Schiller AT-1 Service manual (1999)

SCHILLER

SERVICE

HANDBOOK

AT-1 3-Channel

Issue

ECG

Unit

3

September

1999

AT-1

3-Channel

ECG

Service

CH-6340

Phone:

Home

page:

Handbook

SCHILLER

Altgasse 68

Baar, Switzerland

[phone]

Fax:

~414176108

http://www.schiller-ag.ch

Unit

AG

80

September

1999 Article Number:

i

2.

530

033

AT-1

Article

Service

Number

SERVICE

Handbook

2.530

033

SCHILLER

HANDBOOK

AT-]

Issue

3-Channel

3

September

ECG

Unit

1999

I

Issue 1:

Issue
Issue

Associated

Guide to

July

1995

July

2:

3:

1998, Update and revision to incorporate latest hardware and software.

September 1999. Update and revision

Documents

SCHlLLER

Interpretation

and Measurement Program E
SCHILLER AT-1 USER GUIDE
SCHILLER

AT-1

USER GUIDE - Italian / Spanish / Portuguese Article

SCHILLER AT-1 USER GUIDE

to

incorporate latest hardware and software.

/ D /

F

-

English / Gennan / French Article

-

Swedish

Article

Article

No.
No.
No.

No.

2.510 179

2.510 171

2.510 172

2.

510

322

0

Copyright 1998

by

SCHILLER AG

93/42/EEC

'Notified Body'

Medical Devices:

DEKRA

AG

01

24

SCHILLER

SERVICE

HANDBOOK

AT-1

3-Channel

Issue 3 September

ECG

Unit

1999

DECLARATION

Diagnostic

Serial

Year

of

System

numbers starting

manufacture:

:

with:

OF

CONFORMITY

Cardiovit

190.

1995

Onwards

AT-1

We, the undersigned, hereby declare that the medical device (class

above conforms with the essential requirement listed in Annex

1

of

93/42EEC.

This

declaration

Certificate

11425-02
451 12-60-01
451 12- 16-01

of

is

supported

approval

No.:

IS0

9001

IS0 9001/07.94.

Annex

11.

/EN

46001

Section

by:

by

EN

46001 / 08.96

3

of

the directive

SQS

valid

date

17.01.2001

by

DEECRA

93/4UEEC

valid dat

valid date

30.04.2003

30.04.2003

IIa)

specified

EC

Directive

-

ad

-

Baar

(Switzerland) Dated

J.J.

Schmid Markus Butler

Research

&

Development Manager

06.05.1998

Quality Assurance Manager

iii

SCHILLER

SERVICE HANDBOOK

AT-I

3-Channel

Issue

3

ECG

September

Unit

1999

Where

Asia Pacific

to

Obtain

America

Austria

Canada

France

Service

WELCH ALLYN SCHILLER Inc.,

92121,

USA
Telephone:
Fax:

SCHILLER Asia Pacific,

800-535-6663
315-685-3361

10A

Petaling Jaya. Malaysia
Telephone:

FaX:

[phone]
[phone]

SCHILLER Handelsgesellschaft mbH Medizintechnik. , Kampmiillerweg

24,

A-4044 Lmz, Austria

0732

70

Telephone:

Fax:

0732 7157

9 90

SCHILLER France S.A.. Zac des Luats
F

-94350

Villiers slhlarne, France
Telephone:
Fax:

01 49 41 24 40
01 49 41 24 49

000

Jalan

,7420

Carroll Road

SS

3/33,

Taman University,

58.

route de Champigny,

San

Diego, CA

47300

Germany

(EU-Bevollmiichtigter)

India

Switzerland

All

Other

Countries

SCHILLER Medizintechnlk GmbH, Rudolf Diesel
D

-55521

Ottobrunn, Germany

Telephone:

Fax:

Hottine:

SCHILLER Healthcare
Motwane Lane, Ground Floor, Fort, Mumbai
Telephone:
FaX:

ESAOTE SPA Via
Telephone:

Fax:

~

SCHILLER Reorned AG, Riedstrasse

!

Telephone:

'

Fax:

1

SCHILLER AG, Altgasse

~

Telephone:
Fax:

!

