ETA 251.242 User Manual
Chronograph with alarm
E
A
B
D
Pushbutton B
Pushbutton C
Pushbutton A
Pushbutton D
30 minutes
counter
1/10 second timer
+ alarm status
Small second hand
Minute hand
Alarm hand
*
Setting
crown
60 seconds chrono
and alarm minute timer
DISPLAY
Date indicator
Hour hand
SETTING THE TIMERS
Crown in position 2
HAND-SETTING AND SYNCHRONISATION
Crown in position 3
Synchronising the time of the internal clock with
the analogue time and winter/summer time.
NOTE:
Press and hold (>1 second), to generate a direct movement
of the hands (quick correction).
Wait that the small second hand has reacked 12 o'clock
before holding the sething time-crown in position 3.
Turn the crown
clockwise or
anticlockwise.
E.g.: 7.15
DATE AND TIME ZONE
Crown in position 2
NOTE:
The date is adjusted every time the hand goes past
midnight.
When changing time zones, you must ensure that the
internal clock time is synchronised with the analog time.
Turn the crown
clockwise or
anticlockwise..
NOTES:
All the hands of the timers must be at 12 o'clock.
Pressing the pushbuttons briefly will move the hands
forward step by step.
Press and hold (>1 second) to generate a direct movement
of the hands (quick correction).
Hours
synchronisation
Minutes
synchronisation
Winter
time
Summer
time
A
D
B
C
Alarm
60 seconds
chrono timer
1/10 second
timer
30 minutes
counter
A
D
B
C
ALARM
ADJUSTING THE ALARM TIME
Crown in position 1
1
Mode
selection
3
Alarm minute
2
Alarm hour
4
Quit
mode
to order of functions
4
1
NOTES:
The 30 minutes timer is placed in "SET ALARM" position.
Pressing the pushbuttons briefly will move the hands forward
step by step.
Press and hold (>1 sec.) to generate a direct movement of
the hands (quick correction).
After 15 seconds, the "Set Alarm" mode is deactivated.
Chronograph
with alarm
ETA 251.242
317 240 - 02/00
*
Crown in position 3 = movement stop
to order of functions
CHRONOGRAPH
SIMPLE FUNCTION
Crown in position 1
3
1
1
STOP
Read time
- 2 minutes
- 15 seconds
- 4/10 second
2
NOTE:
For all chronograph functions- RESET TO ZERO - The hands
of the 60 seconds chrono and 30 minutes timers are reset
to zero. The hand of the 1/10 second timer indicates the
alarm status.
START / STOP
3
Reset to zero
A
B
ALARM
ON/OFF STATUS AND TESTING THE
STRIKING-MECHANISM
Crown in position 1
CHRONOGRAPH
NOTES:
The alarm device is alternately activated (ON) or deactivated
(OFF) .
A tone indicates when the alarm is activated (ON).
These functions cannot be used if timing is in process or
stopped.
Striking-
mechanism
test
Status change
(ON/OFF)
B
SPLIT
Read time X
- 3 minutes
- 15 seconds
- 4/10 second
2
C
CHRONOGRAPH
FLY-BACK FUNCTION
New automatic timing
Crown in position 1
A
B
C
to order of functions
CHRONOGRAPH
ADD FUNCTION
Crown in position 1
X
1
1
START
2
STOP
read
3
RESTART
4
STOP
read
X
Reset to zero
A
B
to order of functions
CHRONOGRAPH
SPLIT FUNCTION - INTERMEDIATE TIMES
Crown in position 1
5
1
1
START
3
RESTART
(fly-back)
A
B
STOP
Read last time
- 5 minutes
- 35 seconds
- 6/10 second
4
5
RESET TO ZERO
A
B
SPLIT
Read time T1
- 5 minutes
- 5 seconds
- 9/10 second
2
to order of functions
SPLIT FUNCTION - INTERMEDIATE TIMES (cont'd)
Crown in position 1
Simultaneous double-timing (T1, T2)
5
1
1
START (T1, T2)
A
B
A
B
Read time T2
- 10 minutes
- 15 seconds
- 4/10 second
4
3
STOP T2 (stores T2)
5
RESET TO ZERO
1
START
4
RESET
TO ZERO
2
FLY-BACK
3
STOP
to order of functions
4
1
NOTES:
The FLY-BACK function can be activated only during timing
either current or stopped.
The hands of the 30 minutes (time>1 minute), 60 seconds
Chrono and 1/10 second timers are reset to zero and a new
timing automatically starts.