HP-97S PRODICAL Digital Micrometer

[sleibson]

The tan muffler was originally the case for a 9815A I/O card. It's a BCD interface muffler from all appearances, which makes sense since we're dealing with simple numeric data here and an HP97S came with a BCD interface, using the 9815A muffler as a backfit. The micrometer has a numeric display so the data is clearly available as BCD info, which swims down the coil cord into the big kludge of an I/O box. I'm guessing the little gray box is a level translator and a serial-to-parallel BCD converter and latch to make the scanned micrometer digits available in parallel to the 97S BCD interface box. What a great lashup.

--Steve

(02-05-2016 07:35 AM)Katie Wasserman Wrote:  That's an interesting item!

How does the communication work - software wise - between the 97s and the micrometer. Do you set one of the user flags to indicate that the micrometer should feed a measurement to the 97s?

What sort of electronics are in the box that's between the i/o pod connector and the micrometer?