Optical Receiver Optical Control AGC Two-way Output Cable TV Fiber Optical Transmission Equipment Constant Output CATV
Description
Product Features
The lowest received optical power is -18dbm! ! Output level are all greater than 100dbuv!
OR303 optically controlled AGC optical receiver is a field rain-proof two-channel output receiver, which is suitable for the fiber user access terminal of FTTB (Fiber to Building) network, and can realize analog or digital signals entering the home. It can be used with ONU or EOC to realize triple play.
Pay attention to reliability and convenience, the optical input is+2 ~-8 DBM, and the output signal does not change, which brings convenience for users to debug; AGC+ Network Management Type (303-N), which pays attention to debugging convenience and remote monitoring, can realize remote monitoring.
- High quality waterproof cast aluminum shell, waterproof level reaches IP65 standard
- The equipment can be hung by steel strand or wall.
- Beautiful and generous double shielding panel ensures good EMC index
- Pre GaAs low-noise amplifier circuit increases the receiving sensitivity of the device.
- The AGC control range is + 2 ～ - 8dbm, and the output is basically unchanged
- Accurate optical power detection circuit, accurate real-time display through LED indicator.
- With guide slot type output port plug-in, you can switch branches or distribute output at will
- AC-60v products have independent power supply ports.
- Button fuse box with convenient and quick change inside.
- T-type + E-type anti surge and lightning circuit is adopted to effectively prevent power damage.
- Universal SNMP network management protocol.
|
| Technical parameter | ||
| model | OR300 | OR301 | OR303 |
| bandwidth | 47-1002MHz/47-1218MHz | ||
| Receiving wavelength | 1290-1600nm | ||
| Input optical power range | -7dB~ +2dBm | -15dB~ +2dBm | -18dB~ +2dBm |
| AgcOptical control range | No, | -10~0dBm | -15~0dBm |
| Output level | 102dBuV | 106dBuV | 100dBuV |
| Optical fiber connector | FC/APC or SC/APC | ||
| Reflection loss | ≥45 dB | ||
| In band flatness | ±0.75dB | ||
| gain adjustment | 0-20 dB | ||
| reflection loss | ≥14dB | ||
| CNR | ≥51dB | ||
| MER(dB) (Light range) | >36 | >36 | >36 |
| >28 | >30 | >30 | |
| BER(dB) (Light range) | <1.0E-9 | <1.0E-9 | <1.0E-9 |
| <1.0E-9 | <1.0E-9 | <1.0E-9 | |
| CTB | ≥65dB(note2) | ||
| CSO | ≥60dB(note2) | ||
| Radio frequency output impedance | 75Ω | ||
| Working power supply voltage | 36-65Vac/220±10%Vac(SMPS);
| ||
| working temperature | -25~+55℃ | ||
| size | 198mm´108mm´98mm | ||
■ Preparation steps:
① Peel the outer plastic skin of the optical cable for 30cm to expose the steel wire and optical fiber. Keep 2 steel wires and cut them to 5cm long.
② Weld the tail fiber with FC/APC connector about 50cm at the end of the optical fiber.
③ Measure the input optical power of light reception with an optical power meter, which should be between-8 and+3dbm. The value of the received optical power is -2~0dBm.
■ Installation steps:
① Open the upper cover of the optical receiver housing and unscrew (waterproof joint and waterproof rubber sleeve).
② Thread the optical cable with FC / APC connector into the optical receiver through (waterproof joint and waterproof rubber sleeve) in turn, fasten two steel wires on the terminal posts respectively, and screw the waterproof joint.
③ Properly coil the forward pigtail in the optical fiber box, then insert the FC / APC connector into the flange plate, and tighten the bolts on the connector clockwise (the tighter the better, the better to adapt to the maximum power of light reception).
④ 220 v optical receiver: plug the power cord into the 220V power socket after confirming that the shell is well grounded.60V optical receiver: according to the actual situation of power supply of the system, properly set the feeding plug-in to realize power supply of different ports. (Note: 60V power supply input can be connected to output 2 during commissioning so that output port 1 is connected to the instrument.)After the power is turned on, the red power indicator in the machine should light up, indicating that the power is working normally.
⑤ Optical power display: after the power supply and optical cable are correctly connected, the optical power indicator shall work normally. According to the actual input light power, the status LED (light emitting diode) indicator light in different gears will be on. If the optical power is too low or too high, adjust the tightness of the APC connector or the output optical power of the front end to make it reach the normal range.
⑥ Connect the test terminal of the field intensity meter or spectrometer to the output port 1 of the optical receiver. If the output level is too high, it can be attenuated to the design value by adjusting the attenuator. (It is recommended that the main output port is about 102dBμv)
⑦ Connect the field strength meter to each output port and measure the level value of each port.
⑧ Connect the output port of the optical receiver with the corresponding transmission cable, and connect 75? 6? 8. Install the matching load to the idle output port, otherwise the signal quality will be affected due to mismatch.
■ End of commissioning
Tighten the bolts on the housing and ensure that the optical receiver is firmly installed.
matters needing attention
■ The equipment enclosure shall be well grounded to prevent damage to the optical receiver caused by lightning strike or personal injury caused by accident.
■ Static electricity can cause permanent damage to the laser device. Avoid damage to the laser and light receiving module caused by static electricity during installation and use.
■ It is forbidden to face the optical fiber outlet, so as to avoid permanent damage to the eyes caused by invisible laser beam.
■ It is prohibited to wipe the optical fiber connector and optical fiber connector with hands or other improper objects.
■ Ensure that the input optical power of the optical receiving module is before -8~+3dBm, and the recommended value is -2dBm. (Note: If it is larger than +3dBm, it will cause the light receiving module to burn out permanently)
Judgment and elimination of common faults
| Fault phenomenon | Cause of failure | Troubleshooting |
| Forward channel output level is too low. | Input optical power is too low: the optical fiber connector is polluted: + 24V voltage is too low: the output test terminal is in poor contact
| Test the input optical power, improve the level of the input forward optical transmitter on the premise of ensuring the indicators: wash the optical fiber connector: measure the module voltage |
| The received TV image has snowflakes, but the output level is normal | The input and output RF level of the forward optical transmitter is too low or the signal quality is not good. | Increase the level of input forward optical transmitter: improve the signal quality. |
| Receive TV image with twill | The RF level output from the forward optical transmitter is too high or the signal quality is poor | Lowering the input forward optical transmitter level: improving signal quality |
| No output signal of forward channel | Power supply does not work: the optical receiver has no optical signal input or the forward optical transmitter has no RF signal input. | Check whether each plug-in point of the power supply is in poor contact: measure the optical power input to the optical connector. |
Package Included
1pcs
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