5-10 :Trace Subsystem VNA Commands
5-52 PN: 10580-00319 Rev. N S412E PM
5-10 :Trace Subsystem
This subsystem contains commands related to the transfer of trace data to and from the
instrument.
:TRACe[:DATA]? [1]|2|3|4
Description: Transfers the trace data of the given trace from the instrument to the
controller.
The format of the block data that is returned can be specified by the
command :FORMat:DATA. The response begins with an ASCII header
that specifies the number of data bytes. It appears in the format #AX,
where A is the number of digits in X, and X is the number of bytes
that follow the header. Each data point is separated by a comma
delimiter. Independent of the Graph Type that is associated with the
trace, each data point that is transferred by this command consists of
complex measurement data (Real and Imaginary values for that point).
A 551 point trace therefore has a total of 1102 points that get
transferred.
Cmd Parameter: NA (query only)
Query Response: <block> (returns block data)
Related Command: :FORMat:DATA;
:CALCulate<Tr>:DATA?
Front Panel Access: NA
:TRACe:PREamble? [1]|2|3|4
Description: Returns trace header information for the specified trace. Data can be
transferred from the 4 available display traces. Use the commands in
the MMEMory subsystem to store and recall traces from the
instrument memory. The response begins with an ASCII header. The
header specifies the number of following bytes. It appears in the format
#AX, where A is the number of digits in X, and X is the number of
bytes that follow the header. Refer to the following section, “Example
Response Format:”.
Parameters are returned in comma-delimited ASCII format. Each
parameter is returned as “NAME=VALUE[UNITS]”. Note that the
parameters that are returned depend on the firmware version and that
this document does not cover all parameter values that are returned by
the command.
Cmd Parameter: NA (query only)
Query Response: <block> (returns block data)
Front Panel Access: NA
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