Setting The Time And Date By Receiving A Radio Signal - Seiko 7B27 Instructions Manual

Q & A for the world time function
Ｑ： W ill the watch be automatically set to the local time when it is moved to a place outside Japan
in a different time zone?
Ａ ： T he watch will not be automatically set to the local time if it is just moved to a place outside
Japan in a different time zone. Select the time zone where you are when you are abroad.
If you select the time zone, the watch is automatically set to the local time.
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(The time difference can be adjusted in increments of 1 hour.)
After selecting the time zone, if it is within the reception range of radio signals, you can leave
the watch to receive the radio signal to set it to the precise time.
(The radio signal transmitting station can be changed by selecting a time zone.)
Ｑ： W hen returning to Japan from overseas, is the time automatically set to Japan time?
Ａ ： J ust moving cannot adjust the Japanese local time. After selecting the time zone, radio signal reception is not
performed. When wearing a watch in Japan, set to Japan time by use of the time zone adjustment function.
Ｑ： T he hands stop during operation of time zone setting, therefore, does a time lag occur?
Ａ ： T he internal circuit stores the time, therefore, no time lag occurs.
Ｑ： W hen a time zone for regions out of the radio signal reception range is set, the watch will not
receive a radio signal. How is the accuracy of the watch at that time?
Ａ ： T he watch has an accuracy of a normal quartz watch in that case. (Monthly rate: ±15 seconds)
Ｑ： H ow is adjustment made to a local time with a time difference of 15 minutes or 30 minutes?
Ａ ： T he time can be adjusted on a 1 hour basis by use of the time difference adjustment function.
When adjusting to a local time with a time difference of 15 minutes or 30 minutes.
→ How to manually set the time P.122
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Setting the time and date by receiving a radio signal

■ Mechanism of radio signal reception
The radio-controlled watch displays the precise time and date by automatically receiv-
ing and synchronizing itself with the radio signal of an official standard frequency.
The standard frequency for time information comes from a "cesium atomic clock," which
maintains the ultra-precision of a one-second difference about every 100,000 years.
Transmitting
Station
Official standard
frequency
Cesium
Atomic Clock
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Radio-controlled watch
Receive radio signals
through the antenna inside
the watch
↓
Analyze time information
↓
Display the current time
and date
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