2-7
Using Functions
Setting Up Internally-Generated Amplitude Modulation
Setting the AM Rate
1. In the same AM menu, press the AM Rate softkey. AM rate becomes the active function
and the normal preset value for AM rate is displayed in the active entry area.
2. Enter 10 kHz using the numeric keypad and pressing the
kHz terminator softkey. The
new AM rate is displayed below the
AM Rate softkey. You should see 10.0000 kHz in
the second line of the softkey.
Turning On Amplitude Modulation
The signal generator is now configured to output a 0 dBm, amplitude-modulated
carrier at 1340 kHz with the AM depth set to 90% and the AM rate set to 10 kHz.
The shape of the waveform is a sinewave (notice that sine is the default for the
AM Waveform softkey). Follow these remaining steps to output the
amplitude-modulated signal.
1. In the same AM menu, press the AM Off On softkey. AM toggles from Off to On.
Notice, also, that the AM display annunciator is turned on indicating that you have
enabled amplitude modulation.
2. Press the front panel
RF On/Off key to toggle RF on. Notice that the display annunciator
changes from RF OFF to RF ON. The modulated signal is now available at the RF
OUTPUT connector.
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