TB 9-6625-103-24
(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)
AM, AM RATE, 4, 0, 0, Hz, AM DEPTH, 3, 0, % and AM Off/On to on.
(9) Set measuring receiver to acquire frequency then measure amplitude
modulation, with PEAK +-/2 detector.
(10) Verify that the measuring receiver indicates within limits listed in table 12.
(11) Repeat technique of (8) through (10) above for remaining rows in table 12.
Table 12. Internal AM Distortion.
TI
Measuring receiver
indication
FREQ
AM rate
AM depth (%)
Distortion (%)
≤6
10 MHz
1 kHz
30
≤8
70
≤8
90
≤8
20 GHz
1 kHz
90
≤8
70
≤6
30
(12) Connect function generator Output to the TI AM input rear panel.
(13) 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)
AM, AM Source, Ext, AM DEPTH, 3, 0, % and AM Off/On to on.
(14) Set function generator for a 400 Hz, 2 Vp-p sine wave output and turn output on.
(15) Set measuring receiver to acquire frequency then measure amplitude
modulation, with PEAK +-/2 detector.
(16) Verify that the measuring receiver indicates within limits listed in table 13.
(17) Repeat technique of (13)(d), (f) through (16) above for remaining rows in
Table 13. External AM.
TI
Function Generator
Measuring receiver indication
FREQ
AM depth (%)
Frequency
Min (%)
Max (%)
10 MHz
30
400 Hz
28.20
31.80
70
65.80
74.20
70
1 kHz
61.90
78.10
30
23.10
36.90
20 GHz
70
400 Hz
65.80
74.20
30
28.20
31.80
30
1 kHz
23.10
36.90
70
61.90
78.10
