Anritsu LMR Master S412E Programming Manual page 634

17-11 :TRACe Subsystem
:TRACe[:DATA]? ALL|CONStellation|SPECtrum|EYEDiagram
Description: Transfers trace data from the instrument to the controller. Before
Cmd Parameters: NA
Query Parameters: ALL|CONStellation|SPECtrum|EYEDiagram
Range: ALL|CONStellation|SPECtrum|EYEDiagram
Default Value: NA
Default Unit: NA
Example: To transfer spectrum data:
Front Panel Access: NA
17-30
executing this command the instrument must be set to the desired
measurements. The command will only retrieve the data for graph
types currently displaying on the screen. 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. Trace setup information can be acquired using
:TRACe[:DATA]:PREamble? Use the commands in the MMEMory
subsystem to recall traces from the instrument memory.
Each graph type will have ASCII start tags and end tags. All tags will
be included no matter what the input parameter is. Graph data that has
not been requested will have a start tag followed by an end tag with no
data in between. The following is a list of all possible start and end tags:
Start Tag
<CONSTELLATION>
<SPECTRUM>
<EYE_DIAGRAM>
The tags listed above will always show up in the response and will
always be in the order described.
Constellation data will have two elements per point. There will be
551 constellation points total.
Spectrum data will only have one element per point. There will also
only be 551 points per trace.
Eye diagram will have 12 X-axis points followed by
(12 x ((551 / Number Of Symbols) - 1)) Y-axis points.
Each eye line will consist of 12 Y-axis points combined with the X-axis
points that are sent at the beginning.
Please note that this command only works in the TETRA Analyzer
measurement.
:TRACe? SPECtrum
PN: 10580-00319 Rev. N
End Tag
</CONSTELLATION>
</SPECTRUM>
</EYE_DIAGRAM>
TETRA Commands
S412E PM