Got the following error when tuning our 5975C. "Tune action stopped: Gain and offset = 0 and peaks are too narrow!" Vacuum seems fine at 2 e-5. MS also seems to work fine as it identifies the peak correctly after an injection. Any suggestions?
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Got the following error when tuning our 5975C. "Tune action stopped: Gain and offset = 0 and peaks are too narrow!" Vacuum seems fine at 2 e-5. MS also seems to work fine as it identifies the peak correctly after an injection. Any suggestions?
Hello hutchsin,
Do you get this error with more than one tune file? If you haven't done so already, could you try running a different tune file to test it?
Thanks for the reply. Yes, I have tried several different types of tunes and still get the same message. I don’t see any of the three peaks, just noise. Checked the PFTBA level and according to the manual, it’s exactly where it should be.
Have you made any recent changes to the instrument either repair or maintenance? What is the revision of the software you are using?
I added tags to this post to increase visibility.
The only change we made was to install a DB-VRX column. It goes to the Agilent splitter mounted inside of the oven, then goes to the FID and MS. When I inject a sample, the FID and MS chromatogram peaks follow each other perfectly. After the injection I load the signal and click on the peaks. The MS identifies them accurately. Just cannot get the MS to tune.
This error is associated with a problem in the quad circuitry. You could try to optimize the quad. Please refer to the 5975C troubleshooting and maintenance pg 159-160 for more information. If the optimize quad doesn't resolve the issue with the tune not completing i would recommend calling a local Agilent contact center to initiate on onsite ticket for the instrument.