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Remote control basics
R&S
®
NRPM
195
User Manual 1425.8663.02 ─ 07
Annex
A
Remote control basics
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A.1
SCPI command structure
SCPI commands - messages - are used for remote control. Commands that are
not taken from the SCPI standard follow the SCPI syntax rules. The
R&S
NRPM3(N) sensor modules support the SCPI version 1999. The SCPI stan-
dard is based on standard IEEE 488.2 and aims at the standardization of device-
specific commands, error handling and the status registers.
SCPI commands consist of a so-called header and, usually, one or more parame-
ters. The header and the parameters are separated by a "white space" (ASCII
code 0 to 9, 11 to 32 decimal, e.g. blank). The headers can consist of several
mnemonics (keywords). Queries are formed by appending a question mark
directly to the header.
The commands can be either device-specific or device-independent (common
commands). Common and device-specific commands differ in their syntax.
A.1.1
Syntax for common commands
Common (=device-independent) commands consist of a header preceded by an
asterisk (*) and possibly one or more parameters.
Examples:
*RST
RESET
Resets the instrument.
*ESE
EVENT STATUS ENABLE
Sets the bits of the event status
enable registers.
SCPI command structure