I'm not sure HP 28685B are still available.  However, on those, you need to
have both "SQE Test" and "Link Beat" set to "Enable" or "On".  Then,
"Loopback test" must set to "Disable" or "Off".  As for "Long cable", I
don't remember what was the max cable length before needing it enabled.

As far as I remember, no matter which transceiver brand you use, "SQE Test"
MUST be enabled/on EXCEPT if transceiver is connected to a HUB or Switch AUI
port.  Not doing so on an HP3000 may cause some performance issues.

Hope this will help !
--
=========================================
Denis  (Remove "removeit." from email address)
=========================================
"Tracy Pierce" <[log in to unmask]> wrote in message
news:mYudnbwr58nmvTmjXTWcoQ@fidnet.com...
> Gentle listers,
>
> I've finally clipped the last serial device from our DTC; now I'd like to
> eliminate use of the BNC connectors on our 937 & 957 MFIO cards, as 99% of
> our network gear uses Ethertwist (RJ45 connectors on cat5, & gosh I hope
the
> terminology's correct!).  I read the -L archives re "Transceiver" & "AUI"
so
> I think I have a bit of the nec info, but would like to check a couple
> things:
>
> We're using (only) the 'standard' MFIO card, can't see the part# but it's
> "SCSI/CONSOLE/LAN (10MBPS)"
>
> 1) is "HP28685B aka A2671A 'HP Ethertwist Transceiver'" the correct
> transceiver?
>
> 2) does 1) come with the retainer clip I'll undoubtedly need?
>
> 3) I understand there are 4 jumpers on 1); how do I set 'em?
> SQE test
> Link Beat
> LoopbackTest
> LongCable
>
> 4) (extra credit ;-) Are there 3rd party transceivers that will work?
Seems
> there might even be a magic box that would convert ThinLan BNC into
> Ethertwist, which would save me the reboot needed for the MFIO jumper
> changes.
>
> 5) (REAL credit!) Who's got 'em for sale cheap?
>
> TIA
>
> Tracy Pierce
> Golden Gate Bridge
>
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