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ASTRON 8X53 GPS SOLAR
BASIC OPERATION (HOW TO SET THE TIME/HOW TO RECEIVE GPS SIGNALS, ETC.)
CONTENTS
4
Leap second (Automatic leap second reception function)
Receiving Leap Second Data
When the GPS signal reception is performed on or
after December 1st and June 1st, the indicator hand
displays as shown at the right.
When the leap second data reception is completed,
the indicator hand returns to display the charging
status. Use the watch as it is.
The leap second data reception is performed every half a year regardless of leap second addition.
It takes up to 18 minutes to receive the leap second data.
Leap second
The leap second is to compensate for deviations from the universal
time (UT) which is astronomically determined and the “International
Atomic Time (TAI).
“1 second” may be added (deleted) once a year or every few years.
Automatic leap second reception function
A leap second is automatically added by receiving “leap second
data” from GPS signals at the time of leap second addition (delete).
“Leap second data” includes information about future leap second addition and current
leap second data.
When GPS signals are received under the following conditions, the leap second
data reception is also started.
• GPS signals are received after the system reset
• GPS signals have not been received for a long time
• Leap second data reception has failed
(Leap second data reception is performed again during the next GPS signal reception. It is repeated
until the leap second data reception is successful.)
Receiving the leap second data
