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Internal FM Source
Once you have pressed Internal / External to select
the internal FM generator as the modulating signal
source, the Internal FM Status menu (above) is dis
-
played.
Press On/Off to turn FM on and off. The Internal
FM status display will reflect your selection as On
or Off; the FM modulation status area will reflect
your selection as Internal On or Off.
Press Edit Deviation to open the FM Deviation pa
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rameter, then edit the current value using the cur
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sor control keys, rotary data knob, or enter a new
value using the keypad and the appropriate termi
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nator key. The FM Deviation range is 10 kHz to
20 MHz for Locked, Locked Low-Noise, and Un
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locked Narrow FM modes and 100 kHz to 100 MHz
for Unlocked Wide FM mode. To close the open FM
Deviation parameter, press Edit Deviation or make
another menu selection.
Press Edit Rate to open the FM Rate parameter,
then edit the current value using the cursor control
keys, rotary data knob, or enter a new value using
the keypad and the appropriate terminator key. The
FM rate range is 0.1 Hz to 1 MHz for sine wave and
0.1 Hz to 100 kHz for square, triangle, and ramp
waveforms. To close the open FM Rate parameter,
press Edit Rate or make another menu selection.
Press Select Wave... to access the Modulation
Waveform Selection menu (below).
3-98 MG369XB OM
Signal Modulation Local (Front Panel) Operation