Remote Control
R&S
®
NRT2
180
User Manual 1178.5550.02 ─ 04
SYSTem:LOCK:OWNer:DETailed?
Returns the current owner(s) of the locking, including all locking details. In case of
shared locking, each interface is listed only once. If there is additionally an exclusive
lock, only the owner of the exclusive lock is returned.
Return values:
<owner>
Usage:
Query only
SYSTem:LOCK:RELease
Releases a locking if the caling client is the owner of the locking. If no locking is active
or the calling client ist not the owner of the locking, nothing happpens.
In case of an active shared locking, the device is locked until all members of the
shared locking group have released the locking.
Usage:
Event
SYSTem:LOCK:RELease:ALL
Releases all locking of the calling client.
Usage:
Event
SYSTem:LOCK:REQuest:SHARed?
<lock_string>[, <timeout>]
This query tries to initiate a shared locking. A lock string must be specified. If success-
ful, the actual lock string of this locking group is returned, otherwise 0.
Query parameters:
<lock_string>
<timeout>
Return values:
<result>
Usage:
Query only
SYSTem:LOCK:REQuest[:EXCLusive]?
[<timeout>]
This query attempts to initiate an exclusive locking. If successful, 1 is returned, other-
wise 0.
Optionally, a timeout in milliseconds can be specified, specifying the maximum time to
wait for the device to become free if a locking is already active.
The owner of an exclusive locking can call
SYST:LOCK:REQ?
even if an exclusive lock
already exists. However,
SYST:LOCK:REL
must be called just as often until the device
is released again.
SYSTem
