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Chapter 4 Remote Interface Reference
Arbitrary Waveform Commands (Option 002)
4
to output it.
• The following statement shows how to use the DATA command to
download seven points to volatile memory.
DATA VOLATILE, 1, .67, .33, 0, -.33, -.67, -1
DATA:DAC VOLATILE, {<binary block>|<value>, <value>, . . . }
Download binary or decimal integer values from -8191 to +8191 into
volatile memory. You can download from 1 to 8,192 (8K) points per
waveform in IEEE-488.2 binary block format or as a list of values.
The range of values corresponds to the values available using internal
14-bit DAC (Digital-to-Analog Converter) codes. The function generator
takes the specified number of points and expands them to fill waveform
memory.
• The values -8191 and +8191 correspond to the peak values of the
waveform (if the offset is 0 volts). For example, if you set the output
amplitude to 10 Vpp, “+8191” corresponds to +5V and “-8191”
corresponds to -5V.
• The maximum amplitude will be limited if the data points do not
span the full range of the output DAC. For example, the built-in
“Sinc” waveform does not use the full range of values between ±8191
and therefore its maximum amplitude is 6.087 Vpp (into 50 ohms).
•The DATA:DAC command overwrites the previous waveform in
volatile memory (and no error will be 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 (as well as the
five built-in waveforms).
• After downloading the waveform data to memory, use the FUNC:USER
command to choose the active waveform and the
FUNC USER
command
to output it.
33210A users guide.book Page 225 Wednesday, July 16, 2008 11:16 AM
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