From: John Philo <jphilo@mailway.com>
  To  : rasmb@bbri.org
  Date: Fri, 22 Jan 1999 15:13:38 -0800

RE: curious message on XL-A

Joel,

That message indicates that the slit drive mechanism is taking too much time
'hunting' for the desired radial position.  I believe you may only get this
message during 'step' scans and not in 'continuous' mode.

This could indicate some mechanical problems--possibly dirt or burrs on the
slit assembly.

John Philo

-----Original Message-----
From: Joel Mackay [j.mackay@biochem.usyd.edu.au]">mailto:j.mackay@biochem.usyd.edu.au]
Sent: Friday, January 22, 1999 3:24 AM
To: rasmb@bbri.org
Subject: curious message on XL-A


Hi all,
This talk of communication problems has reminded me to ask everyone about a
message that appears on the screen of the PC controlling our XL-A from time
to time during autoscans. The message says "R servo timeout", but doesn't
seem to actually cause any problems - scans still collect and are saved,
and when you type "ESC" as suggested, the message just disappears. Does
anyone know the cause of this "problem"? I asked the engineer at Beckman
here in Sydney, but he didn't know.
thanks in advance,
Joel Mackay

************************************************************************
Dr Joel Mackay			ph +61-2-9351-3906
ARC Research Fellow			fax +61-2-9351-4726
Department of Biochemistry
University of Sydney
NSW 2006 Australia
http://www.biochem.usyd.edu.au/~joel/
************************************************************************