Schiller AT-101 User manual

AT-101

AT-101

12-Channel ECG Unit

Art.-no.: 2.510526 Rev.: c *2.510526*

User Guide

Sales and Service Information

The SCHILLER sales and service centre network is world-wide. For the address
of your local distributor, contact your nearest SCHILLER subsidiary. In case of dif­ficulty a complete list of all distributors and subsidiaries is provided on our internet
site: http://www.schiller.ch.

Sales information can also be obtained from:

[e-mail]

Address Headquarters

SCHILLER AG Phone: [phone]
Altgasse 68 Fax: [phone],
CH-6341 Baar, Switzerland E-mail: [e-mail]
Web: www.schiller.ch

Artikel-Nr.: 2.510526 Rev.: c
Issue date: 25.05.05

AT-101

User Guide

Contents

1 Safety notes ..............................................3

1.1 Responsibility of the User .................................................. 3

1.2 Intended Use ........................................................................ 3

1.3 Organisational Measures..................................................... 3

1.4 Safety-conscious Operation................................................ 4

1.5 Safety Facilities .................................................................... 4

1.6 Operation with other Devices .............................................. 5

1.7 Maintenance.......................................................................... 5

1.8 Safety Symbols and Pictograms......................................... 6

1.8.1 Used symbols in this document ......................................................... 6

1.8.2 Used symbols on the device .............................................................. 7

1.9 Terms of Warranty................................................................ 8

2 Introduction ..............................................9

2.1 Features................................................................................. 9

2.1.1 Standard Features ............................................................................. 9

2.1.2 Optional Features............................................................................... 9

2.2 Operating Philosophy Overview ....................................... 10

2.2.1 Initiating Functions or Tasks ............................................................ 10

2.2.2 Main Components of the AT-101 ..................................................... 11

2.2.3 Back Panel....................................................................................... 11

2.3 Keypad................................................................................. 12

2.4 LCD Screen ......................................................................... 14

3 Operation ................................................ 15

3.1 Start-up and Initial Preparation ......................................... 15

3.1.1 Connecting AT-101 .......................................................................... 15

3.1.2 Battery Operation............................................................................. 16

3.1.3 Switching ON and OFF .................................................................... 16

3.1.4 Isolating the Mains Supply ............................................................... 16

3.1.5 Potential Equalisation....................................................................... 16

3.1.6 Inserting Printing Paper ................................................................... 17

3.1.7 LCD contrast adjustment.................................................................. 17

3.2 Entering Patient Data ......................................................... 18

4 Resting ECG ........................................... 19

4.1 Electrode Placement .......................................................... 19

4.2 Further Lead Combinations............................................... 21

4.2.1 Nehb Leads...................................................................................... 21

4.2.2 Electrode Positions for Additional Leads.......................................... 22

Art.-no.: 2.510526 Rev.: c

4.2.3 Electrodes and Neutral Electrodes Identification and

Colour Code..................................................................................... 23

4.3 Skin/Electrode Resistance................................................. 24

4.3.1 High Electrode Resistance Indication .............................................. 24

4.3.2 Electrode and Patient cable Check (Lead Test)............................... 24

4.4 Modes of Operation and Procedural

Page 1

AT-101

Overview.............................................................................. 25

4.4.1 Automatic Mode............................................................................... 26

4.4.2 Manual Mode ................................................................................... 27

4.4.3 Screen (and Manual Printout) Settings ............................................ 28

4.5 Memory (option).................................................................. 30

4.5.1 Transmitting the Recordings............................................................ 31

5 Setup ........................................................32

5.1 Entering the SETUP Menu ................................................. 32

5.1.1 Navigating in the Setup Screens...................................................... 32

5.2 ECG Settings....................................................................... 33

5.2.1 Automatic Format 1 and 2 Internal Printer ....................................... 34

5.2.2 Automatic Format 1 and 2 External Printer...................................... 35

5.2.3 Filters ............................................................................................... 36

5.2.4 Interpretation (Only with version C) ................................................. 37

5.2.5 Leads ............................................................................................... 38

5.2.6 General (only with version m = Memory) ......................................... 38

5.3 System Settings.................................................................. 39

5.3.1 Unit................................................................................................... 40

5.3.2 Communication ............................................................................... 41

5.3.3 Communication with SCM................................................................ 42

5.3.4 Test and Information........................................................................ 43

5.3.4.1 Print Setup ....................................................................................... 44

5.3.4.2 Communications Test ...................................................................... 45

5.3.4.3 Installing New Software Options (Upgrade)..................................... 45

5.3.4.4 Update the Software ........................................................................ 45

5.3.4.5 Default Settings................................................................................ 46

6 Care & Maintenance ...............................47

6.1 Service interval ................................................................... 47

6.2 Communication (RS-232) Test........................................... 47

6.3 Maintenance interval for the battery ................................. 48

6.3.1 Charging the battery ....................................................................... 48

6.3.2 Battery disposal ............................................................................... 48

6.4 Changing the fuse and mains voltage .............................. 49

6.5 Cleaning............................................................................... 50

6.5.1 Cleaning the Casing......................................................................... 50

6.5.2 Cleaning the Patient Cable .............................................................. 50

6.5.3 Cleaning the Thermal Print Head..................................................... 50

6.6 Replacing the Recording Paper ........................................ 51

6.6.1 Thermal Paper Handling .................................................................. 51

6.7 Fault-Finding ....................................................................... 52

6.7.1 Accessories and Disposables .......................................................... 53

7 Technical Data ........................................54

7.1 System ................................................................................. 54

7.2 Technical Data for ECG...................................................... 55

7.3 Safety Standards ................................................................ 56

8 Index ........................................................57

Art.-no.: 2.510526 Rev.: c

Page 2

Safety notes 1

AT-101 User Guide Responsibility of the User 1.1

1 Safety notes

1.1 Responsibility of the User

V This device must only be used by qualified doctors or trained medical personnel.
V The numerical and graphical results and any interpretation given must be exami-

ned with respect to the overall clinical condition of the patient and the general re­corded data quality.

V The indications given by this equipment are not a substitute for regular checking

of vital functions.

V Specify the competencies of the personnel for operation and repair.
V Ensure that personnel have read and understood these operating instructions. In

particular this chapter “safety notes" must be read and understood.

V Have damaged or missing components replaced immediately.
V The operator is responsible for compliance with all applicable accident prevention

regulations and safety regulations.

1.2 Intended Use

V The AT-101 is a 12-channel, ECG device used for the recording, analysis and

evaluation of ECG Recordings. Recordings made with the AT-101 can be used
as a diagnostic aid for heart function and heart conditions. The AT-101 is desi­gned for indoor use and can be used for all patients of both sexes, all races, and
all ages.

V There is no danger for patients with pacemaker.
V Only operate the device in accordance with the specified technical data.
V The device is not designed for sterile use nor is it designed for outdoor use.
V Do not use this unit in areas where there is any danger of explosion or in the

presence of flammable gases such as anaesthetic agents.

V This unit is CF classified and defibrillation protected only when the original

patient cable is used. However, as a safety precaution when possible, remove
electrodes before defibrillation.

V This product is not designed for internal use.This product is not designed for di-

rect cardiac application.

1.3 Organisational Measures

V Before using the unit, ensure that an introduction regarding the unit functions and

the safety precautions has been provided by a medical product representative.

V Keep these operating instructions in an accessible place for reference when re-

quired. Make sure that they are always complete and legible.

V Observe the operating instructions and maintenance instructions.
V These operating instructions do not override any statutory or local regulations, or

Art.-no.: 2.510526 Rev.: c

procedures for the prevention of accidents and environmental protection.

Page 3

1 Safety notes

1.4 Safety-conscious Operation

1.4 Safety-conscious Operation

1.5 Safety Facilities

AT-101

V Make sure that the staff has read and understood the operating instructions - par-

ticularly the "Safety Notes" chapter.

V Do not touch the unit casing during defibrillation.
V To ensure patient safety, none of the electrodes including the neutral electrode,

nor the patient or any person with simultaneous patient contact, must come in
contact with conductive parts, even when these are earthed.

V Immediately report any changes that impair safety (including operating beha-

viour) to the person responsible.

V Do not place any liquids on the unit. If liquid should be spilled over the device,

immediately disconnect the device from the mains and wipe it. The device must
be serviced before reusing.

V Only connect the original SCHILLER patient cable to the patient socket.

V Operating the device without the correctly rated fuse, or with defective cables,

constitutes a danger to life. Therefore:

– Do not operate the unit if the earth connection is suspect or if the mains lead is

damaged or suspected of being damaged.

– Damaged cable connections and connectors must be replaced

immediately.
– The electrical safety devices, such as fuses, must not be altered.
– Ruptured fuses must only be replaced with the same type and rating as the ori-

ginal.

Page 4

Art.-no.: 2.510526 Rev.: c

Safety notes 1

AT-101 User Guide Operation with other Devices 1.6

1.6 Operation with other Devices

V 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.

V Ancillary equipment connected to the analogue and/or digital interfaces must be

certified according to the respective IEC standards (e.g. IEC/EN 60950 for data
processing equipment and IEC/EN 60601-1 for medical equipment). Furthermore
all configurations shall comply with the valid version of the system standard IEC/
EN 60601-1-1. Everybody who connects additional equipment to the signal input
part or signal output part configures a medical system, and is therefore responsi­ble that the system complies with the requirements of the valid version of the sy­stem standard IEC/EN 60601-1-1. If in doubt, consult the technical service de­partment or your local representative.

– EC/EN 60601-1-1 states that the patient must remain at least 1.5 meters clear

of the unit. If this is not possible, a safety isolating transformer must be installed.

V Any other equipment used with the patient must use the same common earth as

the AT-101.

V Precautions must be observed when using high frequency devices. Use the spe-

cial high frequency SCHILLER patient cable to avoid possible signal interference
during ECG acquisition.

V There is no danger when using the ECG unit simultaneously with electrical stimu-

lation equipment. However, the stimulation units should only be used at a suf­ficient distance from the electrodes. If in doubt, the patient should be disconnec­ted from the device.

V If the patient cable should become defective after defibrillation, an electrode be-

comes displaced, or an electrode resistance is too high, a lead-off indication is
displayed in the upper right part of the screen and an acoustic alarm given.

V If the device is a part of a medical system, the original SCHILLER patient cable

must only be used with, and connected to, the patient connector on the AT-101.

1.7 Maintenance

V Danger of electric shock! Do not open the device. No serviceable parts inside.

Refer servicing to qualified technician authorised by SCHILLER only.

V Before cleaning and to isolate the mains power supply, switch the unit off and dis-

connect it from the mains by removing the plug.

V Do not use high temperature sterilisation processes

(such as autoclaving). Do not use E-beam or gamma radiation sterilisation.

