Bitsavers has some manuals for 1630 and 1650. Maybe those will give you enough info to be useful?
Sent from my Dec Alphastation 200 > On Nov 7, 2024, at 13:49, Sytse van Slooten via cctalk > <cctalk@classiccmp.org> wrote: > > Yeah I saw that, but I'm a bit reluctant to blindly pay USD 50 for something > that might not even have any detail on what I'm looking for. After all, I > don't need a full manual, and certainly not a collector-worthy copy. I just > need this specific information. > >> On 7 Nov 2024, at 22:30, Wayne S <wayne.su...@hotmail.com> wrote: >> >> There are some available on ebay. Just search “hp 2640b” >> >> Sent from my Dec Alphastation 200. >> >>>> On Nov 7, 2024, at 11:41, Sytse van Slooten via cctalk >>>> <cctalk@classiccmp.org> wrote: >>> >>> 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 >