Cisco Model GS7000 4-Port Node 1 GHz with 55 70 Split Guide De Montage
No RF Output at Receiver RF Test Point: Optical Power LED on Receiver Module is off
141
Notes
These notes apply to the previous troubleshooting flowchart.
Note
Description
For standard receiver
For low input receiver
1
This unit will have no RF output.
This unit will have no RF output.
2
The receiver will not function below
this DC level which is equal to
this DC level which is equal to
10
dBm.
The optimum light level input is -6
to 2 dBm.
to 2 dBm.
For every 1 dBm change in optical
input power, the RF output will
change by 2 dB.
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.
(> +2 dBm) will cause distortions
and/or damage the photo diode.
The receiver will not function below
this DC level which is equal to
this DC level which is equal to
10
dBm.
The optimum light level input is
-10 to -2 dBm.
-10 to -2 dBm.
For every 1 dBm change in optical
input power, the RF output will
change by 2 dB.
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.
(> -2 dBm) will cause distortions
and/or damage the photo diode.