stewartc@amc-gw.amc.com (Stewart Castaldi) (08/23/90)
Last year there was a good discussion about the electrical differences between type I and II ethernet transceivers and tranceiver cables. If anyone saved those articles I would appreciate a copy. I would also appreciate pointers to any books or documentation that would show these differences. A practical guide to ethernet installation and troubleshooting. -- Stewart Castaldi DNS: stewartc@amc.com Applied Microsystems Corporation UUCP: amc-gw!stewartc Redmond, Washington 98073 Dial: (206) 882-2000
pcaloca@synoptics.COM (Paul Caloca) (08/24/90)
From postnews Thu Aug 23 16:04:40 1990 In article <2800@amc-gw.amc.com>, stewartc@amc-gw.amc.com (Stewart Castaldi) writes: > saved those articles I would appreciate a copy. I would also appreciate > pointers to any books or documentation that would show these differences. > A practical guide to ethernet installation and troubleshooting. > -- > Stewart Castaldi DNS: stewartc@amc.com > Applied Microsystems Corporation UUCP: amc-gw!stewartc > Redmond, Washington 98073 Dial: (206) 882-2000 Three books which I have found to be very valuble are: KEEPING THE LINK by Martin Nemzow Ethernet Installation & Management McGraw-Hill 1988 ISBN 0-07-046302-6 LAN TROUBLESHOOTING HANDBOOK by Mark A. Miller M & T Books 1989 ISBN 1-55851-054-0 DEISIGNING AND IMPLEMENTING ETHERNET NETWORKS by Bill Hancock QED Information Sciences ISBN 0-89435-366-7 ======================================================================== Paul Caloca | "Minds are like parachutes - Technical Support | they ony function when open." SynOptics Communications | Mountain View, CA |==================== Thomas Dewar Email: Paul_Caloca.SALES@engtwomac.synoptics.com UUCP: ...!ames.arc.nasa.gov!synoptics.com!engtwomac!Paul_Caloca.SALES FAX: 415-967-8710 ========================================================================
jdm1@eds1.UUCP (Jon McCown) (08/24/90)
As an 'along with' the request for the details of Type I and II, I
really want to know what the guts of a 'thin-net' terminator are.
My first guess is an R/C shunt at some frequency, but some real details
would help.
- Jon
--
J.D. McCown - RCSG Director - Senate of Pennsylvania
psuvax1!eds1!jdm1 (this space intentionally "Your lupins or your life!"
jdm1@eds1.eds.com filled with this text) - Dennis Moorelouie@sayshell.umd.edu (Louis A. Mamakos) (08/26/90)
In article <593@eds1.UUCP> jdm1@eds1.UUCP (Jon McCown) writes: >I really want to know what the guts of a 'thin-net' terminator are. A 1/2 or 1/4 watt 50 ohm non-inductive resistor. louie
peiffer@cs.umn.edu (Tim Peiffer (The Net Guy)) (08/26/90)
>>I really want to know what the guts of a 'thin-net' terminator are.
A theoretical or ideal thin-net transmission line has a
characteristic impedence of 50 ohms at all frequencies. It also
has infinite length. In order to make a real line look ideal,
it is terminated at the end with a resistor, preferably carbon
film or carbon composition.
Any other form such as wire wound types would have varying
impedance across the frequency spectrum.
Since the characteristic impedance of 'thick' ethernet is the same,
the internals are roughly the same.
Tim Peiffer
--
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Tim Peiffer peiffer@cs.umn.edu or
Computer Science Dept ..!rutgers!umn-cs!peiffer
University of Minnesota