TB 9-6625-2343-40
(52) Reconnect calibrator to AM/FM test source AUDIO INPUT.
(53) Subtract one-half of the value recorded in step (51) above from the TI displayed
value. If the result is not ≤ 20 Hz pk, perform b below.
(54) Press TI MEASUREMENT ΦM key.
(55) Disconnect calibrator from AM/FM test source AUDIO INPUT.
(56) Record the residual ΦM displayed on TI.
(57) Reconnect calibrator to AM/FM test source AUDIO INPUT.
(58) Subtract one-half of the value recorded in step (56) above from the TI displayed
value. If the result is not ≤ 0.030 rad pk, perform b below.
(59) Press TI keys as listed in (a) and (b) below:
(a) BLUE.
(b) INSTR PRESET.
(60) Reduce all outputs to minimum and disconnect equipment setup.
b. Adjustments
(1) Disconnect equipment setup.
(2) Press TI keys as listed in (a) through (f) below:
(a) BLUE.
(b) INSTR PRESET.
(c) MEASUREMENT AM.
(d) DETECTOR AVG.
(e) DISPLAY RATIO.
(f) LP FILTER >20 kHz.
(3) Connect TI sensor module to signal generator No. 1 RF OUTPUT.
percent AM at a 1 kHz rate.
(5) Adjust A2R44 >20kHz LPF GAIN (fig. 2) for a display of 99.95 to 100.05 percent (R).
(6) Press TI LP FILTER 15 kHz key.
(7) Adjust A2R40 15kHz LPF GAIN (fig. 2) for a display of 99.95 to 100.05 percent (R).
(8) Disconnect TI sensor module from signal generator No. 1 RF OUTPUT.
(9) Connect TI sensor module to TI CALIBRATION RF POWER OUTPUT.
(10) Press TI keys as listed in (a) through (d) below:
(a) BLUE.
(b) INSTR PRESET.
(c) 45.16, SPCL.
(d) 49. (YELLOW) 1, SPCL.
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