7-30 Wave Functions (6221 Only) Model 6220/6221 Reference Manual
Return to Section 7 topics
8. SOUR:WAVE:ARB:DATA <NRf>[,NRf,...NRf] ‘ Define arbitrary points
This command creates the points list for the arbitrary waveform. The data
must be in the range -1 to 1. The maximum number of points allowed in this
command is 100; use APPend to add more points. Note that points are stored
in volatile RAM (memory location 0). To save them to locations 1 to 4, you
must use the COPY command (below).
9. SOUR:WAVE:ARB:APP <NRf>[,NRf,...NRf] ‘ Append arbitrary points
This command appends the points list for the arbitrary waveform. The data
must be in the range -1 to 1. The maximum number of points allowed in this
command is 100; use another APPend to add more points (65,535 maximum).
Note that points are appended to those stored in volatile RAM (memory loca-
tion 0). To save all points to locations 1 to 4, you must use the COPY com-
mand (below).
10. SOUR:WAVE:ARB:COPY <NRf> ‘ Copy waveform points to NVRAM
This command copies the arbitrary waveform from volatile RAM (location 0)
into nonvolatile RAM location 1-4. The location number is the one to be used
by the SOUR:WAVE:FUNC ARB command above.
11. SOUR:WAVE:ARB:POIN? ‘ Query points in arbitrary waveform
This command queries the number of points in the arbitrary waveform.
12. SOUR:WAVE:ARM ‘ Arm waveform function
This command arms the 6221 for waveform output. Note that error checking is
performed when the waveform is armed. Use SOUR:WAVE:INIT below to
start the wave output. Note that whatever value the source is at will get set to
zero at this time. The old source value and range are not recalled when you
exit the wave (SOUR:WAVE:ABOR or EXIT key), but instead the source will
be left on the new range and the output will be returned to zero.
13. SOUR:WAVE:INIT ‘ Start waveform function
This command normally starts the programmed waveform function. Note that
the output must be on (OUTP ON) for the waveform signal to appear at the
output terminals. If the external trigger mode is enabled, the waveform will not
start until an external trigger is received. The inactive value will be output until
then.
14. SOUR:WAVE:ABOR ‘ Abort waveform function
This command immediately aborts the waveform and returns the Model 6221
to the DC mode with the output off and the source set to zero. Note that this
command has the same effect as SOUR:SWEep:ABORt (see “SCPI com-
mands — sweeps,” on page 4-18).
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