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Schiller AT-2plus Service Handbook

Memory 6-channel ecg unit
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SCHILLER AT-2plus 6-Channel ECG Unit
SERVICE HANDBOOK Issue 1 June 1998
Cardio Menu
Operator Manual
AT-2plus
Memory
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: 2.540 014
i

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  • Page 1 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 Cardio Menu Operator Manual AT-2plus Memory 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/...
  • Page 2 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 AT-2plus Memory Service Handbook Article Number 2. 540 014 Associated Documents plus plus...
  • Page 3 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 DECLARATION OF CONFORMITY Diagnostic System: Cardiovit AT-2plus Memory 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.
  • Page 4 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 Where to Obtain Service America WELCH ALLYN SCHILLER Inc. Asia Pacific SCHILLER Asia Pacific Austria SCHILLER Handelsgesellschaft GmbH Medizintechnik France SCHILLER France S.A Germany SCHILLER Medizintechnik GmbH (EU-Bevollmächtiger) Hotline: India Schiller Healthcare India Pvt.
  • Page 5 AT-2plus Memory 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.
  • Page 6 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 Safety Notices WARNINGS & CAUTIONS...
  • Page 7 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 Safety Notices WARNINGS & CAUTIONS...
  • Page 8 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 What's in this book AT-2plus Memory AT-2plus Memory Chapter 1 - Operating Elements AT-2plus Memory AT-2plus Chapter 2 - Functional Overview AT-2plus Memory Chapter 3 - Fault Diagnosis Chapter 4 - Module Removal and Replacement...
  • Page 9 SCHILLER AT-2plus 6-Channel ECG Unit SERVICE HANDBOOK Issue 1 June 1998 What's in this book Chapter 7 - Technical Data AT-2plus Memory Chapter 8 - Glossary AT-2plus Memory Index Circuit Diagrams & Board layouts We need your help...

  • Page 10: Table Of Contents

    Chapter 1 Operating Elements Contents Introduction Location & Power The Keyboard LCD Screen AT-2plus Short Form Operating Instructions Modes of Operation Automatic Mode Manual Mode 1.10 Settings 1.12 Automatic Mode (ECG) Settings 1.20 Memory and Data Transmission Option 1.24 Software Updating via RS-232 1.28...

  • Page 11: Introduction

    Introduction List of Symbols...

  • Page 12: Location & Power

    Location & Power Location Power Supply Q‚r…ÃDqvph‡v‚ GUT" 1E7)& !(*" *"! B<63!3" 8B*'&]Y^ 3#3$3%3& When mains is connected a mains symbol is displayed (as shown above). When the unit is running on battery power a battery symbol is displayed: When battery capacity is limited, the battery symbol flashes on and off. Switching On and Off Potential Equalisation...

  • Page 13: The Keyboard

    The Keyboard...
  • Page 14 The Keyboard (cont.) Key combination: SHIFT + Character & "...

  • Page 15: Lcd Screen

    LCD Screen...

  • Page 16: At-2Plus Short Form Operating Instructions

    AT-2plus Short Form Operating Instructions Automatic ECG Recording • • • • • • Manual ECG Recording (Rhythm Strip) • • • " • Electrode hook-up check 1ED? 1ED? 1<D Filter On/Off • System Configuration • 1<D...

  • Page 17: Modes Of Operation

    Modes of Operation Automatic Mode Manual Mode...

  • Page 18: Automatic Mode

    Automatic Mode automatic mode 1ED? To start the automatic ECG recording in Format 1, press the AUTO key: To start the automatic recording in the second format, press the ALT key followed by the AUTO key: 1<D COPY ALT - COPY...

  • Page 19: Manual Mode

    Manual Mode Manual mode To start the manual recording of a real-time ECG, press the MANUAL Printout key To stop the manual recording (printout) press the STOP key Lead Group "...
  • Page 20 Manual Mode (cont.) Chart Speed "% Sensitivity " & Myogram Filter Recentering WARNING...

  • Page 21: Settings

    Settings STOP STOP Example...
  • Page 22 Settings (cont.) ALT - 0 - 1 - 1 Unit designation Serial number Leads ECG Format MECG Measurements Marks nterpretation Selected Rhythm leads Automatic Centering Printout of signals Baseline Filter Mains Filter Myogram Filter...
  • Page 23 Settings (cont.) Interpretation settings: For AT-2plus Memory only: Automatic Save Automatic Erase Baud Com-Type Default Settings ALT - 0 - 6 - 6...
  • Page 24 Settings (cont.) Language STOP User Identification ALT - 9 - 3 - 3...
  • Page 25 Settings (cont.) Filters Baseline Filter Baseline filter STOP Mains Filter Mains filter...
  • Page 26 Settings (cont.) Myogram Filter Myogram filter FILTER STOP STOP FILTER KEY FILTER...
  • Page 27 Settings (cont.) Defining Lead Sequence & Printout STOP Simultaneous Sequential Auto-Centering ON Auto-Centering OFF...
  • Page 28 Settings (cont.) Acoustic QRS Indication Time / Date...

  • Page 29: Automatic Mode (Ecg) Settings

    Automatic Mode (ECG) Settings...
  • Page 30 Automatic Mode (ECG) Settings (cont.) Average Cycles Measurements and Markings (C version only)
  • Page 31 Automatic Mode (ECG) Settings (cont.) Interpretation (C version only) STOP Interpretation Settings (C version only)
  • Page 32 Automatic Mode (ECG) Settings (cont.) Selecting Rhythm Leads STOP...

  • Page 33: Memory And Data Transmission Option

    Memory and Data Transmission Option WARNINGS & CAUTIONS Auto Storage and Auto Erase Manual Storage ENTER ALT - S Displaying Memory Files ALT - M...
  • Page 34 Memory and Data Transmission Option (cont.) Erasing Memory Files ALT + E Transmitting Stored Files Transmission Settings...
  • Page 35 Memory and Data Transmission Option (cont.) Modem Transmission (RS-232 with external modem / or / future Modem option) ALT - 0 - 9 - 2 - 2 ALT - 0 - 9 - 3 - 2 ALT - M ALT + T ALT + Q...
  • Page 36 Memory and Data Transmission Option (cont.) Line Transmission ALT - 0 - 9 - 2 - 1 ALT - M ALT + T ALT + Q...

  • Page 37: Software Updating Via

    Software Updating via RS-232 Prerequisites Procedure...

  • Page 38: Care & Maintenance

    Care & Maintenance Self-test 12 Monthly Check Cleaning the Casing CAUTION...
  • Page 39 Care & Maintenance (cont.) Cleaning the Patient Cable Cleaning the Thermal Print Head...

  • Page 40: Replacing The Recording Paper

    Replacing the Recording Paper @Q`UbdbQi @Q`UbdbQiS_fUb @Q`Ubb_\\Ub bU\UQcURQb @Q`Ub WbYTcYTUe`...

  • Page 41: Thermal Paper Handling

    Thermal Paper Handling...
  • Page 42 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 2 SERVICE HANDBOOK Issue 1 June 1998 Functional Overview Chapter 2 Functional Overview Contents Introduction MK 14 - 10 Main Board Power Supply Program and ECG Memory Serial EEPROM Thermal Print Head Controller Printer Timing...

  • Page 43: Introduction

    SERVICE HANDBOOK Issue 1 June 1998 Introduction This chapter provides a functional overview of the AT-2plus electronics. The aim of this overview is to enable the service engineer to identify processing paths in order to help identify possible faulty modules. A functional block diagram supports the text.
  • Page 44 12 V Mains Battery P4 (part) MAIN BOARD MK 14 - 10 LCD power Voltage sense supply TOP ASSEMBLY +Batt ON / OFF control Voltage +5V ref Mains Battery charger & regulator LCD controller Rectification con- voltage regulator LCD screen nector Voltage +5.2V...

  • Page 45: Mk 14 - 10 Main Board

    Chapter 2 SCHILLER AT-2plus 6-Channel ECG Unit Functional Overview SERVICE HANDBOOK Issue 1 June 1998 MK 14 - 10 Main Board Power Supply The mains supply is full wave rectified to produce an unregulated dc supply of approximately 30 V (+U). This voltage is used by a switched voltage generator to produce +UD (13.5V). +UD charges the battery when mains is connected.

  • Page 46: Power On Reset

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 2 SERVICE HANDBOOK Issue 1 June 1998 Functional Overview MK 14-10 Main Board (cont.) Power On Reset The Power on reset circuit controls the master reset of the CPU. This circuit has two functions as follows: •...

  • Page 47: Mk 14-11 Rs-232 Interface Board

    / serial and serial / parallell conversion for the transmission and reception of data and provide signal level compatibility with RS-232 standard. External Modem An external modem can be connected to the RS-232 output from the AT-2plus and be used for transmitting memory contents over a telephone line. Page 2.6...

  • Page 48: Mk 14-12 Modem Interface Board

    Functional Overview MK 14-12 Modem Interface Board Future versions of the AT-2plus Memory will include a modem interface board in place of the RS-232 board. The outgoing data are converted from parallell to serial form and then modulated for transmission over a telephone line. The incoming data are first demodulated and then converted from serial to parallell form.

  • Page 49: Top Assembly

    Chapter 2 SCHILLER AT-2plus 6-Channel ECG Unit Functional Overview SERVICE HANDBOOK Issue 1 June 1998 Top Assembly LCD Screen The LCD power supply produces the high voltage for the LCD backlight and the contrast voltage. The ECG signals are stored in a video RAM and the LCD controller converts the data to the proper form for the LCD screen.
  • Page 50 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 3 SERVICE HANDBOOK Issue 1 June 1998 Fault Diagnosis Chapter 3 Fault Diagnosis Contents Introduction General Check Procedures Printer Check Print Head Alignment and Print Head Tension RS-232 Test with Test Plug Memory and Data Transmission Check...
  • Page 51 SERVICE HANDBOOK Issue 1 June 1998 Introduction The AT-2plus is designed to be simple to use and simple to service: the service philosophy of the AT-2plus is module replacement and not board repair. The purpose of this chapter is to provide fault-finding procedures that will quickly and efficiently identify a fault to a specific module.
  • Page 52 AT-2plus functional areas. The instructions given here are guides to the basic functions. If more operating information is required (general settings, comprehensive menu guides etc.) please refer to Chapter 1 in this publication or the relevant User Manual for the software version applicable.
  • Page 53 Chapter 3 SCHILLER AT-2plus 6-Channel ECG Unit Fault Diagnosis SERVICE HANDBOOK Issue 1 June 1998 Printer Check To check the printer and to ensure that every pixel is operational, a built-in printer test is provided. To carry out the printer check press: ALT - MAN START A test printout is given.
  • Page 54 To carry out this test proceed as follows: Note: If the SCHILLER test plug is not available a test plug can easily be fabricated from a standard 9-pin D-type connector (female). Shortcircuit the following pins: •...
  • Page 55 A personal computer (PC) with the SEMA communication program (SEMACOMM) installed. • An RS-232 cable assembly, Art.No. 2.310 159 for connecting the RS-232 interface on the AT-2plus with the COM port of the PC. • A patient simulator attached to the patient connector on the AT-2plus. Page 3.6...
  • Page 56 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Chapter 4 Module Removal and Replacement Contents Introduction Safety Notices Physical Overview Exploded View Base Assembly and Printer Exploded View Paper Feed Opening and Closing the Case Printer Tray Assembly and Thermal printer 4.10...
  • Page 57 Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 Remove top assembly In Base assembly access to : Mains trans- Paper tray Board Battery former and assembly MK 14-10 pack connector and motor...

  • Page 58: Introduction

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Introduction This Chapter provides an overview of the procedures to remove and replace the modules that are spared at service level. The instructions given in this chapter are autonomous, with each module containing the following: •...

  • Page 59: Safety Notices

    TOP ASSEMBLY REMOVED AND WITH MAINS CONNECTED. WHEN CARRYING OUT THESE PROCEDURES BEWARE THAT POTENTIALLY LETHAL VOLTAGES ARE PRESENT. CAUTIONS THE AT-2PLUS CONTAINS STATIC SENSITIVE CMOS COMPONENTS; OBSERVE ANTISTATIC PRECAUTIONS: WHEN CARRYING OUT ANY MAINTENANCE PROCEDURES ALWAYS PLACE THE UNIT ON AN EARTHED ANTISTATIC MAT.

