4 System
4.7 Licensing
exists and is checked out from a server. Note that querying a license that is local to
the instrument (-xFP or -xTP) also returns 0, even though the license exists and is
valid, because it does not require a check-out. Also, querying a license that does not
exist returns 0.
Remote
Command
:SYSTem:LKEY:COUT? <feature>
Example
:SYST:LKEY:COUT? "N9080EM0E"
1
Notes <”OptionInfo”> contains the feature and the version. You must specify the feature but can omit the
version. If you omit the version, the system regards it as the latest one
Return Value:
0 if not checked out, 1 if checked out
4.7.4.4 List Licenses Checked Out (Remote Query Only)
Lists the licenses checked out from a server. Since network served licenses may not
always be available when there are limited licenses available compared to the
desired number of users, the features available on an instrument can vary. Use this
query to see which features are currently checked-out to the instrument.
Remote Command
:SYSTem:LKEY:COUT:LIST?
Example
:SYST:LKEY:COUT:LIST?
#284
N9073EM0E,2018.0831
N9077EM0E,2018.0831
N9080EM0E,2018.0831
N9081EM0E,2018.0831
4.7.4.5 Borrowed Network Licenses
Network licenses can be borrowed from the network license server for a time. The
maximum amount of time a license can be borrowed is specified in the license
installed on the server and is set at the time the license is generated by Keysight. As
part of the borrow operation, you specify how long to borrow the license. This
borrow period is in hours and can be any time up to the maximum allowed by the
license. Once borrowed, the license appears as a local license and can be used even
when not connected to the network, and the instrument software treats them the
same as other time-based licenses that are installed on the instrument. This means
the licenses are validated when the instrument is started and then are used without
the overhead of checking them out and back in when switching Modes. At the time
of the borrow, a time is specified for how long the license will be borrowed. When
that time expires, the license is automatically returned to the network license server
2181 Spectrum Analyzer Mode User's &Programmer's Reference