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Agilent E1441A SCPI Command Reference 111
Chapter 3
Comments • The names of the five built-in arbitrary waveforms are:
“SINC”
“
NEG_RAMP”
“EXP_RISE”
“EXP_FALL”
“CARDIAC”
• To select the waveform currently stored in volatile memory, specify the
VOLATILE parameter. The keyword “VOLATILE” does not have a short form.
The correct syntax is: "FUNC:USER VOLATILE"
• The FUNC:USER command does not output the selected waveform. Use the
FUNC:SHAP USER command to output the waveform.
• If you select an arbitrary waveform name that is not currently downloaded, a
+785, “Specified arb waveform does not exist” error is generated.
• Use the DATA:CAT? command to list the names of the five built-in waveforms
(non-volatile), “
VOLATILE” if a waveform is currently downloaded to volatile
memory, and the names of any user-defined waveforms (non-volatile).
Example The following statement shows how to use the FUNC:USER command:
"FUNC:USER NEG_RAMP"
FUNCtion:USER?
[SOURce:]FUNCtion:USER? queries the arbitrary waveform currently selected.
Returns “
SINC”, “NEG_RAMP”, “EXP_RISE”, “EXP_FALL”, “CARDIAC”, “VOLATILE”,
or the name of any user-defined waveforms in non-volatile memory.
FUNCtion:SHAPe
[SOURce:]FUNCtion:SHAPe SIN|SQU|TRI|RAMP|NOIS|DC|USER selects the
function specified. The USER parameter will output the arbitrary waveform
currently selected by the FUNC:USER command. The specified waveform is output
using the previously selected frequency, amplitude, and offset settings.
Comments • Use the FREQ, VOLT, and VOLT:OFFS commands to select the frequency,
amplitude, and offset of the waveform. Or, use the APPLy command to select
the function, frequency, amplitude, and offset with a single command.
• As shown in the following table, you can use the arbitrary waveform function
with all of the modulation modes. Each “X” indicates a valid combination.