  • Page 60: Physical Overview

    Module Removal and Replacement Physical Overview The AT-2plus unit is enclosed in a two part, medical standard, moulded plastic case. The top part contains the keyboard and the LCD screen with the base section containing all the electronics of the unit, the RS-232 interface, the thermal printer, the paper tray, the battery and mains transformer.

  • Page 61: Exploded View Base Assembly And Printer

    Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 Exploded View Base Assembly and Printer Page 4.6...

  • Page 62: Exploded View Paper Feed

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Exploded View Paper Feed Page 4.7...

  • Page 63: Opening And Closing The Case

    Prerequisites • The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance is carried out on the AT-2plus. The room temperature should be between 18 and 28 degrees. • THE WARNINGS AND CAUTIONS AT THE BEGINNING OF THE CHAPTER MUST BE OBSERVED.
  • Page 64 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Opening and Closing the Case Top Assembly Replacement To replace the Top Assembly proceed as follows: 1. Check that all boards and components are firmly secured. Check for loose screws. Ensure that no screws or foreign bodies are loose in the bottom of the case.

  • Page 65: Printer Tray Assembly And Thermal Printer

    Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 Printer Tray Assembly and Thermal printer Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed previously. All external cable assemblies must be disconnected.

  • Page 66: Thermal Printer Replacement

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Printer Tray Assembly and Thermal printer Thermal Printer Replacement. To replace the Thermal Printer proceed as follows: 1. Position the Printer in the paper tray/print assembly so that the printer mounting plate lips slot into the dedicated cutouts in the assembly;...

  • Page 67: Main Board Mk

    Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 Main Board MK 14 - 10 Prerequisite • The Warnings and Cautions at the beginning of the chapter must be observed. • The top assembly must be removed and all external cable assemblies disconnected.

  • Page 68: Battery Pack

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Battery Pack Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed and all external cable assemblies disconnected.

  • Page 69: Keyboard

    Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 Keyboard The keyboard comes as a complete assembly with the top casing. The part number of the keyboard is given in Chapter 6.

  • Page 70: Lcd Screen Board

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement LCD screen board Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed previously. All external cable assemblies must be disconnected.

  • Page 71: Serial Interface Board Mk

    Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 RS-232 Serial Interface Board MK 14 - 11 Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed.

  • Page 72: Modem Interface Board Mk

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 1 June 1998 Module Removal and Replacement Modem Interface Board MK 14 - 12 Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed. •...
  • Page 73 Chapter 4 SCHILLER AT-2plus 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 1 June 1998 Page 4.18...
  • Page 74 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 1 June 1998 Adjustments Chapter 5 Adjustments Contents Introduction Safety Notices and Conditions Conditions Test Equipment Proprietary Test Equipment/Tools Main Board MK 14-10 Adjustment locations Battery Charge Voltage Precautions and Requirements...

  • Page 75: Introduction

    Specific warnings and cautions are given in the text where applicable. The part numbers for all replaceable modules are given in Chapter 6. The AT-2plus has the following adjustments: • Battery Charge Voltage (VR1 on the main board MK 14-10) •...

  • Page 76: Safety Notices And Conditions

    USE FORCE. NEVER STRAIN THE CABLE ASSEMBLIES. THE PROCEDURAL STEPS GIVEN FOR EACH MODULE MUST BE FOLLOWED IN THE ORDER GIVEN. THE OUTER SURFACES OF THE AT-2PLUS ARE SUSCEPTIBLE TO ABRASION DAMAGE. TO PREVENT SCRATCHING, ALWAYS PLACE ON A SOFT, NON-ABRASIVE CLOTH.

  • Page 77: Test Equipment

    ECG Simulator, e.g. Phantom 320 • Oscilloscope • Digital Multimeter • Standard tool kit with a selection of cross-bladed, flat-bladed and posi-drive screwdrivers, pliers and general tools • SCHILLER 10 lead patient cable Number 2.400070 (2. 400071 for USA) Page 5.4...
  • Page 78 Printer data Paper mark connector connector Ground connector MK 14-10 Main board Battery Power supply Microprocessor assembly LCD backlight HV Batt. connectors LCD signals and power MK 14-11 assembly (isolated) Patient connector RS-232 RS-232 Serial connector Interface Keyboard Printer (Not used) connector motor connector...

