HF Series Generators
Calibration
CA-1036R2
23
1. With the Generator power OFF, set:
G Dip switch 3000SW2-2 on the HT Controller Board in “Off” position
(enables Filament and Rotor Interlocks).
G Dip switch 3000SW2-4 on the HT C ontroller Board in “On” position
(Digital mA Loop Open / Filament Current Constant).
G Remove the link between the banana plug connections on the HV
Transformer. Connect the mAs Meter to the banana plug
connections to measure mA or mAs.
2. Turn the Generator ON and enter in calibration mode by pressing the
“Manual Calibration” button on the GSM menu.
3. Select an available workstation (WS) of the X-ray Tube to be calibrated
and press the “ OK” button. This workstation has to be one of the
previously configured as “Direct”.
4. Check that the Heat Units available for the X-ray Tube is 100% or nearly
(HU 0% displayed on the screen).
5. Accordingly to X-ray tube ratings or maximum Generator power, check
which kV / mA combinations in Table 2-1 are allowed.
If error “Tube Overload” is shown after selection of a kV / mA combination,
it means this combination is not allowed for the selected X-ray Tube.
In calibration mode, if Generator power is exceeded by a kV / mA
combination selection, error “E-16” is shown after “Preparation”. Reset
this error by pressing the “Reset Error” button.
Note which combinations in Table 2-1 can not be calibrated by making
exposures (combinations not allowed due to Tube rating, maximum
Generator power, space charge, etc.) and the Exposure Time assigned
to these combinations in calibration mode.
6. Enter in user mode inside calibration mode by pressing the “Go to User
Mode” button. Select the mA station and Exposure Time of each kV / mA
combination not allowed. Increase or decrease the kV value as required
to determine the kV value allowed nearest to the kV value of the
combination. Note the kV value allowed in the respective cell of
Table 2-1.
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