Hi all,

I have a HP 1640B that I'm trying to get to work. However I can't find any 
information about it, and while the machine itself it straightforward enough 
(and I remember enough from when I was using it in my first dayjob) I can not 
find anything about how to use the GPIB interface that it has.

The reason I'm interested is, we've finally managed to add GPIB support to the 
PDP2011-MINC fpga implementation, and I'd like to test against a different 
target than the relatively modern Philips/Fluke counter I'm now using. And the 
1640B is the only other GPIB instrument I have...

The HP doesn't seem to know the ID? command (that causes an error message on 
the screen). It does respond to a newline (the standard 
is-this-listener-present test that the MINC code implements), so at least 
something is working.

Does anyone here have any docs on the HP 1640B? It'd be very helpful at least 
to know which GPIB commands are implemented.

thanks in advance!

Sytse

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