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Modems - RF Cafe Forums
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| Koos
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Post subject: Modems
Posted: Fri Dec 11, 2009 3:21 am
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Joined: Wed Sep 30, 2009
2:26 am
Posts: 6 |
I have a network with radyne satellite modems and
Celtro compression equipment connected. There is
one HUB with a DMT 4000 and 8 remote sites with
DMT 1000 Celtro units. Some of the ciruits works
fine, but one or two will work for about a week
and then fail and also affect the working sites.
It looks like the buffer one one of the sites
fills up and causes a failure. I have changed
the modems but the problem persists. Do you
have any suggestions to what the problem might be.
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maxwell |
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Post subject: Re: Modems
Posted: Fri Dec 18, 2009 12:16 pm
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| Captain |
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Joined: Mon Sep 01, 2003
6:59 pm
Posts: 22
Location: Boston
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A simple question (maybe too simple): Have you verified
that the software/firmware versions of the buffer-filled
models are the same as the ones that work properly?
Unless you swapped the bad ones with the ones that
do not fail in operation (not just from a test bench),
it is possible that the replacements have the same
software/firmware as what they are replacing. If
versions are inconsistent, it might even be an older
version that is working correctly, so don't just
assume the newer code is better.
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Posted 11/12/2012
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