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From: cmcmanis@sun.uucp (Chuck McManis)
Newsgroups: net.micro
Subject: Re: BSR X-10 Problems
Message-ID: <6653@sun.uucp>
Date: Thu, 28-Aug-86 13:20:00 EDT
Article-I.D.: sun.6653
Posted: Thu Aug 28 13:20:00 1986
Date-Received: Fri, 29-Aug-86 05:45:33 EDT
References: <900@tekig4.UUCP>
Organization: Sun Microsystems, Inc.
Lines: 30

> Greetings,
> 
> ... lots of stuff about BSR thingies ...
>
> ...  The 6130 system is connected to the power grid through a
> power strip with built-in noise/surge suppression, and the power
> strip is plugged into another box which is also a surge protector and
> line conditioner.  ...
 ^^^ The critical fact.

Rick please note that a lot of surge suppressors (and some home
electronics equipment) connect two capacitors between the power
line to ground like so :
		||		||
     hot  +-----||------+-------||------+ return
		||	|	||
			+
		      ground
These capacitors suppress noise by shunting it to ground (the 3dB 
rolloff point is at about 50KHz) Last I heard the BSR's used a
200KHz carrier, if that is the case these cap's would look like 
very nearly dead shorts to ground. Assuming you have a commonly
wired house that makes it tough on the controller to send anything.

You can fix it two ways, remove the power strips, or put the computer
on an isolation transformer and then power strips. 

--Chuck McManis
{anywhere}!sun!cmcmanis
These are my opinions and no one elses, but you knew that didn't you.