Cardiovit AT-10 ECG and Spirometry Unit Service Handbook April 2002

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

AT-10 Service Handbook Article Number 2. 540005

Issue 1:

January 1993

Issue 2:

July 1998

Issue c:

April 2002

Associated Documents Guide to SCHILLER Interpretation and Measurement Program E / D / F

Article No.

2.510179

SCHILLER AT-10 USER GUIDE - English

Article No.

2.510127

SCHILLER AT-10 USER GUIDE - German

Article No.

2.510126

SCHILLER AT-10 USER GUIDE - French

Article No.

2.510128

© Copyright 2002 by SCHILLER AG ii

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Where to Obtain Service

WELCH ALLYN SCHILLER Inc., 7420 Carroll Road, San Diego, CA , US-92121-2334 USA USA / Canada

Tel.: +1 858 635 6023

Fax : +1 858 635 6611

Home Page : www.welchallyn.com

Asia Pacific

SCHILLER Asia Pacific, 10 Jalan SS 3/33, Taman Universiti, 47300 Petaling Jaya, Selangor, Malaysia Tel.: + 603 7877 5336

Fax : + 603 7877 5744

SCHILLER HmbH, Kampmüllerweg 24, A-4044 Linz, Austria Austria Tel.: + 43 732 709 90

France

Fax : + 43 732 757 000

SCHILLER Medical S.A, BP 50, 19, Avenue de la Gare, F-67162 Wissembourg / Cedex, France Tel.: +33 3 88 63 36 00

Germany (EU authorized representative)

India

Fax : +33 3 88 94 12 82

SCHILLER Medizintechnik GmbH, Rudolf-Diesel Strasse 14, D-85521 Ottobrunn, Germany Tel.: + 4989 629 981 0

Fax : + 4989 609 509 0

SCHILLER Healthcare India Pvt. Ltd.,D.C.Silk Mills Compound, 'A' Wing, 1st floor, 5, Chunawala Estate, Kondivitta Lane, Andheri - Kurla Road, Andheri (E, Mumbai - 400 059, India Tel.: + 9122 826 3520

Fax : + 9122 826 3525

ESAOTE Spa (SCHILLER), Via di Caciolle 15, I-50127 Firenze, Italy Italy Tel.: + 39055 4229 201

Fax : + 39055 4229 208

SCHILLER Reomed AG, Riedstrasse 14, CH-8953 Dietikon, Switzerland Switzerland Tel.: +411 744 3000

Fax : + 411 740 3710

SCHILLER AG, Altgasse 68, CH-6341 Baar, Switzerland All other countries

Tel.: + 4141 766 4242

Fax : + 4141 761 0880

Home Page : www.schiller.ch

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SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

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-10 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-10 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, send the apparatus to your dealer or directly to 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 unit and approved attached equipment is 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-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

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. IF THE DISPLAY IS DAMAGED, A LEAKAGE OF FLUID MAY OCCUR. DO NOT INHALE THE VAPOUR FROM THIS FLUID AND AVOID CONTACT WITH MOUTH AND SKIN. IF CONTACT IS MADE, CLEAN CONTAMINATED AREA IMMEDIATELY WITH FRESH WATER. 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. THE AT-10 COMPLIES WITH EMC REGULATIONS FOR MEDICAL PRODUCTS WHICH AFFORDS PROTECTION AGAINST EMISSIONS AND ELECTRICAL INTERFERENCE. HOWEVER SPECIAL CARE MUST BE EXERCISED WHEN THE AT-4 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-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

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. WHEN NON-MEDICAL DEVICES ARE CONNECTED TO THE RS-232 INTERFACE ENSURE THAT BOTH UNITS ARE SECURELY CONNECTED TO THE SAME EARTH POTENTIAL. WHEN OPERATING THE UNIT ON BATTERY AND SIMULTANEOUSLY USING NONMEDICAL DEVICES, THE RS-232 INTERFACE MUST BE FULLY ISOLATED. 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. THE AT-10 ECG 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-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

What´s in this Book THE SERVICE PHILOSOPHY FOR ALL SCHILLER UNITS IS FAULT FINDING TO MODULE LEVEL. 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-10 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-10. 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-10 Operating Manual.

