MAINTENANCE MANUAL
IFR 4000
2-2-3
Page 17
Aug 1/04
(7) Harmonic and Spurious
TEST EQUIPMENT:
Spectrum
Analyzer
VERIFICATION FAILURE:
If any step in this procedure fails or is out of tolerance,
this indicates a failure in the Test Set. Refer to
Troubleshooting for corrective action.
STEP PROCEDURE
1. Connect the Spectrum Analyzer (Input) to the ANT Connector.
2. Press the SETUP Key to display the Setup Menu.
3. Set the PORT Field to
ANT
.
4. Press the MODE Select Key until the VOR Mode Screen is displayed.
5. Set the Test Set as follows:
FIELD
SETTING
FREQ
108.000 MHz
RF LVL
0.0 dBm
MOD TONE
OFF
M MOD
0%
6. Verify the harmonic is <-20 dBc and the spurious is <-35 dBc.
7. Press the MODE Select Key until the GLIDESLOPE Mode Screen is displayed.
8. Set the Test Set as follows:
FIELD
SETTING
FREQ
334.700 MHz
RF LVL
0.0 dBm
M MOD
0%
9. Verify the harmonic is <-20 dBc and the spurious is <-35 dBc.
10. Press the MODE Select Key until the MARKER BEACON Mode Screen is
displayed.
11. Set the Test Set as follows:
FIELD
SETTING
FREQ
75.000 MHz
RF LVL
0.0 dBm
MOD TONE
OFF
M MOD
0%
12. Verify the harmonic is <-20 dBc and the spurious is <-35 dBc.
13. Press the MODE Select Key until the COMM VHF AM Mode Screen is displayed.
14. Set the Test Set as follows:
FIELD
SETTING
FREQ
137.000 MHz
RF LVL
0.0 dBm
MOD TONE
OFF
M MOD
0%
Summary of Contents for IFR 4000
Page 1: ...NAV COMM Test Set Maintenance Manual 1002 5600 4P0 IFR 4000...
Page 3: ...MAINTENANCE MANUAL IFR 4000 FOR QUALIFIED SERVICE PERSONNEL ONLY...
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