Agilent Technologies E1441A user service FUNCtion:USER?, FUNCtion:SHAPe, Chapter

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 SINSQUTRIRAMPNOISDCUSER 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.

Chapter 3 Agilent E1441A SCPI Command Reference 111