This document introduces the digital compass/thermometer function of CASIO watch 3157-1. The watch is equipped with a built-in magnetic orientation sensor to determine the direction and display one of the 16 directions on the screen. In addition, the watch also has a built-in temperature sensor for temperature measurement.
This manual provides step‑by‑step instructions for operating the Casio 3157 watch’s digital compass and temperature sensor. It covers entering and exiting the function screen, how measurements are taken, and how to interpret the displayed direction and temperature values.
Additional sections describe time‑setting, daylight‑saving adjustments, world‑time, stopwatch, countdown timer, alarm settings, lighting, sensor calibration, and safety warnings for outdoor use. This manual is written in Chinese.
| Temperature display range | -10.0 °C to 60.0 °C |
|---|---|
| Temperature display resolution | 0.1 °C (or 0.2 °F) |
| Direction measurement interval | 1 second per measurement |
| Measurement duration | 10 seconds per session |
| Direction error tolerance | ±11 degrees |
可能是因為在強磁場附近（如家用電器、大型金屬結構或高壓電線）測量，或在列車、船舶等環境中。
附近的高壓電線產生的磁場會干擾手錶的磁方位感測器。
電視機、個人電腦、揚聲器等家用電器會產生磁干擾，影響測量結果。