Date: Wed, 2 Jul 1997 09:58:00 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: joerg_wunsch@uriah.heep.sax.de Cc: chat@FreeBSD.ORG Subject: Re: Monitor shadows? Message-ID: <199707020028.JAA03515@genesis.atrad.adelaide.edu.au> In-Reply-To: <19970701105905.OS62513@uriah.heep.sax.de> from J Wunsch at "Jul 1, 97 10:59:05 am"
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J Wunsch stands accused of saying: > As Michael Smith wrote: > > > You can move microwave down a twisted pair, as long as it's carefully laid > > out; the same goes anywhere else really. > > Sure, but for a Sub-D connector with its totally ``weird'' geometric > layout, how would you ensure a uniform impedance? I think you can > only ensure the latter for a uniform geometric layout, where the ratio > between conductor diameter and dielectricum thickness is constant. In the same way you do for any other low-loss connector I guess, make the geometry change gradual, not sudden, and choose your dielectric to suitg. FWIW, some of the RF gear we've integrated with has run 100MHz+ signals through D connectors; we were appalled to begin with too, but the RF people looked at us (the digital/software people) like we were nuts, so I have to assume it can be done 8) > Good that there's no topic off-topic enough in a -chat list. :-) *grins* -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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