1. Summary
2. Block Diagram
3. Technical Parameters
* Special Notice:
The performance parameters of this manual according to GY/T 194-2003 <CATV system optical workstation technical requirements and methods of measurement> .We get it under the following testing environment.
* Testing Environment:
1.Down optical receiver part :Together with Standard 1550nm External Modulation Optical Transmitter,10km standard optical fiber and optical passive attenuator make the testing circuit .Set with 59 PAL-D analog TV channel signal at range of 47 MHZ ~550MHZ in the fix index loss of circuit, transmit digital TV signal at rang of 550MHZ~862MHZ ,the electricity(8 MHZ bandwidth) digital signal is 10dB lower than analog signal of carrier electricity level. When the input of optical receiver is -1dBm, RF output lever is 104 dBμV , measure C/CTB,C/CSO,C/N.
2. Uplink optical transmitter part: Link Flatness and noise Power Ratio (NPR) dynamic range are circuit index made up by uplink optical transmitter and uplink optical receiver.
★Tips：
The RF signal should be set to be 9～12dB incline output in practical engineering applications for suggestion in order to improve nonlinear index of cable transmission system under optical contactor.
4. Optional Options
Option1: Network Management Module
Option2: Network Management Transponder
Option3: Optical receiver backup module
Option4: Return optical transmitter module (FP laser with isolator are recommended)
Option5: Switching power supply hot backup module
5. Ordering Guide
The defaulted configuration is two-way provided configuration (One optical receiver module and one switching power supply module)；If you need others, please tell us with the downlink, uplink division frequency of two-way channel when ordering.
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Items |
Unit |
Technical Parameters |
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WR8604HC |
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Forward Path |
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Optical Parameters |
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Received Optical Wavelength |
nm |
1100 ~ 1600 |
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Received Optical Power Range |
dBm |
-9 ~ +2 |
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Recommended Range |
dBm |
-3 ~ +1 |
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Optical Fiber Type |
Single-mode |
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Optical Fiber Connector Type |
FC/APC或SC/APC |
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Optical Return Loss |
dB |
> 45 |
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Link Parameters |
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C/N |
dB |
≥ 51 |
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C/CTB |
dB |
≥ 65 |
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C/CSO |
dB |
≥ 60 |
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RF Parameters |
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Frequency Range |
MHz |
45/87 ～750/862 |
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Flatness in Band |
dB |
±0.75 |
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Nominal Output Level |
dBμV |
≥108 |
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Max Output Lever |
dBμV |
≥ 112 |
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Output Return Loss |
dB |
≥16（45～550 MHz）；≥14（550～862 MHz） |
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Output Impedance |
Ω |
75 |
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Return Path |
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Optical Parameters |
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Optical Emission Wavelength |
nm |
1310±10 |
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Laser Type |
FP or DFB |
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Output Optical Power |
mW |
1 ～3 |
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Optical Connector Type |
FC/APC、SC/APC (It is up to users) |
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RF Parameters |
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Frequency Range |
MHz |
5 ~ 30/65 (It is up to users) |
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Link Flatness |
dB |
±1.5 |
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Input Level |
dBμV |
75 ～ 85 |
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Input Return Loss |
dB |
≥16 |
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Output Impedance |
Ω |
75 |
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NPR Dynamic Range |
dB |
≥10（NPR≥30 dB） |
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General Characteristics |
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Supply Voltage |
V |
AC 135~250（50 Hz）或AC 35 ~ 90 （50 Hz） |
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Power Consumption |
W |
≤70 |
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Operating Temperature |
℃ |
-30 ~ +70 |
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Storage Temperature |
℃ |
-30 ~ +70 |
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Relative Humidity |
% |
Maximum 95% non-condensing |
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Dimension |
mm |
430（L）* 250（W）* 160（H） |
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