10-9 :TRACe Subsystem Chapter 10 — GSM Commands
10-18 PN: 10580-00341 Rev. C MS2720T PM
10-9 :TRACe Subsystem
This subsystem contains commands related to the transfer of trace data to and from the
instrument.
:TRACe:PREamble? <trace type>
Title: Trace Header Transfer
Description: Returns trace header information for the specified trace. The <trace
type> must be one of the following:
SINGle|MULTi|PVTFrame|PVTSlot|DEMod
Data can be transferred to and from the 5 available display trace types.
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
looks like #AX, where A is the number of digits in X and X is the
number of bytes that follow the header. Note that the instrument must
be set in the selected view. Use the CONFigure commands to set the
unit to the selected view. Parameters are returned in comma-delimited
ASCII format. Each parameter is returned as “NAME=VALUE[
UNITS],” Valid parameters are shown in “GSM Parameter Names”
on page 2-20.
Parameter: <trace type>
Related Command: :TRACe:DATA?
:TRACe[:DATA]? <trace type>
Title: Trace Data Transfer
Description: This command transfers trace data from the instrument to the
controller. The <trace type> must be one of the following:
SINGle|MULTi|PVTFrame|PVTSlot|DEMod.
The format of the block data in the query form is specified by
:FORMat:DATA. The block data in the command form is always sent in
ASCII format. The response begins with an ASCII header that specifies
the number of data bytes. It looks like #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. Trace setup information
can be acquired using :TRACe[:DATA]:PREamble?.
Use the commands in the MMEMory subsystem to store and recall
traces from the instrument memory. Except for DEMod, there is only
one value per data point. For DEMod, each data point is represented by
2 values, 4 bytes each: IData (no units), and QData (no units). For
SINGle, MULTi, PVTFrame, and PVTSlot, the unit is in dBm. Note
that the instrument must be set in the selected view. Use the
CONFigure commands to set the unit to the selected view.
Parameter: <trace type>
Related Command: :FORMat[:DATA]
:TRACe[:DATA]:PREamble?
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