TB 9-6625-2329-24
(a) Press TI PARAMETER RF pushbutton, enter DATA numerical value, and
press ENTER/UNITS MHz key.
(b) Press TI PARAMETER M pushbutton, enter DATA numerical value,
and press ENTER/UNIT rad key.
(10) Using measuring receiver and distortion measurement techniques measure
percent of distortion, distortion will be between specified limits in table 22.
Table 22. Distortion Accuracy
Test instrument
Measuring receiver
analyzer distortion
indications
DATA and
DATA and
(<% )
ENTER/UNITS
ENTER/UNITS
(MHz)
(rad)
15
10
0.5
46
2.5
0.5
93.5
5
0.5
187.5
10
0.5
375
20
0.5
750
40
0.5
(11) Press pushbuttons as listed in (a) through (e) below:
(a) PARAMETER LEVEL and press ON/OFFOFF key.
(b) PARAMETER M and press ON/OFFOFF key.
(c) PARAMETER RF, enter DATA 100 numerical value, and
press
ENTER/UNITS MHz key.
(d) PARAMETER M, enter DATA 10 numerical value, and
press
ENTER/UNIT rad key.
(e) ON/OFF EXT AC key.
(12) Using measuring receiver, ensure both 50 Hz high-pass filter and 15 kHz low-
pass filter are on and set to ratio mode in dB.
(13) Press PARAMETERLEVEL pushbutton and press ON/OFF ON key.
(14) Press pushbuttons on audio analyzer as listed in (a) through (c) below:
Source FREQ 300 Hz.
(a)
Source LEVEL 1 V.
(b)
Source 600 (SPCL 77).
(c)
(15) Set up audio analyzer source frequency for each row in table 23. Measuring
receiver will indicate within limits specified.
Table 23. Ext Modulation Frequency Response
Measuring receiver
Audio analyzer
indications
source
(dB)
(Hz)
Min
Max
500
-1
+1
1000
-1
+1
2000
-1
+1
5000
-1
+1
22