V Do not use solvent or abrasive cleaners on either the unit or cable assemblies.
V Do not, under any circumstances, immerse the unit or cable assemblies in liquid.

Art.-no.: 2.510526 Rev.: c

Page 5

1 Safety notes

1.8 Safety Symbols and Pictograms

1.8 Safety Symbols and Pictograms

1.8.1 Used symbols in this document

AT-101

The safety level is classified according ANSI Z535.4. The following overview shows
the used safety symbols and pictograms used in this manual.

For a direct danger which could lead to severe personal injury or to death.

For a possibly dangerous situation, which could lead to heavy bodily injury or to death.

For a possibly dangerous situation which could lead to personal injury. This symbol is
also used to indicate possible damage to property.

For general safety notes as listed in this chapter.

Used for electrical dangers, warnings and other notes in regarding operation with elec­tricity.

Note For possibly dangerous situations, which could lead to damages to property or
system failure. Important or helpful user information

Reference to other guidelines

Page 6

Art.-no.: 2.510526 Rev.: c

Safety notes 1

AT-101 User Guide Safety Symbols and Pictograms 1.8

1.8.2 Used symbols on the device

Potential equalization

CF symbol. This unit is classified safe for internal and external use. However, It is only
defibrillation protected when used with the original SCHILLER patient cable!

Inappropriate disposal can lead to environmental pollution.

Units/components and accessories no longer required can be returned to SCHILLER
AG for disposal. Alternatively, the unit should be disposed of in a municipally appro­ved recycling centre.

Notified body of the CE certification (TÜV P.S.)

Attention: Consult accompanying documents.

Art.-no.: 2.510526 Rev.: c

Page 7

1 Safety notes

1.9 Terms of Warranty

AT-101

1.9 Terms of Warranty

The SCHILLER AT-101 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 SCHILLER AT-101 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
particulare purpose with respect to the product or parts therefof.

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 Commis­sion) 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.

Page 8

Art.-no.: 2.510526 Rev.: c

Introduction 2

AT-101 User Guide Features 2.1

2 Introduction

2.1 Features

The SCHILLER AT-101 is a 12-channel ECG unit designed to record, display, and
analyse resting ECGs. The unit has been extensively researched to give an ergono­mic, clear interface that‘s easy to use without compromising functionality. The AT-101
has the following features:

2.1.1 Standard Features

• Alphanumeric keypad and dedicated soft key interface for easy, user friendly
operation.

• Integral thermal quality printer with various user defined print format
options.

• Measurements and average cycles with automatic and manual printout of the re­cording.

2.1.2 Optional Features

• External printers

• ECG Interpretation

• Memory for up to 40 recordings

• Thrombolysis

• SCHILLER Communication modul (SCM) for data transmission to server via:
– Ethernet

– Modem (option)

Art.-no.: 2.510526 Rev.: c

Page 9

2 Introduction

2.2 Operating Philosophy Overview

2.2 Operating Philosophy Overview

AT-101

There are broadly four types of data display as follows:

Data Acquisition and ECG
Recording Screen

In this screen the real-time ECG is displayed. From this screen a continuous printout
can be initiated and/or an auto recording can be made. In auto mode 10 seconds of
ECG data is analysed and averaged and the results given on a printout. The format
and data of an auto mode printout is independent of the screen display, and is defined
in the setup screens. (See paragraph 5.2 page 34).

An auto mode recording can also be stored in the memory for later print or
transmission.

Memory Screen In this screen stored recordings can be accessed, printed and transmitted.

Patient Data Screen Patient data entry via the keypad.

Data Entry and Setup In these screens all system settings are made.

2.2.1 Initiating Functions or Tasks

Most functions and tasks are initiated by the 5 softkeys (1) situated immediately below
the LCD. The function of the softkeys varies according to the screen displayed and is
displayed on the LCD immediately above the key itself.

During data acquisition, further dedicated function keys are provided to make an auto
mode recording (START) and to stop a manual printout (STOP). The top line of the
alphanumeric keypad, additionally enables direct settings of lead group, trace speed
and sensitivity, filter on/off and other functions, for both the real-time display and
(manual) printout.

LEAD
TEST

1

Fig. 2.1 Start-up screen

MANUAL

PRINT

HR:

78 / min

FILTER OFF

MENU

Art.-no.: 2.510526 Rev.: c

Page 10

Introduction 2

AT-101 User Guide Operating Philosophy Overview 2.2

2.2.2 Main Components of the AT-101

(1) LCD Display
(2) Softkey control
(3) Keypad and dedicated function keys
(4) Printer

1

2

3

4

2.2.3 Back Panel

V All externally connected hardware must be approved by SCHILLER. Connection

of any hardware not approved by SCHILLER is at the owner‘s risk. The unit gua­rantee may also be invalid. See also safety note paragraph 1.6.

(1) Patient cable connector
(2) LPT connector for the connection of an external printer
(3) RS-232 for connection of a modem or a PC for export of stored recordings
(4) Mains connector (with fuse above)
(5) RJ11 Modem connector with SCM (option)
(6) Potential equalisation stud
(7) RJ45 connector for Ethernet with SCM (option)

2

Art.-no.: 2.510526 Rev.: c

1

3

4
5

6
7

Page 11

2 Introduction

2.3 Keypad

2.3 Keypad

HR:

78 / min

FILTER OFF

AT-101

LEAD

TEST

2

MANUAL

PRINT

MENU

3

1

(1) Softkeys - the function of these keys changes depending on the screen display-

ed. The function of these keys is shown on the screen above the keys. If nothing
is written above a softkey, it has no function for the current screen.

(2) Auto Mode recording (in Auto mode 1). Press the SHIFT followed by the START

key (2) for auto mode 2.

(3) STOP printout

Page 12

Art.-no.: 2.510526 Rev.: c

17

Introduction 2

AT-101 User Guide Keypad 2.3

4 5 6 7 8 9 10 11 12 13

16

(4) The top figures on the number keys ‘1‘and ‘2‘(designated < and >), change the

lead group displayed on the screen, forward and backward resp.

(5) Auto sensitivity key - automatically sets the ECG printout sensitivity (in AUTO

mode only) to the best setting for the signal strength (5mm/mV or 10mm/mV)

(6) The top figures on the number keys designated 5, 10, and 20 set the sensitivity

of the ECG both on the screen and on the (manual) printout. The sensitivity is
5, 10 or 20 mm / mV.

(7) The top figures on the number keys designated 5/10, 25, and 50 set the speed

of the ECG both on the screen and on the (manual) printout. The speed on the
screen can only be set to 25 or 50 mm/s. The speed of the manual printout can
be 5, 10, 25 or 50 mm/s. The 5 and 10 mm/s settings are both on the same key

which toggles the two speeds.
(8) Inserts a 1mV reference marker on the screen and printout. Recentres the trace.
(9) Toggles the QRS beeper ON/ OFF

(10) Myogram filter ON / OFF. The cutoff frequency can be user defined in ‘Setup‘.
(11) Delete last typed character.
(12) Patient data key. Press this key to enter a new patient or modify the data for the

current one.

1415

The patient data screen, or the ECG screen is the first screen displayed on initial
switch on. This is set for user preference in the SYSTEM SETTINGS/UNIT (see
page 41).

(13) ON / OFF Key
(14) Mains Indicator - lit when mains connected.

(15) Press the function key (16) and the UP/DOWN arrows to adjust screen contrast.

When entering patient data use the LEFT/RIGHT arrow keys to move the cursor
in the data field. Use the UP/DOWN arrow keys to go up/down to the next data
entry

Art.-no.: 2.510526 Rev.: c

(16) Shift key to select capital letters.
(17) Function Key. When pressed before another key, initiates the second function

of that key.

For example, second letters on the keypad -, é, è, ç, Ø, ›, @ etc., are entered

by holding the function key before pressing the letter key.

Page 13

2 Introduction

2.4 LCD Screen

AT-101

2.4 LCD Screen

The display will vary according to the current task being carried out. In all screens
however, the top and bottom lines always display the same information: the top line
displays system information, and the bottom line always gives the softkey options.

The following is an example of a typical resting ECG screen.

1

HR:

78 / min

~

4

5

2

6
7

8

FILTER OFF

9
10

3

LEAD
TEST

MANUAL

PRINT

MENU

Items 1, 2 and 3 are in the same position for all screens.

(1) Top line - time, date, patient name, and current power source - mains (~), or bat-

tery ( ). When battery capacity is limited the battery symbol flashes.

(2) Data acquisition area or data entry area.
(3) Softkey designation. Pressing the key below the text carries out the function in-

dicated. The options available will change according to the screen displayed.

Items 4 to 10 are specific for ECG acquisition only:

Page 14

(4) Current Heart Rate (averaged over 4 beats and refreshed every 2 seconds).

The HR is also given on a manual printout. Note that with an auto mode printout
the HR is averaged over the full 10 seconds of the recording.

(5) Electrode connections - when an electrode indication flashes (an audible alarm

is also given), it indicates that the electrode resistance is too high. The electro­de(s) must be reapplied.

(6) Sensitivity 5, 10 or 20 mm/mV. Change the sensitivity with the keys 3 (auto), 4,

5 and 6. An ‘A‘ in this box indicates that automatic sensitivity is selected (auto
mode printout only).

(7) Speed 25 or 50 mm/s. Change the speed with the keys 8 and 9.
(8) Lead indication (leads currently displayed on the screen). Change the lead

group with the < and > keys on the keypad.

1

Myogram Filter indication - ‘Filter ON’ or ‘Filter OFF’. The filter is applied with

(9)

the filter key.

(10) Area for system messages or instructions.

1.The frequency of the filter cutoff is defined on page 37 menu Filters.

Art.-no.: 2.510526 Rev.: c

Operation 3

AT-101 User Guide Start-up and Initial Preparation 3.1

3Operation

3.1 Start-up and Initial Preparation

V Danger of electrical shock. Do not operate the unit if the earth connection is su-

spect or if the mains lead is damaged or suspected of being
damaged.

3.1.1 Connecting AT-101

(1) Potential equalisation
(2) Mains connection (100 - 115 or 220 - 240 V)
(3) RS-232 (see safety note paragraph 1.6)
(4) Printer (see safety note paragraph 1.6)

Fig. 3.1 AT-101 back panel

1. Check Voltage setting (2) 115 or 230 V. Refer to chapter 6.4 for the mains voltage.

5

6

7

HR:

78 / min

Art.-no.: 2.510526 Rev.: c

FILTER OFF

2. Connect the power cable at the rear of the unit.
The mains indicator lamp (6) is always lit when the unit is connected to the mains
supply. If the unit is switched on, the relevant symbol is displayed on the LCD (7)
Leave the AT-101 connected to the mains for 7 hours to fully charge the battery.

