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ZVT Command Reference
SCPI Command Reference
Operating Manual 1145.1084.12 – 30 984
 After a CLEar [ALL] or after the last restricted group has been dissolved, only group 1 exists and
is unrestricted (i.e. consists of all available ports)
<Ch>
Channel number.
<group_no>
Port group number. If unspecified the numeric suffix is set to 1.
Range [def.
unit]
Range according to the current port groups (SOURce<Ch>:GROup<group_no>). If
an unassigned port group number is used, the analyzer generates an error
message. Exception: Parameter ALL, see below. [–]
ALL
If ALL is specified, all port groups except group 1 are dissolved and all available
ports are assigned to port group 1; the <group_no> suffix is ignored. If ALL is
omitted, only the specified port group is dissolved.
SCPI,
Command
Types
Device-specific, no query
Example:
See SOURce<Ch>:GROup<group_no>.
SOURce<Ch>:GROup<group_no>:COUNt?
Queries the number of port groups in channel no. <Ch>.
<Ch>
Channel number.
<group_no>
Port group number. This suffix is ignored, because the command returns the
number of all port groups.
Range [def.
unit]
Port groups must contain at least one logical port and must not overlap, so the
maximum number of port groups for an n-port analyzer is n. [–]
Note: Port group no 1 is always present and can not be dissolved. After a *RST or
after SOURce<Ch>:GROup<group_no>:CLEar ALL, port group no. 1 contains
all ports of the analyzer.
SCPI,
Command
Types
Device-specific, query only
Example:
See SOURce<Ch>:GROup<group_no>
SOURce<Ch>:GROup<group_no>:PORTs <log_port1>{,<log_port2> ...}
Defines a port group containing an arbitrary selection of logical ports. The ports do not have to be
numbered continuously (as for port groups defined via SOURce<Ch>:GROup<group_no>
<log_port1>,<log_port2>).
It is not possible to create more than one port group with arbitrary ports. To avoid errors, use the
setting command only while the channel contains a single port group (e.g. after a *RST). You can use
SOURce<Ch>:GROup<group_no>:PORTs? to query the ports for a port group created via
SOURce<Ch>:GROup<group_no>.