Operation Manual
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Chronograph ISA 8161/202
(1 crown/2 pushers)
SETTING THE TIME
1. Pullcrownouttoposition3.
2. Settimebyturningthecrown.
3. Pushthecrownbacktoposition1.
SETTING THE DATE
1. Pullcrownouttoposition2.
2. Setdatebyturningthecrown.
3. Pushthecrownbacktoposition1.
RESETTING CHRONOGRAPH (after battery exchange or mishandling only)
1. PressbothAandBpushersatthesametime.
2. NextpressBtoresettheminutes.
3. ThenpressAtoresetseconds.
4. ToexitpressbothAandBpushersatthesametime.
MEASURING CUMULATIVE TIMES
1. PressApushertostart.
2. PressApushertostop.
3. PressBpushertoreset.
MEASURING SPLIT TIMES
1. PressApushertostart.
2. PressBpushertosplit.
3. PressBpushertorestart.
4. PressApushertostop.
5. PressBpushertoreset.
(A)
(1)(2) (3)
(B)
MINUTEHAND
SECONDHAND
DATE
Chronograph ISA 8171/201
TIME AND DATE SETTING
1. Pullcrownouttoposition2.
2. Rotatecrownclockwiseuntilthepreviousday’sdateisshowninthedatewindow.
3. Pullcrownouttoposition3.
4. Rotatecrownclockwiseuntilthecorrectdateisshowninthedatewindow.
5. Continuetorotatecrowntosetcorrectam/pmtime.
6. Returncrowntoposition1.
NOTE: Do not set the date between 9:00 p.m. and 12:30 a.m. to ensure accuracy.
CHRONOGRAPH OPERATION
1. PressAtostart/stopthechronograph.
2. PressBtorestart/reset.
NOTE: After 2 hours of continuous running, the chronograph will automatically stop and reset to save the battery.
SPLIT TIME
1. PressBwhilethechronographisrunning.
2. PressBagaintoreturntothechronograph.
3. PressAtofinalizetiming.
4. PressBtoreset.
CHRONOGRAPH ZERO RESET
1. Ifeitherofthechronographhandsisnotatthezero(12:00)position,pullcrownouttoposition2.
2. PressBtoresetchronographminutehand.EachpressofBwilladvancethechronographminutehandbyoneincrementor
pressandholdBforfastadvance.
3. PressAtoresetchronograph1/5secondhand.EachpressofBwilladvancethechronograph1/5secondhandbyone
incrementorpressandholdBforfastadvance.
(B)
(A)
(1) (2)
(3)
CHRONOGRAPH
1/5SECONDHAND
SECONDHAND
CHRONOGRAPH
MINUTEHAND
DATE