It seems that my documentation is lost, I'm too old , and Company who made the p.c.b is no longer around, I think because web site domain is for sale.
The p.c.b is a p.w.m input to analog 0-10 volt output.
Web page silk is screened on board says "www.kdntool.com   DCNC/VFD/OPTO REV1".

If someone has a schematic for this p.c.p could you please email it to me?
With thanks,
Bill Phillips , Surrey Canada
docslip@telus.net
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I'm giving my converted Grip1340 G ball-screw converted lathe to a friend whom I was unable to convert to linuxcnc. He's a Mach lover.

Attached 1 only photo of the obsolete item described.

The photo did not upload, can you try again. You can edit the post and add the picture or just do a new post.

Thank you Graham , I'll try to upload photo again here.
Bill Phillips

Is this for a DC servo?  It may be simpler and cheaper to replace the amplifier with a DC servo driver.

Arturo Duncan
https://cnc4pc.com

I have used these before :-

https://www.ebay.co.uk/itm/354404118126?itmmeta=01HYY1ZF753C7R64NQM3KBY6VC&hash=item528421ae6e:g:dywAAOSwb59d33xi&itmprp=enc%3AAQAJAAAAwOKelbt%2FVykByfPMZi1NcmtXPnTAiif9%2FhCNnHRCoJ7Ze72Wc5zZEbgR8EBlVVm4BQzO3sV5shAMT0rQD2E3JfATaAvl1e7eZqTW%2BY7oU2tenS2BOc5NZ7aagEX%2FKFaGMOQ%2By%2B24IaKnyrX8qwZ1H4smn0%2BlmmpZUhVSTeoaJMZ7O3Qcsfu0t%2BaUwyWnJjWDOp3ZwFsYlyzsEt0%2Fk%2F3baTNajm3LRY08PuNZm8meYTV9qvbDrp4EkuH9%2FGIsQXE8hQ%3D%3D%7Ctkp%3ABk9SR-7z_cH3Yw