送信者: Alan R. Whitney <awhitney@haystack.mit.edu>
宛先: Wayne Cannon <wayne@sgl.crestech.ca>; Brent Carlson <bcarlson@sol.drao.nrc.ca>; Dick Ferris <dferris@atnf.csiro.au>; Dave Graham <p062gra@mpifr-bonn.mpg.de>; Nori Kawaguchi <kawagu@vsop.isas.ac.jp>; Tetsuro Kondo <kondo@crl.go.jp>; Steve Parsley <parsley@jive.nfra.nl>; Sergei Pogrebenko <svp@jive.nfra.nl>; Jon Romney <jromney@nrao.edu>; Ralph Spencer <res@jb.man.ac.uk>; Rick Wietfeldt <rick@taua.jpl.nasa.gov>; Alan Whitney <awhitney@haystack.mit.edu>
件名 : Fwd: VSI: Toronto Notes
日時 : 1999年9月1日 22:23

Gentlemen,
I received the following note from Dick Ferris in response to yesterdays 
e-mail from me.  I apologize for confusion I may have created; Dick's note 
should serve to set the record straight.
Regards, Alan

>X-Authentication-Warning: venice.tip.CSIRO.AU: dferris owned process doing -bs
>Date: Wed, 1 Sep 1999 19:51:26 +1000 (EST)
>From: Dick Ferris <Dick.Ferris@atnf.csiro.au>
>X-Sender: dferris@venice.tip.CSIRO.AU
>To: "Alan R. Whitney" <arw@dopey.haystack.edu>
>Subject: VSI: Toronto Notes
>
>Dear Alan,
>
>Re the Notes for 22 August, a bit of confusion has crept into the para
>"Connectors and Cables" near the end of page 2.
>
>The more compact format link variant for Direct Parallel Ports (p.20) is
>actually proposal VSI-12a using MDR-40 connectors (and a fully assembled
>flat ribbon-coax cable from 3M).  The AMPLIMITE connector mentioned in the
>Notes is from VSI-12b, and is a standard DB-50.  It uses ~2.5 * the panel
>area and PCB footprint of the MDR-40.  Otherwise both connectors and cable
>types share the attributes mentioned.
>
>The DB-nn variants are included because the wider range of connector types
>(notably panel-mount cable connectors) support internal cabling as
>described in "Internal Module Ports .." (p.24).  To match the size of the
>MDR-40 using D-Subs we go to "Partially Serialised Ports" (p.12) and a
>DB-15 in VSI-11b.
>
>This provides the same data capacity plus extras on a light and flexible
>8mm cable.  In contrast with VSI-10x there is a range of chips to chose
>from with a solid base in consumer products.
>
>The combination of size and versatility make -11b one of my personal
>preferences.  Starting in October we will be in a position to start
>knocking up some demonstration boards once the field has narrowed a bit
>more.
>
>
>Unfortunately I will be travelling and generally out of touch for four
>weeks from Sept 12.  I'm not sure whether your four-part distribution
>today will produce fierce debate or stunned silence.  If the former I must
>ask forgiveness in advance for a slow and irregular response to any
>queries.
>
>Regards,
>Dick
>
>
>

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