Cisco Cisco 1 GHz GainMaker Amplifier インストールガイド
No Forward RF Signal
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No Forward RF Signal
The forward RF signal can be measured at the amplifier module forward input and at
the Main, Aux 1, and Aux 2 forward output test points.
the Main, Aux 1, and Aux 2 forward output 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.
receiving the proper forward RF input signal from the upstream amplifier.
Important: You cannot balance the amplifier without the proper forward RF input
signal.
signal.
Possible cause
Solution
No forward RF signal at the forward
input test point.
input test point.
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.
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.
forward input test point, but no
signal at one or all of the forward
output test points.
Verify that the amplifier module is receiving
the proper AC and DC voltages. Refer to No AC
Power (on page 77) and No DC Power (on page
79).
the proper AC and DC voltages. Refer to No AC
Power (on page 77) and No DC Power (on page
79).
Verify that all the proper accessories, pads,
EQs, and signal directors (if applicable) are
firmly installed in the correct locations.
EQs, and signal directors (if applicable) are
firmly installed in the correct locations.
Verify that the factory installed accessories are
firmly installed in the correct locations.
Note: Verifying factory installations involves
removing the amplifier module cover. Reinstall
the amplifier module cover properly or RF
signal degradation may result.
firmly installed in the correct locations.
Note: Verifying factory installations involves
removing the amplifier module cover. Reinstall
the amplifier module cover properly or RF
signal degradation may result.
Replace the amplifier module.