Chapter 2 - Functional Overview This chapter provides a functional overview of the AT-10 The functional 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 - Physical Overview & Module Replacement This chapter gives an overview of the physical construction of the AT-10 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 replaceable 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 new module are also provided.

Chapter 5 - Functional Checks & 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.

Chapter 7 - Technical Data The full technical specification of the AT-10 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-10 circuit diagrams. vii

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

What´s in this Book Circuit Diagrams & Board Layouts The circuit diagrams and component layouts are provided for all boards. These details are provided for information only.

viii

Chapter 1 Operating Elements

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

Contents Introduction

1.2

The Keyboard

1.4

Alpha Numeric Keypad General Purpose Keys Control Keys Function Keys Resting ECG Function Keys Exercise Function Keys Connector Panels

1.4 1.4 1.6 1.7 1.7 1.7 1.8 1.9

Side Panel Back Panel Mains Panel Liquid Crystal Display

1.9 1.10 1.11 1.12

Calibration

1.13

Manual Baseline Reset System Setup

1.13 1.14

Defining Macro Functions Save Settings ECG Menu

1.14 1.15 1.16

Filters

1.17

Baseline Filter

1.17

Myogram Filter Mains Filter Number of Printed Copies

1.17 1.17 1.18

Lead Sequence

1.19

User-programmable Lead Group

1.20

Programmable channels for Printout

1.21 Page 1.1

Chapter 1 Operating Elements

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Introduction

The Schiller Cardiovit AT-10

The CARDIOVIT AT-10 is a sophisticated compact work-station for cardiological diagnosis. It has the facility to carry out both resting and exercise ECGs with the test results displayed on the integral LCD and recorded on the built-in thermal printer. Three RS-232 interfaces and one RS-422 interface are provided for the connection of digitally controlled exercise test equipment, blood pressure equipment, and for data transmission/reception. The unit also has facilities for connection of an external video monitor, experimental DC inputs, and analog controlled exercise equipment. With ECG program options, the AT-10 can be upgraded to provide ECG interpretation, exercise test evaluation, pacemaker measurement and Frank vector loops. A Spirometry option enables Spirometry tests to be performed and pulmonary function diagnosis to be carried out. The AT-10 can also be connected to the Schiller PC-based data management program (designated SEMA-200), for the validation and archiving of recorded data.

Page 1.2

Chapter 1 Operating Elements

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Introduction (cont.) The main operating and connection modules of the Cardiovit AT-10 are as follows: z

Keyboard

The keyboard is divided into three functional areas. The top area comprises the unit ON/OFF keys, the paper tray key and other general function keys. The central area contains dedicated control and function keys, and the bottom area contains the alpha-numeric keys and other general function keys.

z

LCD Screen

The LCD screen displays the real-time ECG traces and certain operating and status information. Under operator control the display also gives menu options and displays operator entered data. The display is folded down when not in use.

z

Thermal Printer

The printer provides hard copy of test results.

z

Right-hand Side Panel

The side panel contains dc input connectors, the ECG patient connector, the Spirometry connector and RS serial connectors. When the floppy disk storage option is installed, the disk drive is installed on this side panel.

z

Left-hand Side Panel

This panel contains the paper tray and (below the paper tray) the program pack.

z

Rear Panel

The rear panel contains the data input/output connector, the external video monitor and the ERGO connector. The rear panel also contains the mains connector with on/off switch, voltage selector and mains fuse. When the LAN option is installed the LAN connector is mounted on the back panel

Page 1.3

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

The Keyboard Alpha Numeric Keypad The functions of the dual purpose keys on the alphanumeric keyboard are as follows:

DUAL PURPOSE KEYS KEY

FUNCTION

'1' to '7'

Printout Speed Selection 2.5, 5, 10, 12.5, 25, 50, or 100 mm/s

'8' to `_

Printout Sensitivity Selection 2.5, 5, 10, or 20 mm/mV

General Purpose Keys The general purpose keys to the right of the alpha-numeric keypad, are as follows:

The direction keys are used to move the cursor in order to make menu selections

Page 1.4

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

The Keyboard (cont.)

