Planmeca Viso Technical Manual page 75

Collimator adjustment - Angle
Technical manual
5. Acceptable angle value is -210.0 ± 0.1 degrees. The calibration is not
successful when the scan angle is outside the accepted range. In this
case you have to adjust the C-arm rotation movement. Refer to section
"Adjusting C-arm rotation movement" on page 90.
6. Acceptable skewness value is ± 0.15 degrees and panel position value ±
0.5 mm. If the values are not acceptable, adjust the sensor assembly
position. Refer to section "Sensor assembly adjustment" on page 88.
7. After successful calibration perform Collimator adjustment - Angle
calibration.
1. Remove the geometry calibration platform and geometry phantom from
the patient support base.
2. Click Next on the Geometry calibration window. The system will move to
the Collimator adjustment - Angle calibration.
3. Protect yourself from radiation and press the exposure button to take the
exposure. The Collimator adjustment - angle exposure results will
appear in the window.
5 Adjustments and calibrations
Planmeca Viso 69