2 Replies Latest reply on Oct 11, 2018 1:47 AM by gchaplain

    5977e msd tuning stopped

    agr

      Hi all,

       

      I tried to autotune out 5977e msd and the following error message appeared after a while: "tune/vacuum control error: the valid range for ent lens offset is 0.00 to 66.50, step 0.0081.

       

      Also, there is no signal to be seen om masshunter workstation. Any ideas? Thanks.

        • Re: 5977e msd tuning stopped
          james_jenkins

          Hi agr,

          I updated the tags and moved this to Mass Spec for better visibility. Have you been able to resolve the issue?

          Regards

          James

          • Re: 5977e msd tuning stopped
            gchaplain

            We have seen something similar to this before and it turned out the brass nuts source was slightly loose. so when it tries to ramp, vibrations distort the ion "beam" and it can't resolve the peaks when ramping.

             

            Try dissembling the source, check the entrance lens for any debris and the n reassemble it and ensure the entrance lens and other parts do not move when "wiggled" a little.