Anritsu LMR Master S412E Programming Manual page 85

Spectrum Analyzer Commands
:TRACe[:DATA] {1|2|3},(<header><block>)
:TRACe[:DATA]? {1|2|3}
Title: Trace Data Transfer
Description: This command transfers data from the controlling program to the
Parameter: {1|2|3},(<header><block>)
Related Command: :FORMat:DATA
S412E PM
instrument. The query form transfers trace data from the instrument to
the controller. Data is transferred to the instrument enclosed in
parentheses as (<header><block>) and from the instrument as
<header><block>.
The ASCII header 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 in the
<block>.
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. Data can be transferred to and from the 3 available
display traces. Use the commands in the MMEMory subsystem to store
and recall traces from the instrument memory. The command form does
not support setting all trace points to a single value. To do this, send the
same value to each point. Trace setup information can be acquired using
:TRACe[:DATA]:PREamble?
To acquire the data from trace A in the instrument, send
:TRACe[:DATA]? 1. A 551 point trace is returned as #42204<block
data>. <block> data could be in either INTeger,32 or REAL,32 format.
In both cases, there is 4 bytes per data point. So, 4 bytes per point * 551
data points gives 2204 bytes in <block> data. This example assumes
that :FORMat:DATA INTeger,32 or :FORMat:DATA REAL,32 has been
sent to the instrument before the query command is sent.
The query command will return a #0 if data is invalid for the active
trace.
:TRACe[:DATA]:PREamble?
PN: 10580-00319 Rev. N
4-11 :TRACe Subsystem
4-43