3. Connect the potential equalisation cable and all other necessary cables at the
rear of the AT-101.

4. Press the on/off button (5). The patient data or the ECG acquisition screen is dis­played (see paragraph 5.3.1.)

5. Check the settings according to chapters 5.

6. Connect the patient cable on the right side panel.

Page 15

3Operation

3.1 Start-up and Initial Preparation

3.1.2 Battery Operation

HR:

78 / min

FILTER OFF

1

AT-101

Important

The unit can either be operated from the mains supply or from the built-in rechargea­ble battery. The power source is indicated on the top line of the LCD. The internal bat­tery provides power for up to 3 hours.

• When the unit is running on battery power a battery symbol (1) is displayed.

• When working from battery power, the unit is automatically switched off after 5 mi­nutes (30 seconds if battery capacity is limited) if no key is pressed.

• for Battery recharging refer to chapter 6.3.

• The unit can remain connected to the mains supply without damage to either the
battery or the unit.

3.1.3 Switching ON and OFF

« The AT-101 is switched ON and OFF with the ON/OFF key.

3.1.4 Isolating the Mains Supply

To isolate the power supply, remove the mains plug from the wall socket.
(see Fig. 3.1)

3.1.5 Potential Equalisation

The potential equalisation stud (see Fig. Fig. 3.1) at the rear of the unit can be used
to equalise the ground potential of the AT-101 to that of all mains powered equipment
in the vicinity. Use the hospital or building common ground

V To prevent the possibility of leakage current when an external printer is connec-

ted, always ensure that the mains lead, or the potential equalisation (next to the
mains connector), is attached to the AT-101

A yellow/green ground cable for connection to the potential equalisation stud is sup­plied as an option (Article number 2.310005).

Page 16

Art.-no.: 2.510526 Rev.: c

Operation 3

AT-101 User Guide Start-up and Initial Preparation 3.1

3.1.6 Inserting Printing Paper

Important

The device is delivered without printing paper installed. Only use original SCHILLER
printing paper. The thermo-paper is sensitive to heat, humidity and chemical vapours.
Store the paper in a cool and dry area.

1. Press the locking catch (1) to the right.

1

2. Open the printer door upward.

3. Insert paper and pull it down.

4. Close the cover. Be sure that the paper lies exactly between the rails.

5. Press the STOP key to transport the paper to the start position.

3.1.7 LCD contrast adjustment

« Press the function key FN and the UP/DOWN arrows to adjust screen contrast.

Art.-no.: 2.510526 Rev.: c

Page 17

3Operation

3.2 Entering Patient Data

3.2 Entering Patient Data

In this screen a new patient can be entered, or a the details of a selected patient can
be modified.

« Press the patient data key.

Last Name : _
First name :
Pat. # :
Born : (dd-mm-yyyy)
Age :
Gender :
Height : cm
Weight : kg
BP : mmHg
Medications :

MENU

AT-101

Last Name Enter patients name (maximum 20 characters)

First Name Enter patients first name (maximum 20 characters)

Pat. No. The patient number is an easily identifiable short form of identifying a patient - a ma-

ximum of 20 characters can be entered.

Born Enter patient‘s date of birth dd-mm-yyyy

The patient age is calculated to the nearest year.

Age Self calcualted when entering date of birth.

Gender Enter the patient‘s sex - M or F

Height Enter patient‘s height 20...250cm (10...80 inches)

Weight Enter patient‘s weight 0.5...250kg (5...500 lbs)

BP Enter the patient‘s systolic (or diastolic) blood pressure.

Medication Up to 23 characters can entered for medication notes

When all entries are made, press the softkey MENU to confirm the entered data.

Page 18

Art.-no.: 2.510526 Rev.: c

Resting ECG 4

AT-101 User Guide Electrode Placement 4.1

4 Resting ECG

V The guidelines for patient electrode placement are provided as an overview only.

They are not a substitute for medical expertise.

4.1 Electrode Placement

The colours shown here are according to Code 1 (European) requirements. The equi­valent code 2 colours are given on paragraph 4.2.3.

Art.-no.: 2.510526 Rev.: c

Page 19

4Resting ECG

4.1 Electrode Placement

AT-101

A minimal resistance between skin and electrode is required to obtain the best ECG
signal and ensure the highest quality ECG recording. Therefore please note the follo­wing points:

1. Ensure that the patient is warm and relaxed.

2. Shave electrode area before cleaning.

3. Thoroughly clean the area with alcohol.

4. When applying the electrodes, ensure that a layer of gel is between the electrode

and the skin.

5. Place the C4 electrode first - in the 5th intercostal space (ICS) so that it lines up

approximately with the middle of the clavicle.

6. Then place:
– C1 in the 4th ICS parasternal right

– C2 in the 4th ICS parasternal left
– C3 between, and equidistant to, C4 and C2
– C6 on the patient‘s side and aligned with C4
– C5 between, and equidistant to, C4 and C6

The electrode resistance can be checked in the recording screen - see paragraph

4.3.1.

When making an ECG with a child it is sometimes physically difficult to place all elec­trodes. When this is the case electrode C4 can be placed on the right side of the
chest.

V During the ECG recording, ensure that neither the patient nor the leading parts of

the patient connection nor the electrodes (including the neutral electrodes) come
in contact with other persons or conductive objects, even when these are
earthed.

Page 20

Art.-no.: 2.510526 Rev.: c

Resting ECG 4

AT-101 User Guide Further Lead Combinations 4.2

4.2 Further Lead Combinations

4.2.1 Nehb Leads

The Nehb leads are bipolar chest leads. They are of special interest for the diagnosis
of changes in the posterior ventricle wall. Three leads are arranged in the form of a
triangle, also called the “small cardiac triangle”. Nehb dorsal (D) is measured between
the electrode positions Nax and Nst; Nehb anterior (A) between Nap and Nst, and
Nehb inferior (J) between Nap and Nax.

Place the electrodes as follows:

Colour Code Electrode identifier Applied to position

Red C1 (Nst) 2nd rib at the right sternal border
Yellow C2 (Nax) directly opposite (on the back, posteriorly)

from 3 (Nap)

Green C3 (Nap) 5th intercostal space medioclavicular line (car-

diac apex)

All other electrodes can be placed in their normal position The user defined lead order
must be set in the Setup menu:
MENU > SETUP > ECG SETTINGS > 4 x NEXT > NEHB (D, A, J) > on

See paragraph 5.2.5 for full details.

Spinal Column

Sternum

Art.-no.: 2.510526 Rev.: c

Page 21

4Resting ECG

4.2 Further Lead Combinations

4.2.2 Electrode Positions for Additional Leads

AT-101

The clips from the chest electrodes C1 through C3 have to be removed and connec­ted to the electrodes C7 through C9 placed on the patients back in the appropriate
positions. All other electrodes can be placed in their normal position.

The user defined lead order must be set in the Setup menu:
SETUP > ECG SETTINGS > 4 x NEXT > posterior and precordials options. Set on or
off to display the additional leads.

« During data acquisition, select the lead group with the lead group keys.

See paragraph 5.2.5 for full details.

Electrode Position

Sternum

The additional leads C7 through C9 can only be recorded in manual mode.

Art.-no.: 2.510526 Rev.: c

Page 22

Resting ECG 4

AT-101 User Guide Further Lead Combinations 4.2

4.2.3 Electrodes and Neutral Electrodes Identification and Colour Code

The electrode placements shown in this handbook are labelled with the colours ac­cording to Code 1 requirements. The equivalent Code 2 colours are given below.

CODE 1 (usually European) CODE 2 (usually American)

System Electrode identifier Colour code Electrode identifier Colour code

R Red RA white

Limb L Yellow LA Green

F Green LL Red
CwhiteVBrown

C1 White/red V1 Brown/red
Chest C2 White/yellow V2 Brown/yellow
according C3 White/green V3 Brown/green
to Wilson C4 White/brown V4 Brown/blue

C5 White/black V5 Brown/orange

C6 White/violet V6 Brown/violet

I Light blue/red I Orange/red
Position E Light blue/yellow E Orange/yellow
according C Light blue/green C Orange/green
to Frank A Light blue/brown A Orange/brown

M Light blue/black M Orange/black

H Light blue/violet H Orange/violet

F Green F Green
Neutral N Black RL Green

1

Art.-no.: 2.510526 Rev.: c

Page 23

4Resting ECG

4.3 Skin/Electrode Resistance

4.3 Skin/Electrode Resistance

4.3.1 High Electrode Resistance Indication

HR:

78 / min

FILTER OFF

AT-101

If an electrode resistance is too high for a good recording, or an electrode becomes
dislodged during a recording, the electrode indication (1) flashes on the screen and an
audible beep is heard. The electrode(s) must be reapplied.

LEAD
TEST

MANUAL

PRINT

Fig. 4.1 Data acquisition screen

LEAD TEST [mV]

R -89 C1 -98 C4-72
L -102 C2 -78 C5-121

C3 -109 C6-96

RETURN

TEST

MENU

4.3.2 Electrode and Patient cable Check (Lead Test)

« To check the electrode resistance and the integrity of the cable, press the LEAD

TEST key from the data acquisition screen. (see Fig 4.1.)

HR:

78 / min

FILTER OFF

LEAD TEST

MENU

This gives electrode dc offset and is the voltage drop in the patient cable. It can indi­cate any faults in the patient cable or patient electrode. The value given is the dc volta­ge between the left leg electrode and all other electrodes. The measurements obtai­ned will indicate any cable short circuits or open circuits. The measured voltage value
will depend on where the electrodes are connected. The voltage readings that can be
expected are as follows:

• With patient connected (good connection, low resistance): ±100mV
An offset of up to ±300mV will give an acceptable recording.

• With patient simulator connected: ±20 mV
This will depend on the patient simulator used and must be taken as a flexible mea­surement.

• With all electrodes shorted together: ± 20 mV

• No patient cable connected: -350 to -500mV

Page 24

Art.-no.: 2.510526 Rev.: c

Resting ECG 4

AT-101 User Guide Modes of Operation and Procedural Overview 4.4

4.4 Modes of Operation and Procedural Overview

Prepare Patient
Connect Electrodes

Switch unit on

Press the Patient
Key and enter
data

Last Name : _
First name :
Pat. # :
Born : (dd-mm-yyy y)
Age :
Gender :
Height : cm
Weight : kg
BP : mmHg
Medications :

ECG

REST

MEMORY SETUP

General
Settings

Auto Format
Settings

see paragraph

5.2.2

View stored

In an emergency go straight
to data screen

LEAD
TEST

MANUAL

PRINT

HR:

78 / min

FILTER OFF

MENU

Patients/
Recordings
(Option)

Manual recording Auto Recording

Art.-no.: 2.510526 Rev.: c

Continous 3-lead printout
until STOP pressed

12-Lead Printout (with patient data, current date, filter
settings etc., and measurement and interpretation (if
set).Recording can be saved and/or a second copy
printed if required.

