Command Reference
R&S
®
ZNC
369
User Manual 1173.9557.02 ─ 13
6.1.1 Upper/Lower Case
Upper/lower case characters characterize the long and short form of the mnemonics in
a command. The short form consists of all upper-case characters, the long form of all
upper case plus all lower case characters. It is recommended to use either the short form
or the long form; mixed forms are not always recognized. The R&S ZNC itself does not
distinguish upper case and lower case characters.
6.1.2 Special Characters
The following special characters are frequencly used in the command description:
●
|
A vertical stroke characterizes alternative parameter settings. Only one of the
parameters separated by | must be selected.
●
[ ]
Mnemonics in square brackets can be omitted when composing the command
header. The complete command must be recognized by the instrument for reasons
of compatibility with the SCPI standard. Parameters in square brackets are optional
as well. They may be used in some application contexts, omitted in others.
●
{ }
Braces or curly brackets enclose one or more parameters that may be included
zero or more times.
6.1.3 Parameters
Many commands are supplemented by a parameter or a list of parameters. Parameters
either provide alternative options (setting a or setting b or setting c ..., see special char-
acter "|"), or they form a list separated by commas (setting x, y).
●
<Parameter1>, <Parameter2>...:
In the command tables and lists, parameters are
generally described by a name (Parameter1, Parameter2...) written in angle brackets
(<>). In an application program, <Parameter1>, <Parameter2>... must be replaced
by one of the possible settings reported in the detailed parameter description.
Example:
CONTrol:AUXiliary:C[:DATA] <DecValue>
with <DecValue> = 0 to 255
--> possible command syntax:
CONTrol:AUXiliary:C:DATA 1
●
NAN (Not A Number)
(as a returned value) is generally used to represent missing
data, e.g. if a portion of a trace has not been acquired yet. It is also returned after
invalid mathematical operations such as division by zero. As defined in the SCPI
standard, NAN is represented as 9.91 E 37.
●
INV (INValid)
is returned e.g. if a limit check is performed without defining the appro-
priate tolerance values.
6.1.4 Numeric Suffixes
Symbols in angular brackets (<Ch>, <Chn>, <Mk>...) are numeric suffixes. Numeric suf-
fixes are replaced by integer numbers to distinguish various items of the same type. The
analyzer provides numeric suffixes for channels, traces, ports, markers etc. If unspecified,
a numeric suffix is replaced by 1.
Special Terms and Notation
