Wild_Bill wrote:

Yep, that Kestra box in the auction is the one I'm attempting to decipher.
Several aspects seem weird about it, although they probably aren't big
hurdles.
The 3 power supplies seems goofy.


Not really. There are lot of wideband op amps used in video
equipment that require a split rail to allow the video to hit zero volts
at the sync tips. and a +5 or +3.3 volt rail to power the control logic
is neccesary, to isolate the noise on the rail from the video. There
may be LDO regulators or for each camera, which would be why you can't
find anything on the 12 pin conectors. On the other hand, the cameras
it was made for may be line powered, or have other power requirements
provided by individual CCUs. It looks like you not only need a manual
but possibly software, or other equipment to use this item. On the
other hand, the maxim data sheets & application notes are good enough to
reverse engineer from.


--
You can't have a sense of humor, if you have no sense!