Cisco GS7000 - Page 163

No RF Output: Fiber Optic Light Level is Good, Receiver Optical Power LED is on
143
Notes
These notes apply to the previous troubleshooting flowchart.
Note
Description
For standard receiver
For low input receiver
1
If the green LED is Off, it is outside
optical input range. Green (On)
indicates that light is present and the
optical input value is higher than -10
dBm.
If the green LED is Off, it is outside
optical input range. Green (On)
indicates that light is present and the
optical input value is higher than -14
dBm.
2
The recommended RF output level at
the output of the receiver module is 27
dBmV (+7.0 dBmV as measured at the
-20 dB RF test point). This setup is
recommended to achieve the best
possible performance.
The recommended RF output level at
the output of the receiver module is 27
dBmV (+7.0 dBmV as measured at the
-20 dB RF test point). This setup is
recommended to achieve the best
possible performance with 8 dB
setting.
Note:
- Assumes 2.5% OMI/CH or 20% composite.
- Assumes 1310 nm wavelength / Add one dB for 1550
- Assumes 0dB attenuator switch setting unless noted, if otherwise subtract attenuator
value from reading
- Assumes -4dB optical input, if otherwise add or subtract 2dB RF for each 1dB optical
input