31 Aug
2011
31 Aug
'11
2:43 p.m.
On 31/08/2011 10:18, Rob Jarratt wrote:
I forgot to mention that I did find that my RD53 was
configured as DS3 and
changed it to DS1 (numbering from 1-4, not 0-3), but that made no
difference. I tried swapping the jumper on the M9058 from the factory
setting of TP1-TP2 to TP2-TP3, but it made no difference. Is that the jumper
you mean?
No, I don't think so. I can't remember what that does, but thre are
lots of links. They might not be jumpers in the usual sense; they might
be tracks to cut/join on the PCB or wire links. Anytway, if you have
any sort of ohmmeter or continuity tester, it's east to see if what I
described is set up: check for continuity between pins 26 and 32 on each
of J1...J4. If your continuity tester isn't safe for use on logic
circuits, just disconnect the M9058, which is probably going to be
necessary to get at the pins anyway.
Mentioning DS3 reminds me: I think that's the normal setting for an
M9058 setup.
I don't know if it helps much, but there are some diagrams and notes at
http://www.dunnington.u-net.com/public/RQDX/ (the .ps files are just
the original PostScript from which the PDFs were created).
Does the RD53 have a terminator resistor pack in it?
--
Pete Peter Turnbull
Network Manager
University of York