Hi Penny,

could you send me a scan, showing the behaviour of m2 and m3 during on/off? 
Since I don't have isodat here, you'd have to make a screenshot (Ctrl+Print 
Scrn, then paste clipboard into an image editing software). Please zip it and 
name it screenshot_niwa.zip in order to get through our mailfilter.

Cheers

Peter


On Friday 02 December 2005 07:01, Penny Higgins wrote:
> Arrrgh!
>
> I am trying to run some H2 standard on-offs with our Delta plus XP (I'm
> running water dD with the Gas Bench). Alas, I seem to have cup 5 (mass 3)
> maxed out at 50 mV and I can't seem to un-max it. I've tried shutting off
> the source, restarting the computer, starting a sequence, peak centering,
> and jumping to different masses. It's just stuck at 50 mV. I didn't just
> lose my cup, did I?
>
> Does anyone have a quick and painless solution to this wee problem?
>
> Thanks,
>
> ~Penny
>
> *******************************************************************
>                        Dr. Pennilyn Higgins
>                         Research Associate
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>                              "SIREAL"
>    Stable Isotope Ratios in the Environment Analytical Laboratory
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>          Department of Earth and Environmental Sciences
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