Fixed WiMAX Commands 7-10 :TRACe Subsystem
S412E PM PN: 10580-00319 Rev. N 7-25
: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:
SPECtrum|PVTime|CONStln|SFLatness|EVSCarrier|EVSYmbol.
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 CONStln there is only
one value per data point. If max hold is set to ON for SPECtrum and
EVM vs. Sub Carrier then the max hold value is returned. For
CONStln, each data point is represented by 3 values 4 bytes each: IData
(no units), QData (no units), and the constellation type (no units). For
SPECtrum and PVTime unit is in dBm. For Spectral Flatness unit is in
dB. For EVM vs Sub Carrier and EVM vs Symbol unit is in percent.
Note that the instrument must be set in the selected view. Use the
CONFigure command to set the unit to the selected view.
Parameter: <trace type>
Related Command: :FORMat[:DATA]
:TRACe[:DATA]:PREamble?
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