Agilent Technologies Helium User Manual page 72

Technical Information
Calibration Status Messages – Cal Ok & Cal Failed pop up messages can be
enabled on the Home Screen (customer selectable) from the Calibration Menu.
Figure 29 Cal Pop - Selection (OK)
Figure 30 Cal Pop - Selection (Failed)
The internal leak is a factory supplied helium leak internal to the leak detector.
NOTE
In order to perform an external calibration, you must supply a separate calibrated
leak and mount it on top of the leak detector.
72 Agilent Helium Leak Detector User Manual