TB 9-6625-2343-40
(29) Move TI sensor module from AM/FM test source FM/4 OUTPUT to FM OUTPUT.
(30) Press TI keys as listed in (a) through (e) below:
(a)
AUTOMATIC OPERATION.
MEASUREMENT ΦM.
(b)
(c)
DETECTOR PEAK+.
(d)
HP FILTER 300 Hz.
(e)
LP FILTER 15 kHz.
(31) Set audio analyzer for an output of 1 kHz source frequency, 1 mV level step, 600 Ω
output impedance, 4.38 V output level, and activate HP filter.
(32) Disconnect calibrator from AM/FM test source.
(33) Connect audio analyzer OUTPUT HIGH to AM/FM test source AUDIO INPUT.
(34) Adjust audio analyzer source level for a TI indication of 400 rad.
(35) Enable audio analyzer special function 15, and then activate distortion function.
(36) If audio analyzer indication is not ≤ 0.1%, perform b below.
(37) Set audio analyzer for an output level of 440 mV and 1 mV level steps.
(38) Adjust audio analyzer source level for a TI indication of 40 rad.
(39) Press TI keys as listed in (a) through (c) below:
(a) DATA 3.1.
(b) DATA SPCL.
(c) MEASUREMENT ΦM.
(40) Enable audio analyzer special function 15, and then activate distortion function.
(41) If audio analyzer indication is not ≤ 0.1%, perform b below.
(42) Reduce all outputs to minimum and disconnect equipment setup.
b. Adjustments
(1) Disconnect equipment setup.
(2) Connect AM/FM test source FM/4 OUTPUT to TI sensor module.
(3) Connect calibrator WIDEBAND OUTPUT to AM/FM test source AUDIO INPUT.
(4) Set calibrator for a wideband output frequency of 1 kHz at a level of 500 mV.
(5) Press TI keys as listed in (a) through (c) below:
(a) INSTR PRESET.
(b) HP FILTER 300 Hz.
(c) LP FILTER 3 kHz.
(6) Adjust AM/FM test source CARRIER FREQUENCY TUNE control for a TI
indication of approximately 100 MHz.
(7) Press TI keys as listed in (a) and (b) below:
(a) DATA MHz.
(b) MEASUREMENT FM.
(8) Adjust calibrator level for a TI indication of 100 kHz.
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