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Data is transferred between watches or between the watch and personal computer using
the data communication functions. There are two ways for transferring data: the first
involves using the infrared communication interface, and the second involves using the
communication unit (USB communication interface) function.
1. Infrared Communication
The infrared communication function of this watch uses an infrared (Ir) beam for
communication in the same manner as the remote controllers of television sets and VCRs.
Communication is performed between watches or between the watch and a personal
computer by transmission and reception of this infrared beam by their respective infrared
transmission/reception units.
* The infrared communication function of this watch complies with the wrist watch infrared
communication standard IrWW (IrDA for Wrist Watches).
A. Communication Range
The maximum distance infrared communication can be
performed with this watch is 15 cm (5.9 inch) in the
vertical direction to the infrared transmission/reception
unit. Although directivity has a margin of about ±15°, the
communication distance becomes shorter as the angle
becomes wider.
* Remove any obstacles between the watches or between the watch and the personal computer
during infrared communication.
* Data may not be able to be transferred or an error may occur if other infrared communication
devices are nearby during infrared communication.
* Avoid moving the watch as much as possible during infrared communication.
* Perform infrared communication within a temperature range of +10°C to +35°C (50°F to 95°F).
Data may not be able to be transferred if outside this range.
* Data may not be able to be transferred or an error may occur if infrared communication is
performed directly beneath a fluorescent lamp or in direct sunlight.
* When transferring data between the watch and a personal computer using infrared
communication, the personal computer also must be set to be able to use infrared
communication. Refer to the instruction manual of the personal computer for information on
setting the personal computer for infrared communication.
71
Data Communication Functions
Max. 15 cm
(5.9 inch)
Infrared
transmission
/reception unit