Dear Listmembers,
i'm a user of second-hand MAT 251. Recently I switched from ISODAT ver. 4.1 to ver 
7.4  and from this moment some new problems emerged:

1. During PRESS ADJUST operation, when sample bellow should be adjusted, 
changeover valve is closed, standard (?!) bellow  is adjusted, and High Voltage is off 
(safety circuit ) = the end of measurement.

2. PEAK CENTER  operation is sometimes terminated and fatal error "RT Bounds 
exceeded" appears.

Has anybody ever met such symptoms ? Has anybody any idea what they mean and 
how to solve my problems? I will appreciate any help.

best regards,
Zbigniew 
  -
dr Zbigniew Gorczyca
AGH University of Science and Technology
Faculty of Physics and Applied Computer Sciences
al. Mickiewicza 30
PL 30-059 Krakow
POLAND