Manual Tuning - Agilent Technologies Helium User Manual

Technical Information

Manual Tuning

Press Manual Tuning and the Manual Spectrometer Tuning screen appears

(see the following figure).
Use this screen to view and manually adjust the parameters of the ion source in the
spectrometer for a maximum helium signal.
Select a value to change it.
Accesses the keypad to
set Gain.
Accesses the keypad to
set Gain
Select the filament for use
Figure 72 Manual Tuning
Emission Current
Select the
filament for use
Ion Voltage
Agilent Helium Leak Detector User Manual
Displays the value of the existing Emission current of
the spectrometer Ion Source and allows for emission
current adjustment. The emission current parameter
tunes the leak detector, maximizing the leak detector
output for a peak helium signal.
Typical Emission current values range from 0.6 mA
to 1.2 mA.
Displays the current ion voltage value of the
spectrometer Ion Source. The ion voltage parameter
tunes the leak detector, maximizing the leak detector
output for a peak helium signal.
Typical ion voltage values range from 205 VDC to 240
VDC. The ion voltage value is automatically adjusted
and set during the full calibration routine.
Increments/
decrements
the selected
value
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