Sidecar relay port issue

[Jon Stratis]

Originally Posted by xisybyl

I second that. We had the same problem (using LabVIEW) and it was solved only by using a KNOWN GOOD flat cable. I don't know why the 2 round cables we tried (they checked out good) didn't work, but . . .

Re flat cables, either purchase one preassembled or have it assembled using the proper tooling (using a vise doesn't cut it).

To expand on the part I highlighted here... most vices in machine shops are wavy - where it grips your part, it's not a flat steel plate. That's a specific design so it can adequately grip a wide variety of items. Flat plates won't hold round stock very well, for example.

There are vices available (and we have some at work here) that are completely flat, and allow fine adjustment. Those are the type you want to use if you're assembling a cable! You need to provide a constant pressure along the entire length/width of the connector, and have fine enough control over how much its tightened to prevent you from snapping off the locking tabs on the sides.