Agilent Technologies ESA-E Series Programmer's Manual page 308

Language Reference
SYSTem Subsystem
A license key is a 12-character hexadecimal string
given with the option . The license key is unique to a
specific option installed in the instrument with a
specific host ID, as returned by : SYST : HID? . The
license key must be enclosed in quotes .
Front Panel
Access:
System, Licensin g
Delete a License Key
SYSTem : LIMY :DELete <"option" >
This command allows you to delete the license key from instrumen t
memory for the selected option .
NOTE In general, deleting the license key number is not recommended . If the
license key is deleted, you will be unable to reload or update the
application in instrument memory without re-entering the license key.
The license key works with one particular instrument host ID only.
Example :
:SYST :LKEY :DEL "BAC "
Remarks : In the example above, BAC is the part of the comman d
that describes the option . An option is a three-characte r
string that specifies the option or application to be
installed as found in the Ordering Guide (for example ,
BAH for GSM Measurement Personality) . The option
name must be enclosed in quotes .
Query Instrument Options
SYSTem:OPTions ?
Returns a list of the options that are installed .
It is a comma separated list such as : "1DS,1D6,A4H,A4J, 1DN"
Front Panel
Access:
System, Show Syste m
Power On Elapsed Time
SYSTem :PON :ETIMe?
Returns the number of seconds that have elapsed since the analyze r
was turned on for the very first time .
Front Panel
Access :
System, Show Syste m
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