10Base-FL - test-drb@ccmp.vtda.org

9 Feb 2002

On Feb 9, 16:29, Robert Schaefer wrote:

...
  Interesting.  I don't know too much about the kit
I have (I would
 desperately love info on the raylan fiber concentrator &| it's SNMP card)
 but from what I did see it's pretty standard 10bFL.  The tranceivers are
 `ORnet FIBER OPTIC TRANCEIVER' by chipcom.  Model 9301T-ST, about 4" x 4"
x
...
  2", and every bit of a pound and a half.  when I
connected the tranceiver to
...
  the concentrator, the diag led on the tranceiver
indicated `invalid data'.
...
  That was just the carrier-- nothing else was plugged
into the concentrator.
...
  Perhaps I didn't test it enough-- there are three
DIP switches on the end.

A concentrator is the wrong thing to connect it to.  Is your concentrator
something you would normally plug some computers into?  If so, it's like
several transceivers.  In other words, you're plugging something meant to
connect to a computer (the transceiver), into something meant to connect to
a computer (the concentrator).  That's like connecting two computers on a
serial line with neither modems nor a null modem cable between.

Does the transceiver have a male 15-pin D-connector?  Does the concentrator
have a female 15-pin D-connector with a slide lock, or a male one with
pins?  If both are male, they don't match, and it won't work.

BTW, if it's ORnet, it's old, and almost certainly FOIRL not 10baseFL.  The
size you mention bears that out, too.  10baseFL transceivers are mostly
small, about half the size of a cigarette pack.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York