Page 25

4Resting ECG

4.4 Modes of Operation and Procedural Overview

4.4.1 Automatic Mode

Two, user defined automatic mode formats are available. The following can be pro­grammed freely for each of the 2 formats before recording:

• Lead Format

• Chart Speed

• With the optional interpretation program it is also possible to select the rhythm
lead(s), measurement table, average cycles with optional markings and interpreta­tion statements for the printout.

For further information and to define the auto formats see paragraph 5.2 ECG Set­tings.

« To start an automatic ECG recording in Auto Mode Format 1, press the START

key.

« To start the automatic ECG recording in Auto Mode Format 2, press the SHIFT

key followed by the START key.

After approximately 10 seconds the recording is analysed and the printout gives the
following:

AT-101

LEAD
TEST

• ECG recording of all leads in either Standard or Cabrera format according to sel­ection

• Sensitivity

• Heart Rate

• Speed

• Filter Settings

• Time and Date

• Interpretation statements (option)

• Average Cycles

• intervals

• Axis

• Sokolow Index (ECG index for hypertrophy)

• Detailed Measurement Table

3

The softkey options change at the end of the recording to enable you to save (1) the
recording or to obtain an extra copy (2). When a recording has been saved, it remains

HR:

78 / min

FILTER OFF

MANUAL

COPYSAVE

PRINT

MENU

stored by the AT-101 until deleted, even when the unit is switched off. Accessing re­cordings in the memory is detailed on paragraph 4.5.

Page 26

2

1

When an external printer is connected, the printout is automatically directed to the ex-

Art.-no.: 2.510526 Rev.: c

ternal printer. When the external printer is unconnected or switched off, the AT-101
automatically switches to the internal thermal printer.

A progrees bar (3) is displayed when printing to an external printer.

Resting ECG 4

AT-101 User Guide Modes of Operation and Procedural Overview 4.4

4.4.2 Manual Mode

Manual mode provides a direct printout of the real-time ECG with full control of para­meter selection.

« To start the manual recording of a real-time ECG, press the MANUAL printout soft

HR:

78 / min

key (1).

« To stop the manual recording (printout), press the STOP key (2), or the stop soft-

key.

LEAD
TEST

FILTER OFF

MANUAL

COPYSAVE

PRINT

MENU

1

The printout provides you with the following:

• Three (selected) leads with lead identification.

• On the lower edge, the chart speed, user identification and the mains filter setting
(50 or 60 Hz) and the Myogram filter cutoff frequency (if filter applied) 25Hz or
35Hz.

• At the top, the heart rate as current average of 4 beats, trace sensitivity, and the

2

time and date

The lead group, the sensitivity, and the speed of the printout are changed using the
display/printout keys (see next page).

V After heavy artefacts or lead off, the indication of the heart rate may not be relia-

ble.

Manual real-time printout is not available on an external printer because data format­ting protocol for inkjet (and laser) printers is too slow for real time processing. When
a continuous real-time printout of the ECG is required, it is always printed on the in­ternal thermal printer.

Art.-no.: 2.510526 Rev.: c

Page 27

4Resting ECG

4.4 Modes of Operation and Procedural Overview

AT-101

4.4.3 Screen (and Manual Printout) Settings

The following can be freely chosen during data acquisition, for both the display and
for a manual printout, using the top line of keys of the keypad:

Lead Group by means of the LEAD FORWARD and LEAD BACKWARD key. The following lead

groups are selectable:

Standard and Cabrera Lead Group 1-4

Lead groupType Lead group 1 Lead group 2 Lead group 3 Lead group 4

Standard I, II, III aVR, aVL, aVF V1, V2, V3 V4, V5, V6
Cabrera aVL, I, -aVR II, aVF,III V1, V2, V3 V4, V5, V6

Additional Lead Group 5-6

Two additionally lead groups can be viewed when manually set (on) in
SETUP > ECG SETTINGS > LEADS ( see page 39 for details).

Lead group type

Rhythm
Left Posterior
Right Precordial up to V5r
Right Precordial up to V 6r
Nehb

Lead group 5 Lead group 6

II, avF, III V2, V4, V5

V4, V5, V6 V7, V8, V9

V1, V2, V3 V3r, V4r, V5r

V1, V2, V3r V4r, V5r, V6r

D, A, J

Sensitivity Sensitivity Select 5, 10 or 20 mm/mV

Auto Sensitivity To reduce the possibility of overlapping traces, an auto sensitivity reduction is applied

in Auto Mode (default). This means that the unit detects very large waveform ampli­tudes and sets the sensitivity for the extremity and/or precordial leads to 5 mm/mV.
An ‘A‘ by the side of the sensitivity indicates that Auto sensitivity is set. To disable this
function, the AUTO SENSITIVITY key (key 3) must be pressed.

HR:

78 / min

FILTER OFF

LEAD
TEST

Page 28

MANUAL

COPYSAVE

PRINT

MENU

Art.-no.: 2.510526 Rev.: c

Resting ECG 4

AT-101 User Guide Modes of Operation and Procedural Overview 4.4

Chart Speed Select speed 5, 10, 25 or 50mm/s

Key 7 is a toggle key - press once and 5 is selected, press a second time and 10mm/
s is selected.

When the 25 or 50mm/s key is pressed, the same speed is set on both the screen and
the (manual) printout. When 5 or 10 mm/s is selected, this affects the manual printout
speed only.

Myogram Filter Switch the filter ON or OFF with the FILTER key:

‘FILTER ON‘is displayed on the LCD when the filter is switched on and the cutoff fre­quency is shown at the bottom of the printout. That is 0.05 - 25 Hz, or 0.05 - 35 Hz.
The cutoff frequency is defined on page 37.

Recentering Press the 1mV key to re-centre the ECG traces and/or displaying a 1mV pulse on

screen and printout.

QRS Beep To activate / Deactivate the QRS beep, press the QRS key

Art.-no.: 2.510526 Rev.: c

Page 29

4Resting ECG

4.5 Memory (option)

Last Name : _
First name :
Pat. # :
Born : (dd-mm-yyyy)
Age :
Gender :
Height : cm
Weight : kg
BP : mmHg
Medications :

AT-101

4.5 Memory (option)

The memory option allows approximately 40 recordings (depending on size and pa­rameters specified when the recording was taken) to be stored, edited, printed, and
transmitted over the RS-232 interface. When no more recordings can be stored, the
message ‘Memory Full‘ is displayed. Old recordings must be deleted before further
recordings can be stored

Recordings can be automatically saved after a recording has been made (auto save),
or you are prompted to save a recording individually after a recording has been made.
This setting is defined in the ECG settings (see page 39).

1. Enter the memory from the initial screen.
All recordings are stored in date order.

ECG

REST

Date Patient Pat-NoECG

Date Patient Pat-NoECG

MEMORY SETUP

SELECT MENUENTER

2. Highlight required recording by pressing the up/down softkeys.

To highlight all recordings press the function key .

3. When the required recording is highlighted, press the SELECT softkey.

4. Softkey options then enables you to obtain a:

• printout (PRINT)

• deleting the selected recording (DELETE)

• sending the content of the memory over the RS-232 interface to SEMA

(TRANSMIT)

When Delete is selected, the message ‘ERASING‘ appears in the message box,
during the erasing process.

PRINT BACKDELETETRANSMIT

Page 30

Art.-no.: 2.510526 Rev.: c

The print settings are defined in Setup and are described in paragraph 4.4.3 and

5.2.2.

Resting ECG 4

AT-101 User Guide Memory (option) 4.5

4.5.1 Transmitting the Recordings

V When non-medical devices are connected to the interface ensure that both units

are securely connected to the same earth potential.

V When operating the unit on battery and simultaneously using non-medical de-

vices, the interface must be fully isolated.

V An external device must only be connected using the original interface cable as-

sembly.

The contents of the memory can be transmitted to the SEMA-200 data management
program (or similar), using the:

• RS-232 connected directly to the computer

• over the telephone system with an external modem

• over the telephone system with SCM

• over network (Ethernet) with SCM.

When Transmit is selected, the message ‘TRANSMITTING‘ appears in the message
box, during the transmission.

Line Transmission To transmit recordings over line, proceed as follows:

1. Set Communication mode to LINE - see page 42

2. Connect the cable assembly (optional accessory, art. No. 2.310159) between the
RS-232 connector on the AT-101 plus and the COM interface of the Computer.

3. Ensure that the SEMA communication program (SEMACOMM) is active on the
computer (see SEMA handbook).

4. Press the TRANSMIT softkey.

Modem Transmission To transmit recordings over the telephone network, proceed as follows:

1. Set Communication mode to MODEM - see page 42

2. Enter Phone number and modem initialisation codes - see page 42

3. Connect the modem cable assembly (supplied with modem) between the RS-232
connector on the AT-101 and the modem.

4. Ensure that the SEMA communication program (SEMACOMM) is active on the
remote computer (see SEMA handbook).

5. Press the TRANSMIT softkey

The message TRANSMITTING appears while the unit is sending

he message TRANSMITTING appears while the unit is sending

If a transmission error occurs the message Tx ERROR is displayed.

« Check all settings in the SEMACOMM program

– baud rate
– parity - none
–stop bit - 2

Art.-no.: 2.510526 Rev.: c

– time between blocks, records - 100ms

« Check that the transmission speed is the same in both the AT-101 and the SE-

MACOMM program.

Page 31

4Resting ECG

4.5 Memory (option)

AT-101

Network/Modem Transmission
with SCM

To transmit recordings over the network or telephone, proceed as follows:

1. Set Data output to Comm modul - see page 43

2. Set Communication mode to Net or MODEM - see page 43

3. Enter initialisation codes - see page 43

4. Connect the AT-101 to the your network with the RJ45 or telephone line with the
RJ11.

5. Press the TRANSMIT softkey

The transmission settings are defined in Setup and are described in paragraph 5.3.2
and 5.3.3

Page 32

Art.-no.: 2.510526 Rev.: c

Setup 5

AT-101 User Guide Entering the SETUP Menu 5.1

5 Setup

5.1 Entering the SETUP Menu

To enter the setup screen press the following keys.

MENU

1. Press the softkey MENU.

ECG

REST

1

2. Press the function key FN and the softkey SETUP.

SETUPMEMORY

SETUP

Note:

The Setup text above the key appears first if the FN key is pressed.

