Crown FM600 - Modulation Compensator

2-6 FM600 User’s Manual
2.3.1 Modulation Compensator
The Modulation trim-potentiometer (see Illustration 2–10) compensates for slight variations in
deviation sensitivity with frequency. Set the trim-pot dial according to the following graph:
108 0
106 10
104 15
102 25
100 35
98 40
97.1 45
96 55
94 60
92 70
90 75
88 80
86 80
84 80
82.4 70
82 65
80 55
78 30
76 0
Frequency of Operation (MHz) Modulation Compensation Pot Setting
Illustration 2–9 Modulation Compensator Settings
These compensator settings are approximate. Each mark on the potentiometer represents
about 1.8% modulation compensation.
Modulation
Compensator
Pot
Illustration 2–10 Modulation Compensator Pot