MAINTENANCE MANUAL
IFR 4000
2-2-3
Page 37
Aug 1/04
(17) AM Meter
TEST EQUIPMENT:
RF Signal Generator
MeasuringReceiver
Power
Sensor
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 Power Sensor to the RF Signal Generator (Output).
2. Set the RF Generator Frequency to 400 MHz.
3. Set the RF Generator Level and AM Depth as follows and record the AM
readings:
LEVEL
AM DEPTH
AM READINGS
-20 dBm
10%
Record as X1
-20 dBm
50%
Record as X2
-20 dBm
90%
Record as X3
-10 dBm
10%
Record as X4
-10 dBm
50%
Record as X5
-10 dBm
90%
Record as X6
5 dBm
10%
Record as X7
5 dBm
50%
Record as X8
5 dBm
90%
Record as X9
4. Press the SETUP Key to display the Setup Menu.
5. Set the PORT Field to
ANT
.
6. Press the MODE Select Key until the COMM UHF Mode Screen is displayed.
7. If the COMM UHF Mode Screen is in GENERATING Mode, press the SWITCH
GEN/RX Soft Key to switch the COMM UHF Mode Screen to RECEIVING Mode.
8. Disconnect the Power Sensor from the RF Signal Generator and connect the RF
Signal Generator (Output) to the ANT Connector.
9. Set the RF Generator Level and AM Depth as follows and verify the AM
readings:
LEVEL
AM DEPTH
AM READINGS
-20 dBm
10%
(X1
÷
1.1) < Reading < (X1
÷
0.9)
-20 dBm
50%
(X2
÷
1.1) < Reading < (X2
÷
0.9)
-20 dBm
90%
(X3
÷
1.1) < Reading < (X3
÷
0.9)
-10 dBm
10%
(X4
÷
1.1) < Reading < (X4
÷
0.9)
-10 dBm
50%
(X5
÷
1.1) < Reading < (X5
÷
0.9)
-10 dBm
90%
(X6
÷
1.1) < Reading < (X6
÷
0.9)
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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