User's Manual

No ASR – NP – 20847 – 01
9
5-8-9-1. AC power cable: +/- 1kV (between GND and AC every phase line)
5-8-9-2. USB cable: +/- 0.5 kV
5-8-10. Thermal shock
-10 degrees C / +60 degrees C
This test is done 10 cycles. One cycle requires one hour.
The device should operate normally after returned room temperature.
6. Image quality
6-1. 300dpi
6-1-1. MTF
Minimum 35%, typical 70%
MTF means ratio between 0.5line pare and 3.0 line pare
6-1-2. Magnification of image
Main scanning direction: Within +/- 3.2%
Vertical scanning direction: Within +/- 3.2%
6-1-3. Image skew
+/- 1.5 degrees see figure 3-1
Eliminate Cracked and deformed card
6-1-4. Color quality
6-1-4-1. At block D on the gradation chart
Difference of image data between red, green, blue are less
than 10 of 255 LSB.
6-1-4-2. At block B on the gradation chart
Difference of image data between red, green, blue are less
than 7 of 255 LSB.
6-1-4-3. Computation method
Difference of image data = Maximum ( | R – G | , | G – B |, | R – B | )
Gradation chart: G05A622A01
Gamma: 1
Procedure:
1) Calibrate image sensor with white reference card.