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24. Rotate SQUELCH Control fully cw to verify squelch operation.
Frequency Error Meter should indicate O ±100 Hz. Return the
SQUELCH Control fully ccw.
25. Modulate the Signal Generator with a 1 kHz tone from FM/AM-
500A, at 15 kHz deviation.
26. For each of the Frequency Error Range Switch positions listed
in Table 7-4, rotate the VAR TONE FREQ Thumbwheels to the
corresponding frequencies and verify the Frequency Error
Meter provides the correct indication.
FREQUENCY ERROR
SIGNAL GENERATOR
FREQUENCY ERROR
RANGE SWITCH
OUTPUT FREQUENCY
METER INDICATION
POSITION
MHz@ -40 dBm
Hz
RF 1 K
111.1000
0 ±50
111.1005
+500 ±50
111.0995
-500 ±50
RF 3 K
111. 0995
-500 ±100
111. 0980
-2 K ±100
111.1020
+2 K ±100
RF 10 K
111.1020
+2 K ±500
111.1050
+5 K ±500
111. 0950
-5 K ±500
Table 7-3 RF Frequency Error Testing
FREQUENCY ERROR
VAR TONE FREQ
FR EQU E.NCY ERROR
RANGE SWITCH
THUMBWHEEL SWITCH
METER INDICATION
POSITION
SETTING
Hz
AUDIO 3
1000.0
0 ±0.1
1002.0
-2 ±0.2
AUDIO 30
1020.0
-20 ±2
AUDIO 300
1200.0
-200 ±20
0800.0
+200 ±20
AUDIO 30
0980.0
+20 ±2
AUDIO 3
0998.0
+2 ±0.2
Table 7-4 Audio Frequency Error Testing
7-55
Summary of Contents for FM/AM-500
Page 152: ...DETAIL A 11 Figure 6 6 Dual vco 6 14 01 Assembl Y ...
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