Bruker AV500 TOPSHIM error

i like this post (click again to cancel)

i dont like this post (click again to cancel)

remove favorite mark from this question (click again to restore mark)

Hi, I'm having a problem with topshim on Bruker AV 500 using topspin 2.1. it finishes with error (topshim: FieldMap - not enough valid points in focus: the gradient does not work).The fact is that when the device is reset (after do a "cd" everything seems to be ok) this works perfectly for hours, but always comes back after a while. I have replaced the unit gradients (Great 3) and lock plate, but the problem reappears. Where is can be the problem? Thanks in advance for answering.

bruker gradient-shimming

asked Apr 11 '15 at 03:39

jrlopez
1

One Answer:

oldest newest most voted

i like this answer (click again to cancel)

i dont like this answer (click again to cancel)

Hi! How old is your magnet? It happen to our 600 MHz system before, but it had nothing to do with the console unit. The most likely problem is the field drift over time, thus your 2H lock for the solvent is off now. Try to do "edlock", make sure the lock signal is in the middle of the lock screen. This should fix the problem. Good luck. If you have more problem, post here again, I will try to help.

link

answered Apr 14 '15 at 06:23

Jim Lin
1

Here (once you log in) you will be able to sign up for the periodic email updates about this question.

Your answer

Please start posting your answer anonymously - your answer will be saved within the current session and published after you log in or create a new account. Please try to give a good answer, for discussions, please use comments and please do remember to vote (login to vote)

toggle preview

Tags:

bruker ×75
gradient-shimming ×6

Asked: Apr 11 '15 at 03:39

Seen: 5,135 times

Last updated: Apr 14 '15 at 06:23

Related questions