Varian 990 dCLD II, Operation Manual

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Model 990 dCLD II Component Leak Detector
4-10
Table 4-3 990 dCLD II Condition States
Display Description
[BLANK] This line is blank under normal operating conditions.
BOTH FILAMENTS BURNT OUT Indicates that both filament 1 and filament 2 of the ion source have
burnt out.
FILAMENT 1 BURNT OUT Indicates that filament 1 of the ion source has burnt out. Filament 2
automatically illuminates, if it is still good, and the optional front control
panel displays a flashing
C in the leak rate exponent indicating that a
calibration routine is required.
FILAMENT 2 BURNT OUT Indicates that filament 2 of the ion source has burnt out. Filament 1
automatically illuminates, if it is still good, and the optional front control
panel displays a flashing
C in the leak rate exponent indicating that a
calibration routine is required.
GAIN TOO HIGH Indicates that the gain value required to calibrate the leak detector
during the calibration routine is greater than the allowable value. This
is generally the result of the system sensitivity being too low.
GAIN TOO LOW Indicates that the gain value required to calibrate the leak detector
during the calibration routine is less than the allowable value. This is
generally the result of the system sensitivity being too high.
NO FOCUS PEAK Indicates a tuning/calibration failure due to the system not detecting a
focus peak during the tuning or calibration routine.
NO ION PEAK Indicates a tuning/calibration failure due to the system not detecting
an ion peak during the tuning or calibration routine.
SWITCHING FILAMENTS Indicates that the system is momentarily in the process of switching
from a burnt out filament to the next available filament.