Schiller CARDIOVIT AT-2 How to use

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
AT-2
6-Channel
ECG unit
Service Handbook
SCHILLER AG
Altgasse 68
CH-6340 Baar, Switzerland
Phone: + 41 41 766 42 42
Fax: + 41 41 761 08 80
Home page: http://www.schiller-ag.ch/
June 1998 Article Number: 2.540 010
Operator Manual
Cardio Menu

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
AT-2 Service Handbook
Article Number 2. 540 010
Issue 1 : February 1996
Issue 2 : June 1998 , Update and revision to incorporate latest hardware and software.
Issue 2.1: November 1998, minor corrections incorporated including new schematic.
Associated Documents
Guide to the SCHILLER Interpretation
and Measurement Program E/ D/ F Article No. 2. 510 179
SCHILLER AT-2 User Guide - English / German / French Article No. 2. 510 100
SCHILLER AT-2 User Guide - Italian / Spanish / Portuguese Article No. 2. 510 200
Copyright © 1998 by SCHILLER AG
Windows is a trademark of Microsoft Corporation.

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
DECLARATION OF CONFORMITY
Diagnostic System: Cardiovit AT-2
Serial numbers starting with: 040.
Year of manufacture: 1997 Onwards
We, the undersigned, hereby declare that the medical device (class IIa) specified
above conforms with the essential requirement listed in Annex 1 of EC Directive
93/42/EEC.
This declaration is supported by:
Certificate of approval No.: 11425-01 ISO 9001 (Rev.1994) EN 46001 by SQS
45112-60-01 ISO 9001/08.94 EN 46001 / 12.93 by DEKRA and
45112-16-01 Annex II, Section 3 of the Directive 93/42/EEC
4T !"$
Baar (Switzerland) Dated 20.05.1998
J. J. Schmid Markus Bütler
Research & Development Manager Quality Assurance Manager

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
Where to Obtain Service
America WELCH ALLYN SCHILLER Inc., 7420 Carroll Road, San Diego, CA 92121.
Telephone: [phone] Fax: [phone]
www.welchallyn.com
Asia Pacific SCHILLER Asia Pacific, 10A Jalan SS 3/33, Taman University, 47300 Petaling Jaya, Malaysia
Telephone: [phone]
Fax: [phone]
Austria SCHILLER Handelsgesellschaft GmbH Medizintechnik, Kampmüllerweg 24, A-4044 Linz,
Austria.
Telephone: [phone]
Fax: [phone]
France SCHILLER France S.A, Zac des Luats 58, Route de Champigny, F-94350 Villiers Sur Marne,
France.
Telephone: [phone]
Fax: [phone]
Germany SCHILLER Medizintechnik GmbH, Rudolf Diesel Strasse 14, D-85521 Ottobrunn, Germany.
(EU-Bevollmächtiger) Telephone: [phone]
Fax: [phone]
Hotline: [phone]
India Schiller Healthcare India Pvt. Ltd. Kalpatarn Chambers, Nanik Motwane Lane, Ground Floor,
Fort, Mumbai 400 023
Telephone: [phone]
Fax: [phone]
Italy ESAOTE SPA (SCHILLER), Via di Caciolle 15, I-50125 Firenze, Italy.
Telephone: +39 / 055 4229 201
Fax: +39 / 055 4229 208
Switzerland SCHILLER Reomed AG, Riedstrasse 14, CH-8953 Dietikon, Switzerland.
Telephone: [phone]
Fax: [phone]
All other SCHILLER AG, Altgasse 68, CH-6340 Baar, Switzerland.
Countries Telephone: + 41 41 766 42 42 Fax: + 41 41 761 08 80
Home Page: http://www.schiller-ag.ch/

