All the suggestions confirmed that the problem was not me, but the
spectrometer. The VTU was not installed/configured properly. There was
an electronic switch in a wrong place inside the BVT-3000 and the DRX
was not able to recognice the evaporator device. Finally, Bruker's
people have resolved it.
Thanks everybody
ANA
-- Ana Poveda SIdI-RMN, F. Ciencias Fax: +34 1 397 8645 Universidad Autonoma de Madrid E-mail: ana.poveda@uam.es Cantoblanco, 28049-Madrid