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Agilent E1441A SCPI Command Reference 77
Chapter 3
DATA
Subsystem
Syntax
DATA VOLATILE, <value>,<value>, . . .
DATA:DAC VOLATILE, <binary block> | <value>,<value>, . . .
DATA
:ATTRibute:AVERage? [<arb name>]
:ATTRibute:CFACtor? [<arb name>]
:ATTRibute:POINts? [<arb name>]
:ATTRibute:PTPeak? [<arb name>]
:CATalog?
:COPY <destination arb name> [,VOLATILE]
:DELete <arb name>
:DELete:ALL
:NVOLatile:CATalog?
:NVOLatile:FREE?
VOLATILE
DATA VOLATILE, <value>, <value>,. . . is used to download floating-point values
between -1 and +1 into volatile memory. You can download between 8 and 16,000
points per waveform.
Comments • The values -1 and +1 correspond to the peak values of the waveform.
For example, if you set the amplitude to 10 Vpp, “-1” corresponds to -5 volts
and “+1” corresponds to +5 volts.
• The maximum amplitude will be limited if the data points do not span the full
range of the output DAC (Digital-to-Analog Converter). For example, the
built-in “SINC” waveform does not use the full range of values between ±1 and
therefore its maximum amplitude is 6.084 Vpp (into 50 ohms).
• Downloading floating-point values (using DATA VOLATILE) is slower than
downloading binary values (using DATA:DAC VOLATILE) but is more
convenient when using trigonometric functions which return values between
-1 and +1.
• The DATA VOLATILE command overwrites the previous waveform in
VOLATILE memory (no error is generated). Use the DATA:COPY command to
copy the waveform to non-volatile memory.
• Up to four user-defined waveforms can be stored in non-volatile memory. Use
the DATA:DEL command to delete the waveform in VOLATILE memory or any
of the four user-defined waveforms in non-volatile memory. Use the
DATA:CAT? command to list all waveforms currently stored in volatile and
non-volatile memory (and the built-in waveforms).
• After downloading the waveform data to memory, use the FUNC:USER
command to choose the active waveform and the FUNC:SHAP USER
command to output it.