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Step 4. Connect power sensor to MS462XC Port 1 and select START
VERIFICATION softkey.
Step 5. Verify that Source 1 passes this test.
Step 6. Press the SELECT SOURCE soft key to select 2
Step 7. Connect power sensor to MS462XC Port 3 and select START
VERIFICATION soft key.
Step 8. Verify that Source 2 passes this test.
Step 9. Select the menu soft key as follows to exit the TROUBLE-
SHOOTING mode:
RETURN
RETURN
FINISHED, RECOVER FROM TROUBLESHOOTINGT
Step 10. Reconnect cables between MS462XC Port 1 and Port 1of
MS4782 Test Set and between Port 3 of MS462XC and Port 3
of MS4782 Test Set.
6-5 RETURN LOSS
CONFIDENCE
TEST
This test verifies the accuracy of return loss measurements.
Setup Turn on the MS462XC VNMS and MS4782X Test Set and allow them to
warm up for 30 minutes.
Step 1. Press Default key then 0 key.
Step 2. Press Seq key and .select:
TTL I/O.
PARALLEL OUT SETUP
SET PARALLEL OUT PORT (0-255)
Step 3. Change the value from 0 to 8.
Step 4. Select:
PERFORMANCE VERIFICATION RETURN LOSS CONFIDENCE TEST
ME7840A OMM 6-3
CAUTION
The TROUBLESHOOTING function must be properly exited to restore
normal
NOTE
The worst case test result
will be displayed on the
screen when the instru
-
ment fails this test only.
The failed test resultis also
recorded in theService
Log.