TB 9-6625-103-24
(4) Set measuring receiver to acquire frequency then verify that the measuring
receiver indication is < 5 % AM.
(5) Set measuring receiver to acquire frequency then measure frequency
modulation, with PEAK +-/2 detector.
(6) Verify that the measuring receiver indicates within limits listed in table 15.
(7) Repeat technique of (3)(d), (f), (5) and (6) above for remaining rows in table 15.
Table 15. Internal FM.
TI
Measuring receiver indication
FREQ
FM DEV
Min (Hz)
Max (Hz)
3 GHz
250 Hz
225.0
275.0
1 kHz
900
1100
100 kHz
90000
110000
400 kHz
360000
440000
(8) Press TI keys as listed in (a) through (f) below.
(a)
Preset.
(b)
RF On/Off to off.
(c)
AMPD, -, 1, 0, and dBm.
(d)
FREQ, 1, 0, MHz.
(e)
RF On/Off to on.
(f)
FM, FM RATE, 1, kHz, FM Dev, 2, 0, kHz and FM Off/On to on.
(9) Set measuring receiver to acquire frequency then measure frequency
modulation, with PEAK +-/2 detector, 50 Hz high pass filter and a 15 kHz low pass filter.
(10) Verify that the measuring receiver indicates within limits listed in table 16.
(11) Repeat technique of (8),(d), (f), (9) and (10) above for remaining rows in table 16.
Table 16. Internal FM Distortion.
TI
Measuring receiver indication
FREQ
FM rate
FM dev. (kHz)
Distortion (%)
≤1
10 MHz
1 kHz
20
≤3
400
≤3
375 MHz
1 kHz
400
≤1
20
≤1
500 MHz
1 kHz
20
≤3
400
≤3
750 MHz
1 kHz
400
≤1
20
≤1
1.5 GHz
1 kHz
20
≤3
400
≤3
3 GHz
1 kHz
400
≤1
20
≤1
11 GHz
1 kHz
20
≤3
400
≤3
26 GHz
1 kHz
400
≤1
20
(12) Connect function generator Output to the TI FM input rear panel.
