Dear All:
I would like to know if some one there have had the following trouble and how was solve:
Our Unity+ 300 started some months ago to get lower and lower sensitivity, until it get to collect FID that when transform get only noise instead of the signal.
When we observed more carefuly the FID we observed that in the normal oscilation decay, every 700 mS a dead line of 200 mS appeared.
We call the technician, and until now we explore all radiofrequency and digital sections ( by the method to exchange boards) and the failure still there.
Should any of you have an idea where to look for the trouble? Our option now are rather limited to the option to make a recabling of the system but before do that, I would like to know some experiences or advices.
Thank you all!
Guillermo Mendoza-Díaz
Facultad de Química
Universidad de Guanajuato
Guanajuato, Gto.
36050 MEXICO
Received on Mon Nov 21 2005 - 16:21:40 MST