| Type: | Fiber Transceiver |
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| Certification: | CE, ISO |
| Condition: | New |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
SR812ST is our latest high-grade two-output CATV network optical receiver. The pre-amplifier adopts full-GaAs MMIC, post-amplifier adopts GaAs module. Optimized circuit design coupled with our 10 years professional design experience, make the equipment achieve good performance indexes. Microprocessor control, digital display the parameters, the engineering debug is especially easy. It is the main equipment to build the CATV network.
Performance Characteristics
High response PIN photoelectric conversion tube.
Optimized circuit design, SMT process production, optimized signal path, make the photoelectric signal transmission more smooth.
Specialized RF attenuation chip, with good RF attenuation and equilibrium linear, high accuracy.
GaAs amplifier device, power doubly output, with high gain and low distortion.
Single Chip Microcomputer (SCM) control equipment working, LCD display the parameters, convenience and intuitive operation, and stable performance.
Excellent AGC performance, when the input optical power range is -9~+2dBm, the output level keep unchanged, CTB and CSO basically unchanged.
Reserved data communication interface, can connect with class network management responder, access to network management system.
Return emission can select burst mode to sharply decrease the noise convergence and reduce the forepart receiver number.
Technique Parameters
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Item |
Unit |
Technical Parameters |
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Forward optical receiving part |
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Optical Parameters |
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Receiving Optical Power |
dBm |
-9 ~ +2 |
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Optical Return Loss |
dB |
>45 |
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Optical Receiving Wavelength |
nm |
1100 ~ 1600 |
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Optical Connector Type |
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FC/APC, SC/APC or specified by the user |
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Fiber Type |
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Single Mode |
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Link Performance |
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C/N |
dB |
≥ 51(-2dBm input) |
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C/CTB |
dB |
≥ 65 |
Output Level 108 dBμV Balanced 6dB |
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C/CSO |
dB |
≥ 60 |
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RF Parameters |
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Frequency Range |
MHz |
45 ~862 |
45 ~1003 |
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Flatness in Band |
dB |
±0.75 |
±0.75 |
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Rated Output Level |
dBμV |
≥ 108 |
≥ 108 |
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Max Output Level |
dBμV |
≥ 114 |
≥ 112 |
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Output Return Loss |
dB |
(45 ~550MHz)≥16/(550~1000MHz)≥14 |
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Output Impedance |
Ω |
75 |
75 |
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Electronic Control EQ Range |
dB |
0~10 |
0~10 |
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Electronic Control ATT Range |
dBμV |
0~20 |
0~20 |
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Return Optical Emission Part |
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Optical Parameters |
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Optical Transmit Wavelength |
nm |
1310±10, 1550±10 or specified by the user |
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Output Optical Power |
mW |
0.5, 1, 2 |
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Optical Connector Type |
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FC/APC, SC/APC or specified by the user |
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RF Parameters |
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Frequency Range |
MHz |
5 ~ 65(or specified by the user) |
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Flatness in Band |
dB |
±1 |
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Input Level |
dBμV |
72 ~ 85 |
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Output Impedance |
Ω |
75 |
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NPR dynamic range |
dB |
≥15(NPR≥30 dB) Use DFB laser |
≥10(NPR≥30 dB) Use FP laser |
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General Performance |
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Supply Voltage |
V |
A:AC(150~265)V;B:AC(35~90)V |
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Operating Temperature |
ºC |
-40~60 |
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Storage Temperature |
ºC |
-40~65 |
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Relative Humidity |
% |
Max 95% no condensation |
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Consumption |
VA |
≤ 30 |
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Dimension |
mm |
260(L)x 200(W)x 130(H) |
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Note: The forward RF parameters are tested under the condition of using GaAs 25dB power doubly module in the last stage. Use other module, the parameters will be slightly different.
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Burst Mode (Select this mode, see below) |
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Output Optical Power (Close the burst mode) |
dBm |
-30 |
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Laser Turn On Threshold |
dBμV |
≥70 |
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Laser Turn Off Threshold |
dBμV |
≤62 |
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Laser Turn On Time (t1) |
us |
0.5≤ t1 ≤1 |
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Laser Turn Off Time (t2) |
us |
0.5≤ t2 ≤1.5 |
Suppliers with verified business licenses
Audited Supplier 
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