TB 9-6625-2343-40
(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
Table 11. Audio Filters
Calibrator
Test instrument
Indications
Output
Active
(% REL)
frequency
filter
Min
Max
200 Hz
50 Hz HP
98.99
101.01
2 kHz
50 Hz HP
98.99
101.01
1 kHz
300 Hz HP
98.99
101.01
10 kHz
300 Hz HP
98.99
101.01
1 kHz
3 kHz LP
98.99
101.01
100 Hz
3 kHz LP
98.99
101.01
10 kHz
15 kHz LP
98.99
101.01
1 kHz
15 kHz LP
98.99
101.01
10 kHz
98.99
101.01
>20 kHz LP
1 kHz
98.99
101.01
>20 kHz LP
(14) Reduce all outputs to minimum and disconnect equipment setup.
b. Adjustments. None
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