Cisco Cisco 1 GHz GainMaker Amplifier Guía De Instalación
Chapter 4 Troubleshooting
No Reverse RF Signal
The reverse RF signal can be measured at the amplifier module Main, Aux 1, and Aux
2 reverse input and reverse output test points.
No Reverse RF Signal Troubleshooting Table
Before you begin troubleshooting for no reverse RF signal, verify that the amplifier is
receiving the proper reverse RF input signals from the downstream amplifiers at the
amplifier Main, Aux 1, and Aux 2 reverse input test points.
Important: You cannot balance the amplifier without the proper reverse RF input
Important: You cannot balance the amplifier without the proper reverse RF input
signals.
Possible cause
Solution
No reverse RF signal at the reverse
input test point(s).
Verify that the amplifier is receiving the proper
reverse RF input signals from the downstream
amplifiers.
Important: You cannot balance the amplifier
Important: You cannot balance the amplifier
without the proper reverse RF input signals.
There are proper reverse RF signals
at the Main, Aux 1, and Aux 2
reverse input test points, but no
signal at the reverse output test
point.
Verify that the amplifier module is receiving
the proper AC and DC voltages. Refer to No AC
Power (on page 81) and No DC Power (on page
Verify that the amplifier module is receiving
the proper forward RF signal. Refer to No
Forward RF Signal (on page 85).
Verify that all the proper accessories, pads, and
EQs are firmly installed in the correct locations.
Verify that the factory installed accessories are
firmly installed in the correct locations.
Verify that the reverse switch (if applicable) or
its jumpers are properly and firmly installed.
Note: Verifying factory installations involves
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.
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