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Optical Node GWSL862H4J(F)-A
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| Brief Introduction
This Optical Workstation is an ideal solution for medium/large HFC network that requests redundancy and high reliability.
Forward-path optical receiver, return-path optical transmitter, and SNMP responder are built as plug-in units. One optical workstation can be loaded with 2 forward-path optical receivers, 2 return-path optical transmitters, and 2 power supply units, providing good redundancy. The embedded “A/B Switch” senses parameters and switches to back up unit automatically.
Optical AGC is functioned on this optical workstation. The optical AGC keeps RF specifications constant when optical input power varies.
Forward-path is built with 4 RF outputs. Each RF is independently amplified. Gain control and slope control is independently regulated too. The “MGC Control Board” on forward-path provides precision overall gain control, 0.5dB/step.
Product Features
- Modularization design, good redundancy.
- 862MHz platform, upgrade to 1000MHz possible.
- Optical AGC keeps RF output constant, greatly enhancing network stability.
- Forward-path optical receiver accepts -7~+2dBm optical power.
- 4 RF outputs are provided. Output level ≥108dBμV.
- Each output is independently amplified by GaAs power doubler amplifier module.
- Optical link performance C/N≥51dB, C/CTB≥65dB, C/CSO≥61dB.
- Overall MGC and MSC are provided.
- Each RF output’s gain/slope can be independently adjusted.
- “A/B Switch” senses parameters and can switch to backup unit automatically.
- Return-path is built with “Three-State Control Switch” to suppress noise.
- SNMP responder optional.
Technical Specifications
Forward-path Optical Receiver GJS862-WL-A |
Unit |
Specifications |
Optical |
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Wavelength |
nm |
1290~1580 |
Allowable Input Range |
dBm |
-7~+2 |
Optical AGC Range |
dBm |
-7~+2 |
Reflection Loss |
dB |
≥45 |
Connector Type |
- |
SC/APC or FC/APC |
RF |
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Frequency |
MHz |
47/54/87~862MHz |
Output Level |
dBμV |
≥83 |
Frequency Response |
dB |
±0.75 |
Return-Path Optical Transmitter GFS1310-WL-RA |
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|
Optical |
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Wavelength |
nm |
1310 ±20 |
Laser Type |
- |
FP laser (DFB laser optional) |
Transmitting Power |
dBm |
0~+3 |
Optical Power Stability |
dBm |
±0.5 |
NPR Dynamic Range
NPR≥30dB |
dB |
≥15, FP laser
≥20, DFB laser |
Connector Type |
- |
SC/APC or FC/APC |
RF |
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Frequency |
MHz |
5~200 |
Input Level |
dBμV |
77 ±5 |
Frequency Response |
dB |
±0.5 |
Power Supply Unit DYKWJ80-C |
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Input Voltage |
V |
AC 38~65V / 50Hz |
Output Voltage |
V |
24/5V |
Output Current |
A |
3.5/0.3A |
Output Voltage Stability |
- |
≤ ±2% |
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