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SCPI Commands for the Digital Output
VX4101A MultiPaq Instrument User Manual
3–159
NOTE. The number of data values following the memory index must not exceed
the number of memory locations (for example, a command argument of 4093 + 5
data_values specifies location 4097 which is not permitted).
If the <index> is a numeric list of indices rather than a single index, then the
memory locations indicated in the numeric list will be filled with the single
specified data value.
If the index is a single value, then the memory locations starting at the index will
be filled with successive values in the data list. The values may be in ASCII hex
or indefinite binary format. For more information, consult the IEEE Standard,
Section 7.7.6.
There are 4K words of memory available for data_values. To query several
points from memory, enter the number of points in a numeric list.
If this command is sent while the instrument is sending data, or sweeping, then
the instrument will automatically perform an implied abort and implement the
trace command. The instrument must be initiated again to start sending data
again.
If either parameter is omitted, the instrument generates an error.
The query will cause an implied abort if you enter it while the Digital Output is
generating data.
TRACe:POINts <number_of_points>
Sets the number of trace data points in a segment and the number of data points
returned in a query. The POINts command does not change the contents of
memory either within or outside the number of points specified.
This command is used to define the number of sample points that comprise an
output segment. Each segment can be comprised of up to 4096 sample points for
each of the 32 bits. If the <number_of_points> field is omitted, or is out of
limits, an error will be generated.
There is a second limitation on the trace buffer points. The number of points *
the sample period (1/sample rate) must be less than 16 seconds. If set to be
greater than this limit, the instrument will return an error upon INITiate.
TRACe:RFRequency <repeat_frequency>
Sets the repeat frequency, in Hz, of a trace pattern. The default value is Off
(disabled).