Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 21 Feb 2006 13:02:09 -0600
From:      David Kelly <dkelly@hiwaay.net>
To:        FreeBSD-Questions@FreeBSD.org
Subject:   Re: Making APC 500 Back UPS (basic) work with FreeBSD
Message-ID:  <20060221190209.GA5097@Grumpy.DynDNS.org>
In-Reply-To: <200602211035.41130.duncan.fbsd@gmail.com>
References:  <7.0.0.16.2.20060221092207.05004b60@msdi.ca> <20060221153253.21769.qmail@web60020.mail.yahoo.com> <7.0.0.16.2.20060221105054.0505ccf8@msdi.ca> <200602211035.41130.duncan.fbsd@gmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Feb 21, 2006 at 10:35:40AM -0600, Donald J. O'Neill wrote:
>
> I think in this case, he was referring to extra sensory perception. But, 
> since this is evidently a model that just sits there and supplies 
> backup power until the battery is too depleted to AC power to the 
> computer at an acceptable level, and at that point the computer shuts 
> off. I would say this model is not capable of esp.

I'd say the original assessment was correct in that ESP was the *only*
possible way to read the status of a UPS which doesn't have an external
monitoring interface.  :-)

The very very old units often had simple status lines which could be
monitored with special software thru a parallel printer port.

If the UPS has a warning buzzer he could put a microphone on a sound
card and listen for the buzzer. The buzzes often come faster just before
the UPS breathes its last breath. If one does such a thing we've already
got a name for it, ESP.

-- 
David Kelly N4HHE, dkelly@HiWAAY.net
========================================================================
Whom computers would destroy, they must first drive mad.



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060221190209.GA5097>