IFR NAVAIR NAV-750

NAVAIR 17—2OAX—737
4.15 RESIDUAL FM TESTS
4.15.1 Set the TI controls as follows:
FREQUENCY MHz switches to
Output attenuator control to
MASTER MOD control to
1020 Hz indent tone MOD control to
9960 Hz FM tone MOD control to
30 Hz tone MOD control to
118.000
-120 dBm
UNCAL [fully ccw (0)]
UNCAL [fully ccw (0)]
UNCAL [fully ccw (0)]
UNCAL [fully ccw (0)]
4.15.2 Connect the signal generator calibratorsensor module input to the TI RFpower outputconnector.
4.15.3 Set the TI Output Attenuator control to —10 dBm.
4.15.4 Press the signal generator calibratorINSTR PRESET key (Blue key, AUTOMATIC OPERATION
key), and ensure that the signal generator calibrator is in the FREQ measurement mode and tunes to the TI
FREQUENCY MHz switches setting. Setthe signal generator calibrator for FM modulation measurements
with the DETECTOR set to PEAK ±12. Activate the signal generator calibrator >20 kHz LP FILTER.
4.15.5 Verify that the signal generator calibrator indicates <200 Hz FM deviation.
4.15.6 Set the TI FREQUENCY MHz switches to 332.000 MHz.
4.15.7 Verify that the signal generator calibrator indicates <400 Hz FM deviation.
4.15.8 If no other measurements are to be performed,turn all equipment to OFF or STANDBY and
disconnect the equipment from the TI.
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