eta 251.272 User Manual

COMMUNICATION TECHNIQUE
TECHNISCHE MITTEILUNG
TECHNICAL COMMUNICATION
ETA SA Manufacture Horlogère Suisse
Customer Service | Bahnhofstrasse 9 | P.O. Box 359 | 2540 Grenchen | Switzerland
Phone +41 (0)32 655 27 77 | Fax +41 (0)32 655 84 30 | etacs@eta.ch | www.eta.ch
13 ¼´´´ ETA 251.272
CT 251272 FDE 471846 07 29.08.2011
13 ¼´´´ Ø 30,00 mm
Hauteur sur mouvement Höhe auf Werk Movement height 4,60 mm
Hauteur sur pile Höhe auf Batterie Height on battery 4,60 mm
Nombre de rubis Anzahl Rubine Number of jewels 22
Fréquence Frequenz Frequency 32’768 Hz
Les travaux de réparation et de révision ne doivent être effectués que par du personnel dûment formé.
Reparatur- und Revisionsarbeiten dürfen nur von ausgebildetem Fachpersonal ausgeführt werden.
The repair and reconditioning work must only be performed by properly trained personnel.

eta 251.272 Specifications

General

Model	ETA 251.272
Category	Watch
Type	Quartz
Jewels	22
Frequency	32, 768 Hz
Functions	Chronograph, Date, Hour, Minute

Summary

General Information and Safety

Eye Protection Requirement

Mandatory eye protection for all operations and work on the movement.

Technical Communication Disclaimer

ETA SA disclaims liability for damages from not observing this technical communication.

Environmental Protection Requirements

Legal provisions for waste treatment and disposal must be observed for all operations.

Explanation of Symbols

Explanation of key symbols used in the document for warnings and advice.

Components List

Component Materials and Visuals

Handsetting and Electronic Module Assembly

Electronic Circuit and Motors Assembly

Chronograph Part Assembly

Calendar Mechanism Assembly

Counter Wheels Configuration

Counter Wheels Interchangeability

Electrical Test Procedures

Electrical Test Parameters

Corrections and Settings

Chronograph Hand Setting

Procedure for setting chronograph hands to zero or real time.

Time and Date Correction

Instructions for correcting the time and date settings.

Indications for Hands

Document Modification History