Thanks Gerry...it was that the wrong syringe was selected. I suspect 
the new student I've been training accidentally hit "chg syr" while 
doing other things and unwittingly set it incorrectly. I've got to 
add that to the list of things to advise newbies...

Anyway, it's working great again now.

sigh

Happy Monday, everyone!

~Penny

At 09:40 AM 11/19/2007, you wrote:
>HI Penny--
>
>Wrong syringe selected?  Check method to see what syringe it uses, 
>the do the "chg syr" and select the correct one.  We've turned our 
>syringe detection off, so we have to select ours manually.  Also, 
>the tray used by default is "tray01".  If there isn't a "tray01" 
>defined, that may cause problems too.
>
>good luck...
>
>gerry
>
>
>Penny Higgins wrote:
>>I have a silly problem and I hope someone out there has a simple solution.
>>
>>For whatever reason, our PAL autosampler (on a Gas Bench attached 
>>to a Delta Plus XP) is no longer getting a 'start' signal from 
>>ISODAT. I've changed nothing in my methods (in ISODAT or on the 
>>PAL), just nothing happens when the PAL is supposed to be moving. 
>>I've check all my connections. I used PAL loader on the PC to say 
>>'hi' to the PAL, and it worked. I've shut down and restarted the 
>>computer and the PAL repeatedly. No change. The PAL arm moves fine 
>>when I control it from its attached "iPod" interface. I'm stumped.
>>
>>Anything else I should try?
>>
>>Thanks,
>>
>>~Penny

*******************************************************************
                       Dr. Pennilyn Higgins
                        Research Associate

                             "SIREAL"
   Stable Isotope Ratios in the Environment Analytical Laboratory

         Department of Earth and Environmental Sciences
         University of Rochester
         227 Hutchison Hall
         Rochester, NY 14627

                    [log in to unmask]

Office: 209b Hutchison Hall               Lab: 209 Hutchison Hall
Voice : (585) 275-0601              Outer lab: (585) 273-1405
FAX   : (585) 244-5689              Inner lab: (585) 273-1397

           http://www.earth.rochester.edu/SIREAL/index.html
*******************************************************************