TB 9-6625-2296-35
Table 17. Amplitude Modulation Accuracy - Continued
Measuring receiver1
indications
Test instrument
Modulation
Percent
RF frequency
rate
modulation
Min
Max
10
MHz
10
kHz
90%
85.5
94.5
10
MHz
10
kHz
60%
57.0
63.0
10
MHz
10
kHz
30%
28.50
31.50
900
MHz
100
Hz
30%
28.50
31.50
900
MHz
100
Hz
60%
57.0
63.0
900
MHz
100
Hz
90%
85.5
94.5
900
MHz
1
kHz
90%
85.5
94.5
900
MHz
1
kHz
60%
57.0
63.0
900
MHz
1
kHz
30%
28.50
31.50
900
MHz
10
kHz
30%
28.50
31.50
900
MHz
10
kHz
60%
57.0
63.0
900
MHz
10
kHz
90%
85.5
94.5
1Set
measuring receiver filters as needed.
b. Adjustments
(1) Press key sequence listed in (a) through (f) below:
Meters Menu
(a) MODE MTRS ..........................
Auxiliary
(b) AUX (F6) ..................................
Recall
(c) MEMORY RCL .......................
(d) FIELD SELECT ⇑ ..................
Highlight 10. Factory Defaults
Factory Defaults recall
(e) DATA ENTRY ENTER ..........
NOTE
Assure highlighted area indicates YES before proceeding.
Factory Defaults restored
(f) DATA ENTRY ENTER ..........
(2) Position measuring receiver controls to measure AM, with low pass filter of
3 kHz and PEAK/2 detector selected.
(3) Press key sequence listed in (a) through (h) below:
RF Gen Display
(a) MODE RF GEN ......................
Gen Menu
(b) SETUP .....................................
RF Gen Setup
(c) DATA ENTRY 5 ......................
RF Gen Freq
(d) DATA ENTRY 1 ......................
121.1 MHz
(e) DATA ENTRY 1 2 1 . 1 M ......
RF Gen Level
(f) DATA ENTRY 2 ......................
0 dBm
(g) DATA ENTRY 0 ENTER .......
Return
(h) Ret (F5) ....................................
50