5.1.1 Navigating in the Setup Screens

In setup screens where there are two choices, navigation to the next screen and sel­ection of specific settings. This is as follows

Navigation with Softkeys

1. Select desired parameters with the Softkeys UP/DOWN (1).

NEXTSELECT EXIT

1

2

3

2. Changes setting with the softkey SELECT (2) and UP/DOWN (1).

3. Confirm the setting with the softkey SELECT (2).

4. Go to the next screen with the softkey NEXT (3)

Navigation with Keypad buttons

1. Select desired parameters with the arrows keys UP/DOWN (1).

NEXTSELECT EXIT

1

2

Art.-no.: 2.510526 Rev.: c

2

1

3

2. Changes setting with the ENTER key (3) and the arrows keys UP/DOWN (1).

3. Confirm the setting with the ENTER key (3).

4. Go to the next/previous screen with the arrows keys LEFT/RIGHT (2).

Page 33

5 Setup

5.2 ECG Settings

AT-101

5.2 ECG Settings

1. Press the softkey MENU.

MENU

ECG

REST

SETUP

ECG

SETTINGS

AUTOMATIC FORMAT 1

ECG Printout : short at 25 mm/S
Averages Cycles : 2*6, 50bmm/s + 2 Rythm
Rhythm lead 1 : V1
Rhythm lead 2 : V1
Measurements : Off
Markings : On
Interpretation : On

SYSTEM
SETINGS

SETUPMEMORY

MENU

2. Press the function key FN and the softkey SETUP.

Note:

The Setup text above the key appears first if the FN key is pressed.

3. Press the softkey ECG SETTINGS.

The following pages detail the programmable ECG parameters:

« Use the SELECT softkey (1) to select the different settings.
« Use the UP/DOWN softkeys (2) to highlight the various options.

2

2

NEXT

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

external

Automatic Format 1

internal

ECG Settings

ECG Settings

SELECT

1

Interpretation

Filter

NEXT

General

Lead

EXIT

« Use the NEXT softkey to go to the next menus

• Automatic Format 1 and 2 internal

• Automatic Format 1 and 2 external

• Filter

• Interpretation

• Lead

• General

Art.-no.: 2.510526 Rev.: c

In units where the interpretation option is not installed, interpretation statements,
cannot be displayed.

Page 34

Setup 5

AT-101 User Guide ECG Settings 5.2

5.2.1 Automatic Format 1 and 2 Internal Printer

Two separate Auto formats can be defined for the internal printer.

NEXT

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

external

Automatic Format 1

internal

General

Lead

Interpretation

Filter

ECG Settings

ECG Settings

Press the SELECT softkey to choose from the following options:

Parameter Options Description

ECG Printout

No Printout No printout of the ECG given at the end of an auto mode recording (the

recording can be stored in the memory and printed at a later time if requi-

red).
Short at 25 mm/s Leads are printed in short form (1 sheet) at 25 mm/s.
Short at 50 mm/s Leads are printed in short form (1 sheet) at 50 mm/s.
Long at 25 mm/s Leads are printed in long form (2 sheets) at 25 mm/s.
Long at 50 mm/s Leads are printed in long form (2 sheets) at 50 mm/s.

Average Cycles

No Printout No printout of the ECG given at the end of an auto mode recording (the

recording can be stored in the memory and printed at a later time if requi-

red).
4*3, 25 mm/s Leads are printed in a 4 * 3 format at 25 mm/s
4*3, 50 mm/s Leads are printed in a 4 * 3 format at 50 mm/s
2*6, 50 mm/s + 1 Rhythm Leads are averaged over the entire 10 second recording and printed in 2

groups of 6 at 50mm/s, with the one rhythm lead at the bottom of the page.
1*12, 50mm/s + 2 Rhythm Leads are printed in a 1 * 12 format at 50 mm/s - with 2 rhythm leads

printed.

Rhythm Lead 1

Rhythm Lead 2

Measurements

Markings

I, II, III, aVR, aVL, aVF, V1 to V6 Select any lead.
I, II, III, aVR, aVL, aVF, V1 to V6 Select any lead.
On/Off Select on or off to print a detailed table of measurement results.
On/Off

Select on or off to print reference markings on the ECG average cycle
print. A vertical marker shows the beginning and end of P wave and QRS,
and the end of the T wave

Interpretation

On /Off Select on or off to print interpretation statement

The sensitivity of the interpretation and the printing/not printing of abnormality state­ments can additionally be set for the interpretation. These are described in paragraph

5.2.4.

Art.-no.: 2.510526 Rev.: c

Page 35

5 Setup

5.2 ECG Settings

AT-101

5.2.2 Automatic Format 1 and 2 External Printer

Two separate Auto formats can be defined for a external printer.

NEXT

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

Automatic Format 1

external

internal

ECG Settings

Parameter Options Description

ECG Printout

General

Lead

Interpretation

Filter

Press the SELECT softkey to choose from the following options:

No Printout No printout of the ECG given at the end of an auto mode recording (the

recording can be stored in the memory and printed at a later time if requi­red).

4*3 + 1 Rhythm Leads are printed in a 4 * 3 format at 25mm/s, with the selected rhythm

lead at the bottom of the page at 25mm/s.
1*12 at 25 mm/s Leads are printed in a 1 * 12 format at 25mm/s - no rhythm lead printed.
8*5 s + 4*10 s The first 8 leads printed for 5 seconds and the last 4 leads printed for 10

seconds.
Short at 25 mm/s Leads are printed in short form (1 sheet) at 25 mm/s.
Short at 50 mm/s Leads are printed in short form (1 sheet) at 50 mm/s.
Long at 25 mm/s Leads are printed in long form (2 sheets) at 25 mm/s.
Long at 50 mm/s Leads are printed in long form (2 sheets) at 50 mm/s.

Average Cycles

No Printout No printout of average cycles
4*3, 25mm/s + 2 Rhythm Leads are averaged over the entire 10 second recording and printed in 4

groups of 3 leads at 25mm/s, with the two selected rhythm leads at the

bottom of the page at 25mm/s.
4*3, 50mm/s + 2 Rhythm Leads are averaged over the entire 10 second recording and printed in 4

groups of 3 at 50mm/s, with the two selected rhythm leads at the bottom

of the page at 25mm/s.
2*6, 50mm/s + 2 Rhythm Leads are averaged over the entire 10 second recording and printed in 2

groups of 6 at 50mm/s, with the two selected rhythm leads at the bottom

of the page at 25mm/s.

Rhythm Lead 1

Rhythm Lead 2

Measurements

Markings

I, II, III, aVR, aVL, aVF, V1 to V6 Select any lead.
I, II, III, aVR, aVL, aVF, V1 to V6 Select any lead.
On/Off Select on or off to print a detailed table of measurement results
On/Off Select on or off to print reference markings on the ECG average cycle

print. A vertical marker shows the beginning and end of P wave and QRS,

and the end of the T wave

Interpretation

On /Off Select on or off to print interpretation statement

Page 36

Art.-no.: 2.510526 Rev.: c

The sensitivity of the interpretation and the printing/not printing of abnormality state­ments can additionally be set for the interpretation. These are described in paragraph

5.2.4.

Full details of the interpretation option are given in the SCHILLER ECG Measurement
and Interpretation booklet (art. No. 2.510179).

Setup 5

AT-101 User Guide ECG Settings 5.2

5.2.3 Filters

There are five different filters which can be set individually as follows.

NEXT

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

Automatic Format 1

external

internal

General

Lead

Interpretation

Filter

ECG Settings

Parameter Options Description

Baseline filter

0.05, 0.15 or 0.3 Hz The set value is the lower limit of the frequency range and is normally set
to 0.05 Hz. The settings 0.15 and 0.30 Hz should only be used when ab­solutely necessary, as the possibility exists that they could affect the ori­ginal ECG signal, especially the ST segments.

Myogram filter

25 or 35 Hz

The Myogram filter suppresses disturbances caused by strong muscle tre­mor. The filter is applied by pressing the FILTER key (or programmed on
as default when the unit is switched on).

When the Myogram filter is on, ‘FILTER ON‘ is displayed in the information
box.

The cutoff frequency is user defined at 25Hz or 35Hz. When ‘off at power
up‘ is selected, the Myogram filter is off when the unit is first switched on.

Myogram filter

Mains filter

Baseline Stabiliser
(SCHILLER SBS)

Smoothing Filter
(SCHILLER SSF)

Art.-no.: 2.510526 Rev.: c

Note

An ECG recorded in auto mode is stored unfiltered. It is therefore possible
to print the stored ECG either with or without passing the myogram filter.
Filter ON is indicated on the LCD.

On at power up
Off at power up
Off
50 Hz
60 Hz

Off/On The baseline stabiliser greatly reduces the baseline fluctuations without

Off/On

Selection if filter is standard switched on or off during power up.

The mains filter is an adaptive digital interference filter designed to sup­press ac interference without attenuating or distorting the ECG.

Set the mains filter in accordance with the frequency of your local mains
supply.

affecting the ECG signal. The purpose of the stabiliser is to keep the ECG
signals on the baseline of the printout. This filter is only effective in auto
mode printout. The Baseline Stabiliser is applied to a recording (on), or not
applied to a recording (off).

The smoothing filter (SSF: SCHILLER smoothing filter) is a low pass filter
to suppress high frequency artefacts between the QRS complexes. When
this filter is switched on, ‘SSF‘ is shown on the bottom line of the automatic
printout.

Page 37

5 Setup

5.2 ECG Settings

5.2.4 Interpretation (Only with version C)

The interpretation settings enable the user to determine whether or not certain com-

NEXT

Interpretation (option)

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

external

Automatic Format 1

internal

Filter

General

Lead

ECG Settings

ECG Settings

Parameter Options Description

Sensitivity

Age Assumed to be

High or low Selecting sensitivity
<= 30 yrs
> 30 yrs

Abnormal ECG

Unconfirmed Report

Thrombolysis

Print/Not Print Normal‘ / ‘Abnormal‘ is printed or not printed
Print/Not Print Unconfirmed Report‘ is printed or not printed
On/Off (Only with option Ct Software)

ments will be added to the interpretation statements on the ECG printout. Furthermo­re, the patient’s age can be assumed (<30 or >30). Low or high can also be set for
interpretation sensitivity. Low sensitivity will suppress certain non-specific ECG dia­gnoses; this may be advisable when carrying out ECGs for screening.

Greater than 30 years, or 30 years and under

Note

The ‘Patient age assumed to be..‘ setting is only applicable
when patient data has not been entered. When a patient‘s
date of birth has been entered, this setting is ignored.

AT-101

Page 38

Art.-no.: 2.510526 Rev.: c

AT-101 User Guide ECG Settings 5.2

5.2.5 Leads

Defining Lead Sequence & Printout

NEXT

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

external

Automatic Format 1

internal

General

Lead

Interpretation

Filter

ECG Settings

ECG Settings

Parameter Options Description

Lead Sequence

Signals

Standard or Cabrera Select between Standard lead sequence or Cabrera.

