Programming Examples 5
Keysight Models 6811C, 6812C, and 6813C Programming Guide 231
Frequency slew
The ac source also has the ability to control the slew rate of frequency changes. To
set the frequency slew rate to 30 Hz per second, use:
FREQuency:SLEW 30
At *RST the slew rate is set to INFinity, which means that frequency changes
occur instantaneously. The frequency slew rate applies to programmed changes
in frequency while the unit is operating in fixed mode. Frequency changes made
by the step, pulse, and list transients are controlled by the same rules that apply
to all other functions that are subject to transient control. Refer to “Programming
Output Transients” on page 236.
Waveform shapes
At *RST, the ac source supplies a sine waveform, but other shapes can be
selected. There are built-in tables for sine, square and clipped sine waveforms. In
addition, the user can define arbitrary waveshapes by creating a 1024 point table
of amplitudes for a single cycle.
As shown in the following examples, the FUNCtion[:SHAPe] command selects the
output waveform.
Square waveform
To select the square output waveform, use:
FUNCtion:SHAPe SQUare
Clipped waveform
To select a clipped sine waveform use:
FUNCtion:SHAPe CSINusoid
To set the clipping level to 50%, use:
FUNCtion:SHAPe:CSINusoid 50
Output voltage changes caused by the OUTPut:STATe or VOLTage:OFFSet
commands, by a protection feature disabling the output, or as a result of load
changes are not subject to this slew rate control.
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