Gerry and others,

Just as you describe below and, even on ver. 2.0, I also see the source
tripping "off" to 0.3 kV from time to time as well (almost daily).  Very
annoying problem and very embarrassing to have to tell a client that data
was lost due to a "computer error".

Cheers,
Rick

At 12:00 AM 10/26/2003 -0400, you wrote:
>Date:    Sat, 25 Oct 2003 13:51:56 -0400
>From:    Gerard Olack <[log in to unmask]>
>Subject: Re: Isodat NT 1.5 freezing
>
>2.  On our Delta XP (Isodat NT 1.5 with service pack 1.8), the high
>voltage partially trips off, that is it drops from the standard 3kV to
>0.3 kV--with the indicator lights on the mass spec staying on (green),
>but the program indicates that the source is off.  I don't know why it's
>tripping off nor why it isn't tripping all the way off.  This happens
>once a every day or two, with or without samples running.  It can trip
>off during one run in a sequence, but the next run resets it and all it
>ok, except for the lost run.  This may or may not be the same as the
>problem with peak centering previously listed, but I don't recall it
>tripping off during a peak centering routine.

Rick Doucett, Ph.D.
Colorado Plateau Stable Isotope Laboratory
Department of Biological Sciences
Northern Arizona University
Building 21, South Beaver St.
Flagstaff, AZ, 86011-5640

Tel: 928-523-0967
Fax: 928-523-7500
Email: [log in to unmask]
NEW WEBSITE: http://www4.nau.edu/cpsil/