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Press On/Off to turn FM on and off. The external
FM status display will reflect your selection as On
or Off; the FM modulation status area will reflect
your selection as External On or Off.
Press Edit Sensitivity to open the FM sensitivity pa
-
rameter, then edit the current value using the cur
-
sor control keys, rotary data knob, or enter a new
value using the keypad and the appropriate termi
-
nator key. The FM Sensitivity range is ±0.0025 radi
-
ans/V to ±5 radians/V for Narrow FM mode and
±0.25 radians/V to ±500 radians/V for Wide FM
mode. To close the open FM Sensitivity parameter,
press Edit Sensitivity or make another menu selec
-
tion.
To select the FM operating mode, press Mode > .
The FM Mode menu (below) is displayed.
Press Narrow to select the Narrow FM operating
mode; press Wide to select the Wide FM operating
mode. The FM status display will reflect your selec
-
tion.
Press < Previous to return to the FM Status menu
display.
MG369XB OM 3-105
Local (Front Panel) Operation Signal Modulation
ERR
This error message is displayed
when the external FM modulating
signal exceeds the input voltage
range.The message“Reduce FMIn
-
put Level” also appears at the bot
-
tom of the FM status display. FMis
turned off until the modulating sig
-
nal is within the input voltage
range.