Operation Manual

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Chronograph ISA 8161/202
(1 crown/2 pushers)
SETTING THE TIME
1. Pullcrownouttoposition3.
2. Settimebyturningthecrown.
3. Pushthecrownbacktoposition1.
SETTING THE DATE
1. Pullcrownouttoposition2.
2. Setdatebyturningthecrown.
3. Pushthecrownbacktoposition1.
RESETTING CHRONOGRAPH (after battery exchange or mishandling only)
1. PressbothAandBpushersatthesametime.
2. NextpressBtoresettheminutes.
3. ThenpressAtoresetseconds.
4. ToexitpressbothAandBpushersatthesametime.
MEASURING CUMULATIVE TIMES
1. PressApushertostart.
2. PressApushertostop.
3. PressBpushertoreset.
MEASURING SPLIT TIMES
1. PressApushertostart.
2. PressBpushertosplit.
3. PressBpushertorestart.
4. PressApushertostop.
5. PressBpushertoreset.
(A)
(1)(2) (3)
(B)
MINUTEHAND
SECONDHAND
DATE
Chronograph ISA 8171/201
TIME AND DATE SETTING
1. Pullcrownouttoposition2.
2. Rotatecrownclockwiseuntilthepreviousday’sdateisshowninthedatewindow.
3. Pullcrownouttoposition3.
4. Rotatecrownclockwiseuntilthecorrectdateisshowninthedatewindow.
5. Continuetorotatecrowntosetcorrectam/pmtime.
6. Returncrowntoposition1.
NOTE: Do not set the date between 9:00 p.m. and 12:30 a.m. to ensure accuracy.
CHRONOGRAPH OPERATION
1. PressAtostart/stopthechronograph.
2. PressBtorestart/reset.
NOTE: After 2 hours of continuous running, the chronograph will automatically stop and reset to save the battery.
SPLIT TIME
1. PressBwhilethechronographisrunning.
2. PressBagaintoreturntothechronograph.
3. PressAtofinalizetiming.
4. PressBtoreset.
CHRONOGRAPH ZERO RESET
1. Ifeitherofthechronographhandsisnotatthezero(12:00)position,pullcrownouttoposition2.
2. PressBtoresetchronographminutehand.EachpressofBwilladvancethechronographminutehandbyoneincrementor
pressandholdBforfastadvance.
3. PressAtoresetchronograph1/5secondhand.EachpressofBwilladvancethechronograph1/5secondhandbyone
incrementorpressandholdBforfastadvance.
(B)
(A)
(1) (2)
(3)
CHRONOGRAPH
1/5SECONDHAND
SECONDHAND
CHRONOGRAPH
MINUTEHAND
DATE