Cisco GS7000 Installation And Operation Manual page 161

No RF Output at Receiver RF Test Point: Optical Power LED on Receiver Module is off
Notes
These notes apply to the previous troubleshooting flowchart.
Note Description
For standard receiver
1 This unit will have no RF output.
2 The receiver will not function below
this DC level which is equal to 10
dBm.

The optimum light level input is -6
to 2 dBm.

For every 1 dBm change in optical
input power, the RF output will
change by 2 dB.

Excessively high light input levels
(> +2 dBm) will cause distortions
and/or damage the photo diode.
For low input receiver
This unit will have no RF output.
The receiver will not function below
this DC level which is equal to 10
dBm.

The optimum light level input is
-10 to -2 dBm.

For every 1 dBm change in optical
input power, the RF output will
change by 2 dB.

Excessively high light input levels
(> -2 dBm) will cause distortions
and/or damage the photo diode.
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