WelcAllyn Schiller AT2 Users Guide Edition b Aug 2001

Terms of Warranty WELCH ALLYN SCHILLER warrants the AT-2 Electrocardiograph, when new, to be free of defects in material and workmanship and to perform in accordance with manufacturer`s specifications for the period of three (3) years from the date of purchase from Welch Allyn or it`s authorized distributors or agents. Accessory items such as electrodes, batteries and cables are limited to a warranty of 90 days from the date of purchase from Welch Allyn or its authorized distributors or agents. Welch Allyn will repair or replace any components found to be defective or at variance from manufacturer`s specifications within this time at no cost to the customer. It shall be the purchasers responsibility to return the instrument to Welch Allyn or an authorized distributer, agent or service representative. This warranty does not include breakage or failure due to tampering, misuse, neglect, accidents, modifications or shipping. This warranty is also void if the instrument is not used in accordance with manufacturer`s recommendations or if repaired by other than Welch Allyn or an authorized agent. Purchase date determines warranty requirements. No other express warranty is given.

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Terms of Warranty WELCH ALLYN SCHILLER warrants the AT-2 Electrocardiograph, when new, to be free of defects in material and workmanship and to perform in accordance with manufacturer`s specifications for the period of three (3) years from the date of purchase from Welch Allyn or it`s authorized distributors or agents. Accessory items such as electrodes, batteries and cables are limited to a warranty of 90 days from the date of purchase from Welch Allyn or its authorized distributors or agents. Welch Allyn will repair or replace any components found to be defective or at variance from manufacturer`s specifications within this time at no cost to the customer. It shall be the purchasers responsibility to return the instrument to Welch Allyn or an authorized distributer, agent or service representative. This warranty does not include breakage or failure due to tampering, misuse, neglect, accidents, modifications or shipping. This warranty is also void if the instrument is not used in accordance with manufacturer`s recommendations or if repaired by other than Welch Allyn or an authorized agent. Purchase date determines warranty requirements. No other express warranty is given.

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PHYSICIAN‘S RESPONSIBILITY The AT-2 electrocardiograph is provided for the exclusive use of qualified physicians or personnel under their direct supervision. The numerical and graphical results 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.

Federal law in the USA restricts this device to sale by or on the order of a physician.

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PHYSICIAN‘S RESPONSIBILITY The AT-2 electrocardiograph is provided for the exclusive use of qualified physicians or personnel under their direct supervision. The numerical and graphical results 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.

Federal law in the USA restricts this device to sale by or on the order of a physician.

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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. This product is not designed for outdoor 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. The device must only be operated using battery power if the earth connection is suspect or if the mains lead is damaged or suspected of being damaged. Do not use high temperature sterilization processes (such as autoclaving). Do not use E-beam or gamma radiation sterilization. Do not use solvent clearners. Use only accessories and other parts recommended or supplied by Welch Allyn Schiller. Use of other than recommended or supplied parts may result in injury, inaccurate information and/or damage to the unit.

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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. This product is not designed for outdoor 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. The device must only be operated using battery power if the earth connection is suspect or if the mains lead is damaged or suspected of being damaged. Do not use high temperature sterilization processes (such as autoclaving). Do not use E-beam or gamma radiation sterilization. Do not use solvent clearners. Use only accessories and other parts recommended or supplied by Welch Allyn Schiller. Use of other than recommended or supplied parts may result in injury, inaccurate information and/or damage to the unit.

