Select one of the seven built-in arbitrary waveforms, one of four user-
defined waveforms, or the waveform currently downloaded to volatile
memory. The :FUNC:USER? query returns either EXP_RISE, EXP_FALL,
HAVERSINE, SINC, CARDIAC, VOLATILE, GAUSSIAN, NEG_RAMP or
the name of any user-defined waveforms in non-volatile memory.
This command does not activate the selected arbitrary waveform. Use the
e.g. FM:INT:FUNC USER command to activate the usage of the
modulation memory (16k).
The names of the seven built-in arbitrary waveforms are: EXP_RISE,
EXP_FALL, HAVERSINE, SINC, GAUSSIAN, CARDIAC and
NEG_RAMP.
To select the waveform currently stored in volatile modulation memory,
specify the VOLATILE parameter. The keyword VOLATILE does not have a
short form.
If you select a waveform name that is not currently downloaded, a
“Specified arb waveform does not exist” error is generated.
The instrument does not distinguish between upper- and lower-case letters.
Therefore, ARB_1 and arb_1 are the same name. All characters are
converted to upper case.
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