Operation Manual

28 29
English
Self-winding split-seconds chronograph
Operating instructions2
• Pusher B: reset (after a stop).
Note: the chronograph must always be stopped before the zero
resetting function is used. Never push the chronograph’s two pushers
(A and B) simultaneously (calibre 3612).
Chronograph functions with split-seconds:
The split-seconds function allows split times to be recorded whilst the
chronograph is running.
1. Start the chronograph by pressing pusher (A) (start).
2. To record a split time, press pusher (C). The split-seconds hand (D)
stops, indicating the split time, whilst the chronograph continues
running.
NB: the split time should be read immediately, since the chrono-
graph totalisers for hours (G), minutes (E) and seconds (F) continue
to measure the elapsed time.
For calibre 3600 only: whilst the chronograph is running, do not
leave the split-seconds hand (D) stopped any longer than is neces-
sary to read the split time, otherwise the functioning of the split-
seconds mechanism may be affected.
3. Press pusher (C) for the split-seconds hand to catch up with the
chronograph seconds hand (F).
4. To record a new split time, start from step 2 above.
5. Press pusher (A) to stop the chronograph.
6. Press pusher (B) to reset.
NB: the split-seconds hand (D) must have caught up with the chro-
nograph seconds hand (F) as explained in step 3 before the chrono-
graph mechanism is reset/zeroed.
Í
Í
Perpetual calendar
Operating instructions2
Í
CALIBRE 1680 (fig. V)
k
The particularity of the Gregorian calendar is that one day (29th
February) is added to the year every four years to compensate for the
length of the solar year, which is 365.242192 days, or almost 365 1/4
days. Such years are called leap years and their number (for example
1996) is divisible by 4.
As the compensation of one day every four years is too much, every
100 years (2100, 2200, …) the year is not a leap year, even though it
is divisible by four. However, even this is not totally sufficient, since it
leaves an error of one day every 400 years. Therefore, if the number
of the year is divisible by 400 it is a leap year, as was the case with
the year 2000. Because of this, the perpetual calendar of your watch
is set to function correctly until 2100.
Thermocompensation
This movement is 10 times more precise than a conventional quartz
movement thanks to an electronic module that compensates for the
effects of temperature on the movement’s operation.
The crown has 3 positions:
Watch functions:
1.1.
Neutral position 1, normal when the watch is worn: in this
position, the crown ensures that the watch is water-resistant.
1.2. Setting the hands, minutes and seconds:
Pull the crown out to position 3 when the second hand is at
12 o’clock. The seconds hand will stop. Turn the crown forwards
or backwards to set the minute hand. Push the crown back into
position 1 to coincide with a given time.
NB: To avoid inadvertently changing the date when setting
the time, it is important to always follow point 1.2 and then
point 1.3.
OMEGA_V12-I.indb Abs1:28-Abs1:29OMEGA_V12-I.indb Abs1:28-Abs1:29 28/12/09 18:30:3428/12/09 18:30:34