R&S ZVL
Command Reference
Special Terms and Notation
Operating Manual 1303.6580.32-05
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with <numeric_value> = 0 to 15
possible command syntax: CONT:AUX:C 1
•
NAN
(Not A Number) 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 appropriate tolerance
values.
•
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. On the ZVL, either the short form or the long form are
allowed; mixed forms will generally not be recognized. The instrument itself does not
distinguish upper case and lower case characters.
•
Special characters
•
|
A vertical stroke in the parameter list characterizes alternative parameter settings. Only one of the
parameters separated by | must be selected.
•
Example:
The following command has two alternative settings:
FORMat[:DATA] ASCii | REAL
•
[ ]
Key words in square brackets can be omitted when composing the command header (see
SCPI
Command Structure and Syntax
). 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 entered in the command or omitted.
•
{ }
Braces or curly brackets enclose one or more parameters that may be included zero or more
times.
•
Numeric suffixes
Symbols in angular brackets (
<Ch>, <Chn>, <Mk>,...
) denote numeric suffixes. Numeric
suffixes 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.
The marker suffix must be in the range between 1 and 10, the number of ports depends
on the analyzer model. No restrictions apply to channel, trace, and diagram area suffixes.
In remote control, one active trace can be selected for each channel; see
Active Traces in
Remote Control
. This concept simplifies the remote control command syntax, because it
allows the active trace in a particular channel to be referenced by means of the channel
suffix. To keep the syntax transparent, <Ch> is used for channel settings (it denotes the
configured channel), whereas <Chn> is used for trace settings (it denotes the active trace
in the channel).
