Re: Looking for comments on the 15-pin ethernet connector


Steven P. Donegan (ccicpg!turnkey!stanton!donegan@uunet.uu.net)
16 Jun 88 13:03:16 GMT


In article <8806150602.AA11768@atom.hpl.hp.com>, robert@ATOM.HPL.HP.COM (Robert Michaels) writes:
>
> > The stupid little stamped sheet metal clips are simply not strong
> >enough to secure a connector with a big fat, heavy, and fairly stiff
> >tranciever cable on it. As long as the cable is secured so if can't move if
> >accidentally moved, it's OK. For example, on the tranciever ends, we lash
> >the cable to the main ethernet trunk cable with 2 (or sometimes 3) wire ties
> >a few inches away. But on systems which might move a little (like a deskside
> >Sun on wheels), or in situations where the cable might be disturbed (like
> >hanging off the back of a desk) forget it.
> >
> > What was wrong with good-old RS-232-style screws? Or, if they really
>
> To me the problem is that the little clips are "standard". I would be very
> surprised if a vendor will have enough courage to promote something more
> effective. To alleviate your problem you could try using a lighter weight
>
> - Robert Michaels
> HP Labs

Our experience has shown the vendors we deal with to be very flexible. TCL and
Bridge Communications have both agreed to sell us 'positive attachment' cables
and interfaces (on the server and the transceiver). I really liked Bridges
naming this option as 'positive attachment' :-)))

The original transceiver cables used a cast slide rather than a stamped sheet
metal slide - the casting was much thicker and did provide a somewhat firmer
connection.

Every cable, transceiver, server and multiport fan-out that we have used at
WD have been possible to convert to screw-downs. The hardest to convert so far
was the BICC multiport fan-out; this was due to their extreme use of shielding
and screws to hold the unit together - it takes about 20-30 minutes and a
large amount of patience to convert this unit. The results are worth the effort.

--
Steven P. Donegan
Sr. Telecommunications Analyst
Western	Digital	Corp.
donegan@stanton.TCC.COM



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