  • Page 79: Battery Charge Voltage

    Battery Charge Voltage Precautions and Requirements The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance is carried out on the AT-2plus. The room temperature should be between 18 and 28 degrees. Tools and Equipment •...

  • Page 80: Paper Mark Detector Check

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 1 June 1998 Adjustments Paper mark Detector Check Tools, Equipment and Material • Digital voltmeter • Small flat bladed screwdriver • 70% alcohol solution and clean lint free cloth Procedure To adjust the paper-mark Schmitt trigger sensitivity proceed as follows: •...

  • Page 81: Ecg Amplifier +2V, -2V And Pwm Ramp Time Adjustment

    • DISCONNECT THE MAINS SUPPLY CAUTIONS THE AT-2PLUS CONTAINS STATIC SENSITIVE CMOS COMPONENTS; OBSERVE ANTISTATIC PRECAUTIONS . PLACE THE UNIT ON AN EARTHED ANTISTATIC MAT. PERSONNEL MUST BE EARTHED WHEN HANDLING THE UNIT. EXERCISE CARE WHEN REMOVING AND REPLACING CONNECTORS. NEVER USE FORCE.

  • Page 82: Ecg Amplifier Reference Voltage

    SCHILLER AT-2plus 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 1 June 1998 Adjustments ECG Amplifier reference voltage • Switch the unit on and measure the voltage difference between the +2V reference and the - 2V reference on pins 1 and 7 of operational amplifier U5. Adjust trimmer VR2 to achieve a voltage difference of 4000 mV ±2mV.

  • Page 83: Service Screen

    Chapter 5 SCHILLER AT-2plus 6-Channel ECG Unit Adjustments SERVICE HANDBOOK Issue 1 June 1998 Service Screen The service screen provides information of the patient cable and electrodes and gives the value of certain reference voltages and important internal offset values. These values are for information only.
  • Page 84 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 1 June 1998 Adjustments Service Screen (cont.) Electrode dc offset This gives the voltage drop in the patient cable and can indicate any faults in the patient cable or patient electrode.

