Data Query - Agilent Technologies E4406A VSA Series Programmer's Manual

Data Query

:CALCulate:DATA[n]?
Returns the designated measurement data for the currently selected
measurement and sub-opcode.
n = any valid sub-opcode for the current measurement. See the
"MEASure Group of Commands" on page 233
data that can be returned for each measurement.
Calculate/Compress Trace Data Query
:CALCulate:DATA[n]:COMPress?
BLOCk|CFIT|MAXimum|MEAN|MINimum|RMS|SAMPle|SDEViation
{,<soffset>}{,<length>}{,<roffset>}
Returns the designated trace data for the currently selected
measurement. The command can be used with sub-opcodes (n) for
measurement results that are trace data. See the following table.
This command is used to compress/decimate a long trace to extract the
desired data and only return to the computer the necessary data. A
typical example would be to acquire N bursts of GSM data and return
the mean power of each burst.
The command can also be used to identify the best curve fit for the data.
BLOCk or block data - returns whole segments from the queried
trace. For example, it could be used to return a portion of an input
signal over several timeslots.
CFIT or curve fit - applies curve fitting routines to the data. Where
<soffset> and <length> are required, and <roffset> is an optional
parameter for the desired order of the curve equation. The query will
return the following values: the x-offset (in points) and the curve
coefficients ((order + 1) values).
<Start offset> - is an optional integer. It specifies the amount of data
at the beginning of the trace that will be ignored before the
decimation process starts. It is an integer index (that starts counting
at zero) for all the elements in the trace. The default value is zero.
<Length> - is an optional integer. It defines how many trace
elements will be compressed into one value. This parameter has a
default value equal to the current trace length.
<Repeat offset> - is an optional real number. It defines the beginning
of the next field of trace elements to be compressed. This is relative
to the beginning of the previous field. This parameter has a default
value equal to the <length> variable. Select a number such that
repeated additions will round to the correct starting index.
Chapter 5
Language Reference
CALCulate Subsystem
for information on the
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