4. Smear

• Place a 1/10 V chart in front of the halogen light source as shown in the figure and image that chart.

• Adjust the amount of light entering the CCD with ND filters so that the CCD output signal at point A becomes

250 mV.

• Remove the ND filter(s) and measure the output value of the CCD output signal from the first line (point B).

SM =

× 100 [%]

VB:

The amount of smear at point B [mV]

TND: The ND filter transmissivity

Figure 5

5. Dark Signal

Completely block all light from falling on the CCD element surface and measure the CCD output signal at the center

of the image.

Here, do not measure the difference between this signal and the optical black section level, but rather measure the

difference between this signal and the no signal level that has no pixel information. (See Figure 6.)

Figure 6 Structure of a Single Horizontal Period

VB · TND

250

No.5219-7/11

LC9998G