Home page:

089 629 981
089 609
089 629 981 36

+91
+91 22

di

[phone]
+39

01 741 02 09
01 740 37 10

41

41

http://www.schiller-ag.ch

0

50

9

0

India

Pvt.

22

263 4381

263

4384

Caciolle

055

41 766 42 42
41 761 08

434

01

68,

CH-6340

15,

1

80

Ltd. Kalpatarn Chambers, Nanik

,1-50127

14, CH-8953

Baar,

400

Firenze, Italy

Str.

14,

023

Dietikon, Switzerland

Switzerland

iv

SCHIUER

SERVICE

AT-I

?-Channel

HANDBOOK

Warranty

Disclaimer

The

Information in

given

as

regarding the contents of this manual. We reserve the right to revise this document and make
changes in the specification of the product describedwithin at any time without obligation
any person

Trademarks

ECG

Unit

Issue 3 September

this

guide has been carefully checked for reliability; however

to the correctness

of

such revision or change.

1999

of

the contents and SCHILLER makes

no

guarantee

no

representations or warranties

to

is

notify

SCHILLER and AT-1 are registered
property

of

their owners.

trademarks

of SCHILLER AG. All trademarks

Copyright Notice

0

Copyright
transmit. transcribe, store in a retrieval system
any

means.

this publication without express written permission

Terms

of

The

SCHILLER AT-1 is warranted against defects

of one

accident

part. Any liability for subsequent damage is excluded. The warranty

unqualified

h

case of a defect, send the apparatus to your dealer or directly to
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

the

instructions.

I998

and

1999

by

SCHILLER AG. All rights reserved

or

translate into

You

any

language, in any

may not reproduce,

electronic, mechanical, magnetic, optical, chemical, manual or otherwise, any part

of

SCHILLER AG.

Warranty

in

material

year

(as

from date of purchase). Excluded from this guarantee is damage caused by

or

as a result of improper handling. The warranty entitles freereplacement

persons attempt to make repairs.

him.

and

unit

and approved attached equipment is used in accordance with the manufacturers

and manufacture for

of

is

void if unauthorized or

the

manufacturer.

the

the

form

duration

defective

are

or

the

by

of

an

THERE ARENO

EXPRESS

OR

IMPLIED

WARRANTIES WHICH EXTEND BEYOND THE
WARRANTIES HEREINABOVE SET FORTH. SCHILLER MAKES NO
MERCHANTABILITY OR

FITNESS

FOR A PARTICULAR PURPOSE WITH RESPECT

THE PRODUCT OR PARTS THEREOF.

V

WARRANTY

OF

TO

SCHILLER

SERVICE HANDBOOK

AT-1

.‘-Channel

Issue

3

ECG

September

Unit

1999

Safety

Notices

TO PREVENT ELECTRIC SHOCK DO NOT DISASSLMB LETHEUNIT.
PARTS INSIDE. REFER SERVICING

DO NOT USE THIS
OR THE PRESENCE

THIS PRODUCT IS NOT DESIGNED FOR STERILE USE.
SWITCH THE
DONOT,UNDERANY

IN

LIQUID.

DO

NOT OPERATE THE

MAINS

DO NOT USE HIGH TEMPERATURE STERILISATION PROCESSES (SUCH AS
AUTCCLAVING). DO NOT USE E-BEAM OR GAMMA RADIATION STERILISATION.

DO NOT USE SOLVENT CLEANERS
USE ONLY ACCESSORIES

SCHILLER
RESULT

LEAD IS DAMAGED OR SUSPECTED OF

AG.

IN

UNlT

IN AREAS WHERE THERE IS ANY DANGER OF EXPLOSION

OF

FLAMMABLE GASES SUCH

UNIT

OFF

BEFORE CLEANWG AND DISCONNECT FROM THE MAINS.

CIRCUMSTANCES,IMMERSETHEUNITORCABLE

UNIT

AND

USE

OF

OTHER THAN RECOMMENDED OR SUPPLIED PARTS MAY

INJURY INACCURATE INFORMATION AND/ OR DAMAGE TO THE

TO

QUALIFIED PERSONNEL ONLY.

AS

ANAESTHETIC AGENTS.

IF

THE EARTH CONNECTION IS SUSPECT OR

BEING

DAMAGED.

