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78 Agilent E1441A SCPI Command Reference
Chapter 3
• The following statement shows how to use the DATA VOLATILE command to
download nine points to volatile memory:
"DATA VOLATILE, 1,.75,.5,.25,0,-.25,-.5,-.75,-1"
:DAC VOLATILE
DATA:DAC VOLATILE, <binary block>|(<value>, <value>, . . .) downloads binary
integer values between -2047 and +2047 into volatile memory. You can download
between 8 and 16,000 points per waveform in
IEEE-488.2 binary block format or as
a list of values. The binary range of values corresponds to the values available using
internal 12-bit DAC (Digital-to-Analog Converter) codes.
Comments • The values -2047 and +2047 correspond to the peak values of the waveform.
For example, if you have set the output amplitude to 10 Vpp,
“-2047” corresponds to -5 volts and “+2047” 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).
• The DATA:DAC 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.
• The following statement shows how to use the DATA:DAC VOLATILE
command to download eight integer points using the binary block format (see
also “Using the IEEE-488.2 Binary Block Format” below):
"DATA:DAC VOLATILE, #216 Binary Data
• The following statement shows how to download eight integer points (eight
<value>s) with the DATA:DAC VOLATILE command:
"DATA:DAC VOLATILE, 2047,1536,1024,512,0,-512,-1536,-2047"