
37
[2] The flow from IRIS Control
1) Refer to the schematic diagram of P201-2/2.
2) Q262 and Q264 is 74VHC123AFT "Mono stable multi vibrator".
Q263 and Q265 is BA6951FS "DC motor driver".
3) Refer to the following timing chart.
4) IRIS1 or IRIS2 = "L" level (0V) ------- Iris is narrow.
IRIS1 or IRIS2 = "H" level (3.3V) ---- Iris is Wide.
5) The iris mode in menu vs. Iris pattern.
Iris Mode
Contrast
Brightness
Lens Iris
Illumination Iris
1
High
Low
Narrow
Narrow
2
Middle
Middle
Narrow
Wide
3
Low
High
Wide
Wide