2-9
Using Functions
Setting Up Internally-Generated Frequency Modulation
Setting the FM Rate
1. In the same FM menu, press the FM Rate softkey. FM rate becomes the active function
and the normal preset value for FM rate is displayed in the active entry area.
2. Enter 10 kHz using the numeric keypad and pressing the
kHz terminator softkey. The
new FM rate is displayed below the
FM Rate softkey. You should see 10.0000 kHz in
the second line of the softkey.
Turning On Frequency Modulation
The signal generator is now configured to output a 0 dBm, frequency-modulated
carrier at 104.9 MHz with the FM deviation set to 75 kHz and the FM rate set to
10 kHz. The shape of the waveform is a sinewave (notice that sine is the default
for the
FM Waveform softkey - press More (1 of 2) to see the softkey). Follow these
remaining steps to output the frequency-modulated signal.
1. In the same FM menu, press the FM Off On softkey. FM toggles from Off to On. Notice,
also, that the FM display annunciator is turned on indicating that you have enabled
frequency 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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