5.9.5.6.1 How To Verify UHF Duplexer Insertion Loss
5.9.5.6.1 How To Verify UHF Duplexer Insertion Loss
Procedure Steps
1
Connect test equipment as shown in
2
Observe and note the level in dBm as shown on the millivoltmeter.
3
Connect the duplexer cable assembly and test equipment to the duplexer as shown in
.
4
Observe and note the level in dBm as shown on the millivoltmeter.
5
Subtract the absolute number noted in step 2 from the number noted in step 4. The difference should be less
than 1.3 dB to meet specification for Insertion Loss.
6
Repeat steps 1 through 5 for Low-Pass/High-Notch cavities with the following exceptions:
a. Set service monitor to Rx or Tx frequency, whichever is
LOWER
b. Connect millivoltmeter to Low Pass duplexer input (cavity #1)
c. Connect terminator to cavity #6.
5.9.5.7 Verifying UHF Duplexer Isolation
Figure 5-19
Verifying UHF Duplexer Isolation — Connecting Test Equipment
6871022P86-A - November 2012
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Summary of Contents for GTR 8000
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