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vrf IVI-COM and VEE

Question asked by VRFuser on Nov 11, 2003
"Hal Cornelius" <> 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?
      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
National Instruments Corp.

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