1. Summarize
GJY862H2J/F-F is a new generation of optical receiver, adopt gallium arsenide amplifier module, achieves high targets RF output. Display each parameter by nixietube ,adjust output level¡¢equilibrium quantity by using key-stocks ,convenient to use.
2. Product Features
- With optical AGC function, output level is no change under different optical power (-7- +1dBm).
- Digital display forward receive optical power, voltage, etc. else parameters, accurate and intuitive.
- Adjust output level, equalization by press-key only
- Frequency bandwidth 47-862MHz.
- One-way receiving, 2 distribution or branch output.
- Forward RF single -20dB test port.
- Adopts AC60V centralized power supply or AC220V power supply.
3. Block diagram and panel
Pic.1 block diagram
Pic.2 optical receiver panel
GJY862H2J–F optical receiver adopts AC60V centralized power supply, GJY862H2J/F-F adopts AC220V decentralized power supply.
Under distribution output, PORT1 and PORT2 is RF output port.
Under branch output, PORT2 is the main output port, PORT1 is branch output port.
PORT1 FUSE is fuse socket of PORT1.
PORT2 FUSE is fuse socket of PORT2.
The gap on the left side of panel is used to input fiber, the gap below is used to input type-2 network management wire, let it be as short as possible when install network management wire, in order to avoid impacting other parts of complete appliance normal working.
4. Specifications:
Item |
Unit |
Performance parameter |
Remarks |
Down-link optical receive performance parameter |
Receiving optical wavelength |
nm |
1290¡«1580 |
|
Receiving optical power range |
dBm |
-7¡«£«1 |
|
Frequency range |
MHz |
47¡«862 |
|
Optical link frequency response |
dB |
±1 |
|
Return loss |
dB |
≥14 |
|
Test port level |
dB |
£20(±2) |
Compare to output port |
Output level |
dBμV |
≥110(branch output) |
Connect with GFS1310F-B optical transmitter, -1dBm optical receiving, 59-way PAL-D single input, 10dB equalizer. |
≥106(distribution output) |
Optical link C/N |
dB |
≥51 |
Optical link C/CSO |
dB |
≥63 |
Optical link C/CTB |
dB |
≥65 |
Optical AGC range |
dBm |
-7¡«£«1 |
|
Other parameters |
Fiber connection type |
|
SC/APC |
Or FC/APC |
Power supply voltage |
V |
AC60(GJY862H2J-F) |
Or AC220 (GJY862H2F-F) |
5. Display and Press-key control
GJY862H2J/F-F optical receiver display and control each parameter via digital display module, display module shown as below:
The table listed each “mark” and corresponding display content as below:
Mark |
Display content |
Unit |
Adjustable |
Remarks |
1 |
Forward optical power |
dBm |
NO |
Low optical power display Lo |
2 |
+5V voltage |
V |
NO |
|
3 |
+24V voltage |
V |
NO |
|
4 |
Output level adjust |
dB |
YES |
Adjust range -3dB¡«+3dB |
E |
Equalizer value |
dB |
YES |
Adjust range 0¡«15dB |
Now explain digital LED reading way, for example as below, “1” will twinkle constantly, it mean “mark”, the next "-1.9" display current forward optical power.
|
