TB 9-6625-2049-35
7
8. Harmonic Distortion
a. Performance Check
(1) Connect TI
EXT REF IN 1, 10 MHz
to spectrum analyzer
10 MHz REF
IN/OUT
.
(2) Connect TI
SIGNAL
to spectrum analyzer
INPUT 50
Ω
Ω
.
(3) Press keys and enter values using
DATA
keys as listed in (a) through (h) below:
(a)
SIGNAL
off (option 002 not lit).
(b)
FUNCTION
sine wave.
(c)
ENTRY AMPTD
.
(d)
-20
dBm
.
(e)
ENTRY DC OFFSET
.
(f)
0
VOLT
.
(g)
ENTRY FREQ
.
(h)
20
MHz
.
(4) Adjust spectrum analyzer controls to display 20 MHz fundamental and at least
four harmonics. All harmonics will be at least 25 dB below fundamental.
(5) Enter
14 MHz
using TI
DATA
keys. Adjust spectrum analyzer controls to
display 14 MHz fundamental and at least four harmonics. All harmonics will be at least 30
dB below fundamental.
(6) Enter
1.9 MHz
using TI
DATA
keys. Adjust spectrum analyzer controls to
display 1.9 MHz fundamental and at least four harmonics. All harmonics will be at least
40 dB below fundamental.
(7) Enter
190 kHz
using TI
DATA
keys. Adjust spectrum analyzer controls to
display 190 kHz fundamental and at least four harmonics. All harmonics will be at least
60 dB below fundamental.
(8) Enter
100
kHz
using TI
DATA
keys. Adjust spectrum analyzer controls to
display 100 kHz fundamental and at least four harmonics. All harmonics will be at least
60 dB below fundamental.
(9) Enter
40
kHz
using TI
DATA
keys. Adjust spectrum analyzer controls to
display 40 kHz fundamental and at least four harmonics. All harmonics will be at least 65
dB below fundamental.
(10) Disconnect TI from spectrum analyzer.
(11) Connect TI
SIGNAL
to audio analyzer
INPUT HIGH
using 50
Ω
feedthrough
termination.
(12) Press keys and enter values using
DATA
keys as listed in (a) through (c) below:
