TB 9-6625-2296-24
Table 4. AF Generator Frequency/Distortion.
Audio analyzer
Test instrument
distortion
AF Gen frequency
Frequency counter indications
indications
settings
Min
Max
40
kHz
39.9600 kHz
40.040
kHz
<1.0%
20
kHz
19.980
kHz
20.020
kHz
<1.0%
10
kHz
9.990
kHz
10.010
kHz
<1.0%
1.1
kHz
1.0989 kHz
1.1011
kHz
<1.0%
1.0
kHz
999.0000 Hz
1.0010
kHz
<0.7%
700 1
Hz
699.3000 Hz
700.7000
Hz
<0.7%
10 1
Hz
9.9900 Hz
10.0100
Hz
<1.0%
1 Press
DATA ENTRY ENTER key for Hz.
(7) Press key sequence listed in (a) through (g) below:
(a) FIELD SELECT ................
Select GEN 1
(b) DATA ENTRY ENTER ........
Set GEN 1 Off
(c) FIELD SELECT ................
Select GEN 2
(d) DATA ENTRY ENTER ........
Set GEN 2 On
(e) FIELD SELECT ................
Select GEN 2 AF
(f) DATA ENTRY ENTER ........
Highlight frequency setting
(g) DATA ENTRY 4 0 K .............
40 kHz setting
(8) Repeat steps (4) and (6) above for GEN 2 AF.
(9) Press FIELD SELECT key to select GEN 2 and press DATA ENTRY
ENTER key to set GEN 2 Off.
(10) Connect TI AUDIO OUT to audio analyzer INPUT HI and resistance standard
set to 150 Ω. Set audio analyzer to measure distortion in percent.
(11) Press key sequence listed in (a) through (e) below:
(a) FIELD SELECT ................
Select GEN 1
(b) DATA ENTRY ENTER ........
Set GEN 1 On
(c) FIELD SELECT ................
Select GEN 1 AF
(d) DATA ENTRY ENTER ........
Highlight frequency setting
(e) DATA ENTRY 4 0 K .............
40 kHz setting
(12) Repeat technique of (4) and (6) through (9) above using audio analyzer distortion
indications. Audio analyzer distortion indications will be within limits specified in table 4.
b. Adjustments. No further adjustments can be made.
16
