TB 6-6625-2329-24
(11) Set measuring receiver to measure M.
(12) Press TI PARAMETER RF pushbutton, enter DATA numerical value, and
press ENTER/UNITS MHz key for each row in table 18. Measuring receiver will indicate
within limits specified.
Table 18. Incidental PM
Test instrument
Measuring receiver
DATA and
modulation
ENTER/UNITS
indications
(MHz)
(<rad)
4
0.2
100
0.2
400
0.2
1000
0.2
(13) Press pushbuttons as listed in (a) through (c) below:
(a) PARAMETER RF, enter DATA 100 numerical value, and
press
ENTER/UNITS MHz key.
(b) PARAMETER AM, enter DATA 80 numerical value, and
press
ENTER/UNITS % key.
(c) PARAMETER AM and press ON/OFF EXT AC key.
(14) Press measuring receiver push buttons to measure AM with all filters off, then
set measuring receiver to RATIO mode.
(15) Press pushbuttons on audio analyzer as listed in (a) through (e) below:
(a) Source FREQ - 30 Hz.
(b) Source LEVEL - 1 V.
(c) Source600 (SPCL 77).
(16) Set up audio analyzer source frequency for each row in table 19. Measuring
receiver will indicate within limits specified.
Table 19. Ext Modulation Frequency Response
Measuring Receiver
Audio analyzer
indications
source
(dB)
(Hz)
Min
Max
100
-0.4
+0.4
1000
-0.4
+0.4
2000
-0.4
+0.4
5000
-0.4
+0.4
10000
-0.4
+0.4
20000
-1
+1
50000
-1
+1
(17) Reduce output on audio analyzer.
19