TB 9-6625-2343-50
(2) Set AM/FM test source TEST MODE switch to FM.
(3) Connect equipment as shown in figure 13.
CALIBRATOR
AM/FM
TEST INSTRUMENT
TEST
TEST SOURCE
CABLE AND TERMINATION SUPPLIED
WITH WIDEBAND OPTION
AUDIO INPUT
AM FM/4
SIGNAL GENERATOR NO. 3
OUTPUT
(4) Set calibrator for a wideband output frequency of 200 Hz at a level of 178.5 mV.
(5) Press TI keys as listed in (a) and (b) below:
(a) MEASUREMENT FREQ.
(b) TRACK MODE.
(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) through (d) below:
(a)
TRACK MODE (off).
(b)
DATA MHz.
(c)
MEASUREMENT FM.
(d)
DETECTOR AVG.
(8) Adjust calibrator level for a TI indication of 25 kHz.
(9) Press calibrator NEW REF key.
(10) Press TI keys as listed in (a) through (e) below:
(a)
DISPLAY RATIO (off).
(b)
HP FILTERS (all off).
(c)
LP FILTERS (all off).
(d)
DISPLAY RATIO (on).
(e)
HP FILTER 50 Hz (on).
(11) TI will indicate within limits specified in first row of table 11.
(12) Change calibrator output frequency to 2 kHz.
(13) Repeat technique of steps (10) and (12) above using filters and calibrator output
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