Vatech Smart Plus PHT-35LHS - Page 137

Smart Plus (PHT-35LHS)
Technical Manual
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7) Type 1329,800 in the X, Y box and make sure that ave and dev values meet the standard.
Category
ROI 1 (800,800)
ROI 2 (2000,800)
ROI 3 (1330,800)
Noise (dev) Under 10 Under 30
Homogeneity (ave)
Over 600
(The difference between the two values
should be less than 10%)
Over 1200

If the noise level doesn’t meet the standard, calculate Homogeneity(ave) -
Noise(dev) ratio at each ROI, and if the results meet the following standard, the
inspection test is passed.
- Homogeneity(ave) ÷ Noise(dev) ≥ 100(at ROI1,2) 500(at ROI3)

If the standard is not met overall, perform PANO Sensor Calibration and PANO
Collimator Alignment again.
ROI1(800,800)
ROI3(1330,800)
ROI2(2000,800)