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Collision energy incorrectly applied on Xevo G2-XS QToF running UNIFI 1.94 - WKB71047

Article number: 71047

SYMPTOMS

  • In MS mode, or in any other mode when the collision energy is not selected, fragmentation still occurs. 
  • Fragmentation cannot be reduced by front-end tuning.
  • Turning on the collision energy and lowering it to 6 eV or lower reduces or removes the fragmentation.
  • Method acquisitions are not affected.
  • Occurs only on new installs or upgrades from earlier versions of UNIFI.

ENVIRONMENT

  • Xevo G2-XS
  • UNIFI 1.94
  • Vion IMS QToF
  • DP 2.2 (Vion only)

CAUSE

A bug in UNIFI 1.9 SR4 appears to apply a high-collision energy on the tune page whether or not collision energy is selected. 

FIX or WORKAROUND

Toggle the collision energy on and off.

ALSO, adjust the tune page parameters and save then reload original settings to ensure nothing has latched.

Reboot the system.

Using all of these workarounds should fix the issue.

 

ADDITIONAL INFORMATION

 

id71047, SUPUNIFI, UNIFISVR, UNIFISW18, UNIFOPT, UNIFQLIC, UNIFSW17, UNIFSW18, UNIFSW19, UNIFWGLIC, UNIFWKLIC, VION, XEVOG2XSTF

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