OTHER PARTS RECOMMENDED OR SUPPLIED BY

NO

SERVICEABLE

ASSEMBLIES

IF

THE

UNlT.

THE AT- 1 COMPLIES
AFFORDS PROTECTION AGAINST EMISSIONS AND ELECTRICAL INTERFERENCE.
HOWEVER SPECIAL CARE MUST BE EXERCISED WHEN THE AT-1
HIGH FREOUENCY EOUIPMENT.

IT

MUST BE ENSURED THAT NEITHER THE PATIENT NOR THE ELECTRODES

(INCLUDING THE NEUTRAL ELECTRODE) COME INTO CONTACT WITH OTHER

PERSONS OR CONDUCTING OBJECTS (EVEN
THEREIS

WITH SIMULTANEOUS USE

HOWEVER, THE STIMULATION
DISTANCE FROM THE ELECTRODES. IN CASE OF DOUBT, THE PATIENT SHOULD BE
DISCONNECTED

THIS

PATIENT CONNECTION IS FULLY ISOLATED
SCHKLER
VOLTAGE, HOWEVER, WHEN THE ORIGINAL SCHILLER PATIENT CABLE

NO

DANGER WHENUSING THEECG UNITFORA PACEMAKER PATIENT OR

UNIT

IS CF CLASSIFIED ACCORDING TO IEC

CAN

WITH

EMC

REGULATIONS FOR MEDICAL PRODUCTS WHICH

IS

USED WITH

IF

THESE ARE EARTHED).

OF

OTHER ELECTRICAL STIMULATION EQUIPMENT.

UNITS

SHOULD ONLY BE USED AT A SUFFICIENT

FROM

THE RECORDER.

601-1.

THIS MEANS THAT THE

AND

DEFIBRILLATION PROTECTED.

ONLY GUARANTEE PROTECTION AGAINST DEFIBRILLATION

IS

USED.

SCHILLER
SERVICE

HANDBOOK

AT-I

3-Channel

Issue

ECG

Unit

3

September

1999

Safety

Notices

BEFORE USING THE

UNIT

FUNCTIONS AND THE

SCHILLER REPRESENTATIVE.

THE GUIDELINES FOR PATIENT ELECTRODE PLACEMENT ARE PROVIDED AS ON
OVERVIEW ONLY. THEY ARE NOT

THE

AT-1 ECG

PHYSICIANS OR PERSONNEL UNDER THEIR DIRECT SUPERVISION. THENUMERICAL

AND GRAPHICAL RESULTS AND ANY INTERPRETATION DERIVED FROM A
RECORDING MUST BE EXAMINED
CLINICAL CONDITION. THE RECORDING PREPARATION QUALJTY AND THE

GENERAL RECORDED DATA QUALITY, WHICH

ACCURACY, MUST ALSO BE TAKEN INTO ACCOUNT.

IT

IS

THE PHYSICIANS RESPONSIBILITY TO MAKE
EXPERT OPINION ON THE RESULTS, AND TO
INDICATED.

UNIT,

ENSURE THAT AN INTRODUCTION REGARDING THE

SAFETY

UNIT

IS PROVIDED FOR THE EXCLUSIVE USE

PRECAUTIONS HAS BEEN PROVIDED BY A

A

SUBSTITUTE FOR

WJTH

RESPECT TO THE PATIENTS OVERALL

COULD

THE

INSTITUTE

MEDICAL EXPERTISE.

OF

QUALIFIED

EFFECT THE REPORT DATA

DIAGNOSIS OR TO OBTAIN

CORRECT TREATMENT

IF

vii

SERVICE

SCHILLER

HANDBOOK

AT-1

Issue

3-Channel

3 September

ECG

Unit

1999

X

-

SCHILLER

SERVICE

HANDBOOK

AT-i

3-Cilannel ECG

Unit

Issue 3 Seprember 1999

Operaring

Chapter

Elemens

1

Introduction

Operating

Function

Indicators

Settings

Settings

Printout

Default
Service
Installing

LModes

Keys

bgw?e
Filters

Lead

Sequence

Printout

Paper

Standard / Cabrera

for

htomafic Mode

ECG

Format

Average
Measurements
Selecting

Cycles

Rhythm

of

ail

Setting

Printout

Software

Leaah

Settings

Options

Lead

Contents

sequence

Op

eruting

Chapter

Elem

2.2

13

1.1

2.5

1.6

1.7

1.8

1.9

1.9

1.9

1.9

1.10

1.10

1.10

1.11

1.11

1.12

1.13

1.14

1.15

en

1

ts

Page

I.

