Neven
I suspect that you have already thought of building your own
device so you’re looking for something commercial. I’ve used a couple of
converters. Serial to light, Can bus to light etc, and the work nicely except
they have their own EMC signature that you have to worry about. They are at
least stable and can be identified. I usually put a caveat on the purchase
however, If I put them in the chamber and they make more noise that I want
they go back. Most of the manufactures don’t quite understand what the heck
we are trying to do. They will tell you it is compliant with some limit or
other but don’t understand the use as a lab device in order to measure the
thing of interest.
There are lots out there and I’ll just give you the link of the
one I happen to have in this lab www.eks-eng-engle.de
<http://www.eks-eng-engle.de/> . Not sure how adaptive this would be if
you’re trying to just convert the single signal but it might lead to
something you can use more readily
Gary
________________________________
From: Neven Pischl [mailto:[email protected]]
Sent: Wednesday, August 25, 2010 5:20 PM
To: [email protected]
Subject: [PSES] fiber-optic converter for DUT monitoring - any suggsetions?
Hello all,
I have a DUT that can output a 3.3V digital signal indicating its status
during the radiated and conducted immunity tests. The signal frequency can
vary from DC to a couple of MHz, depending on the DUT status and number of
errors. Steady 0V means everything is fine, steady 3.3V means it stopped
working (data link is down), each error sends one pulse (till there are too
many errors so it does not work any more).
I would like to convert it to optical signal, then on the other end of the
fiber link I'd like to convert it back to electrical signal for DUT-monitoring
purposes.
Does anyone have a recommendation what components to use? Or manufacturer,
part numbers, App Notes, ready schematics and list of materials, anything of
that sort to point me in the right direction.
Thanks, Neven
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