MHz. 8. Xmod (@ KHz) specified using 100% synchronous modulation ,8 MLE300601* Product Manual (Rev. 6) Page 6