TB 9-6625-2330-35
(2) Press TI pushbuttons as listed in (a) through (j) below:
(a) FUNCTION-CARR FREQ.
(b) DATA ENTRY- 500 MHz.
(c) FUNCTION-CARR LEVEL.
(d) DATA ENTRY- 0 dBm.
(e) FUNCTION- RF ON to on (red light lit).
(f) FUNCTION-MOD FREQ.
(g) DATA ENTRY- 1 kHz.
(h) FUNCTION-MOD LEVEL.
(i) DATA ENTRY- 30% AM.
(j) MODULATION/AUX MOD ON ONE to on (red light lit).
(3) Set measuring receiver to measure FM with a 3 kHz low-pass filter and a 300 Hz
high-pass filter.
(4) Measuring receiver will indicate within limits specified in table 21.
Table 21. Incidental FM
Measuring
MOD
Modulation
receiver
Carrier
FREQ
%
<Hz
1 GHz
1 kHz
30
200
(5) Set measuring receiver to measure AM with 15 kHz low-pass filter and a 300 Hz
high-pass filter.
(6) Set audio analyzer to measure distortion.
(7) Press TI FUNCTION-MOD LEVEL and DATA ENTRY keys for values listed
in table 22. Using measuring receiver, measure AM percent of modulation. Measuring
receiver will indicate within limits specified in table 22.
Measuring receiver modulation indications
Test instrument
DATA ENTRY
(%)
percent of
Min
Max
modulation
30%
23
37
60%
53
67
90%
83
97
(8) Press TI FUNCTION-MOD LEVEL and DATA ENTRY keys for values listed
in table 23. Using audio analyzer, measure AM distortion. Audio analyzer will indicate
within limits specified in table 23.
Test instrument
DATA ENTRY
percent of
Audio analyzer
modulation
distortion indications
(<%)
30%
3
60%
3
90%
3
21
