Sumix SMX-150M - Manual (Page 47)

Tuning Guidelines
47 SMX-150M USB2.0 Camera User Guide
Figure 4-17 Increasing image quality
● Continuous precharge - checking this box this disables reset of the image sensor
making it to continuously accumulate light from frame to frame
● Slow Frame Calibration Mode and Slow Line Calibration Mode - check these
boxes to reduce the image noise
● Subtract Dark Frame - this option is available for the Video mode to reduce the
fixed pattern noise by subtracting the static dark frame from the picture. The dark
frame is obtained by clicking the Get Dark Frame button and is stored in a tempo-
rary buffer.
Exposure Mode
This option sets reset voltage for multiple slope operation when running the camera in
Video mode. It is available for Video mode only. The level (mode) of the multiple slope
pulse can be set in the Device Settings dialog by changing the Exposure Modes in the
drop-down menu.
Figure 4-18 Exposure mode section
Exposure modes are as follows:
● Single Slope mode
● Double Slope Mode 1
● Double Slope Mode 2
● Double Slope Mode 3
By default, Single Slope Mode is used.
Sensor Voltage
The image sensor has several supply voltages that can be set as High or Low:
● VDDH is the voltage that controls the sample switches and should always be the
highest voltage that is applied to the chip