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The AT-2 complies with EMC regulations for medical products which affords protection against emissions and electrical interference. However special care must be exercised when the 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. This unit is CF classified according to IEC 601-1. This means that the patient connection is fully isolated and defibrillation protected. Welch Allyn Schiller can only guarantee protection against defibrillation voltage however, when the original Welch Allyn Schiller patient cable is used. If several units are coupled there is a danger of summation of leakage current Do not touch the casing during defibrillation If the patient cable should become defective after defibrillation, lead off will be displayed and an acoustic alarm given

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The AT-2 complies with EMC regulations for medical products which affords protection against emissions and electrical interference. However special care must be exercised when the 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. This unit is CF classified according to IEC 601-1. This means that the patient connection is fully isolated and defibrillation protected. Welch Allyn Schiller can only guarantee protection against defibrillation voltage however, when the original Welch Allyn Schiller patient cable is used. If several units are coupled there is a danger of summation of leakage current Do not touch the casing during defibrillation If the patient cable should become defective after defibrillation, lead off will be displayed and an acoustic alarm given

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This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to both Part 15 of the FCC (Federal Communications Commision) Rules and the radio interference regulations of the Canadian Department of Communications. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Disposal Instructions ° and Battery Care

DO NOT DISPOSE OF THE BATTERY BY FIRE OR INCINERATOR DANGER OF EXPLOSION

°

DO NOT ATTEMPT TO RECHARGE THE BATTERY - DANGER OF EXPLOSION

°

DO NOT OPEN THE BATTERY CASING - DANGER OF ACID BURN

Only dispose of the battery in official recycling centres or municipally approved areas. Alternatively, used batteries can be returned to Welch Allyn Schiller for disposal.

Unit Disposal Instructions Units no longer required can be returned to Welch Allyn Schiller for disposal. Alternatively dispose of the unit in municipally approved recycling centres.

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This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to both Part 15 of the FCC (Federal Communications Commision) Rules and the radio interference regulations of the Canadian Department of Communications. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Disposal Instructions ° and Battery Care

DO NOT DISPOSE OF THE BATTERY BY FIRE OR INCINERATOR DANGER OF EXPLOSION

°

DO NOT ATTEMPT TO RECHARGE THE BATTERY - DANGER OF EXPLOSION

°

DO NOT OPEN THE BATTERY CASING - DANGER OF ACID BURN

Only dispose of the battery in official recycling centres or municipally approved areas. Alternatively, used batteries can be returned to Welch Allyn Schiller for disposal.

Unit Disposal Instructions Units no longer required can be returned to Welch Allyn Schiller for disposal. Alternatively dispose of the unit in municipally approved recycling centres.

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Power Supply The mains connection is on the rear of the unit. The power supply voltage is set by the factory for100-115V(nom. 110V) or 220-240V (nom. 230V) working. The setting is indicated by the indented metal strip on the fuse panel. Contact your dealer if the voltage needs to be changed. The mains indicator lamp on the keyboard is always lit when the unit is connected to the mains supply. The unit can either be operated from the mains supply or from the built-in rechargeable battery. The power source is indicted on the top line of the LCD. Changing a Mains Fuse If it is necessary to change a fuse, always replace with the correct rating i.e 2x200mAT for 230V, or 2x315mAT for 110V . To change a fuse press the two retaining lugs on side of the fuse panel (situated below the mains connector on the back panel. Remove the fuse panel and replace the fuse(s). Click back the fuse panel.

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Power Supply The mains connection is on the rear of the unit. The power supply voltage is set by the factory for100-115V(nom. 110V) or 220-240V (nom. 230V) working. The setting is indicated by the indented metal strip on the fuse panel. Contact your dealer if the voltage needs to be changed. The mains indicator lamp on the keyboard is always lit when the unit is connected to the mains supply. The unit can either be operated from the mains supply or from the built-in rechargeable battery. The power source is indicted on the top line of the LCD. Changing a Mains Fuse If it is necessary to change a fuse, always replace with the correct rating i.e 2x200mAT for 230V, or 2x315mAT for 110V . To change a fuse press the two retaining lugs on side of the fuse panel (situated below the mains connector on the back panel. Remove the fuse panel and replace the fuse(s). Click back the fuse panel.

