Schiller Cardiovit AT-10 How to use

i
SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Cardiovit
AT-10
ECG and
Spirometry Unit
Service Handbook
SCHILLER AG
Altgasse 68
CH-6341 Baar, Switzerland
Phone: + 41 41 766 42 42
Fax: + 41 41 761 08 80
Home page: http://www.schiller.ch
April 2002 Article Number: 2. 540 005

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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

iii
SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Where to Obtain Service
USA / Canada
WELCH ALLYN SCHILLER Inc., 7420 Carroll Road, San Diego, CA , US-92121-2334
USA
Tel.: [phone] Fax : [phone]
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
Austria SCHILLER HmbH, Kampmüllerweg 24, A-4044 Linz, Austria
Tel.: + 43 732 709 90 Fax : + 43 732 757 000
France
SCHILLER Medical S.A, BP 50, 19, Avenue de la Gare, F-67162 Wissembourg / Cedex,
France
Tel.: [phone] Fax : [phone]
Germany (EU
authorized
representative)
SCHILLER Medizintechnik GmbH, Rudolf-Diesel Strasse 14, D-85521 Ottobrunn, Germany
Tel.: + 4989 629 981 0Fax : + 4989 609 509 0
India
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
Italy ESAOTE Spa (SCHILLER), Via di Caciolle 15, I-50127 Firenze, Italy
Tel.: + 39055 4229 201 Fax : + 39055 4229 208
Switzerland SCHILLER Reomed AG, Riedstrasse 14, CH-8953 Dietikon, Switzerland
Tel.: [phone] Fax : + 411 740 3710
All other
countries
SCHILLER AG, Altgasse 68, CH-6341 Baar, Switzerland
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
changesinthespecificationoftheproductdescribedwithinatanytimewithoutobligationtonotify
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 ina retrievalsystem ortranslate intoany language,in anyform orby anymeans,
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
accidentorasaresultofimproperhandling.Thewarrantyentitlesfreereplacementofthedefective
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
TOPREVENTELECTRICSHOCKDONOTDISASSEMBLETHE UNIT.NOSERVICEABLE
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.
DONOT,UNDERANYCIRCUMSTANCES,IMMERSETHEUNITORCABLEASSEMBLIES
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).
THEREISNODANGERWHENUSINGTHEECGUNITFORAPACEMAKERPATIENTOR
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.
WHENNON-MEDICALDEVICESARECONNECTEDTOTHERS-232INTERFACEENSURE
THAT BOTH UNITS ARE SECURELY CONNECTED TO THE SAME EARTH POTENTIAL.
WHEN OPERATING THE UNIT ON BATTERY AND SIMULTANEOUSLY USING NON-
MEDICAL 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
PHYSICIANSORPERSONNELUNDERTHEIRDIRECTSUPERVISION.THENUMERICAL
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.

vii
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 INFORMA-
TION NECESSARY TO ENABLE THE SERVICE ENGINEER TO EFFICIENTLY LOCATE
AND REPLACE A FAULTY MODULE. THIS BOOK ASSUMES NO DETAILED KNOWL-
EDGE OF THE AT-10 BUT DOES REQUIRE THAT THE SERVICE ENGINEER IS FAMIL-
IAR 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
oftools, jumper settings, adjustments, and settings or special requirements that are required before
andafter replacement. Functional checks that must becarried out after replacing a new moduleare
also provided.
Chapter 5 - Functional Checks & Adjustments
Thischapterprovidesalladjustmentsandsettings.Alsodetailedinthischapterarebasicfunctional
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.

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SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
What´s in this Book
Circuit Diagrams & Board Layouts
Thecircuitdiagramsandcomponentlayoutsare provided for all boards.Thesedetailsareprovided
for information only.

Page 1.1
SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002 Chapter 1
Operating Elements
Chapter 1
Operating Elements
Contents
Introduction 1.2
The Keyboard 1.4
Alpha Numeric Keypad 1.4
General Purpose Keys 1.4
Control Keys 1.6
Function Keys 1.7
Resting ECG Function Keys 1.7
1.7
Exercise Function Keys 1.8
Connector Panels 1.9
Side Panel 1.9
Back Panel 1.10
Mains Panel 1.11
Liquid Crystal Display 1.12
Calibration 1.13
Manual Baseline Reset 1.13
System Setup 1.14
Defining Macro Functions 1.14
Save Settings 1.15
ECG Menu 1.16
Filters 1.17
Baseline Filter 1.17
Myogram Filter 1.17
Mains Filter 1.17
Number of Printed Copies 1.18
Lead Sequence 1.19
User-programmable Lead Group 1.20
Programmable channels for Printout 1.21

SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Chapter 1
Operating Elements
Page 1.2
Introduction
The Schiller Cardiovit AT-10
TheCARDIOVITAT-10isasophisticatedcompactwork-stationforcardiologicaldiagnosis.Ithas
thefacilitytocarryoutbothrestingandexerciseECGswiththetestresultsdisplayedontheintegral
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
controlledexercise testequipment,bloodpressureequipment,andfordatatransmission/reception.
Theunitalsohasfacilitiesforconnectionofanexternalvideomonitor,experimentalDCinputs,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 1.3
SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002 Chapter 1
Operating Elements
Introduction (cont.)
The main operating and connection modules of the Cardiovit AT-10 are as follows:
lKeyboard 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.
lLCD 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
operatorentereddata.Thedisplayisfoldeddownwhennot
in use.
lThermal Printer The printer provides hard copy of test results.
lRight-hand Side Panel The side panel contains dc input connectors, the ECG
patient connector, the Spirometry connector and RS serial
connectors.Whenthefloppydiskstorageoptionisinstalled,
the disk drive is installed on this side panel.
lLeft-hand Side Panel This panel contains the paper tray and (below the paper
tray) the program pack.
lRear 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

SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Chapter 1
Operating Elements
Page 1.4
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 1.5
SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002 Chapter 1
Operating Elements
The Keyboard (cont.)
ThetoplineofthekeyboardisdualpurposeandwhentheunitisintheECGmode,thesekeysdouble
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.

SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Chapter 1
Operating Elements
Page 1.6
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: Slight functional differences may exist in different modes

Page 1.7
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

SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Chapter 1
Operating Elements
Page 1.8
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 1.9
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.

SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Chapter 1
Operating Elements
Page 1.10
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 1.11
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

SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Chapter 1
Operating Elements
Page 1.12
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.
Thedisplaycanbe folded down when notinuse.The contrast can beadjustedbymeans 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:
lThe top of the screen gives status and operating information. These are permanently
displayed.
lThe 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.
lThe 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)