[GreenKeys] Use of Volpe Board

[Ken Wiebe]

I asked Jordan this question but he wasn't sure. I asked it in a slightly different way, but here goes:

Would it be fair to compare the Volpe board to many of the other current loop-to-serial adapters, except that the Volpe board uses USB instead of RS-232?

I have a little experience hooking up a 33 and a 35 to computers using the more traditional RS-232 serial ports on the computer side.

I realize the Volpe board has added functionality (which is one reason it interests me). But since the TTY side of the Volpe board looks (to me) just like the TTY side of the current loop/RS-232 adapters, my assumption is that it can be used in the same way.

What is prompting this question is that the Volpe board doesn't seem to be "marketed" as this type of device, and also the stated limitation that it does not provide its own loop current.

So here's the crux of my question: Let's say I hooked up the Volpe board directly to a model 33 - one pair to TTY send and the other pair to TTY receive. Would all the pieces be there to tx/rx to a USB-connected computer?

If not, I guess that means that the current loop/RS-232 circuits I've been using thus far somehow inject current into the TTY side (?)

What would I need to add to make the Volpe board work in this scenario?
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