Cisco Cisco 1 GHz GainMaker Amplifier Guía De Instalación
Low or Degraded Reverse RF Signal
Low or Degraded 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.
Low or Degraded Reverse RF Signal Troubleshooting Table
Before you begin troubleshooting for a low or degraded reverse RF signal, verify that
the amplifier is receiving the proper reverse RF input signals from the downstream
amplifiers at the amplifier module 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.
Make sure you have configured the amplifier module according to the specifications
Make sure you have configured the amplifier module according to the specifications
in the design print, and that the amplifier has warmed up for approximately one
hour.
Make sure you are using the proper total tilt reference when setting receive levels.
Make sure you are using the proper total tilt reference when setting receive levels.
Refer to the reverse equalizer charts in Technical Information (on page 93) for more
information.
Important: If the amplifier cover was ever removed, make sure it was properly
Important: If the amplifier cover was ever removed, make sure it was properly
reinstalled. Improperly reinstalling the amplifier module cover may result in RF
signal degradation.
Possible cause
Solution
Low or degraded 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.
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