Agilent 6612C "Opt 760" board

[gamalot]

Today I took my 6612C apart and did some cleaning. I also took some pictures for those who are curious about what the "Opt 760 Isolation and Reversal relays" board looks like.

[guenthert]

Iiuc, the 6612C (and 6632B) service manual refers to it as
"A6 5063-3434 1 Relay Board (Optional)".  Sadly, no further hints.

Is a schematic available?

[gamalot]

Iiuc, the 6612C (and 6632B) service manual refers to it as
"A6 5063-3434 1 Relay Board (Optional)".  Sadly, no further hints.

Is a schematic available?

Yes, I just found it! 

[gamalot]

It's hidden in the 6632B's service manual.

[Swake]

Links to the open source version of this board made by Bateau020 for 6632B power supplies (and some others):
https://www.eevblog.com/forum/testgear/agilent-6632b-binding-posts/msg4466458/#msg4466458
https://github.com/hb020/HP6632B_relay_board

Also front binding posts with additional sense and ground.
https://github.com/hb020/HP6632B_binding_post:

[gamalot]

Links to the open source version of this board made by Bateau020 for 6632B power supplies (and some others):
https://www.eevblog.com/forum/testgear/agilent-6632b-binding-posts/msg4466458/#msg4466458
https://github.com/hb020/HP6632B_relay_board

Also front binding posts with additional sense and ground.
https://github.com/hb020/HP6632B_binding_post:

This design seems to have been simplified so that it is only compatible with 66xxB and will not work with 661xC.

[gamalot]

I removed the two larger relays from the board to get more layout details under them, and I noticed that the silkscreen of the relays' outline actually covered part of the guard rings. 

[gamalot]

I have made some progress on opt-760 clone, schematic diagram, gerber files, and BOM are attached.