guyton@randvax.UUCP (Jim Guyton) (05/03/91)
Greetings, I'm in the market for more than a few *internal* scsi terminators. The one part I've got is made by "dataMate" but our purchasing dept can't find them. Has anyone got their number and/or the number of other scsi parts suppliers? Pls note that I'm looking for something that will plug into the scsi ribbon cable port, not resistor packs or external terminators. Please email to me instead of posting, and I'll summarize responses. Thanks much, -- Jim Guyton guyton@rand.org -- internet randvax!guyton -- uucp 1-213-393-0411 x6458 -- voice
brankin@cbnewsk.att.com (william.t.rankin) (05/03/91)
In article <2955@randvax.UUCP> guyton@randvax.UUCP (Jim Guyton) writes: >I'm in the market for more than a few *internal* scsi terminators. >Pls note that I'm looking for something that will plug into the >scsi ribbon cable port, not resistor packs or external terminators. Me too, but I'd like some directions on how to build a terminator plug given, say, a 50-pin centronics port. Actually, the format of the connector is not important, just give me it in terms of pins. Anyone built such a beast? >Thanks much, > >-- Jim Guyton thanx, also. -bill rankin wtr@bromo.att.com
jvincent@bnr.ca (John Vincent) (05/03/91)
In article <1991May3.120134.26459@cbnewsk.att.com> brankin@cbnewsk.att.com (william.t.rankin) writes: >In article <2955@randvax.UUCP> guyton@randvax.UUCP (Jim Guyton) writes: > >>I'm in the market for more than a few *internal* scsi terminators. > >>Pls note that I'm looking for something that will plug into the >>scsi ribbon cable port, not resistor packs or external terminators. > I believe I've got what you're looking for right in front of me. It is a termination deivce (male on one side female on the other) for a 50 pin ribbon connector called the "data Mate" .. It is made by Methods Electronics Inc.( I think, the label on the bugger is hard to read). The one we have says SINGLE ENDED 405124 on it so I assume they also make a differential one. If anybody wants more info than this I can try to find out where we ordered ours. It may or may not have come from a Canadian supplier. -- $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ John Vincent $ My opinions are my own, steal them and I'll $ $ Bell- Northern Research $ hunt you down and kill you. $ $ P.O. Box 3511, Station C. $ $ $ Ottawa, Ont , K1Y 4H7 $ Sorry, nothing inspirational to say. . $ $ (613) 763-8446 $ $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ Bitnet/NETNORTH : jvincent@bnr.ca $ $ UUCP : uunet!bnrgate!bcara315!jvincent $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
db@seachg.uucp (David Bell) (05/06/91)
In article <1991May3.120134.26459@cbnewsk.att.com> brankin@cbnewsk.att.com (william.t.rankin) writes: > >Me too, but I'd like some directions on how to build a terminator >plug given, say, a 50-pin centronics port. Actually, the format >of the connector is not important, just give me it in terms of >pins. > >Anyone built such a beast? > A few companies sell these. One that we deal with is Technical Cable Concepts, 714-261-2423. They have a DB-50 connector version and a SCSI-2 connector version. To build one yourself is possible but a lot of work. You have to terminate the following lines: DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, DBP, ATN, BSY, ACK, RST, MSG, SEL, C/D, REQ, I/O. These lines are located on the following pins: 2, 4, 6 ,8 ,10, 12, 16, 18, 32, 36, 38, 40, 42, 44, 46, 48, 50. Each line has to be terminated via a 220 ohm resistor to 5 volts (available via the termpwr signal on pin 26) and a 330 ohm resistor to ground (all of the odd pins are connected to ground with the exception of pins 23, 25 and 27) You are probably better off to just buy one. BTW does anyone know of a SCSI-2 termination solution ? (by SCSI-2 I'm refering to the new termination scheme of pulling up each signal via a 110 ohm resistor to a regulated 2.85 volts, not just using the SCSI-2 type connector). Thanks in advance for any help. -- Dave Bell Sea Change Corporation Mississauga, Ontario, Canada UUCP: ...!uunet!attcan!seachg!db