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
Warranty
Disclaimer
The information in this guide has been carefully checked for reliability; however no guarantee is
given as to the correctness of the contents and SCHILLER makes no representations or warranties
regarding the contents of this manual. We reserve the right to revise this document and make
changes in the specification of the product described within at any time without obligation to
notify any person of such revision or change.
Trademarks
SCHILLER and AT-2 are registered trademarks of SCHILLER AG. All trademarks are the property
of their owners.
Copyright Notice
© Copyright 1998 by SCHILLER AG. All rights reserved. You may not reproduce, transmit,
transcribe, store in a retrieval system or translate into any language, in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, any part of
this publication without express written permission of SCHILLER AG.
Terms of Warranty
The SCHILLER AT-2 is warranted against defects in material and manufacture for the duration
of one year (as from date of purchase). Excluded from this guarantee is damage caused by an
accident or as a result of improper handling. The warranty entitles free replacement of the defective
part. Any liability for subsequent damage is excluded. The warranty is void if unauthorized or
unqualified persons attempt to make repairs.
In case of a defect, contact your dealer or the manufacturer.
The manufacturer can only be held responsible for the safety, reliability, and performance of the
apparatus if:
* assembly operations, extensions, readjustments, modifications, or repairs are carried out by
persons authorized by him, and
* the AT-2 and approved attached equipment are used in accordance with the manufacturers
instructions.
THERE ARE NO EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND BEYOND THE
WARRANTIES HEREINABOVE SET FORTH. SCHILLER MAKES NO WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO
THE PRODUCT OR PARTS THEREOF.

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
Safety Notices
TO PREVENT ELECTRIC SHOCK DO NOT DISASSEMBLE THE UNIT. NO
SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY.
DO NOT USE THIS UNIT IN AREAS WHERE THERE IS ANY DANGER OF EXPLOSION
OR THE PRESENCE OF FLAMMABLE GASES SUCH AS ANAESTHETIC AGENTS.
THIS PRODUCT IS NOT DESIGNED FOR STERILE USE.
SWITCH THE UNIT OFF BEFORE CLEANING AND DISCONNECT FROM THE MAINS.
DO NOT, UNDER ANY CIRCUMSTANCES, IMMERSE THE UNIT OR CABLE
ASSEMBLIES IN LIQUID.
DO NOT OPERATE THE UNIT IF THE EARTH CONNECTION IS SUSPECT OR IF THE
MAINS LEAD IS DAMAGED OR SUSPECTED OF BEING DAMAGED.
DO NOT USE HIGH TEMPERATURE STERILISATION PROCESSES (SUCH AS
AUTOCLAVING). DO NOT USE E-BEAM OR GAMMA RADIATION STERILISATION.
DO NOT USE SOLVENT CLEANERS
USE ONLY ACCESSORIES AND OTHER PARTS RECOMMENDED OR SUPPLIED BY
SCHILLER AG. USE OF OTHER THAN RECOMMENDED OR SUPPLIED PARTS MAY
RESULT IN INJURY INACCURATE INFORMATION AND/ OR DAMAGE TO THE UNIT.
THIS UNIT COMPLIES WITH EMC REGULATIONS FOR MEDICAL PRODUCTS WHICH
AFFORDS PROTECTION AGAINST EMISSIONS AND ELECTRICAL INTERFERENCE.
HOWEVER SPECIAL CARE MUST BE EXERCISED WHEN THIS UNIT IS USED WITH
HIGH FREQUENCY EQUIPMENT.
IT MUST BE ENSURED THAT NEITHER THE PATIENT NOR THE ELECTRODES
(INCLUDING THE NEUTRAL ELECTRODE) COME INTO CONTACT WITH OTHER
PERSONS OR CONDUCTING OBJECTS (EVEN IF THESE ARE EARTHED).
THERE IS NO DANGER WHEN USING THE ECG UNIT FOR A PACEMAKER PATIENT
OR WITH SIMULTANEOUS USE OF OTHER ELECTRICAL STIMULATION
EQUIPMENT. HOWEVER, THE STIMULATION UNITS SHOULD ONLY BE USED AT A
SUFFICIENT DISTANCE FROM THE ELECTRODES. IN CASE OF DOUBT, THE
PATIENT SHOULD BE DISCONNECTED FROM THE RECORDER.