Simultaneous

Sequential

Auto-Centering

On
Off

a

Rhythm Lead Group

a

Left Posterior (V4-V9)

a

Right Precordials (V5r)

a

Right Precordials (V6r)

a

Nehb (D, A, J)

On/Off Lead group 5: II, avF, III Lead group 6: V2, V4, V5

On/Off Lead group 5: V4, V5, V6 Lead group 6: V7, V8, V9

On/Off Lead group 5: V1, V2, V3 Lead group 6: V3r, V4r, V5r

On/Off Lead group 5: V1, V2, V3r Lead group 7: V4r, V5r, V6r

On/Off Lead group 5: D, A, J, (only three leads)

The required settings can be selected as follows:

Lead groupings are shown on page 28.

All ECG leads are printed in the same time segment
(in automatic mode only)

Each group is a contiguous time segment of approximately 2.5 or 5 seconds (in
automatic mode only).

All ECG traces are centred dynamically for optimal use of paper width.
Off ECG traces are set to a fixed baseline position and may possibly overlap

The lead group settings allow two extra leads to be displayed on the screen when set
to ‘On‘. The following lead groups can be displayed:

Setup 5

a.The above leads can also be printed when displayed (only in manual mode). The lead groups are changed both on the screen
and on the manual printout with the lead next/previous keys.

5.2.6 General (only with version m = Memory)

Parameter Options Description

NEXT

Auto. Format 2 external

Auto. Format 1 external

Auto Format 2 internal

external

Automatic Format 1

internal

Art.-no.: 2.510526 Rev.: c

ECG Settings

ECG Settings

General

Lead

Interpretation

Filter

Auto-Storage

Off/Manual/
Automatic

When “Automatic”, recordings are automati­cally saved when an ECG is completed. When
manual is selected, the user is prompted to sa­ve an ECG recording when completed.

Page 39

5 Setup

5.3 System Settings

AT-101

5.3 System Settings

The SYSTEM SETTINGS are entered by selecting MENU SETUP and SYSTEM
SETTINGS from the initial screen:

1. Press the softkey MENU

MENU

ECG

REST

SETUP

ECG

SETTINGS

UNIT

User ID : User
Date : 01-10-03 (dd-mm-yy)
Time : 13:01
Language : English
Startup : Patient Data
Paper : A4

TEST

AND INFO

SYSTEM

SETINGS

SETUPMEMORY

MENU

EXITCOMMUNIT

2. Press the function key FN and the softkey SETUP.

Note:

The Setup text above the key appears first if the FN key is pressed.

3. Press the softkey SYSTEM SETTINGS.

4. Press the softkey UNIT.

The following pages detail system settings for the AT-101:

« Use the SELECT softkey (1) to select the different settings
« Use the UP/DOWN softkeys (2) to highlight the various options.

Page 40

SELECT EXIT

122

Art.-no.: 2.510526 Rev.: c

AT-101 User Guide System Settings 5.3

5.3.1 Unit

« Press softkey UNIT

TEST

AND INFO

Parameter Options Description

User Identification (User ID)

Date

Time

Language

Start-up Screen

Paper

EXITCOMMUNIT

Enter user ID The user identification is printed on all recordings. The user ID can be the

department, doctor or hospital etc. Select User ID and a blinking cursor is
present - enter up to 30 characters via the keypad.

Note

If the unit is reset to the default settings (see following), the user identifi­cation must be re-entered.

dd-mm-yy

hrhr/minmin

Deutsch
English (Default)
Francais
Svensk
American
Italiano
Espanol
Portuges
Dutch
Patient Data
Resting ECG

A4
Letter

Enter the date in the format day.month.year. When set, the ENTER key
must be pressed to confirm.

Enter the time using the standard 24 hr notation. When set, the ENTER
key must be pressed to confirm.

Several languages are already programmed into the unit. Select the lan­guage for the screen display and for the printout. The language will also
set the units used by the system.

The difference between American and English is as follows:

American Standard English

measurements in inches measurements in centimetres
temperature in Fahrenheit temperature in degrees centigrade.
Mains filter setting - 60Hz mains filter setting - 50Hz
date order mm-dd-yy date order dd-mm-yy

Here you can specify the first screen to be displayed when the unit is swit­ched on. Select between patient data screen (for entry of new patient) or
data acquisition screen (ECG).

The external printer can print on A4 or letter size paper. Set according to
the paper used.

Setup 5

Art.-no.: 2.510526 Rev.: c

Page 41

5 Setup

5.3 System Settings

5.3.2 Communication

« Press softkey COMM

TEST

AND INFO

Parameter Options Description

Baudrate

Mode

Phone No.

Modem Init.

EXITCOMMUNIT

9600
14400
19200
28800
38400
57600
115200
Line
Modem
T, 0417608787
P, 0417608787

ATB0L1V0Q0E0S0=0

Select a Baud rate according to the modem/computer used. Most compu­ters can connect at 115200 Baud and the standard modem speed is 57600
Baud. If problems are experienced during transmission reduce the Baud
rate.

• line (computer connected directly to the RS-232 interface)

• modem (for transmission over the phone network)

Enter the telephone number preceded by ‘T‘ or ‘P‘ (tone or pulse).
A comma ‘,‘ gives a one second pause in dialling - this may be necessary
for example, if an outside line is required.

Enter the modem initialisation codes. Full details will be found in the user
guide for your modem. However, the modem initialisation must contain at
the minimum, the following commands with the prefix ‘AT‘.

AT-101

• ‘Q0‘- modem sends response

• ‘V0‘- numerical response codes

• ‘VE0‘- no command echo
The standard modem initialisation code is: ATB0L1V0Q0E0S0=0

If in doubt about any of these settings, please contact your phone company and/or
modem supplier.

Art.-no.: 2.510526 Rev.: c

Page 42

AT-101 User Guide System Settings 5.3

5.3.3 Communication with SCM

The SCHILLER Communication Module (SCM) option enables the device to transmit
data via modem or network to a server.

Parameter Options Description

Data Output

Mode

IP address

Net mask

Gateway

Server

Page

User Name

Password

Com-Type

RS-232
Com Module

Net
Modem

Net Setup

0.0.0.0.

255.255.255.0

255.255.255.0

255.255.255.0:80
page
username
password

--­SSH+ZIP
ZIP
SSH

• Data transmittion via RS-232 port. (see detailed setting chapter 5.3.2)

• Selection the Schiller communication Module (see below the detailed
settings)

• Data transmission over a network e.g. Ethernet

• modem for transmission over the phone network (optional)

Identifier address of the device in the TCP/IP network. If set 0.0.0.0 the IP
address will be set by the DHCP server.

Network IP address
Gateway IP address
Server IP address
Storage address at the Server
User name entry (Server)
Password entry (Server)

No enryption and data compression selected
Encryption and data compression
Only data compression
Only encryption

Setup 5

☎ Phone No.

☎ User Name

☎ Password

Server

Page

User Name

Password

Country Id

Com-Type

Art.-no.: 2.510526 Rev.: c

Modem

0041417664242
d-username
d-password

255.255.255.0:80
page
username
password
63 Country specific modem setting code (see service manual)

--­SSH+ZIP
ZIP
SSH

Entering telefon number
User name entry (modem dial up)
Password entry (modem dial up)
Server IP address
Storage address at the Server
User name entry (Server)
Password entry (Server)

No enryption and data compression selected
Encryption and data compression
Only data compression
Only encryption

Page 43

5 Setup

5.3 System Settings

TEST

AND INFO

AT-101

5.3.4 Test and Information

« Press softkey TEST AND INFO to display following screen:

EXITCOMMUNIT

A code of the options installed is given after the software version. These are as fol­lows:

V1.0 Ctm RI5.73

070.1234567 26.09.2003

Copyright © 2002-03
SCHILLER AG, Switzerland

PRINT

COMM

SETUP

TEST

AT-101

SOFTWARE

BASE

INIT.

EXIT

Basic configuration

M = Measurement
C = Measurement and Interpretation

Optional configuration
m = Memory
t = Thrombolysis

Page 44

Art.-no.: 2.510526 Rev.: c

AT-101 User Guide System Settings 5.3

5.3.4.1 Print Setup

« To obtain a printout press the PRINT SETUP softkey.

PRINT

SETUP

COMM

TEST

SOFTWARE

BASE

INIT.

EXIT

A printout of the defined settings will be produced and gives the following information,
depending on the installed software:

Printout for Internal and external

Print Setup Menu Parameter Settings

ECG Format (1 and 2)

Internal & external

Leads

Filter

Interpretation

(only with option Interpre­tation)

Comm

Speed Default speed setting

Auto printout Long (ooo), Short (o) or Suppressed (-)

MECG Average cycles as defined in auto ECG recording setup

(e.g. 4 * 3 (25 mm/s) + 2)

Rhythm leads Leads selected for R1, R2 resp.

Measurements Print - Enabled (+) or Suppressed (-)

Marks Print - Enabled (+) or Suppressed (-)

Interpretation Print - Enabled (+) or Suppressed (-)

Sequence Standard (S) or Cabrera (C)

Signals Printout of signals - Sequential or Simultaneous

Auto Centering Enabled (+) or Suppressed (-)

Lead Group Rhythm, V9, V4r, V6r, DAJ, ON (+) or OFF (-) for each lead group

Baseline Filter 0.05, 0.15 or 0.30 Hz

Myogram Filter 25 or 35 Hz,

Myogram Filter ON (+) or OFF (-) at power up

Mains Filter 50, 60 Hz or OFF (-)

SSB Filter Smoothing Filter Enabled (+) or Suppressed (-)

Sensitivity Low (-) or high (+) sensitivity

A30 Patient age is assumed to be < 30 (-) or >30 (+)

U 'Unconfirmed report' is written (+) or suppressed (-)

Abnormal Normal / Abnormal printed Enabled (+) or Suppressed (-)

Thrombolysis ON (+) or OFF (-)

Baud rate 115200, 57600, 38400, 28800, 14400 or 9600. This is followed by parity set-

ting (Y/N), bits and number of stop bits.

Mode Line or Modem

Setup 5

Art.-no.: 2.510526 Rev.: c

Page 45

5 Setup

5.3 System Settings

PRINT

COMM

TEST

COMM

TEST

SOFTWARE

SOFTWARE

SETUP

PRINT

SETUP

5.3.4.2 Communications Test

When this is selected, test options are given for the RS-232 communication port. Use

BASE

INIT.

EXIT

this test if the RS-232 port is suspected of malfunction. A special test plug is used to
carry out the UART test.

5.3.4.3 Installing New Software Options (Upgrade)

Use the upgrade option to install any available software options (e.g. Measurement).
To install new options in the AT-101, a code must be entered. This code must be ob-

tained from SCHILLER. To install software option proceed as follows:

1. Enter the TEST and INFO screen

BASE

INIT.

EXIT

SETUP > SYSTEM SETTINGS >TEST AND INFO

2. Select SOFTWARE.

AT-101

UPGRADE

UPGRADE

UPDATE

UPDATE

3. Select UPGRADE.

EXIT

4. Enter the upgrade code.
When the correct code is entered, acceptance of the code is indicated by a series
of beeps. The option can be used immediately.