The top line of the keyboard is dual purpose and when the unit is in the ECG mode, these keys double as control for the direct setting of speed and sensitivity for manual printout. Otherwise, the alphanumeric keyboard serves as a normal keyboard for data input.

Page 1.5

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

The Keyboard (cont.) Control Keys The Control keys are situated at the top of the keyboard and contain the function keys which are common to all function modules. The control keys are as follows:

Note:

Page 1.6

Slight functional differences may exist in different modes

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

The Keyboard (cont.) Function Keys The function keys are arranged in a group in the middle of the keyboard. The left part of the group comprises keys for the resting ECG recording functions. The middle part comprises keys for the Exercise ECG functions. On the right hand side is the SPIRO key for the optional pulmonary function testing program. The following is a summary of the keys and their functions:

Resting ECG Function Keys

Page 1.7

Chapter 1 Operating Elements

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

The Keyboard (cont.) Exercise Function Keys

* The grade increases when pressed in conjunction with the YES (+) key and decreases when pressed in conjunction with the NO (-) key. The Speed/Load increases when pressed in conjunction with the YES (+) key and decreases when pressed in conjunction with the NO (-) key.

Page 1.8

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

Connector Panels Side Panel

The following are located on the side panel: 1. 1 X RS-232C interface for connection of a bicycle with blood pressure measuring device (Port 1) 2. 1 X RS-232C interface for connection of an ergometer (bicycle or treadmill) (Port 2) 3. 1 X RS-232C interface for data transfer (Port 3) 4. 1 X RS-422 interface for data transfer 5. LCD contrast control 6. DC inputs: DC2

0.5V/cm

7. DC inputs: DC1

0.5V/cm

8. Connection for SP-20, SP-150, SP-110 or SP-110/R flow sensor for lung function measurements (Option) 9. Test socket for electrode leads with control light 10. EKG / ECG Socket for patient cable Note:

The socket is CF rated ie fully floating and isolated, defibrillation protected, suitable for intra-cardiac application.

Page 1.9

Chapter 1 Operating Elements

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Connector Panels (cont.) Back Panel

The following connectors are located on the back panel: 1. Identification Plate 2. Mains Module 3. Connector for external video 4. Exercise (stress) test connection for analogue ergometers (bicycle or treadmill) 5. Data I/O socket for connection of foot-switch, QRS trigger, treadmill elevation control 6. Potential equalisation (ground) connection 7. Local area network Connector (Option)

Page 1.10

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

Connector Panels (cont.) Mains Panel

The following are located on the mains panel: 1. Mains fuse (200 mA slow) and voltage selector 2. Mains connection 3. Voltage indicator (mains) 4. Power on / off switch

Page 1.11

SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002

Chapter 1 Operating Elements

Liquid Crystal Display The liquid crystal display (LCD) performs both as a real-time monitor and as an alphanumeric display for menu selection, data input and the provision of important information. The display can be folded down when not in use. The contrast can be adjusted by means of the LCD control located on the side panel of the unit. A typical display of an ECG recording (with patient simulator connected) is as follows:

Depending on the function, the displayed information will vary but the screen is normally divided into three general area as follows:

Page 1.12

z

The top of the screen gives status and operating information. These are permanently displayed.

z

The central part of the screen is taken up with the measured waveform (ie ECG trace, Lung function curve, etc) with the lead identifications or measurement units on the left-hand side.

z

The bottom of the screen displays the time interval of the recording, indicated in seconds. The very bottom line gives, from left to right: •

Selected Baseline and Myogram filter settings

•

Speed, sensitivity and the number of channels (for direct (manual) print-out)

•

The leads that are selected for the printout (for direct (manual) print-out)