Power Sensor - Philips 221P3LPEB/00 Service Manual

3.19 Power Sensor

Functional Requirement for the front detection
For the presence sensor functionality, the following requirements are defined.
Two IRs be used for user present detections, one IR is for transmission signals, the other one is for
receiving reflection IR signals.
User must be detected in the following range: 0 up to 100cm (+20 cm)
Detection angle: +/- 30 degree
Sensor key control: adjust detection distance (0~4 scales), default is 3
0: off, 1: 55 cm, 2: 70 cm, 3: 85 cm, 4: 100cm
Anti-interference between two monitors, monitors must have anti-interference methods (coding...etc) to
prevent monitors to talk to each other.
Power Sensor Functional Behavior
Time Period
Power Sensor
Power Saving
The following setup will be supported:
The monitors may influence each other. So Monitor 1 may produce unexpected brightness-switches in
monitor 2 (and vice versa). Furthermore, user 1 could perhaps (via monitor 1) influence the power sensor
readout on monitor 2
60sec 60sec ~ 180sec
Lower down backlight
No ACTION
brightness
0 50%
Monitors standing back to back
Meridian 3
180sec ~
Backlight & LCD panel
shutdown
80%
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