R&S NRP2, Руководство пользователя

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Remote Control - Commands
R&S
®
NRP2
209 User Manual 1173.9157.02 ─ 03
Example:
Valid command sequence:
FETCh:TSLot:SUM? 577us,8,0,0
FETCh:TSLot:SUM:RELative? 577us,8,0,0
invalid command sequence:
FETCh:BURSt:SUM? 0,0,0
FETCh:TSLot:SUM? 577us,8,0,0
READ:...?
The
READ:...?
command starts a measurement without further configuration and
returns the measurement result. The parameter list is compared to the current settings
before the measurement is started. If the list does not agree, an SCPI error (-221, Setting
conflict) is returned and the command is aborted. Apart from this check,
READ
corre-
sponds to the program message
INIT:IMM; FETCh[1..8]:...?
.
MEASure:...?
The
MEASure:...?
command combines
CONFigure
and
READ
.
Refer to annex
​
chapter C, "Programming Measurements" , on page 377 for application
examples to the high level measurement commands.
6.4.2 Basic Commands FETCh? and READ?
FETCh?
The command
FETCh?
without further keywords and parameter list has a special mean-
ing. While omitting parameters of the parameter list normally means that default values
are used and checked, the current measured value under
FETCh?
is supplied when it is
valid. If a measured value is not yet available, processing is suspended until a valid result
is available.
Usage: Query only
READ?
The
READ?
command without further keywords and parameter list can be compared with
FETCh?
.
READ?
starts a measurement and returns a measured value without checking
the current settings.
Usage: Query only
6.4.3 Syntactical Structure of High-Level Measurement Commands
The high-level measurement commands can be generally represented as follows:
High-Level Measurement Commands (CONFigure, MEASure, READ and FETCh)