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7.1 Hardware-Related Q&A
Q: Which is the touch panel system?
A: It is based on the IR scan system.
Q: Which is the advantage of the IR scan system?
A: It is the capability of direct drawing on the screen. This does not deteriorate the picture quality nor cause parallax.
Q: Are there any consumables?
A: The pen tip and the battery are consumables. Two extra pen tips are supplied. The pen tip is available as a service part.
Q: How long is the service life of infrared LEDs?
A: 10,000 hours or more in a normal operating environment. This refers to hours of continuous use. Since normal use is
not continuous, service life under normal conditions should be two or three times 10,000 hours.
Q: How long is the service life of the pen battery?
A: 20 hours of continuous use when an alkaline battery is used.
One screenfull of characters that are 6 cm wide and 6 cm high would contain 120 characters (when two thirds of the
screen is used for writing). It takes an average of 1 second to write a 6 cm wide and 6 cm high character, one screenfull
takes 2 minutes to write. Assuming that 5 pages are written every hour of class or business meeting, the pen is used 10
minutes every hour. If there are 6 hours of classes or business meetings per day, the battery is used up to 20 hours,
which would correspond to one working month (20 days). The pen battery should therefore last a month.
Q: Does the system deteriorates by aging?
A: Basically, it does not deteriorate over time. However, malfunctions may occur if the light intensity drops considerably
due to excessive deposition of cigarette tars or dust.
Q: Which are the effects of dirt on the performance?
A: Dirt on the IR filter should be removed because it deteriorates the light intensity.
Q: What would happen if the light sensor elements break down?
A: To ensure normal operation, malfunctioning sensors are detected and removed from processing at the time the
power is turned on. However, as the resolution may drop in the areas where malfunctioning sensors are detected,
detailed drawing is not possible in those areas.
Q: Which is the detection distance from the panel surface?
A: The reaction to a light-shielding object is variable depending on the thickness and positioning of the object, but it is
usually detected at about 5 mm from the panel surface.
Q: Is it possible to write letters using an object other than the special pen?
A: Yes, it is possible. In addition to the PEN mode, a mode is provided to allow writing by anything including a finger
(NORMAL mode). The factory-setting mode is the NORMAL mode.
Q: Writing on the screen using a finger will soil it. Can a glass cleaner or similar detergent be used to clean the screen?
A: Basically, such detergents should not be used. Use the supplied wiping cloth to clean the plasma display. If the
screen is heavily soiled and a detergent is required, use a soft cloth slightly dampened in a solution of a neutral
detergent and water. Wring out the cloth thoroughly, wipe the screen clean and then wipe with a dry cloth.
Q: Is the screen scratch resistant?
A: No, bringing a propelling pencil or other sharp pointed object in contact with the screen will scratch it.
7. Q & A