AnsweredAssumed Answered

vrf IVI-COM and VEE

Question asked by VRFuser on Nov 11, 2003
"Hal Cornelius" <halc@quixnet.net> wrote...
>I am starting to check out IVI-COM.  I see that Tek has IVI-COM software and
>Agilent also has IVI-COM software.  My gut reaction is that I only need to
>install the IVI-COM (and associated shared components) from Agilent to use
>it in VEE.  Will this allow me to use my Tektronix test equipment?  Or do I
>need to install the Tek IVI-COM software?
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      The "shared components" are supposed to be identical, so you should
only need to install them once.  However, each device you want to talk to
has its own IVI-COM components, so you still need to install the Tek IVI-COM
driver for your particular device(s).
      I'm not quite sure how to do it in VEE, but in general, you'll open a
reference to the driver object.  IVI-COM drivers typically have two
interfaces--a class-compliant interface (that's the same for all Scopes, for
example), and an instrument-specific interface (which might be completely
different from scope driver to scope driver).  You'll access your driver
object through one of those interfaces and find all the low-level properties
and methods that way.  For the most part, you'll find a one-to-one
correspondence between these properties and methods and the SCPI commands
that your instrument understands.  (At least, that's the way it looks in the
Tek IVI-COM drivers I've seen.)
      I hope this helps.

Brian Powell
LabVIEW R&D
National Instruments Corp.


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