Sensor 1/Sensor 2 Automatic Brightness Control (S1A and S2A)
The automatic brightness control can be enabled or disabled by setting and clearing the appropriate bits in
register 3. Bit 15 and Bit 7 in register 3 control this functionality. When the bits are set, the brightness is
automatically adjusted by the controller and when cleared the brightness is frozen.
Note:
If bit 15 in register 2 is not set (or cleared to zero), this will have no effect.
Note:
When the automatic brightness control bit is cleared, the actual brightness value would be the last
value before the operation. If needed, the user can then remotely adjust the brightness value by writing to
the corresponding brightness register for the corresponding sensor after enabling the corresponding
brightness override register.
Sensor 1/Sensor 2 Brightness Override (S1BO and S2BO)
Bit 14 and bit 6 of register 3 allows a remote brightness override functionality. When these bits are set, the
user can remotely set the brightness by writing a 6-bit value to the corresponding sensor.
Sensor 1/Sensor 2 Brightness Override Value
The brightness of Sensor 1 and Sensor 2 can be changed remotely by writing a value between 0 to 64 in
these two 6-bit registers. The corresponding brightness override bit has to be set before these values can be
accepted by the controller. This advanced feature is typically used by power users with a really good
understanding of the brightness control algorithm.
Note:
If automatic brightness control is enabled and a remote brightness value is written, then the
automatic brightness control algorithm will use that value as the initial value for its algorithm. The final
brightness may or may not settle to the override value. This functionality may be useful for some advanced
applications.
Content subject to change without notice
SCU5: Sensor and Web Guide Controller User Manual v 3.6| Page 57
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