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Arbitrary Waveform Hopping
69
Generating Arbitrary Waveforms with the HP E1340A
This program performs waveform hopping of waveform segments A and B.
Use a very stable 1 kHz, 0 to 5 V square wave applied to the AFG's " Aux
In" connector to switch between the waveform segments. The positive level
of the square wave outputs waveform segment A to generate a 5 cycle sine
wave. The zero level of the square wave outputs waveform segment B to
generate a 5 cycle triangle wave. (You may need to adjust the 1 kHz square
wave to output a stable arbitrary waveform.) There will be about a 20 msec
delay between a transition on the " Aux In" connector and the output
switching.
1. Reset the AFG -
*RST
The
*RST
command aborts waveform output and sets the AFG to a
defined state.
2. Setup the AFG for an Arbitrary Waveform Output -
[SOURce:]FREQuency[:CW|FIXed] <
[SOURce:]FUNCtion[:SHAPe] USER
[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] <
These commands setup the AFG to output arbitrary waveforms.
3. Select the First Waveform Segment -
[SOURce:]LIST[:SEGMent]:SELect A
Use
to select the first waveform segment.
A
4. Store the First Waveform Segment as Voltages -
[SOURce:]LIST[:SEGMent]:VOLTage <
This command stores the points of the " A" waveform segment into
the AFG's segment memory. These points are sent to the AFG as
volts which are the output voltage points that constitutes the
waveform segment.
frequency
>
amplitude
voltage_list
>
Chapter 3
>
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