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HAPSITE ER Operating Manual
5 Touch OK or push OK SEL to exit the screen. (See Figure 9-15.)
Figure 9-15  Tune report
9.4  Performing Manual Tune
Manual tunes are a standard routine maintenance practice for HAPSITE ER and 
HAPSITE SmartPlus, and should be performed once every 4 to 6 months to 
maintain optimal performance of the unit’s mass spectrometer.
Routine manual tunes will improve the accuracy of compound identifications, and 
provide indications of the health of the mass spectrometer.
The following procedure outlines the steps in manually tuning HAPSITE ER. If 
performing this task for the first time, we recommend contacting INFICON directly 
for support.
9.4.1  Manual Tune Variables
The goal of Manual Tune is to adjust the inputs, such that the outputs fall within 
appropriate ranges. 
Instrument Outputs:
 Base Peak Gain (BPG)
 Ion Percentages
 Status Column
Primary User Inputs/Editables:
 Ion Resolutions
 Ion Energies
 EM Voltage
Secondary Inputs/Editables:
 Focus Voltage
 Emission Current
 Baseline + Threshold