ETA 251.242 User Manual

Chronograph with alarm

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background image

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.

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