Motion Sensor; Power Indicator; Speakers - NCR RealPOS 70 User Manual

1-24 Chapter 1: Product Overview

Motion Sensor

Power Indicator

Speakers

The 7402 supports a motion sensor for system wakeup based on nearby
activity. This is a photodiode sensor which detects changes in ambient
light levels. The hardware generates an input signal to the
motherboard which can be polled or used to generate interrupts
depending on software architecture (NCR‐supplied software and
operating system software can both use this interface if configured
correctly). The 7402 does not support wakeup from soft off via the
motion sensor. However, wake from standby or screen saver are
possible, and NCR driver software allows customer applications to
directly use the motion sensor.
The photodiode mounts behind a clear plastic lens below the LCD
panel. The circuitry is optimized for normal room lighting conditions.
Excessive bright light or darkness can reduce its effective range.
Typically motion within 2‐4 feet of the system causes a wakeup.
A green LED power indicator is located below the LCD near the
motion sensor. The LED illuminates whenever the system power
supply is active. Thus the power indicator shows that the unit is On or
in Standby.
The 7402 has stereo speakers integrated into the top of the display head
above the LCD panel. These connect to the motherboard internal audio
header. Nominal audio power is 3W per channel, which provides full
PC audio capability. For higher‐fidelity sound, external speakers can be
connected to the external audio jack on the I/O bracket. The integrated
speakers are muted in hardware whenever a cable is plugged into the
external audio jack. There is only enough power available to drive one
set of speakers.