RE: xAP - The Proposed Architecture Explained...

["Paul Gordon" <paul_gordon@xxxxxxx>]

Is it true to say this: (hope the ASCII art comes out OK)

Daisy-chain =
      _      
_       _
-----_-----_-----_-----


Whereas Multi-drop =

-----+-------+--------+------
           
        
           
        
     _      
_        _
    _    
_      _


And would it also be true to say that electrically, these are effectively
the same? (assuming the devices are passive)

Paul G.




>From: "BUTLER, Tony, FM" <roaming@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: "'ukha_d@xxxxxxx'" <ukha_d@xxxxxxx>
>Subject: RE: [ukha_d] xAP - The Proposed Architecture Explained...
>Date: Thu, 15 Aug 2002 09:57:03 +0100
>
>Thanks Ian,
>
>So the answer is actually "yes the displays _are_ connected in a
daisy 
>chain
>to the controller"!
>
>Tony
>(Satisfied)
>
> > -----Original Message-----
> > From: ian.bird@xxxxxxx
> > [mailto:ian.bird@xxxxxxx]
> > Sent: 15 August 2002 09:36
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] xAP - The Proposed Architecture
Explained...
> >
> >
> > Hi Tony
> >
> > In an RS485 network the term multidrop and daisy chain go
> > hand in hand.
> > Think of a single piece of two strand cable running round the
> > various rooms
> > of the house. When you want to add a device to it you just crimp
the
> > connections to the main wires. Note there are no T junctions
> > and as small as
> > possible a neck to the device. Add on loads of devices and
> > you have multi
> > drop. The devices at each end have termination resistors on
> > to stop signal
> > reflections but that is getting techy.
> >
> > HTH
> >
> > Ian
> >
> > Ciba Vision (UK) Ltd
> > Tel:+44(0)1489 775570
> > Fax:+44(0)1489 779570
> > E mail: ian.bird@xxxxxxx
> >
> >
> > > -----Original Message-----
> > > From: BUTLER, Tony, FM [mailto:roaming@xxxxxxx]
> > > Sent: 15 August 2002 08:24
> > > To: 'ukha_d@xxxxxxx'
> > > Subject: RE: [ukha_d] xAP - The Proposed Architecture
Explained...
> > >
> > >
> > > > > So the displays are connected in a daisy chain to
the
> > controller?
> > > >
> > > > No multi drop
> > >
> > > Sorry for being thick here - could you explain multi drop to
me?
> > > The only contect I have seen it used in before is in
> > relation to KAT5
> > > modules and a "multidrop" installation there
_is_
> > > daisy-chained, 10base-T
> > > style......
> > >
> > > thanks,
> > >
> > >
> > > Tony
> > >
> > >
> > >
********************************************************************
> > >       Visit our Internet site
at http://www.rbsmarkets.com
> > >
> > > This e-mail is intended only for the addressee named
above.
> > > As this e-mail may contain confidential or privileged
information,
> > > if you are not the named addressee, you are not authorised
to
> > > retain, read, copy or disseminate this message or any part
of it.
> > > The Royal Bank of Scotland is registered in Scotland No
90312
> > > Registered Office: 36 St Andrew Square, Edinburgh EH2
2YB
> >
>             
Regulated by the Financial Services Authority
> > >
********************************************************************
> > >
> > >
> > > ------------------------ Yahoo! Groups Sponsor
> > > ---------------------~-->
> > > 4 DVDs Free +s&p Join Now
> > > http://us.click.yahoo.com/pt6YBB/NXiEAA/RN.GAA/IBOolB/TM
> > >
--------------------------------------------------------------
> > > -------~->
> > >
> > > For more information: http://www.automatedhome.co.uk
> > > Post message: ukha_d@xxxxxxx
> > > Subscribe:  ukha_d-subscribe@xxxxxxx
> > > Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> > > List owner:  ukha_d-owner@xxxxxxx
> > >
> > > Your use of Yahoo! Groups is subject to
> > > http://docs.yahoo.com/info/terms/
> > >
> > >
> >
> >
> > ------------------------ Yahoo! Groups Sponsor
> > ---------------------~-->
> > 4 DVDs Free +s&p Join Now
> > http://us.click.yahoo.com/pt6YBB/NXiEAA/RN.GAA/IBOolB/TM
> >
--------------------------------------------------------------
> > -------~->
> >
> > For more information: http://www.automatedhome.co.uk
> > Post message: ukha_d@xxxxxxx
> > Subscribe:  ukha_d-subscribe@xxxxxxx
> > Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> > List owner:  ukha_d-owner@xxxxxxx
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
>




_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com

Yahoo! Groups Sponsor

ADVERTISEMENT

For more information: http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx 
Subscribe:  ukha_d-subscribe@xxxxxxx 
Unsubscribe:  ukha_d-unsubscribe@xxxxxxx 
List owner:  ukha_d-owner@xxxxxxx

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.