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
Safety Notices
THIS UNIT IS CF CLASSIFIED ACCORDING TO IEC 601-1. THIS MEANS
THAT THE PATIENT CONNECTION IS FULLY ISOLATED AND DEFIBRILLATION
PROTECTED. SCHILLER CAN ONLY GUARANTEE PROTECTION AGAINST
DEFIBRILLATION VOLTAGE, HOWEVER, WHEN THE ORIGINAL SCHILLER PATIENT
CABLE IS USED.
BEFORE USING THE UNIT, ENSURE THAT AN INTRODUCTION REGARDING THE
UNIT FUNCTIONS AND THE SAFETY PRECAUTIONS HAS BEEN PROVIDED BY A
SCHILLER REPRESENTATIVE.
THE GUIDELINES FOR PATIENT ELECTRODE PLACEMENT ARE PROVIDED AS ON
OVERVIEW ONLY. THEY ARE NOT A SUBSTITUTE FOR MEDICAL EXPERTISE.
THIS UNIT IS PROVIDED FOR THE EXCLUSIVE USE OF QUALIFIED PHYSICIANS OR
PERSONNEL UNDER THEIR DIRECT SUPERVISION. THE NUMERICAL AND
GRAPHICAL RESULTS AND ANY INTERPRETATION DERIVED FROM A RECORDING
MUST BE EXAMINED WITH RESPECT TO THE PATIENTS OVERALL CLINICAL
CONDITION. THE RECORDING PREPARATION QUALITY AND THE GENERAL
RECORDED DATA QUALITY, WHICH COULD EFFECT THE REPORT DATA
ACCURACY, MUST ALSO BE TAKEN INTO ACCOUNT.
IT IS THE PHYSICIANS RESPONSIBILITY TO MAKE THE DIAGNOSIS OR TO OBTAIN
EXPERT OPINION ON THE RESULTS, AND TO INSTITUTE CORRECT TREATMENT
IF INDICATED.

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
What's in this book
THE SERVICE PHILOSOPHY FOR ALL SCHILLER UNITS IS FAULT FINDING TO
MODULE LEVEL ONLY. THE PURPOSE OF THIS BOOK IS TO PROVIDE ALL THE
INFORMATION NECESSARY TO ENABLE THE SERVICE ENGINEER TO EFFICIENTLY
LOCATE AND REPLACE A FAULTY MODULE. THIS BOOK ASSUMES NO DETAILED
KNOWLEDGE OF THE AT-2 BUT DOES REQUIRE THAT THE SERVICE ENGINEER IS
FAMILIAR WITH STANDARD WORKSHOP PRACTICES.
The book is divided into the following chapters:
Chapter 1 - Operating Elements
The purpose of this chapter is to provide an easy reference for all the main operator functions and
to give a basic introduction to the AT-2. This chapter gives details of the operator controls with
the operation and function of each key briefly explained. The information in this chapter provides
a background to the operating functions only. Complete operating information is provided in the
SCHILLER AT-2 User Guide.
Chapter 2 - Functional Overview
This chapter provides a functional overview of the AT-2. The description is supported by functional
block diagrams.
Chapter 3 - Fault Diagnosis
This chapter provides a guide to locate a fault to module level. The diagnostics are presented in
a logical sequence of fault finding algorithms and procedures. Illustrations are provided to support
the text where needed.
Chapter 4 - Module Removal and Replacement
This chapter gives an overview of the physical construction of the AT-2 with the main physical
attributes of the unit briefly described. The physical description is supported by illustrations
showing the internal location of all modules. Removal and replacement instructions for all
removable modules are also provided in this chapter. Each procedure is autonomous with details
of tools, jumper settings, adjustments and settings or special requirements that are required before
and after replacement. Functional checks that must be carried out after replacing a module are
also provided.
Chapter 5 - Adjustments
This chapter provides all adjustments and settings. Also detailed in this chapter are basic functional
test procedures that can be performed to check the functioning of the unit.
Chapter 6 - Spare Parts
This chapter provides the part numbers and reordering information for all replaceable modules.
Also included in this chapter are details of any special test equipment or special tools required for
adjustment or fault finding procedures.

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
What's in this book
Chapter 7 - Technical Data
The full technical specification of the AT-2 is given in this chapter.
Chapter 8 - Glossary
This chapter explains all the acronyms and signal titles used in this book and in the AT-2 circuit
diagrams.
Index
Circuit Diagrams & Board layouts
The circuit diagrams and component layouts are provided for all boards. These details are provided
for information only.
General Symbols
We need your help
The philosophy of SCHILLER is one of continuous
improvement. Our aim is to provide the user with the most
up-to-date information and the latest technological
developments.
Your suggestions and comments are welcome on all
SCHILLER documentation. Please contact the SCHILLER
Technical Documentation Department.
Fax No: + 41 (0)41 761 03 34

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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998