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AT-2 User Guide This User Guide gives instructions on how to operate the unit and provides an overview of all the basic functions in an easy and simple to use format. The procedures are presented in a logical, step-by step way to enable the user to quickly and easily familiarise themselves with unit operation. Detailed medical information is excluded from this guide except where necessary to operate the unit or understand the results.

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AT-2 User Guide This User Guide gives instructions on how to operate the unit and provides an overview of all the basic functions in an easy and simple to use format. The procedures are presented in a logical, step-by step way to enable the user to quickly and easily familiarise themselves with unit operation. Detailed medical information is excluded from this guide except where necessary to operate the unit or understand the results.

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English Version

AT-2 User Guide

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English Version

AT-2 User Guide

Page 1

Table of Contents Introduction ... 5 Operation Modes ... 6 Automatic Mode ... 6 Manual Mode ... 7 Location & Power ... 8 Basic Information... 9 Indicators ... 12 General Settings ... 13 Default Settings ... 14 Baseline Filter ... 18 Mains Filter ... 19 Myogram Filter... 20 Defining Lead Sequence & Printout ... 21 Acoustic QRS Indication ... 22 Time / Date ... 23

AT-2 User Guide

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Table of Contents Introduction ... 5 Operation Modes ... 6 Automatic Mode ... 6 Manual Mode ... 7 Location & Power ... 8 Basic Information... 9 Indicators ... 12 General Settings ... 13 Default Settings ... 14 Baseline Filter ... 18 Mains Filter ... 19 Myogram Filter... 20 Defining Lead Sequence & Printout ... 21 Acoustic QRS Indication ... 22 Time / Date ... 23

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AT-2 User Guide

Settings for Automatic Mode ... 24 Average Cycles ... 25 Measurements and Markings ... 26 Interpretation ... 27 Interpretation Settings ... 28 Selecting Rhythm Leads ... 29 Patient Cable Connections ... 30 Recording an ECG in Automatic Mode ... 33 Recording an ECG in Manual Mode... 35 Care & Maintenance ... 37 Replacing the Recording Paper ... 39 Trouble Shooting ... 41 Technical Data ... 42 Available Configurations ... 46

AT-2 User Guide

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Settings for Automatic Mode ... 24 Average Cycles ... 25 Measurements and Markings ... 26 Interpretation ... 27 Interpretation Settings ... 28 Selecting Rhythm Leads ... 29 Patient Cable Connections ... 30 Recording an ECG in Automatic Mode ... 33 Recording an ECG in Manual Mode ... 35 Care & Maintenance ... 37 Replacing the Recording Paper ... 39 Trouble Shooting ... 41 Technical Data ... 42 Available Configurations ... 46

AT-2 User Guide

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AT-2 User Guide

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AT-2 User Guide

Introduction The AT-2 is a 6-channel ECG recorder. All ECG signals are simultaneously processed to provide instant ECG recordings. Two automatic recording modes can be individually preset to enable one button ECG recording of preferred print formats. Individual lamps are provided to give power, paper error, filter, lead group and lead off indications. In addition, any detected disturbance (i.e. loose electrode or end of paper), gives an audible alarm and the corresponding indicator lamp flashes. The AT-2 includes the following features: n

Low weight and compact dimensions

n

Large A4 size printout from integrated quality thermal printer

n

Built-in rechargeable battery for mains-independent use

n

Simple one key operation

n

Automatic or manual recording modes

n

Selectable printing formats

n

ECG memory for easy copying

n

Interpretation program option (including measurements)

AT-2 User Guide

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Introduction The AT-2 is a 6-channel ECG recorder. All ECG signals are simultaneously processed to provide instant ECG recordings. Two automatic recording modes can be individually preset to enable one button ECG recording of preferred print formats. Individual lamps are provided to give power, paper error, filter, lead group and lead off indications. In addition, any detected disturbance (i.e. loose electrode or end of paper), gives an audible alarm and the corresponding indicator lamp flashes. The AT-2 includes the following features: n

Low weight and compact dimensions

n

Large A4 size printout from integrated quality thermal printer

n

Built-in rechargeable battery for mains-independent use

n

Simple one key operation

n

Automatic or manual recording modes

n

Selectable printing formats

n

ECG memory for easy copying

n

Interpretation program option (including measurements)

AT-2 User Guide

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Operation Modes Auto Mode Recording

Automatic Mode Automatic Mode provides a printout giving 10 seconds of ECG recording of all 12 leads in 2 different formats.

