
Software Installation and Configuration 2
L4400 User’s Guide 27
Select (highlight) instrument
Select Interactive IO
Figure 2-11. Selecting an Instrument and Starting Interactive IO.
Identifying the Instruments
L4400 series instruments are comprised of the carrier, the instrument
sub- assembly, and on selected instruments, a wiring terminal block. The
carrier and instrument sub- assembly have separate serial numbers and
separate firmware revisions. The commands used to query these
parameters are:
• *ID
N? (returns the carrier serial number and firmware revision)
• SYS
Tem:CTYPe? 1 (returns the instrument sub- assembly serial
number and firmware revision)
• SYS
Tem:CDEScription? 1 (returns the instrument description.)
These commands can be executed from the Interactive IO window.
Exa
mples of the information returned by each command are as follows:
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