AVR-Chat

RS422 driver ought to do it. If its old, it probably has a
75176 or variant. They are a somewhat "heavier" load than
most modern receivers. If the line length is fairly short
(say, up to 25' or so), you don't need to terminate it
quite so carefully. There is no real compatibility problem
with newer drivers (ie, MAX485) and older receivers.

I would connect commons (if not connected thru coax shield)
and the digital pair.

Jim


On Fri, 22 Oct 2004 19:15:23 +0100
 "Doug Locke" <doug@whiteapple.u-net.com> wrote:
> 
> Hello, wonder if someone could point me in the right
> direction regarding an
> old line scan camera that I am attempting to control
> using an AVR. The
> camera supply is +5v and +15v. Basic point is that the
> data rate and line
> rate signals are just specified as differential line
> driver signals and
> shown as having a +ve and -ve connection and a comment is
> made that for slow
> speed access the -ve pin could be biased with +1v and a
> TTL signal applied
> to the +ve pin. Would I be okay in using a JK flip flop
> wired to toggle and
> use the Q, Q bar outputs,  maybe just connect each pin to
> the AVR and toggle
> the lines or should I use say a RS422 driver,. Afraid
> that I have no
> experience of differential line drivers and appreciate
> any help in this
> area.
> Doug.
> 
> 
> 
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