On Feb 10, 15:21, Tony Duell wrote:
> > It's a pain to make proper AUI cables, but if they're short, you can
use
>
> But IMHO less of a pain than tracing faults cause by so-called AUI cables
> that are nothing of the sort!
<grin> No other comment neccessary or desired.
> > lower-quality cable. It's multiple coax inside. You should be able to
>
> Is it? The drop cable I got was 4 twisted pairs. A thicker one for the
> power connections and 3 more for the Tx, Rx, Collision pairs. With an
> overall foil screen.
Hmm... I was about to say that's one of the cheaper office-type cables.
I'd forgotten that the cables are actually four individually screened
twisted pairs plus a pair for power. But if yours is only a single overall
screen, then it's not full-spec AUI, which is thick, about 1cm diameter or
a little more, very unwieldy, and bright blue. Not that it matters if it
works -- the only difference between office-rated cables and the full-spec
ones is that the office-spec is limited to a maximum of 12m (possibly less
for some makes) while the full-spec is rated to 50m. It does mean that for
some applications, office-spec won't do; for example if you use an AUI
concentrator (the best-known being a DELNI) that isn't a repeater and it
has an equivalent cable length which is quite long (15m ?), so you have to
be careful about the length of office cables you attach to it.
> Finding the proper cable in short lengths (i.e. not a 100m reel) is the
> hard part. Soldering up the DA15 connectors is pretty easy.
The best way is to find a long blue AUI cable and cut it up. For some
reason, I find long ones are more common than short ones.
--
Pete Peter Turnbull
Network Manager
University of York
Received on Sun Feb 10 2002 - 15:05:54 GMT