  • Page 85: Software Options / Updates

    Acceptance of the code is indicated by a series of beeps. CAUTION MORE THAN 10 ATTEMPTS TO ENTER THE INCORRECT CODE BLOCKS THE UNIT Installing Software Updates To update the operating software in the AT-2plus see instructions in Chapter 1 of this book. Page 5.12...
  • Page 86 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 6 SERVICE HANDBOOK Issue 1 June 1998 Spare Parts Chapter 6 Spare Parts Contents Ordering Information Service Department Spare Parts Page 6.1...
  • Page 87 Your local representative stocks all the disposables and accessories available for the AT-2plus. In case of difficulty or to obtain the address of your local dealer, please contact the head office. Our staff will be pleased to help process your order or to provide any details for all SCHILLER products.
  • Page 88 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 6 SERVICE HANDBOOK Issue 1 June 1998 Spare Parts Spare Parts Page 6.3...
  • Page 89 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 7 SERVICE HANDBOOK Issue 1 June 1998 Technical Data Chapter 7 Technical Data Contents Technical Data Available Configurations Page 7.1...
  • Page 90 Chapter 7 SCHILLER AT-2plus 6-Channel ECG Unit Technical Data SERVICE HANDBOOK Issue 1 June 1998 Technical Data Dimensions: Weight: Mains Supply: Battery: Battery Capacity: Power Consumption: Leads: Paper Speed: Sensitivity: Chart Paper: Printing Process: Recording Tracks: Automatic Lead Programs: Data Record:...
  • Page 91 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 7 SERVICE HANDBOOK Issue 1 June 1998 Technical Data Technical Data Myogram Filter (muscle tremor filter) Line Frequency Filter: Patient Input: Safety Standard: EMC: Safety Class: Environmental Conditions: Control Panel: Available Configurations plus Standard Version:...
  • Page 92 Chapter 7 SCHILLER AT-2plus 6-Channel ECG Unit Technical Data SERVICE HANDBOOK Issue 1 June 1998 Page 7.4...
  • Page 93 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 1 June 1998 Glossary Chapter 8 Glossary Contents Introduction Acronyms Page 8.1...
  • Page 94 Chapter 8 SCHILLER AT-2plus 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 1 June 1998 Introduction plus Memory. Page 8.2...
  • Page 95 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 1 June 1998 Glossary Acronyms Page 8.3...
  • Page 96 Chapter 8 SCHILLER AT-2plus 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 1 June 1998 Acronyms Page 8.4...
  • Page 97 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 1 June 1998 Glossary Acronyms Page 8.5...
  • Page 98 Chapter 8 SCHILLER AT-2plus 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 1 June 1998 Acronyms Page 8.6...
  • Page 99 SCHILLER AT-2plus 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 1 June 1998 Glossary Acronyms Page 8.7...
  • Page 100 Chapter 8 SCHILLER AT-2plus 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 1 June 1998 Page 8.8...
  • Page 101 SCHILLER AT-2plus 6-Channel ECG Unit Index SERVICE HANDBOOK Issue 1 June 1998 Index Page 1...
  • Page 102 SCHILLER AT-2plus 6-Channel ECG Unit Index SERVICE HANDBOOK Issue 1 June 1998 Index Symbols +2V, -2V and PWM Ramp Time Adjustment 5.8 Acronyms used in the AT-2 8.3 Automatic Mode 1.5 Battery Charge Voltage 5.6 Battery Pack 4.12 Board Removal 4.11 Board Replacement 4.11...
  • Page 103 SCHILLER AT-2plus 6-Channel ECG Unit Index SERVICE HANDBOOK Issue 1 June 1998 Index Manual Mode 1.6 Memory and Data Transmission 1.24 MK 14-10 Adjustment Locations 5.5 Modem Interface 2.5 Modem Removal 4.15 Modem Replacement 4.15 Modem Transmission 1.26 Motor Speed 2.5 Noise Damping 2.5...
  • Page 104 SCHILLER AT-2plus 6-Channel ECG Unit Index SERVICE HANDBOOK Issue 1 June 1998 Index Technical Data 7.2 Test Equipment 5.4 Thermal Print Head Controller 2.4 Tools 4.5 Top Assembly Removal 4.8 Top Assembly Replacement 4.8 Transmitting Stored Files 1.25 Udif 5.10 Uoff 5.10...
  • Page 105 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 CAVEH091 GNDLEDMAINS Schiller AG KEYBOARD MK14-3 AT-2 plus 2482CA Altgasse 68 CH-6340 Baar Size: Entw: AS Date: 26.01.99 Sheet Drawn by: Gau...
