4 Sep
2006
4 Sep
'06
11:43 a.m.
Alexey Toptygin wrote:
On Sun, 3 Sep 2006, Don wrote:
Scanner has DB25 and Centronics connectors. Obviously, an attempt
to be compatible with a variety of different applications.
They are no doubt wired AS IF they were two "identical" connectors
with the scanner itself sitting *logically* between them (though
I have seen this PHYSICALLY violated so often on SCSI devices
that I wouldn't make any bets on it!).
So, it *suggests* running *into* the slide scanner on one connector
and *out* (to the next downstream device) on the *other* connector.
(scanners often only have a single connector which makes putting
more than one on a given SCSI chain a bit of a chore)
Which won't work unless you can disable termination in the scanner,
right? If the scanner was designed to only ever use one of the
connectors (always be at the end of a chain) and not require external
termination, that might not be possible...
Scanner does not have an internal terminator. Currently
terminated with a feed-thru Centronics50 terminator on the
*one* connection to the Centronics port.
E.g., how much grief can I expect going *through* the
slide
scanner with DB25 coming in and Centronics going out?
I'm not sure that you even _can_ do this without seeing some detailed
technical info on the scanner.