Date: Mon, 7 Jun 1999 07:06:27 -0500 (EST) From: Alfred Perlstein <bright@rush.net> To: Ladavac Marino <mladavac@metropolitan.at> Cc: questions@freebsd.org Subject: RE: suggestions for a keyboard/monitor switch? Message-ID: <Pine.BSF.3.96.990607070352.9491h-100000@cygnus.rush.net> In-Reply-To: <55586E7391ACD211B9730000C110027617963E@r-lmh-wi-100.corpnet.at>
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On Mon, 7 Jun 1999, Ladavac Marino wrote: > > -----Original Message----- > > From: Alfred Perlstein [SMTP:bright@rush.net] > > Sent: Monday, June 07, 1999 11:36 AM > > To: questions@freebsd.org > > Subject: suggestions for a keyboard/monitor switch? > > > > > > I've got a boatload or PCs and a sparc here along with a 21" > > monitor, I've been trying to get a keyboard/monitor switch > > however, every model i've tried distorts the signal to the > > monitor so that at 1600x1280 there is a visible blur. > > > [ML] Let's see: > 1600x1280@72Hz is 150 MHz of pure picture data bandwidth. Sync > gaps add up to approx. 220 MHz (which is probably the RAMDAC clockrate > you are using.) OTOH, keyboard/monitor switches are unshielded cheap > mechanical monstrosities which have problems with anything over 100 MHz > or thereabouts. It takes somewhat more money to switch 220 MHz signals > without introducing distortion (i.e. your typical el-cheapo CMOS analog > signal switch will not do either). Sorry, this seems to be the geist of > it :( > > /Marino > > > Anyone have any suggestions on a model that may work, perhaps > > something that can boost/filter the signal? I guess it's a > > lot to hope for when you have an analog signal... > [ML] at that bandwidth, yes. :( I have this powered switchbox here as well as a mechanical one, I didn't expect much from the mechanical one, but the powered one I was given from work, well i kinda expected more from it... *sigh* at least the monitor will switch between BNC/25pin with one button so it'll to 2 computers :) anyhow, thanks, -Alfred To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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