V More than 10 attempts to enter the incorrect code blocks the unit

5.3.4.4 Update the Software

« Use the Update option to update the current software.

EXIT

Details to update the software is given in the AT-101 Service Handbook.

Page 46

Art.-no.: 2.510526 Rev.: c

Setup 5

AT-101 User Guide System Settings 5.3

5.3.4.5 Default Settings

To reset the unit to the base default settings, press the BASE INIT softkey. As the unit

PRINT

SETUP

COMM

TEST

SOFTWARE

BASE

INIT.

EXIT

resets to the default values a message is briefly displayed on the LCD. The base set­tings (Defaults) are given on the following page.

Unit Defaults Table

Settings Standard With Interpretation

Language

Auto Format 1

Internal

Auto Format 2

external

Filter

Interpretation
Settings

Leads

General

Art.-no.: 2.510526 Rev.: c

Memory and
Communication

As set As set
ECG: 25mm/s, short (o) ECG: 25mm/s, short (o)
Rhythm Leads V1 Rhythm Leads V1, II

MECG: 2*6 (50mm/s + 1)
Measurements: Suppressed (-)
Marks: Enabled (+)

Interpretation: Enabled (+)
ECG: 25mm/s, Long (ooo) ECG: 25mm/s, long (ooo)
Rhythm Leads V1 Rhythm Leads V1, II

MECG: none

Measurements: Suppressed (-)

Marks: Enabled (+)

Interpretation: Enabled (+)
Baseline 0.05Hz Baseline 0.05Hz
Myogram 35Hz Myogram 35Hz
Myogram 35Hz, off at power up Myogram 35Hz, off at power up
Mains Filter 50Hz (60Hz) Mains Filter 50Hz (60Hz)
SBS OFF (-) SBS OFF (-)
SSF OFF (-) SSF OFF (-)

Sensitivity low (-)

Age: <= 30 (-)

Abnormal ECG Not Print

Unconf. Report Print (+)

Thrombolysis OFF (-)
Sequence Standard (S) Sequence Standard (S)
Signals Sequential Signals Sequential
Autom. Centering ON (+) Autom. Centering ON (+)
Rhythm On (+) Rhythm On (+)
V4-9 On (+) V4-9 On (+)
V5r Off (-) V5r Off (-)
V6r Off (-) V6r Off (-)
Nehb DAJ Off (-) Nehb DAJ Off (-)
Storage mode manual Storage mode manual

Baud rate 57600 bps Baud rate 57600 bps

Trans. mode: line Trans. mode: line

Page 47

6 Care & Maintenance

6.1 Service interval

6 Care & Maintenance

6.1 Service interval

The device must be serviced in regular intervals. The test results must be documen­ted and be compared with the values in the accompanying documents.

Maintenance work not described in this chapter, e.g. battery changes, may only be
accomplished by a qualified technician authorised by SCHILLER AG.

The following table gives information about interval and competence of maintenance
which can be required.

Interval Service Responsible

• Keybord test

Every 6 months

Every 12 months

Every 24 months

• LED test (see page 15)

• Visual inspection of the unit and cables

• Every servicing of the six month interval

• Functional tests according to the Service Handbook.

• Electrical safety tests according to EN 60601-1, Clause 18 and 19

• Every servicing of the 6- and 12 months interval.

• Every measuring test and calibrations according to the service hand­book.

« User

« By SCHILLER AG auhorised

technician

« By SCHILLER AG auhorised

technician

AT-101

Self-test

Every time the unit is switched on a built-in test program is initiated. If an error is de­tected, the unit will not switch on and a table may be displayed giving information for
the service staff.

Keybord test

Press all button of the keyboard. The right function is indicated by a beep and/or the
executed function.

6.2 Communication (RS-232) Test

A built-in program to check the transmission connector. This test is entered from the
‘setup‘ menu:

SETUP > SYSTEM SETTINGS > TEST AND INFO > COMM TEST

This test uses a special test plug (not supplied) which shorts the incoming/outgoing
connectors to check transmission line and connector to ensure that the AT-101 trans­mission circuits are functioning. Details of this test are given in the AT-101 Service
Handbook.

Art.-no.: 2.510526 Rev.: c

Page 48

Care & Maintenance 6

AT-101 User Guide Maintenance interval for the battery 6.3

6.3 Maintenance interval for the battery

Important

The battery is maintenance free during its normal life.
The battery should remain charged during storage. If the storage period exceeds

three months, recharge the battery.

• during normal operation no maintenance necessary.

• If not used every 3 months.

• replace the battery approx. every 4 years (depending upon application) if the actual
running time falls substantially under 1 hour.

6.3.1 Charging the battery

Important

A totally discharged battery requires approx. 7 hours to be 90% recharged.
It is possible to use the unit when the battery is being charged. However, when this is
the case, the charging time of the battery will be substantially extended!

1. Connect the device to the mains but do not switch it on.

2. The LED for mains supply (1) is lit.

3. Charge the battery for at least 7 hours.

1

6.3.2 Battery disposal

V Danger of explosion! Battery may not be burned or disposed of domestic

refuse.

V Danger of acid burns! Do not open the battery.

The battery is to be disposed of in municipally approved areas or sent back
to SCHILLER AG.

Art.-no.: 2.510526 Rev.: c

Page 49

6 Care & Maintenance

6.4 Changing the fuse and mains voltage

6.4 Changing the fuse and mains voltage

V The mains voltage may only be changed by qualified personnel.
V Before the fuse and mains voltage are changed, the device must be disconnected

V The fuse may only be replaced by the indicated fuse type of the table below.

Table fuse types

Voltage range Numbers Fuse type

220 - 240 VAC 2 250 V / 200 mA (T = slow blow)
100 - 115 VAC 2 115 V / 315 mA (T = slow blow)

Changing the fuse

1. Disconnect the device from the mains and remove the mains plug. See paragraph

2. Loosen the fuse inset using a screwdriver and remove it.

3. Replace existing fuses with the same type. See table above.

4. Reinsert the fuse inset.

Changing the mains voltage

1. Disconnect the device from the mains and remove the mains plug.

2. Loosen the fuse using a screwdriver and remove it.

3. Remove the grey inset, turn it by 180° and reinsert it.

4. Check the voltage indication in the window.

5. Replace both fuses. See See table above.

6. Reinsert the fuse assembly.

AT-101

from the mains and remove the mains plug. See paragraph 3.1.4.

3.1.4.

See paragraph 3.1.4.

Fig. 6.1 Fuse inset

Page 50

Art.-no.: 2.510526 Rev.: c

Care & Maintenance 6

AT-101 User Guide Cleaning 6.5

6.5 Cleaning

6.5.1 Cleaning the Casing

V Switch the unit off before cleaning and disconnect the mains. Do not, under any

circumstances, immerse the apparatus into a cleaning liquid or sterilise with hot
water, steam, or air.

The casing of the AT-101 can be cleaned with a soft damp cloth on the surface only.
Where necessary a domestic non-caustic cleaner can be used for grease and finger
marks.

6.5.2 Cleaning the Patient Cable

The patient cable must not be exposed to excessive mechanical stress. Whenever
disconnecting the leads, hold the plugs and not the cables. Store the leads in such a
way as to prevent anyone stumbling over them or any damage being caused by the
wheels of instrument trolleys.

The cable can be wiped with soapy water. Sterilization, if required, should be done
with gas only and not with steam. To disinfect, wipe the cable with hospital standard
disinfectant.

6.5.3 Cleaning the Thermal Print Head

If the printer is used a lot, a residue of ink from the grid on the paper can build up on
the print head. This can cause the print quality to deteriorate. We recommend there­fore that every month the print head is cleaned with alcohol as follows:

Extend the paper tray and remove paper. The thermal printhead is found under the
paper tray.

With a tissue dampened in alcohol, gently rub the printhead to remove the ink residue.
If the printhead is badly soiled, the colour of the paper grid ink (i.e. red or green) will
show on the tissue.

Art.-no.: 2.510526 Rev.: c

Page 51

6 Care & Maintenance

6.6 Replacing the Recording Paper

6.6 Replacing the Recording Paper

1

AT-101

The recording paper must be replaced as soon as the end of the paper is indicated
by a red stripe on the lower edge. After the indication first appears, there are about 8
pages left. However, we recommend that the paper be replaced immediately. If no pa­per is left, the printing process is interrupted and a warning is given on the screen. To
replace the paper proceed as follows:

1. Press the locking catch (1) to the right. Open the printer door opens upward.

2. Remove any remaining paper from the paper tray.

3. Place the beginning of the paper over the black paper roller.

4. Close the cover. Be sure that the paper lies exactly between the rails.

5. Press the STOP key to transport the paper to the start position.

Page 52

SCHILLER can only guarantee perfect printouts when SCHILLER original chart paper
or chart paper of the same quality is used.

6.6.1 Thermal Paper Handling

The thermal paper used in the AT-101 requires slightly different handling to normal
paper as it can react with chemicals and to heat. However, when the following points
are remembered, the paper will give reliable results:

The following points apply to both storage, and when archiving the results.

1. Before use, keep the paper in its original cardboard cover. Do not remove the
cardboard cover until the paper is to be used.

2. Store in a cool, dark and dry area.

3. Do not store near chemicals e.g. sterilisation liquids.

4. In particular do not store in a plastic cover.

5. Certain glues can react with the paper - do not attach the printout onto a mounting
sheet with glue.

Art.-no.: 2.510526 Rev.: c

AT-101 User Guide Fault-Finding 6.7

6.7 Fault-Finding

Error Cause Remedy

Unit does not switch on,
Blank Screen

QRS traces overlap •Wrong settings

‘Noisy’ traces • Bad electrode

No printout obtained after an
auto mode recording

Printout fades or is not clear

No printout of interpretation
statement or measurements

Art.-no.: 2.510526 Rev.: c

No key response,
LCD locked

• No mains supply, Green mains in­dicator off

• Contrast wrong adjusted

• Mains supply ok, but the screen is
still not lit

• Bad electrode

• Patient not relaxed

•Wrong setting

• No paper

•Wrong settings

• Old paper inserted

• Wrong inserted paper

• Dirthy print head

•Wrong setting « Check that the interpretation and measurement options

• Software hang up « Switch off, and switch on again after a few seconds. If the

Care & Maintenance 6

« Check mains supply

« Check contrast. Press the function key (FN) and then the

UP/DOWN cursors keys to change the contrast.

« Press the OFF key.

Wait a few seconds and switch on again.

« If the screen is still not lit: Call your local SCHILLER re-

presentative.

« Change sensitivity setting
« Ensure that the automatic sensitivity reduction is not

switched off.

