Notes and Mechanism on Compass Measurements
About compass
The watch uses a built-in magnetic sensor to display north.
North may not be displayed correctly when the watch is placed in a strong magnetic field.
Calibrate the magnetic sensor in the following situations.
❏
When using the watch for the first time
❏
When the measurement result has deviation, or the center hand follows with the watch's rotation
❏
Improving the measurement accuracy
U
“Calibrating the Magnetic Sensor” on page 88
Note:
There are two geographical terms representing north; true north (shown on maps) and magnetic north (indicated by a
compass needle). At the time of purchase, the watch is set to indicate the approximate north in Japan.
See the following for details on true north and magnetic north.
U
“Setting the Magnetic Declination” on page 91
Notes on compass measurements
This product is not intended for taking measurements that requires professional precision. Measurement function
readings are intended for general reference only.
Usage location
You may not be able to perform measurements correctly near magnetic products or in a strong magnetic fields.
Avoid the following locations.
❏
Near magnets (magnetic accessory and so on)
❏
Near electrical appliances (TVs, computers, smart phones, speakers, and so on)
❏
Near metal products (steel desks and so on)
❏
Near vehicles (cars, trains, and so on) or in vehicles
❏
Indoors, especially in buildings made of reinforced concrete and steel
❏
Near high-voltage lines, overhead train lines, and so on
Storage locations
Subjecting the watch to strong magnetism may magnetize the watch, which may affect the accuracy of compass
measurements. Do not place it in the following locations.
❏
Near magnets (magnetic accessory and so on)
❏
Near electrical appliances (TVs, computers, smart phones, speakers, and so on)
MB73 (TR-MB7) User’s Guide
Compass Measurements (COM)
86
Содержание Trume TR-MB7
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