Re: mystery dac
- From: "neil" <a@xxxxx>
- Date: Tue, 11 Apr 2006 22:23:31 GMT
"John Larkin" <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:25il32pid480oc9lcgmm7pg020nh4atehc@xxxxxxxxxx
I'm trying to reverse-engineer, or at least understand, an old hunk ofJohn,
military electronics, part of an aircraft heads-up display. One part
on the schematic seems to be a 12-bit DAC with internal data latches.
The part number seems to be DAC871 or possibly DAC671; it's a bad scan
of a bad Xerox. Heck, there's a chance it's a DAC571.
It looks like a 24-pin package with D0..D11 on pins 1..12
respectively, and D0 looks to be the MSB!
The board was designed by GEC Avionics Ltd, so the dac may be furrin.
No luck so far from the usual suspects. Anybody got any leads on what
this might be?
John
I work for BAE Systems, that was GEC Avionics Ltd.
Not directly with the HUD guys, but at Rochester UK where many are made.
If you'd like to send on any info you have about the hunk, ideally the GEC
part number, possibly of the format 7914-00132, then I'll check with our
drawing library to see if there's anything stored. Should be available
since we support stuff thats 40 years old. If you have the schematic, maybe
there's a number on that?
Mail me as neil ddot chatfield att baesystems dottt com ...
hth
Neil
.
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