Planmeca Proline XC, Technical Manual, Page: 94 / 258

Chapter D - ADJUSTMENT & CALIBRATION
D-40 Planmeca Proline XC X-ray unit
AUTOMATIC EXPOSURE CONTROL (AEC) CALIBRATION
Technical Manual
The AEC detector offset value (base signal) is shown on the display when the unit is in the
AEC mode and no exposure is taken. Set the offset to value 8 ±2 with the offset adjustment
trimmer located on the Cassette limit PCB. Turning the trimmer clockwise increases the value
and turning it counterclockwise decreases it.
Figure 69
After the offset value is set the AEC-signal during the exposure is adjusted. Check that the
AEC calibration filter is in the front of the primary collimator.
In the darkroom open the cassette and place a film inside the cassette. Close the cassette.
Slide the cassette into the cassette holder.
Protect yourself from radiation and press the exposure button.
CAUTION Radiation is generated when the exposure button is pressed. Take adequate protection
measures. Keep the exposure time as short as possible.
AdjAEC
.eps
Adjust the offset.