TB 9-6625-2296-35
(8) Press DATA ENTRY 1 (Modulation), and 2 (AM) keys.
(9) Press DATA ENTRY 2 (IF Filters), DATA SCROLL arrow keys to select 3. 300
kHz (IF Filter), and DATA ENTRY ENTER key (to select 300 kHz IF Filter).
(10) Press DATA ENTRY 3 (Post Detection), 2 (to select Post Detected Low Pass
Filter), 3 K (3 kHz LP) and ESC (F6) (Escape) keys.
(11) Press DATA ENTRY 5 (Select AGC Type), 1 (User Defined), and 1
(Measurement) keys.
(12) Press Ret (F5) (Return) key.
(13) Adjust signal generator controls for 30 percent AM, a modulation rate of 1
kHz, set RF OUTPUT on and AM off. Record TI MOD% indication.
NOTE
Set measuring receiver filters as needed.
(14) Set signal generator AM on and adjust controls for a 30% AM indication on
measuring receiver. Record the TI MOD% indication then subtract TI MOD % indication
recorded in (13) above from this reading. Algebraically subtract this value from the
measuring receiver indication. If difference is not within limits specified in table 22,
perform b below.
(15) Set signal generator AM off and repeat technique of (7) through (14) above for
remaining signal generator and TI settings in table 22.
Measuring 1
Signal
Test instrument indications
generator Mod
receiver
LP
MOD
Min
Max
rate
indications
filter
range
(%)
(%)
1
kHz
30%
3
kHz
Autorange
-3
+3
1
kHz
40%
3
kHz
Autorange
-3
+3
1
kHz
50%
3
kHz
Autorange
-6
+6
1
kHz
60%
3
kHz
Autorange
-6
+6
1
kHz
70%
3
kHz
Autorange
-6
+6
1
kHz
80%
3
kHz
Autorange
-6
+6
1
kHz
90%
3
kHz
Autorange
-6
+6
100 Hz
30%
3 kHz
40%
-3
+3
100 Hz
90%
3 kHz
100%
-6
+6
10 kHz
90%
15 kHz
100%
-6
+6
10 kHz
30%
15 kHz
40%
-3
+3
Set the measuring receiver filters as needed.
1
CHANGE 1 63
