Cisco Cisco 1 GHz GainStar Amplifier Installation Guide
4034994 Rev B Troubleshooting 4-3
No Forward RF Signal
The forward RF signal can be measured at the amplifier module forward input and
at the forward output main1 and forward output main2 test points.
at the forward output main1 and forward output main2 test points.
No Forward RF Signal Troubleshooting Table
Before you begin troubleshooting for no forward RF signal, verify that the amplifier
is receiving the proper forward RF input signal from the upstream amplifier.
is receiving the proper forward RF input signal from the upstream amplifier.
Possible Cause
Solution
No forward RF signal at the forward
input test point.
input test point.
Verify the connection of the RF Cable
Connector.
Verify that the amplifier is receiving the
proper forward RF input signal from the
upstream amplifier.
Important: You cannot balance the
amplifier without the proper forward RF
input signal.
Connector.
Verify that the amplifier is receiving the
proper forward RF input signal from the
upstream amplifier.
Important: You cannot balance the
amplifier without the proper forward RF
input signal.
There is forward RF signal at the forward
input test point, but no signal at one or all
of the forward output test points.
input test point, but no signal at one or all
of the forward output test points.
RF input signal.
Verify that all the proper accessories,
pads, EQs, and signal directors (if
applicable) are firmly installed in the
correct locations. Verify that the
accessories are firmly installed in the
correct locations.
Replace the RF module.
Verify that all the proper accessories,
pads, EQs, and signal directors (if
applicable) are firmly installed in the
correct locations. Verify that the
accessories are firmly installed in the
correct locations.
Replace the RF module.