HF Series Generators
Calibration
CA-1036R2
26
14. Enter in user mode inside calibration mode by pressing the “Go to User
Mode” button. Select the mA station, Exposure Time and kV value noted
for each kV / mA combination not allowed (refer to step-6.). Check
calibration at these kV / mA combinations by making exposures. If
needed, enter in calibration mode and correct the Filament Current
Number of the respective kV / mA c ombination not allowed.
15. Exit from the “User Mode” screen by pressing the “Manual Calibration”
button. In calibration mode, select each combination of the available mA
stations at the kV break points (40, 50, 80 and 120 kV). Press the “Read”
button to read on the kV Display the new value of the Filament Current
Number stored for each combination. Record the new values in the Data
Book.
Note that the highest mA station for Small Focal Spot may have numbers
larger than the lowest mA station for Large Focal Spot. This is normal.
16. Exit calibration mode.
17. If required, perform the calibration procedure for the second X-ray Tube.
18. After calibration of Filament Current Numbers:
G Switch the Generator power OFF.
G Disconnect the mAs Meter to the banana plug connections.
G Re-install the link between the banana plug connections on the HV
Transformer.
G Set Dip Switch 3000SW2-4 on the H T Controller Board in
“Off” position (Digital mA Loop Closed).
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