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Press Edit Depth to open the AM Depth 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
(kHz/ms/STEPS for Linear; MHz/ms/dB for Log). The
AM Depth range is 0% to 100% in Linear and
0 dB to 25 dB in Log. To close the open AM Depth
parameter, press Edit Depth or make another menu
selection.
Press Edit Rate to open the AM 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
AM 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 AM Rate parameter,
press Edit Rate or make another menu selection.
Press Select Wave... to access the Modulation
Waveform Selection menu (below)
This menu displays the modulation waveforms (de
-
scription to the left) that are available from the AM
generator. Use the cursor control keys to highlight
the desired modulation waveform, then press Select
to select the highlighted waveform. The AM Status
display will reflect your selection.
Press < Previous to return to the main AM Status
menu display.
Press Internal / External to select the source of the
modulating signal. Internal selects the modulating
signal from the internal AM generator; external se
-
lects the modulating signal from an external source.
The AM status display will reflect your selection.
3-94 MG369XB OM
Signal Modulation Local (Front Panel) Operation
Reduce Rate
This warning message is displayed
when the AM Rate is set >100 kHz
for a non-sine wave modulating
waveform. Amplitude modulation
of the output signal will continue
but the modulating waveform may
be distorted.
sine wave
square wave
positive ramp
negative ramp
Gaussian noise
uniform noise
triangle wave
GN
UN