Hi
I have edited this post because I have made a new version 2.0 of the GPIB breakout board. I have scrapped the version 1.0 boards.
The version 2.0 has the termination network required by HP for digital inputs. The resistors and capacitors on each signal line are SMD fitted between the pins of the headers. These pins provide some physical protection for the components to stop them getting knocked off. The capacitor/resistor are stacked to keep the pcb design simple and neat. There are 3 smd components but it looks like only 2 in the photos.
This breakout board allows direct connection to an HP logic analyser, I don't have, or my HP54645D oscilloscope.
The other header provides direct connection to all of the raw GPIB signals. This allows for an adapter to be made for another instrument that is not an HP.
I have shared my version 2.0 GPIB breakout board on PCBway here:
https://www.pcbway.com/project/shareproject/GPIB_Break_Out_Board_f7812b3e.htmlI have made the first two version2.0 GPIB breakout boards.
I only need one breakout board and I have a bag of parts I don't need. I could make up a kit set to sell if there is any interest.