Seiko ASTRON Basic Owner's Manual

3
BASICOPERATION
46
English
3
BASICOPERATION
47
English
Thiswatch can beset to the precisecurrent time byautomatically
receivingGPSsignals byexposuretobrightlight outdoorsunder an
openskytoadjustthetime.
Inaddition,whenthewatch isconcealedundera sleeveandthedial
isnotexposedtosufficientlightevenifoutdoorsunderanopensky,
thewatch stores thetime of the previoussuccessful manual time
adjustment(ortimezone adjustment),andautomaticallystarts time
adjustmentatthesametime.
※Theautomatictimeadjustmentisperformedatmostonetimeperday.Therefore,
evenifautomatictimeadjustmenthasfailed,thenextautomatictimeadjustmentwill
beperformedthenextdayorthereafter.
※Iftheenergyissufficientlycharged,automaticreceptionwillbeperformedeveryday.
Duringreception,thehandsmoveinthesamemannerasthemanualtimeadjustment.
→Howtomanuallyadjustthetime
P.44〜45
※Thetimezoneisnotadjustedintheautomatictimeadjustment.
Whentheregionwherethewatchisusedischanged,pleasecarryouttimezoneadjustment.Howtoadjustthetimezone
P.40
<Whenitisdifficulttoexposetolightsufficiently>
Evenifoutdoorsunderanopensky,whenthewatchisconcealedunderasleeveinwintertime,etc.,in
anareawherethedaylighthoursareshort,orwhenthewatchisnotlikelytobeexposedtosufficient
lightforalongtimeduetobadweather,thewatchisdesignedtoallowforautomatictimereceptionat
thetimewhenthemanualtimeadjustmentwassuccessfulthelasttime.
Whenthe watchis exposedtothe operatingenvironment above, automatictime adjustmentislikely
tobe successful bymaking manual time adjustmentsuccessful in timeperiodswhere the watchis
frequentlyusedinaplacewhereGPSsignalscanbeeasilyreceivedunderanopensky.
→Howtomanuallyadjustthetime P.45
However,as the watchjudges to start automatictime adjustment takingintoconsideration the following
conditions,thewatchdoesnotnecessarilystartautomatictimeadjustmentbyexposuretobrightlight.
・Chargingstatus
・Pastreceptionstatus
※WhentheindicatorhandpointstoE(low),orinthein-flightmode（ ）,automatictimeadjustmentdoesnotwork.
WhentheindicatorhandpointstoE,chargethewatchbyexposetolight.
※Whentheenergyisreduced,theperiodforwhichautomatictimeadjustmentisnotperformedbecomeslonger.Keepinmindto
chargethewatchregularly.
※Ifthetimezoneadjustmentormanualtimeadjustmentisperformedbeforetheautomatictimeadjustmentisstarted,the
automatictimeadjustmentisnotperformedonthatday.
7
th
6
th
Automatictimeadjustment
Thetypeofreceptionandreceptionresult(successorfailure)ofthelastGPSsignal
receptionisdisplayedfor5seconds.
Whenthereception
hasfailedinanyway,
manuallysetthetime
anddate.
→How to manuallyset
thetime
P.52
→How to manuallyset
thedate

P.53
・  Thereception was
successful.
Usethewatchasitis.
Whenthereception
resultisY
Whenthereception
resultisN
※ Whenapproximately5
days haveelapsedafter
successfulreception,the
receptionresultdisplay
becomesN.
※ Evenunderastatewhere
GPSsignal cannotbe
received,the watch
operateswithquartz
accuracy(atloss/gain±15
secondspermonth).
・Thereceptionhas
failed.
Move to the outdoors
whereGPSsignalscan
beeasily received as
necessary to receive
GPSsignals.
Receptionresultdisplay(Checkthatreceptionwassuccessful)
12
PressButtonBonce
andthenreleaseit
Thesecondhandand
indicatorhanddisplay
thereceptionresult.
※WhenButtonBiskept
pressed,thewatch
enterstheManualtime
adjustmentoperation.
Checkthatreceptionwassuccessful(within5sec)
Thesecond hand displays the
receptionresult(success/failure).
Theindicatorhanddisplayswhichof
thelast GPSsignal receptionwas
performed fortime adjustmentor
timezoneadjustment.
Secondhand:Reception
result(success/failure)
Result Successful Failed
Display
B
P
C
J
J
Y
B
P
C
J
J
Y
Position
Y
12-sec
position
N
18-sec
position
※After5secondshave
elapsedorwhenButton
Aispressed,thewatch
returnstothetime
displaymode.
Indicatorhand:
Receptionmethod (manualtime
adjustmentortimezoneadjustment)
Type
1
(Manualtime
adjustment)
4+
(Timezone
adjustment)
Display
※Thetimeatwhichthewatch returns
tothetimedisplaymodevaries
dependingonthepositionofthe
indicatorhand.
Press
and
Release
Press

Seiko ASTRON Specifications

Frequency

frequency of crystal oscillator	32, 768 Hz
loss/gain (monthly rate)	±15 seconds

Operating Environment

operational temperature range	−10°C to +60°C
normal temperature range	5°C to 35°C

Power

power source	Secondary battery, 1 piece
duration of operation (fully charged)	Approximately 6 months
duration of operation (power save activated)	Approximately 2 years