Connect Patient Pages 28 to 30

The following can be programmed freely in each of the formats before recording: n

Lead Format

n

Chart Speed

n

With the optional interpretation progam installed is also possible to select the measurement table, average cycles with optional markings and interpretation statements for the printout.

For further information, see paragraph "Settings for Automatic Mode".

Switch Unit ON Settings Pages 11 to 27

Automatic Recording in Format 1

Automatic Recording in Format 2

Pages 31 to 32

Pages 31 to 32

12 lead printout AT-2 User Guide

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Operation Modes Auto Mode Recording

Automatic Mode Automatic Mode provides a printout giving 10 seconds of ECG recording of all 12 leads in 2 different formats.

Connect Patient Pages 28 to 30

The following can be programmed freely in each of the formats before recording: n

Lead Format

n

Chart Speed

n

With the optional interpretation progam installed is also possible to select the measurement table, average cycles with optional markings and interpretation statements for the printout.

For further information, see paragraph "Settings for Automatic Mode".

Switch Unit ON Settings Pages 11 to 27

Automatic Recording in Format 1

Automatic Recording in Format 2

Pages 31 to 32

Pages 31 to 32

12 lead printout

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AT-2 User Guide

Operation Modes Manual Mode Recording

Manual Mode Manual Mode provides a real time printout of 6 leads that are selected and indicated on the keyboard.

Connect Patient Pages 28 to 30

The following can be freely selected before or during recording: n

Lead Group

n

Chart Speed

n

Sensitivity

n

Myogram Filter

For further information see paragraph "ECG Recording in Manual Mode".

Switch Unit ON Settings Pages 11 to 27

Manual Recording Pages 33 to 34

Leads, Speed, Sensitivity, Myogram filter Pages 18 + 33

Continuous printout of 6 leads AT-2 User Guide

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Operation Modes Manual Mode Recording

Manual Mode Manual Mode provides a real time printout of 6 leads that are selected and indicated on the keyboard.

Connect Patient Pages 28 to 30

The following can be freely selected before or during recording: Switch Unit ON n

Lead Group

n

Chart Speed

n

Sensitivity

n

Myogram Filter

For further information see paragraph "ECG Recording in Manual Mode".

Settings Pages 11 to 27

Manual Recording Pages 33 to 34

Leads, Speed, Sensitivity, Myogram filter Pages 18 + 33

Continuous printout of 6 leads

AT-2 User Guide

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Location & Power Location Do no keep or operate the apparatus in a we, moist or duty environment. Also, avoid exposure to direct sunlight or heat from other sources. Do not allow the unit to come into contact with acidic vapours or liquids, as such contact may cause irreparable damage. The unit should not be placed near X-ray or diathermy units, large transformers or motors. The unit must be placed on a flat surface. The unit should not be operated in areas where there is any danger of explosion.

Power Supply The unit can either be operated from the built-in rechargeable battery or from the mains. The mains connection is on the rear of the unit. The mains indicator lamp is always lit when the unit is connected to the mains supply. A battery indicator lamp confirms battery operation. When the battery capacity is limited, the indicator flashes. To recharge the battery, connect the apparatus to the mains supply by means of the supplied power cable. A totally discharged battery needs less than 15 hours to be fully recharged (60% in less than 3 hours, 90% in less than 7 hours). A fully charged battery lasts approximately 3-4 hours of normal use. The unit can remain connected to the mains supply without any danger of damage to either the battery or the unit. AT-2 Page 8 User Guide

Location & Power Location Do no keep or operate the apparatus in a we, moist or duty environment. Also, avoid exposure to direct sunlight or heat from other sources. Do not allow the unit to come into contact with acidic vapours or liquids, as such contact may cause irreparable damage. The unit should not be placed near X-ray or diathermy units, large transformers or motors. The unit must be placed on a flat surface. The unit should not be operated in areas where there is any danger of explosion.

