R&S ZVB - Page 599

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Remote Control
Messages
Operating Manual 1145.1084.12 – 30 584
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: 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: TRIG:SOUR EXT;:TRIG:TIM 0.1
This command line is represented in its full length and contains two commands separated from each other
by the semicolon. Both commands are part of the TRIGger command system, i.e. they have one level in
common.
When abbreviating the command line, the second command begins with the level below TRIG. The colon
after the semicolon is omitted. The abbreviated form of the command line reads as follows:
TRIG:SOUR EXT; TIM 0.1
However, a new command line always begins with the complete path.