R&S ZVL
Remote Control
Messages
Operating Manual 1303.6580.32-05
323
An optional mnemonic must not be omitted if its effect is additionally specified by a numeric
suffix.
Long and short form
The key words feature a long form and a short form. Either the short form or the long form can be
entered; other abbreviations are not permitted.
Example:
TRIGger:SOURce EXTernal
TRIG:SOUR EXT
The short form is marked by upper case letters, the long form corresponds to the complete
word. Upper case and lower case notation only serves to distinguish the two forms in the
manual, the instrument itself is case-insensitive.
Parameters
Parameters must be separated from the header by a "white space". If several parameters are
specified in a command, they are separated by a comma ",". For a description of the parameter
types, refer to section Parameters.
Example:
SOURce:GROup 1,1
This command defines a group of measured ports.
Numeric suffix
If a device features several functions or features of the same kind, e.g. several channels or test
ports, the desired function can be selected by a suffix added to the command. Entries without
suffix are interpreted like entries with the suffix 1.
Example:
SOURce:GROup2 1,1
This command defines a second group (group no 2) of measured ports.
Structure of a Command Line
A command line may consist of one or several commands. It is terminated by a <New Line>, a <New
Line> with EOI or an EOI together with the last data byte. Visual BASIC automatically produces an EOI
together with the last data byte.
Several commands in a command line must be separated by a semicolon ";". If the next command
belongs to a different command system, the semicolon is followed by a colon.
Example:
CALL IBWRT(device%, "TRIGger:SOURce EXTernal;:SENSe:FREQuency:STARt
1GHZ")
This command line contains two commands. The first command belongs to the
TRIGger
system and
defines the trigger source (external trigger). The second command belongs to the
SENSe
system and
defines the start frequency of the sweep.
If the successive commands belong to the same system, having one or several levels in common, the
command line can be abbreviated. To this end, the second command after the semicolon starts with the
level that lies below the common levels. The colon following the semicolon must be omitted in this case.
Example:
CALL IBWRT(device%, "TRIG:SOUR EXT;:TRIG:TIM 0.1")
