Dear Isogeochem,

I hope not all Delta XL and Isodat 2.0 users have retired just yet!

We've recently combined two Delta XL units to make one functional system, and it works but ran into what seems like a trivial issue ...

We're running the system at 3.0 kV and expect mass 44 to appear just above 2500 HV steps. However, the peak centre routine fails because it's only scanning within the 1600–2500 HV window. Is there a way to force the scan range to extend from, say, 2000 down to 3000 HV instead?

Any memory refreshers would be greatly appreciated!
____________________________
Go to Isodat "Instrument Control" --> "Editors" Drop-down menu --> Gas Configurator --> Right click on the configuration you are using should allow you to open a peak centre configuration window—> click on the ">>" symbol that adjusts "Hardware X Axis" --> Adjust the "Start" and "Stop" values. 
That is how you should be able to adjust the peak centre window.
_____________________________
For a summary, if someone likes to use it in the future, the peak centre scan window should adjust itself accordingly when the high voltage is changed. In our case, it did not happen for some reason. This could be adjusted manually, using two methods, it is a bit hidden in the software. Keep in mind that it may unnecessarily extend the scanning time if the whole range is added

 

    “If you can open Isodat Editor, click on “Open” and navigate to C:\Thermo\Isodat NT\Global\Databases and find the file called IsoScanMacro. Once open, it will look like below screenshot. Within, on the left panel, open the “Peak Center” tree and select “Peak Center”. In the right panel, to open the Scan window, click the double arrows next to “High Voltage”. The Start and Stop steps are the 0 – 3kV. Save any changes.”
    Go to Isodat "Instrument Control" and there to the "Editors" Drop-down menu --> open the Gas Configurator --> A right click on the configuration you are using should allow you to open a peak centre configuration window—> click on the ">>" symbol that adjusts "Hardware X Axis" --> Adjust the "Start" and "Stop" values.