From owner-freebsd-scsi Thu Nov 20 21:52:41 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id VAA15658 for freebsd-scsi-outgoing; Thu, 20 Nov 1997 21:52:41 -0800 (PST) (envelope-from owner-freebsd-scsi) Received: from relay.nuxi.com (nuxi.cs.ucdavis.edu [128.120.56.38]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id VAA15653 for ; Thu, 20 Nov 1997 21:52:37 -0800 (PST) (envelope-from obrien@NUXI.com) Received: (from obrien@localhost) by relay.nuxi.com (8.8.7/8.6.12) id FAA12624; Fri, 21 Nov 1997 05:52:27 GMT Message-ID: <19971120215226.20748@relay.nuxi.com> Date: Thu, 20 Nov 1997 21:52:26 -0800 From: "David E. O'Brien" To: Timothy J Luoma Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: SCSI chain problems (probably me) Reply-To: obrien@NUXI.com References: <199711210303.WAA14627@luomat.peak.org> <19971120191713.22210@relay.nuxi.com> <199711210347.WAA16335@luomat.peak.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.81 In-Reply-To: <199711210347.WAA16335@luomat.peak.org>; from Timothy J Luoma on Thu, Nov 20, 1997 at 10:47:47PM -0500 X-Warning: Mutt Bites! X-Operating-System: FreeBSD 2.2.5-STABLE Organization: The NUXI *BSD group X-PGP-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Keyid: 34F9F9D5 Sender: owner-freebsd-scsi@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > So your choices are DB-50, Centronics-50, Mini-50 (is there a more proper > > term for this one?), etc. > > Well it's not entirely meaningless, since I have ordered cables and gotten > them by using that reference. Could be they just knew what I was talking > about even if it wasn't technically correct (or what most people wanted Not to arguing, but this is from the SCSI FAQ: In an extensive survey of cables available in the US and Europe, we found that more than half of the cables available have single-ended impedances in the 65 to 80 Ohm range -- below the 90 to 132 Ohms specified in the SCSI-2 spec. It seems that some (not all) cable vendors do not understand the specification, describing their cables as SCSI-2 compliant when they are not. A common misconception is that SCSI-2 means a high-density connector. In fact, there are several connector options. Enjoy! -- -- David (obrien@NUXI.com -or- obrien@FreeBSD.org) James says: "Grad school sucks."