• Adopt US E-O high-performance optical receiver module, field water-repellent shell.
• Adopt Philips low-noise microwave tube pre-amplifier circuit and power doubler (or push-pull) output module.
• Built-in continuous adjustable equalizer and attenuator, plug-pull output brancher component, 8-class optical power display.
• Strict anti-thunder system, and high-reliability switch power.
• Suitable for middle or small CATV network.
Special elucidation: Equipments technique parameter the manual given is according to the test method of GY/T143-2000 CATV system amplitude modulation laser transmitter and receiver enter the net technique condition and measure method, and gained under its prescriptive test condition. Test condition: Test link path is formed of standard fiber and standard optical receiver. Under the condition of prescriptive link loss, set 59 PAL-D imitate TV channels signal at 550MHz, transmit digital modulated signal at the range of 550MHz-750(862) MHz, level of digital modulated signal (8MHz band width) is lower 10dB than of imitate signal carrier wave, when optical receiver input optical power being -1dBm, measure C/ CTB, C/ CSO, C/ N.
| 1. Output 2 | 2. Forward output -30dB test port |
| 3. Output 1 | 4. Branch (distribute) output plug-in |
| 5. AC60V power over-current protection | 6. Duplex filter |
| 7. Reverse attenuator | 8. Inner power outlet |
| 9. Power LED | 10. Reverse RF amplifier module |
| 11. Reverse return optical transmitter component | 12. Forward equalizer |
| 13. Reverse attenuator | 14. Reverse RF amplifier module |
| 15. Reverse -30dB test port | 16. Forward optical receiver component |
| 17. Optical power LED (8 class) | 18. Fiber cable in |
| 19. AC60V power in |
| Specifications: | ||
|---|---|---|
| Forward Optical Parameter | ||
| Input Optical Power | dBm | -7 ~ +3 |
| Suggested work range | dBm | -3 ~ +1 |
| Optical Return Loss | dB | >45 |
| Optical Fiber Connector | SC/APC | |
| Operating Fiber Type | Single Mode | |
| C/N | dB | ≥51 |
| C/CTB | dB | ≥65 |
| C/CSO | dB | ≥60 |
| Frequency Range | MHz | 45~862 |
| Flatness in Band | dB | ±0.5(45~550MHz), ±0.75(550~750MHz) |
| Suggested Output Level | dBµV | ≥100 (Input 0dB) |
| Return Loss | dB | ≥16(45~550MHz), ≥14(550~750MHz) |
| Output Impedance | Ω | 75 |
| Reverse Transmission Function Parameter | ||
| Wavelength | nm | 1310±10 |
| Output Optical Power | dBm | 1 ~ 5 |
| RF Frequency Band | MHz | 5 ~ 65 |
| Flatness | dB | ±1 |
| RF Input Level | dBµV | 90~95 |
| Optical Fiber Connector | SC/APC | |
| Output Impedance | Ω | 75 |
| General | ||
| Power Voltage (50Hz) | V | A: (130~265)V B: (30-90)V |
| Power Consumption | VA | 20 |
| Dimension | mm | 300x195x130 |