Loss of x-nucleus signal after wobb?

From: Jim Bloxsidge (j.bloxsidge@surrey.ac.uk)
Date: Tue May 06 2003 - 04:25:54 PDT


Dear Bruker-Users,

DRX-500 XWin-NMR 3.1 on a WinNT platform. HPPR2 preamplifier.

I am seeing an intermittent fault in which, after a successful "wobb,
x-nucleus pulsing proceeds with all apparently normal, except that no
signal is collected. Noise looks normal.

Starting "wobb" again and stopping it clears the fault, but not much else
does except rebooting the AQR rack.

Mike Engelhardt thinks that there may be a software bug which is,
sometimes, causing "wobb" to exit with the frequency stuck at one end of
the wobble range, rather than back on centre, but the fault won't cooperate
so that we can measure it!

Anyone else experienced this?

regards Jim Bloxsidge.

*************************************************************
J P Bloxsidge Email: j.bloxsidge@surrey.ac.uk
Chemistry (C4),
University of Surrey Tel: +44-(0)1483-686852
GUILDFORD
Surrey GU2 7XH Fax: +44-(0)1483-686851
UK
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