  • Page 106 200mAT/230V SHEET 17 315mAT/115V Akku AMP-2.8/1.3 C269 C270 Cave 150N/1206 150N/1206 PACEMAKER DETECTION CAVE CAVE Schiller AG MICROPROCESSOR MK14-10 (AT-2plus) 2483CA PMPON EBI12 PMPON ISOLATED Altgasse 68 CH-6340 Baar SHEET 18 Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 107 BEI U-BATT = 10,3V (DRUCKER AKTIV) C163 = 11.3V (STANDBY) R223 R229 100K TP61 R227 R230 MON/ BC847 R228 Schiller AG ON/OFF & BACKUP MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 108 74HC14 74HC14 C140 TSC426 +5VREF U32B +Us=10V, U28A U28B U28F TSC426 +5,2V: 1A Last f = 90kHz Schiller AG 74HC14 74HC14 74HC14 +5.2V/+24V SWITCHER MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 109 +U10 74HC14 100N 330K BC847 100K 74HC14 VR200K TSC426 LM358 +U = 25VDC, +UD: 0,6A Last 74HC14 f = 100kHz Schiller AG MAINS INPUT/BATT.CHARG. MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 110 A/ D 74HC04 74HC04 74HC04 74HC04 R317 RTCC/ C228 C222 R/W/ 7705B 390P Schiller AG U73F U73E MICROPROCESSOR/CPU MK14-10 (AT-2plus) 2483CA C221 RES/ RESLCD/ Altgasse 68 1U/16V CH-6340 Baar 74HC04 74HC04 Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 111 220P TP80 +24VPR AMP-2.8/1.3 CAVE CAVE R252 R253 TP69 STRB2 100R 100R R269 WANNE-30 Messpunkt TP84 Schiller AG C197 TP81 TP/KEYBOARD CONTR. MK14-10 (AT-2plus) 2483CA 220P Altgasse 68 CH-6340 Baar CAVE Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 112 < T R472 470R U74C 74VHC393 24MHZ 74HC14 74VHC574 C286 C287 U74F U63A 74HC14 CTRDI V16 OVERFL CT= 0 < 74VHC393 Schiller AG 12-BIT-ZAEHLER MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 113 DQ12 DQ13 DQ14 DQ15 USRAM/ USRAM/ CE1/ FOE/ R/W/ TP106 BYTE/ BS62LV2000STC R404 RY/BY/ PROM/ FWE/ PROM/ RESLCD/ RESLCD/ RESET/ 29F800 Schiller AG RAM/FLASH MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 114 NB/74HC14 SOCP WRFIFO/ WRFIFO/ U15D FRES/ FRES/ R335 NB/74HC14 NB/R0805 U15E NB/74HC14 R334 NB/R0805 U41C U15F FIFOTPD & NB/74HC02 NB/74HC14 Schiller AG TPH DRIVER MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 115 CAVE CAVE CAVE RDLCD/ C312 WRLCD/ WRLCD/ CAVE RESLCD/ R480 R486 RESLCD/ YDIS/ YDIS-F/ YDIS/ R385 Schiller AG C250 LCD CONTROLLER MK14-10 (AT-2plus) 2483CA 100K 220P Altgasse 68 CAVE CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 116 CAVE R267 CFL-ROEHRE C256 27P/3kV C257 FMMT491 150N/1206 ILG-4 TP88 TP89 FMMT491 ACHTUNG: > 1000V mind. 4mm Abstand CAVE Schiller AG LCD POWER SUPPLY MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 117 C3OS 680P EBI10 C5OS EBI9 C4OS BC857 CAVEi CAVE ISOLATION EBI8 C6OS TP21 14551 +2Vi DGNDi -10Vi -5VDi -2Vi Schiller AG ECG Part B MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 118 VR5K 1U/X7R TP76 TL062 RL(N) R283 220K LPC662 100N 1U/16V RV12 680P CAVEi CAVEi AGNDi AGNDi DGNDi DGNDi DGNDi Schiller AG EKG Part C MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 119 R133 SST204 150N/1206 160R 150N/1206 CAVEi CAVEi AGNDi R139 AGNDi AGNDi AGNDi AGNDi AGNDi R145 R147 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL C1+ C2 MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 120 SST204 160R 150N/1206 C110 CAVEi CAVEi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi R168 R175 R177 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL C3 + C4 MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 121 150N/1206 160R 150N/1206 C120 CAVEi CAVEi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi R299 R311 R318 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL C5 + C6 MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 122 150N/1206 160R 150N/1206 C135 CAVEi CAVEi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi R369 R371 R363 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL LA + RA MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 123 TL084 TL084 TL084 680P C247 220K 100K 100N 100N AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi -5VAi AGNDi AGNDi Schiller AG ECG PACEMAKER TRIGGER MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 124 DGNDi AGNDi DGNDi 10U/16V 33U/20V 10U/16V SGL41 TP31 -5VDi SGL41 TP30 1U/16V -5VAi 47R/1206 100N BAV99 TP29 -10V -10Vi Schiller AG DC-DC CONVERTER (EKG) MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 07.02.00 Sheet Drawn by: Gau...
  • Page 125 R237 R238 R275 NB/R0805 100R C232 C191 R338 120P TP86 TP66 TP85 PAPERMARK DETECTOR NB/DUBOX-2 C189 C190 390P 390P CAVE CAVE Schiller AG PAPERMARKER MK14-10 (AT-2plus) 2483CA Altgasse 68 CH-6340 Baar Size: Drawn by: Gau Entw: TM Date: 07.02.00 Sheet...
  • Page 126 CAVE CAVE GNDRS 470P CAVE CAVE 68U/6.3V BZX84C5V6 1N5339B/NB GNDRS CAVE CAVE 100R 100R 470P DSUB-9M-90/CAVE CAVE CAVE CAVE CAVE Schiller AG Interfaceboard RS-232 MK14-11 (AT-2Plus) 2485BA Altgasse 68 CH-6340 Baar Size: Drawn by: STR Entw: Ben Date: 14.01.1997 Sheet...

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