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Meridian 3
Voltage dividers may be used to reduce the input signal level.
8 Monitor Audio Amplifier Input Impedance
The monitor audio amplifier shall have minimum 10K Ohm AC input impedance
4.18 support
Connect the HUB port of the monitor to host PC’s USB port via USB cable,
Then attach external device to the downstream port of the monitor.
Check if the device can work properly.
4.19POWER SENSOR
UNCTIONAL Requirements for the front detection
For the presence sensor functionality, the following requirements are defined:
x Two IRs be used for user present detections, one IR is for transmission signals, the other one is for
receiving reflection IR signals
x User must be detected in the following range:
40 up to 100 cm (+ 20cm).
x Detection angle:
+- 30 degree (for IR LED )
x SENSOR key control,
Adjust detection distances (0~4 scales), default is 3 ,
0 : 0FF
1 : 90 cm tolerance : (±10cm)
2 : 100 cm tolerance : (±10cm)
3 : 110 cm tolerance : (±10cm)
4 : >130 cm
x SENSOR distance measure :
1. Cotton material color : black
2. Monitor center straight distance (90 deg)
3. Body width : about 40cm
4. Body horizontal move : Monitor center +- 5cm
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