Remote control commands
R&S
®
NRX
191
User Manual 1178.5566.02 ─ 09
13.4.5
Structure of combining commands
SCPI commands consist of a so-called header and, usually, one or more parameters,
see also
Chapter 14.2, "SCPI command structure"
on page 468. The header of com-
bining commands consists of:
<subsystem><meas_type>[<calc_function>][?]
The header is followed by the parameter list, so that the following syntax results:
<subsystem><meas_type>[<calc_function>][?] <parameter_list>
<subsystem>
The header starts with the subsystem, also called root-level command. The subsys-
tems of combining commands are:
●
CONFigure<Measurement>
●
FETCh<Measurement>
●
READ<Measurement>
●
MEASure<Measurement>
The
<Measurement>
suffix selects the measurement, see also
surement settings and results"
<meas_type>
This mnemonic selects the measurement type. For example,
[:SCALar][:POWer][:AVG]
selects the continuous average measurement.
<calc_function>
This mnemonic is optional and selects the calculation function. The lower-level com-
mand for calculation functions is
CALCulate<Measurement>:MATH[:EXPRession]
on page 328. If the calculation function is not specified, the measured value of the pri-
mary channel is output.
<parameter_list>
The parameter list differs from measurement type to measurement type. Combining
commands of the same measurement type have the same parameter list.
Parameters in square brackets can be omitted. If omitted, they are kept unchanged. If
you want to make sure that the default values of these parameters are used, perform a
reset (
) before sending the high-level command.
Table 13-1: Alphabetical parameter overview
Parameter
Description
<buffered_size>
Mandatory. Number of requested measured values.
[SENSe<Sensor>:][POWer:][AVG:]BUFFer:SIZE
<capture_time>
Mandatory. Period within which measured data are captured in the trace
measurements.
Making measurements
