Recently, the Tandberg tape drive in our AMX500 console refused to read tapes
which were known to be good. The problem, after a litter thought, turned out to
be due to magnetization of the tape head. A tape recorder tape demagnetizer quickly
corrected this problem, however to avoid the risk of also demagnetizing the adjacent
hard disk (!) we removed the tape drive prior to demagnetization. We have also had the
samw problem in the tape drive in the X-32 work station lovated ca. 6 metres from
the magnet, and in the Aspect 9-track CDC tape drive.
On a related note we recently upgraded to UXNMR 930601.1 and the associated UNIX software.
One nice feature which was present in the older versions of the ASPECT DISNMR software, that
being the ability to randomly vary a delay by a maximum percentage (=V9) has been
implemented in UXNMR. One can also randomly delay pulses. This is useful in running NOESY
spectra in that COSY-type peaks are suppressed.
However, MXTAR still does not permit the use of wildcard characters (*) when extracting
data. It is necessary to either extract datasets one by one (unless several datasets
are store with the same filename but with different experiment numbers) or else extract the
entire tape! Is there a workaround for this problem?
Cheers, Deane
NMR Mananger, Dept. Biological Sciences, University of Calgary
dmcintyr@acs.ucalgaru.ca