Cisco Cisco 1 GHz GainMaker Amplifier インストールガイド
Chapter 4 Troubleshooting
92
No Reverse RF Signal
The reverse RF signal can be measured at the line extender module reverse input
and reverse output test points.
and reverse output test points.
No Reverse RF Signal Troubleshooting Table
Before you begin troubleshooting for no reverse RF signal, verify that the line
extender is receiving the proper reverse RF input signals from the downstream line
extender at the line extender reverse input test point.
extender is receiving the proper reverse RF input signals from the downstream line
extender at the line extender reverse input test point.
Important: You cannot balance the line extender without the proper reverse RF
input signals.
input signals.
Possible cause
Solution
No reverse RF signal at the reverse
input test point.
input test point.
Verify that the line extender is receiving the
proper reverse RF input signals from the
downstream line extender.
Important: You cannot balance the line
extender without the proper reverse RF input
signals.
proper reverse RF input signals from the
downstream line extender.
Important: You cannot balance the line
extender without the proper reverse RF input
signals.
There is a proper reverse RF signal at
the reverse input test point, but no
signal at the reverse output test
point.
the reverse input test point, but no
signal at the reverse output test
point.
Verify that the line extender module is
receiving the proper AC and DC voltages.
Refer to No AC Power (on page 85) and No DC
Power (on page 87).
receiving the proper AC and DC voltages.
Refer to No AC Power (on page 85) and No DC
Power (on page 87).
Verify that the line extender module is
receiving the proper forward RF signal. Refer
to No Forward RF Signal (on page 89).
receiving the proper forward RF signal. Refer
to No Forward RF Signal (on page 89).
Verify that all the proper accessories, pads, and
EQs are firmly installed in the correct locations.
EQs are firmly installed in the correct locations.
Verify that the factory installed accessories are
firmly installed in the correct locations.
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
removing the line extender module cover.
Reinstall the line extender module cover
properly or RF signal degradation may result.
its jumpers are properly and firmly installed.
Note: Verifying factory installations involves
removing the line extender module cover.
Reinstall the line extender module cover
properly or RF signal degradation may result.
Replace the line extender module.