Update: I'm in talks now with a Keithley AE who has verified that the 220 is so old that it's from a time before SCPI, when dinosaurs roamed the earth. The manual indeed implements an example using HP BASIC as an abstraction of the device commands.
He will try to put together some code using a...
Re multiple requests: yes.
I'm not sure anymore at what point remote becomes enabled, because I was testing *IDN? without thinking about anything else at that moment. It might be that any query I sent enabled remote mode, because after I had tested *IDN? I was testing other commands that were...
Actually, I'm using the Keithley 220 programming manual I found here, not the instruction manual you linked; that one doesn't say much about programming, it just references this other one.
The only code that works for me is the one you asked about, *IDN?; none of the other standard IEEE codes...
Thanks for the reply! I figured it might be worth asking the question, even if it's a long shot.
I'll be somewhat verbose in case knowing the path I've already taken ends up being useful for future posterity.
You are correct about the GPIB limit, but that's fine by me as long as I have the...