Where do you find them? EBay was dry. All I really want to do is print
the screen contents, not control anything in the lab.
Make sure you don't already have this capability.
My TEK scope has a menu buried in the menus that will print
a bitmap graphic of the screen out the serial port.
I won't call it GPIB, 'cause it's not anywhere near a GPIB
implementation. But if all you want is to send/receive
simple commands to a single GPIB instrument via a serial port,
you can do it with
a PIC processor and a couple of level translators for the serial port.
No part of it complies fully with ANY spec. Stated another way,
it VIOLATES EVERY spec. But it works for me.
Built it specifically to create an on-screen demo of a TEK TDS540
that I was trying to sell at a swapmeet. I set out to write a
Visual Basic Class module with the same API as the National Instruments
GPIB drivers, but don't remember what happened with that. Got bored
and moved on to something else.