It looks like this is a driver that Tektronix wrote and donated to the
Instrument Driver library. The VIs on the palette are a mix of
examples and instrument driver VIs, and the examples hard-code the
GPIB address. (The instrument driver VIs have the white background on
the icon, and the examples have a gray background.)
So, if you are interested in using one of the examples in your
application, I would make a copy of just that example VI. Be sure to
rename the VI when you make a copy. (E.g., My TEK 278X.vi.
Otherwise, since LabVIEW only allows one VI of the same name in memory
at a time, your application might link to the original VI in
instr.lib.) Ensure that all of your VIs reference the new copy, and
not the VI with the original name in instr.lib.
In these examples, it appears that there's a string constant on the
diagram that you just need to change from 1 to whatever your GPIB
address is.
I hope this helps.
Brian
