RE: Homevision or other?

["Mark Harrison" <Mark.Harrison@xxxxxxx>]

Andy,

One thing I can't overstate about HomeVision is the amount of support
provided by Craig at CSI.

To pick and example from this week. Please take time to read it - it
will impress you: a user asked...


"I have discovered why my HV X10 signals are not being coupled across
3
phases even though my house is fitted with a whole-house blocking
coupler for its 3-phase power.

Today I looked at the timing of HV X10 transmissions with 3-phase
transmission enabled. As you know, HV should repeat each pulse at a time
which corresponds to the 60 degree phase shift between the 3 phase zero
crossing points. The delay time between successive pulses which I
measured was 2.77 milliseconds which suits 60Hz mains instead of the
3.33 milliseconds needed for 50Hz."

Presumably this is because I elected to take the NTSC version of the 3.1
PROM instead of the PAL version."


Craig responded:

"Tony,

You are correct. You have an NTSC video version, which was designed for
the
United States.  3-phase transmission timing is therefore based on 60Hz
AC,
which we use here.  You need a custom PROM that does NTSC video, but
transmits X-10 at 50Hz.  I'll make one and send at out ASAP."


Mark Harrison
Head of Systems, eKingfisher


-----Original Message-----
From: Andy Laurence [mailto:andylaurence@xxxxxxx]
Sent: 22 February 2002 16:46
To: ukha_d@xxxxxxx
Subject: [ukha_d] Homevision or other?


I suppose it'll be time for me to splash out on an HA controller of some
description soon.  I've been looking around at the possibles.  I've seen
this (http://www.letsautomate.com/10599.cfm?CFID=432&CFTOKEN=51078446)
which
seems to do quite a lot for not a lot of money.

I'm after something which will do X10, IR and possibly control things
via
relays (no idea what yet).  Bear in mind that I run a server 24/7 at
home,
and have another which can do the same.  What would I be missing out on
if I
bought the above rather than HomeVision?  I know I'd lose the TV
interface
of HomeVision, but that doesn't bother me.  Are there other
alternatives?

Andy
--
PC-Based Multimedia System
http://www.andylaurence.pwp.blueyonder.co.uk/pcbmms



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