-----------------------------------------------------------------
Deryck N.H. Webb
National High Field NMR Center
103 NANUC
University of Alberta
Edmonton, Alberta
T6G 2E1
Phone: (780) 707-0857
FAX: (780) 492-9174
-----------------------------------------------------------------
-----Original Message-----
> From: Ryan McKay [mailto:ryan_at_nanuc.ca]
> Sent: August 8, 2002 11:26 AM
> To: Deryck Webb
> Subject: Re: Acqisition time is too long-The reason
Please post:
Buglist for VNMR 6.1 - gNnoe
------------------------------------------------------------------------
gNnoe - Delay d0 is executed twice
Bug-ID: gnnoe.6101 (++)
Summary:
The proton presaturation delay d0 is executed twice if set to a non-zero
value. The command time and the Acquisition status window fail to
properly calculate the acquisition time. Bad versions: VNMR 6.1B /
Solaris 2.6 / UNITY INOVA Reported by: Inaki Guijarro, Institut Pasteur,
Paris (2000-06-22)
Workaround:
Change the name of the delay in the sequence, in the parameter files and
in the pulse sequence macro, and recompile the sequence.
You can find known bugs, fixes, patches, and all sorts of other info at:
http://www.varianinc.com/cgi-bin/nav?varinc/docs/nmr/apps/vnmrusers&cid=
5833
5
You may also want to check the version of the gNnoe as ProteinPack is
updated/bug fixed regularly.
Ryan T. McKay
Assist. Director
National High Field NMR Centre (NANUC)
105 NANUC Bld. Phone: (780) 492-2700
University of Alberta Fax: (780) 492-9174
Edmonton, Alberta Cell: (780) 951-7568
Canada T6G2E1
http://www.nanuc.ca
> From: "Deryck Webb" <deryck_at_nanuc.ca>
> Date: Thu, 8 Aug 2002 10:54:59 -0600
> To: "Brian Sykes" <brian.sykes_at_ualberta.ca>, "Bruce Lix"
> <bruce.lix_at_ualberta.ca>, "Ryan" <ryan_at_nanuc.ca>, "Ioannis G.
> Batsiolas" <jbats_at_cs.ualberta.ca>
> Subject: FW: Acqisition time is too long-The reason
>
>
>
> -----------------------------------------------------------------
> Deryck N.H. Webb
> National High Field NMR Center
> 103 NANUC
> University of Alberta
> Edmonton, Alberta
> T6G 2E1
> Phone: (780) 707-0857
> FAX: (780) 492-9174
> -----------------------------------------------------------------
>
>
>
> -----Original Message-----
> From: Zhang, Weixing [mailto:Weixing.Zhang_at_stjude.org]
> Sent: August 8, 2002 8:50 AM
> To: AMMRL (E-mail)
> Subject: RE: Acqisition time is too long-The reason
>
>
> Hello all:
>
> After several days of trouble shooting, I finally found out why the
> acquisition time is too long. Since many people are interested in
> this subject, I would like to post my result here.
>
> In VNMR, the parameter "d0" is a hiden pre-acquisition delay. If there
> is a "delay(d0)" in the pulse sequence, the "time" command only
> accounts for one d0 delay, but the acquisition does two d0 delays.
> This is why the acqusition time is too long.
>
> In the case of our gNnoe experiment, the parameters are: d0=4, d1=1,
> nt=64, ni=96, phase=1,2 "time" command tells us the experiment will
> take 17:37:8 (one d0 delay). The experiment took 31:14:46 to finish
> (two d0 delay). After the experiment started. The "Remaining time:"
> in the acquisition window is 44:55:33 (three d0 delay) although the
> experiment did not take that long.
>
> I do not know why VNMR does this, but this is what I observed. Hope
> this information is helpful to you.
>
> Weixing Zhang
>
> -----Original Message-----
> From: Zhang, Weixing [mailto:Weixing.Zhang_at_stjude.org]
> Sent: Wednesday, July 31, 2002 1:43 PM
> To: AMMRL (E-mail)
> Subject: Acqisition time is too long
>
>
> Hello all:
>
> One faculty member in our department ran an H-N NOE experiment. The
> "time" command showed that the experiment will take 17.5 hours, but
> the experiment took more than 31 hours to finish. We use a Varian
> Inova 600 (Solaris 8, VNMR 6.1C). Please let me know if you have a
> clue what might have happened.
>
> Thanks
>
> Weixing Zhang, Ph.D.
> Department of Structural Biology
> St. Jude Children's Research Hospital
> Voice: (901)495-3169
> FAX: (901)495-3032
> http://www.stjude.org/sb/wzhang.htm
> http://www.stjude.org/sb/nmr.htm
>
>
>
Received on Fri Aug 09 2002 - 11:35:43 MST