EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: jogri on August 03, 2020, 08:07:23 pm
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Hi guys,
i am searching for pictures (schematics would be even better, but i doubt that they're available) of a Toellner TOE 8840/50 PSU that has either the analog, RS 232 or GPIB option. I have a unit (custom 8852, 40V@4A) without any options and i would like to control it either via a PC directly or via a DAC output of my 34970A.
I've taken a peak inside the PSU, all PCBs are fully populated but i couldn't determine where the leads for the analog/digital (232/GPIB) outputs should be attached (hence the need for pictures of a unit that has those options). This bears the question if Toellner uses separate PCBs and extension boards for units that have those options or if i'm just too dumb to find the attachment points.
I've attached a few pictures of my unit, you can see that it has three "extension cards" (two in the front and one between a transformer and the fan, since the ones in the front have 12bit ADCs i assume that those are the control boards for the two channels, but don't ask me what the little board in the back does)