From owner-freebsd-chat Fri Nov 29 10:22:58 1996 Return-Path: owner-chat Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id KAA27060 for chat-outgoing; Fri, 29 Nov 1996 10:22:58 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id KAA27055 for ; Fri, 29 Nov 1996 10:22:53 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id TAA23345; Fri, 29 Nov 1996 19:22:36 +0100 Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id TAA03355; Fri, 29 Nov 1996 19:22:35 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.2/8.6.9) id TAA26596; Fri, 29 Nov 1996 19:08:10 +0100 (MET) From: J Wunsch Message-Id: <199611291808.TAA26596@uriah.heep.sax.de> Subject: Re: Differential vs. Standard To: chat@freebsd.org Date: Fri, 29 Nov 1996 19:08:10 +0100 (MET) Cc: rls@mail.id.net (Robert Shady) In-Reply-To: <199611291659.LAA24814@server.id.net> from Robert Shady at "Nov 29, 96 11:59:57 am" X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E X-Mailer: ELM [version 2.4ME+ PL17 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-chat@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Robert Shady wrote: > 2. What exactly does "Differential" mean? Does it help, or hurt? > Differential drives appear to cost slightly more than the standard > versions, which leads me to believe that they may be better in some > way shape or form. It has a better signal/noise ratio. Hence you're allowed to have longer cables. The downside: you need differential interfaces on _any and all_ devices on this bus, including but not limited the controller itself. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)