1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 <2015> 2016 2017 2018 2019 2020 2021 2022 2023 2024 | Index | 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 <2015> 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
<== Date ==> | <== Thread ==> |
---|
Subject: | RE: Alarm annunciation with ALH and other PC based systems |
From: | Emmanuel Mayssat <[email protected]> |
To: | Rod Nussbaumer <[email protected]>, EPICS mailing list <[email protected]> |
Date: | Tue, 20 Jan 2015 15:43:28 -0800 |
Interesting thread.
If I understand your email correctly, you are using the old ALH on a PC. Well, if you are sticking with this setup then the best way may be to dedicate a computer to run the ALH and put it behind a glass so that no one can touch it! Put the speakers out of reach as well. Are you open to using something else other than the ALH? -- Emmanuel Mayssat http://www.epicsqt.org > Date: Wed, 14 Jan 2015 13:27:14 -0800 > From: [email protected] > To: [email protected] > Subject: Alarm annunciation with ALH and other PC based systems > > Hi All: > > Sorry that this isn't really an EPICS question, other than the tenuous > connection via Alarm Handler. > > The question has been raised here about how to ensure that the audible > alarms from Alarm Handler are always audible. A number of places exist > where this can be disabled. The speakers can become faulty, the > wall-wart commonly used to power the speakers can become disconnected or > faulty, the volume control on the speakers can be turned down, the host > OS software controls can be turned down or muted either through accident > or software fault, audio cables can become faulty, and sound card > hardware can become faulty. Most of these will manifest only in silence. > > Has anyone undertaken measures to monitor any of these components in > some way, or implemented hardware which is not subject to the common > frailties of commodity audio equipment used for control room alarms? > > Any suggestions cheerfully accepted. Thanks. > > Rod Nussbaumer > E-Linac Controls, TRIUMF > Vancouver, Canada. |