Power Supply The unit can either be operated from the built-in rechargeable battery or from the mains. The mains connection is on the rear of the unit. The mains indicator lamp is always lit when the unit is connected to the mains supply. A battery indicator lamp confirms battery operation. When the battery capacity is limited, the indicator flashes. To recharge the battery, connect the apparatus to the mains supply by means of the supplied power cable. A totally discharged battery needs less than 15 hours to be fully recharged (60% in less than 3 hours, 90% in less than 7 hours). A fully charged battery lasts approximately 3-4 hours of normal use. The unit can remain connected to the mains supply without any danger of damage to either the battery or the unit. AT-2 User Guide Page 8

Basic Information Switching On and Off The AT-2 is swiched on by means of the green

key and off by means of the red

key..

The unit is switched off after 5 minutes (30 seconds if battery capacity is limited) if no key is pressed and the patient cable is not disconnected.

Potential Equalization If the AT-2 is used in conjunction with other patient connected equipment, we recommend that the potential equalization stud (

) on the rear of the unit is connected to the hospital/building commond

ground with the yellow/green ground cable (Part. no. 2.310 005). When working from an emergency vehicle, the vehicle common ground can be used.

AT-2 User Guide

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Basic Information Switching On and Off The AT-2 is swiched on by means of the green

key and off by means of the red

key..

The unit is switched off after 5 minutes (30 seconds if battery capacity is limited) if no key is pressed and the patient cable is not disconnected.

Potential Equalization If the AT-2 is used in conjunction with other patient connected equipment, we recommend that the potential equalization stud (

) on the rear of the unit is connected to the hospital/building commond

ground with the yellow/green ground cable (Part. no. 2.310 005). When working from an emergency vehicle, the vehicle common ground can be used.

AT-2 User Guide

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Keyboard

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AT-2 User Guide

Keyboard Lead group selector (backward)

Cancel or enable QRS beeper

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AT-2 User Guide

Keyboard Switch unit on Switch unit off Copy stored ECG

Cancel or enable QRS beeper Automatic ECG sensitivity adjustment from 10 to 5 mm/mV in order to avoid overlapping traces in automatic mode only

Start automatic recording Start manual recording

ECG sensitivity selector (5, 10 or 20 mm/ mV) manual recording only

Stop recording/move paper to start position

Chart speed selector (5, 25 or 50 mm/s) manual recording only

Swith myogram filter (muscle tremor filter) on or off

Key for 1mV indication mark on output druing manual recording. Use this key also for baseline recentering.

Lead group selector (forward) Lead group selector (backward)

AT-2 User Guide

Key for initiation of setups and selection of second format for printout.

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Keyboard Switch unit on Switch unit off Copy stored ECG

Cancel or enable QRS beeper Automatic ECG sensitivity adjustment from 10 to 5 mm/mV in order to avoid overlapping traces in automatic mode only

Start automatic recording Start manual recording

ECG sensitivity selector (5, 10 or 20 mm/ mV) manual recording only

Stop recording/move paper to start position

Chart speed selector (5, 25 or 50 mm/s) manual recording only

Swith myogram filter (muscle tremor filter) on or off

Key for 1mV indication mark on output druing manual recording. Use this key also for baseline recentering.

Lead group selector (forward) Lead group selector (backward)

AT-2 User Guide

Key for initiation of setups and selection of second format for printout.

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