HF Series Generators
Calibration
CA-1036R2
19
6. Check that the Heat Units capacity available for the X-ray Tube is 100%
or nearly (HU 0% displayed on the screen).
BEFORE MAKING ANY EXPOSURE IN AUTO-CALIBRATION,
VERIFY THAT THE LINK BETWEEN THE BANANA PLUG
CONNECTIONS ON THE HV TRANSFORMER IS INSTALLED.
7. Keep fully pressed the Handswitch button to perform continuous
exposures.
In Auto-calibration mode, all technique parameters are factory
pre-programmed and they can not be changed.
Auto-calibration can be paused momentarily releasing the
Handswitch button, whenever there is not an exposure in
process. Do not exit from Auto-calibration before the
procedure has been completed.
Auto-calibration can be cancelled by pressing the “Auto
Calibration” button. A message on the screen informs that
Auto-calibration has been cancelled and after a while the screen
shows the GSM menu.
If during Auto-calibration process, any error indication is shown
momentarily (such as “Tube Overload”, etc.), it means that Generator
can not calibrate in this moment the selected kV / mA combination
(because anode overheated, space charge, Generator power limit, etc.).
In this case, the Generator will continue with Auto-calibration of the
following available k V / mA combinations for the selected Focal Spot. At
the end of the process it will try to calibrate or calculate the combinations
previously uncalibrated.
If the Heat Units value displayed is more than 60%, exposures are
inhibited momentarily and message “Tube too hot” is shown on the
screen. This message will disappear and exposures can be made again
when the X-ray Tube begins to cool and recovers the Heat Units capacity.
At this point, it is recommended to wait until the Heat Units value
displayed are close to the 20% before making any exposure.
Note .
Note .
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