« Reset signals to baseline - press the 1mV key
« Check electrode contact - Replace electrodes
« If traces still overlap: Call your local SCHILLER repre-

sentative.

Note: Some patients have very high amplitudes and even on
the lowest sensitivity settings, the QRS traces can overlap.

« Check electrode contact
« Reapply electrodes
« Ensure that the patient is relaxed and warm
« Check all filter settings.
« Activate Myogram filter - change cutoff frequency
« Ensure mains filter is correct for mains supply
« If the trace is still ‘noisy‘: Call your local SCHILLER re-

presentative.

« Ensure that paper is loaded.
« Check Settings - ensure that at least one item is selected

for print after an auto ECG is recorded

« If the printer still doesn‘t work: Call your local SCHILLER

representative.

« Ensure that fresh SCHILLER paper is installed.
« Note that the thermal paper used for the AT-101 is heat

and light sensitive. If it is not stored in its original seal,
stored in high temperatures or is simply old, print quality
can deteriorate.

« Ensure that the paper has been installed correctly with

the paper mark at the top.

« Over a period of time, the printing ink from the grid on the

paper can form a film on the thermal print head. Clean
the thermal print head with a clean cloth as described
previously.

« If the problem persists call your local SCHILLER repre-

sentative.

are enabled for the printout.

unit is still not working call your local SCHILLER repre­sentative.

Page 53

6 Care & Maintenance

6.7 Fault-Finding

AT-101

6.7.1 Accessories and Disposables

V Always use SCHILLER replacement parts and disposables, or products appro-

ved by SCHILLER. Failure to do so may endanger life and invalidate the
guarantee.

Your local representative stocks all the disposables and accessories available for the
AT-101. A full list of all SCHILLER representatives can be found on the SCHILLER
website (www.schiller.ch). In case of difficulty contact our head office. Our staff will be
pleased to help process your order or to provide any details for all SCHILLER
products.

Page 54

Art.-no.: 2.510526 Rev.: c

Technical Data 7

AT-101 User Guide System 7.1

7 Technical Data

7.1 System

Dimensions

Built-in monitor

Power supply

Mains Voltage
Power consumption
Battery

Battery

Capacity

Battery Life
Recharging time

Line frequency filter

Printer

Frequency range

Chart paper

Interfaces

Standard

SCM (Option)

290 x 198 x 76 mm, approx. 2.6 kg

76 x 57 mm effective display area, 320 x 240 dots resolution

• 220 - 240 V (nominal), 50 / 60 Hz; 100 - 115 V (nominal), 50 / 60 Hz

• Max. 28VA

• Operation with built-in rechargeable battery

Lead acid 12 V

• 3 hours normal use (every 10 min printout of 10 pages),
6 hours Standby

• Under normal operating conditions, 4 years

• 90 %: approx. 7 hours, 100 %: approx. 15 hours

Distortion-free suppression of superimposed 50 or 60 Hz sinusoidal interferences by
means of adaptive digital filtering

High-resolution thermal head printer, 8 dots/mm (amplitude axis), 40 dots/mm (time
axis) @ 25 mm/s

• 0.05 ... 150 Hz (IEC/AHA)

• Thermo-reactive, Z-folded, 72 mm wide

RS-232 interface for data transmission to PC (SEMA-200) and external modem con­nection; parallel port for external printer

RJ45 Ethernet and RJ11 Modem (Option) for XML output to PC (SEMA-200) via
Schiller Communication Server.

Memory (option)

Environmental conditions

Operating temperature,
Storage temperature,
Relative humidity
Pressure during operation

Art.-no.: 2.510526 Rev.: c

Storage for up to 40 ECG recordings

• 10 ... 40 °C

• -10 ... 50 °C

• 25 ... 95 % (no condensation)

• 700 ... 1060 hPa

Page 55

7 Technical Data

7.2 Technical Data for ECG

AT-101

7.2 Technical Data for ECG

Patient input circuit

Leads

Monitor display

Leads

Status

ECG Printout

Chart print-out speed
Sensitivities
Recording track

Automatic lead programs

Data record

Fully floating and isolated, defibrillation-protected (only with original SCHILLER pa­tient cable)

• 12 simultaneous leads

• Standard

• Cabrera

• 3-channel display of the selected leads
– selectable speed of 25, 50 mm/s

– selectable amplitude 5, 10, 20 mm/mV

• Filter status (on/off)

• Insufficient electrode contact

• Heart Frequency, HF

• Date and Time

• 5/10/25/50 mm/s (manual print)

• 5/10/20 mm/ms, either automatically adjusted or manually selected

• 3-channel presentation, optimal positioning on a width of 72 mm, automatic ba­seline adjustment

• 3/12-channel presentations of 12 simultaneously recorded standard leads Nu­merous print-out formats can be selected

• Patient data (name, age, height, weight, BP), user ID

• Listing of all ECG recording conditions (date, time, filter)

With optional interpretation (C)

program

Filter

Myogram filter

(muscle tremor filter)

ECG amplifier

Sampling frequency
Resolution
Pacemaker detection
Frequency range
Measurement range
CMRR
Input Impedance
Defibrillation protection

• ECG measurements results (intervals, amplitudes, electrical axes)

• average complexes with optional measurement reference markings

• guidance on interpreting adult and paediatric ECG’s

25 Hz or 35 Hz, can be switched on/off

Simultaneous recording of all 9 active electrode signals (= 12 leads)

• 1000 Hz

•5 µV / 12 bit

• ≥ ±2 mV /pulse widths ≥ 0.1 ms

• 0.05 ... 150 Hz (IEC/AHA)

• dynamic ±10 mV, DC ±300 mV

• > 100 dB

• 100 MΩ

• 5000 VDC

Art.-no.: 2.510526 Rev.: c

Page 56

Technical Data 7

AT-101 User Guide Safety Standards 7.3

7.3 Safety Standards

Safety standard

EMC

Protection class

Conformity/Classification

Protection

IEC/EN 60601-1
IEC/EN 60601-2-25

IEC/EN 60601-1-2

I according to IEC/EN 60601-1 (with internal power supply)

CE/IIa according Directive 93/42/EEC

This device is not designed for outdoor use (IP 20)

Art.-no.: 2.510526 Rev.: c

Page 57

7 Technical Data

7.3 Safety Standards

AT-101

Page 58

Art.-no.: 2.510526 Rev.: c

AT-101

Index 8

User Guide

8 Index

A

Abnormal ECG ...................................... 37

Accessories and Disposables
Age Assumed to be
Auto Mode recording
Auto Sensitivity
Auto-Centering
Automatic Format 1 and 2
Automatic Mode
Auto-Storage
Average Cycles

............................... 37

............................. 12

...................................... 28

...................................... 38

.................................... 26

......................................... 38

..................................... 35

............... 53

..................... 35

B

BASE INIT ............................................. 46

Baseline filter
Baseline Stabiliser
Battery

Battery Life

Capacity
Battery disposal
battery symbol
Baudrate

......................................... 36

................................. 36

....................................... 54

........................................... 54

..................................... 48

....................................... 16

................................................ 41

C

C = Interpretation ................................... 43

C = Measurement and Interpretation
Changes setting
Changing the fuse
Changing the mains voltage
Charging the battery
Charging time
Chart Speed
Cleaning
Colour Code
Communication
Communication (RS-232) Test
Communications Test
Confirm the setting
Connecting AT-101

.................................... 32

................................. 49

.................. 49

.............................. 48

........................................ 48

.......................................... 29

................................................ 50

.......................................... 23

..................................... 41

.............. 47

............................ 45

................................ 32

............................... 15

D

Date and Time ....................................... 40

Default Settings

..................................... 46

E

ECG Printout ............................... 34, 35

ECG Settings
electrode indication
Electrode Placement
Entering Patient Data

Art.-no.: 2.510526 Rev.: c

......................................... 33

............................... 24

............................. 19

............................ 18

F

Fault-Finding ......................................... 52

Filters

..................................................... 36

..... 43

H

highlight all recordings .......................... 30

I

Inserting printing paper ......................... 17

Installing New Software Options
Installing New Software Options (Upgrade)
45
Interpretation

..................... 34, 35, 37

........... 45

..

K

Keypad .................................................. 12

L

Language .............................................. 40

LCD Screen
Lead Group
Lead Sequence
Lead Test
Leads
Left Posterior (V4-V9)
Line Transmission

........................................... 14

........................................... 28

..................................... 38

.............................................. 24

.................................................... 38

........................... 38

................................. 31

M

M = Measurement ................................. 43

m = Memory
Mains filter
Maintenance interval for the battery
Manual Mode
Markings
Measurement
Memory
Mode
Modem Init.
Modem Transmission
Myogram Filter
Myogram filter

.......................................... 43

............................................. 36

...... 48

........................................ 27

...................................... 34, 35

.............................. 34, 35

................................................. 30

........................................... 41, 42

........................................... 41

............................ 31

...................................... 29

....................................... 36

N

Navigation with Keypad buttons ............ 32

Navigation with Softkeys
Nehb (D, A, J
Nehb Leads

......................................... 38

........................................... 21

....................... 32

P

Paper Mode ........................................... 40

patient data key
Phone No.
Potential Equalisation
Print Setup
Print Setup Menu
PRINT SETUP softkey

..................................... 18

................................... 41, 42

............................ 16

............................................ 44

.................................. 44

.......................... 44

Q

QRS Beep ............................................. 29

R

Recentering ............................................ 29

Recharging time
Replacing the Recording Paper
Rhythm Leads 1
Rhythm Leads 2
Right Precordials (V5r)
Right Precordials (V6r)

..................................... 54

............. 51

.......................... 34, 35

.......................... 34, 35

........................... 38

........................... 38

S

SCHILLER Communication modul

Ethernet

............................................ 11

Modem

.............................................. 42

Modem connector
Net Setup
Option

................................................. 9

Screen (and Manual Printout) Settings
screen contrast.
Select desired parameters
Self-test

.................................................. 47

Sensitivity
Setup
Signals
Skin/Electrode Resistance
Smoothing Filter
Softkeys
STOP printout
System Settings

.................................... 28, 37

...................................................... 32

................................................... 38

................................................. 12

............................. 11

.......................................... 42

.. 28

..................................... 17

..................... 32

..................... 24

..................................... 36

........................................ 12

..................................... 39

T

t = Thrombolysis ..................................... 43

Table fuse types
Technical Data
Test and Information
Thermal Paper Handling
To confirm a setting
Transmitting the Recordings

..................................... 49

....................................... 54

.............................. 43

........................ 51

............................... 32

.................. 31

U

Unconfirmed Report ............................... 37

Unit

......................................................... 40

Unit Defaults Table
Update the Software
Upgrade
User Identification (User ID)

................................................. 45

................................ 46

.............................. 45

................... 40

Page 57

8 Index

AT-101

Page 58

Art.-no.: 2.510526 Rev.: c