R&S
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ZVA / R&S
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ZVB / R&S
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ZVT Command Reference
Common Commands
Operating Manual 1145.1084.12 – 30 608
such as division by zero. As defined in the SCPI standard, NAN is represented as 9.91 E
37.
3. 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 ZVA, 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
1. | 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
2. [ ] 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 used in some application contexts,
omitted in others.
3. { } 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).
Common Commands
Common commands are described in the IEEE 488.2 (IEC 625-2) standard. These commands have the
same effect on different devices. The headers of these commands consist of "*" followed by three letters.
Many common commands are related to the status reporting system.
CLear Status, no query
Sets the status byte (STB), the standard event register (ESR) and the EVENt -part of the QUEStionable
and the OPERation registers to zero. The command does not alter the mask and transition parts of the
registers. It clears the output buffer and the tooltip for remote error messages.
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