Remote Control Basics
R&S
®
NRX
454
User Manual 1178.5566.02 ─ 07
The commands can be either device-specific or device-independent (common com-
mands). Common and device-specific commands differ in their syntax.
14.2.1
Syntax for Common Commands
Common (=device-independent) commands consist of a header preceded by an aster-
isk (*) 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.
*ESR?
EVENT STATUS QUERY
Queries the contents of the event status
register.
*IDN?
IDENTIFICATION QUERY
Queries the instrument identification
string.
14.2.2
Syntax for Device-Specific Commands
Long and short form
The mnemonics feature a long form and a short form. The short form is marked by
upper case letters here, to distinguish it from the long form, which constitutes the com-
plete word. Either the short form or the long form can be entered; other abbreviations
are not permitted.
Example:
INITiate:CONTinuous
is equivalent to
INIT:CONT
or
init:cont
.
Case-insensitivity
Upper case and lower case notation only serves to distinguish the two forms in the
manual, the instrument itself is case-insensitive.
Numeric suffixes
If a command can be applied to multiple instances of an object, e.g. specific channels
or sources, the required instances can be specified by a suffix added to the command.
Numeric suffixes are indicated by angular brackets (<1...4>, <n>, <i>) and are replaced
by a single value in the command. Entries without a suffix are interpreted as having the
suffix 1.
SCPI Command Structure
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