6 List Sequence Measurements
List Sequence Measurements
n = any valid subopcode for the current measurement. See the measurement command results table for
your current measurement, for information about what data is returned for the subopcodes.
This command uses the data setting specified by the FORMat:BORDer and FORMat:DATA commands and
can return real or ASCII data. (See the format command descriptions under Input/Output in the Analyzer
Setup section.)
Remote Command
:CALCulate:DATA[n]?
Notes
The return trace depends on the measurement.
In CALCulate:<meas>:DATA[n], n is any valid subopcode for the current measurement. It returns the
same data as the FETCh:<measurement>? query where <measurement> is the current
measurement.
Initial S/W Revision
Prior to A.02.00
Calculate/Compress Trace Data Query (Remote Command Only)
Returns compressed data for the currently selected measurement and sub-opcode [n].
n = any valid sub-opcode for that measurement. See the MEASure:<measurement>? command description
of your specific measurement for information on the data that can be returned.
The data is returned in the current Y Axis Unit of the analyzer. The command is used with a sub-opcode <n>
(default=1) to specify the trace. With trace queries, it is best if the analyzer is not sweeping during the
query. Therefore, it is generally advisable to be in Single Sweep, or Update=Off.
This command is used to compress or decimate a long trace to extract and return only the desired data. A
typical example would be to acquire N frames of GSM data and return the mean power of the first burst in
each frame. The command can also be used to identify the best curve fit for the data.
Remote Command
:CALCulate:DATA<n>:COMPress? BLOCk | CFIT | MAXimum | MINimum | MEAN |
DMEan | RMS | RMSCubed | SAMPle | SDEViation | PPHase [,<soffset>
[,<length>[,<roffset>[,<rlimit>]]]]
Example
To query the mean power of a set of GSM bursts:
Supply a signal that is a set of GSM bursts.
Select the IQ Waveform measurement (in IQ Analyzer Mode).
Set the sweep time to acquire at least one burst.
Set the triggers such that acquisition happens at a known position relative to a burst.
Then query the mean burst levels using, CALC:DATA2:COMP? MEAN, 24e–6, 526e–6 (These
parameter values correspond to GSM signals, where 526e–6 is the length of the burst in the slot and
you just want 1 burst.)
Notes
The command supports 5 parameters. Note that the last 4 (<soffset>,<length>,<roffset>,<rlimit>)
are optional. But these optional parameters must be entered in the specified order. For example, if
you want to specify <length>, then you must also specify <soffset>. See details below for a definition
of each of these parameters.
This command uses the data in the format specified by FORMat:DATA, returning either binary or
ASCII data.
Initial S/W Revision
Prior to A.02.00
Sequence Analyzer User's & Programmer's Reference
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