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94
L538 Quartz chronographs
3-position crown
Simple function
In this function, with the crown in position 1, push-piece A is used to
switch the chronograph status between START and STOP.
After START is pressed, the counter hands will show the measured time.
The 1/10
th
of a SECOND counter hand will not turn.
After STOP has been pressed, the 60-SECOND and 30-MINUTE counter
hands will stop running. The 1/10
th
of a SECOND counter hand displays
the value in tenths of a second as it runs.
To measure another time, press push-piece B to return the counters
to zero (RESET). All the hands will quickly return clockwise to their
start point, and the chronograph will switch back to watch mode.
Time setting and corrections
Unscrew the crown (if necessary), and pull it out to its furthest
position 3. The watch will stop and the hour and minute hands can
be adjusted for the time setting.
Hour, minute and seconds correction
Crown in position 3: the 3 counter hands will move to 12 o'clock.
Turn the crown to correct the hour and minute hands. Turn the crown
either way to correct the minute. Then push the crown fully back in
again (pos. 1), and screw it in.
To synchronise the watch with an ofcial time signal (radio, telephone,
etc.), pull the crown to its furthest position 3, at the moment when
the small seconds hand is at 60, then push the crown back in again
fully (pos. 1) at the time signal, and screw it back in.
The calendar changes every time the hour hand passes midnight.
Changing the time zone and the date
Unscrew the crown (if necessary), and pull it out to the intermediate
position 2. The hour hand will make one-hour jumps, enabling
quick time zone adjustments. The hour hand can be moved in either
direction without affecting the minute and seconds hands setting.
Turning the crown through 24 hours will cause a date change. The
crown can be turned either way. Then push the crown fully back in
again (pos. 1), and screw it back in.
Correct time zone and the date every time the
hour hand passes midnight.
Position the hands to their start point
Time setting with stop seconds
Note: do not leave the time-setting crown in position 2 for
more than 20 minutes (time loss).
2 31
Working position
Book_I.indb 94 13.08.19 10:57
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