Trap Fcy Calibration failed

[kabavik]

Dear collegues,

Please advise me what can be the reason of Autotune Fail (Trap Fcy Calibration)
In final report there is following message/

Integratior Zero Dac/419 Pass
Electron Multiplyer Volt /1850 Pass
Rf full scale adjust /3751 Pass
Mass Calib Pass

Trap Fcy Calib mass1: 69.0 Freq1:245.6 mass2:414.0 freq2:246.5 FAIL
Trap Fcy Calib mass3: 264.0 Freq3:92.0 mass4:4264.00 freq4:193.0 FAIL

I ll be appreciate for any comments,
best regards

kabavik

[danicrd]

you haven't posted any info about your instr... but i assume you are using saturn 2000 or 400ms ion trap..
So, you have to clean very well the trap, bakeout overnight and retry a full autotune
Eventually switch to new filament if actually appear distort during trap disassembly
good luck

[kabavik]

Thank you for answer.
It is Varian MS 4000.
I just cleaned ion trap, made bakeout and made full autotune few times.
Still the same answer.
Could be electronic problem (power board)??

[Hornet]

Try again by increasing the calibration gas pressure (also check if there is enough) and then tune.

[danicrd]

are you working in external or internal ionization?