1

Chapter

Operating

1

Elements

Introduction

PAPER

RELEASE

CATCH

SERVICE

SCHILLER

AT-1

HANDBOOK

3-Channel

Issue

3

ECG

September

Unit

1999

LEA0

INDICATORS

The

CARDIOVIT

AT-1

POWER

INDICATORS

is

a 3-channel portable

SYSTEM

ECG

INDICATORS

recorder

with

Thekeyboardprovidesone touchoperationof allmajorfunctions
giving visual
provided by

and

audible indications

the

AT-

1:

of

settings and alarms.

Two

MAINS AND

'_QUAUSATION CONNECTORS

PATIEM

CABLE CONNECTOR

built-in rechargeable battery.

withLEDs

methcds

andan audible beeper

of

recording

ECGs

POTENTIAL

i

are

Manual

Auto

The

Mode:

Mode a pnntout

battery gives

up

to

8

detaled measurements

any

three

leads

selected by the

time . The leads selection

printout.

is

obtained of

by

the

user.

hours

of mains-independent use.

of

the

ECG

recording for accurate analysis

user

can

be changed at

all

12

leads

An

can

be

printed

will

in

a predefined

continuously

during

and

format

in

real

before

specified

optional measurementprogram gives

of

results.

I.

Page

I2

SCHILLER

SERVICE

WDBOOK

AT-1

3-Channel

Iswe

ECG

3

September

Unit

1999

Chapter

Operaring

I

Ekmenrs

Operating

Two

basic

I

Manual

Switch

ManuaI

Change

speed.

Sensitivity,

1

Modes

modes

Mode

Unit

ON

Recording

-

Leads.

Filter

of

opemion

Recordhg

are

used

with

the

AT-

I

i

1:

1

Auto

IMode

Swtch Unit

I

j

Recording

ON

I

Connea Patient

-

I+

.............

............

I

I

Manuai

printout
indicated

?he

following

before

or

Mode

provides

of 3

leads

on

the

can

during

Lzad

chart

Sensitivity

Myogm

Full

Condnuous

of

3

rhat

are selected and

keyboard.

be

freely selected

recording:

Group

Speed

Frlter

&rolls

of

leads

(until

key

pressed)

..........

a

real

time

all operaling

printout

STOP

modes

and

selllngs

1

be

programmed

User

l2

(auto

GULL?.

12

lead

printout

(auto format

.Automatic

Automatic Mode provides a printout

gving

all

12

The following

freely

are

prowded

1)

.Mode

10

seconds

I&.

can

before

recording:

Led

Format

Chan Speed
Sensitivity
Measurements
Avenge Cycles

in

the

of ECG recording

AT-i

lead

j

printout

format

of

2)

Page I.3

Chapter

Operanng

I

Elements

SERVICE

SCHILLER

ANNDBOOKIssue 3 September

AT-I

3-Chunnel

ECG

Unit

I999

Function

Keys

Switch

unit

on

Switch unit

Printout stored

Start

Start

Stop

off

automatic recording

manual

recording

recording

ECG

m?

;-\uTo:

m.

Id

ca

I

,iLT

4

Switch myogram riiter

A.

..........

Lead

Cancel

or

Automauc

$

Key

for

1

k

Key for initiation

pup

selector

enable

QRS

beeper

ECG

sensiuvity adjustment

ECG

automatic

Chart

only

mV

indication

of

setups

(muscle

sensitivity selector

speed

mark

on

and

tremor)

in

recording

selector

output

during

selection

of

on

or

off

automatic

(5,

second format for Auto printout

(5,

10

or

25

or

50

manual

mode

only

20

mm/mv)

mm/s)

recording

for

for

manual

manual and

recording

Page

I.4

SCHILLER

SERVICE

AT-I

3-Channel

HANDBOOK

Indicators

ECG

Issue

3

Unit

September

1999

Chapter

Operating Elemts

I

0-

Olr

0

PAPER

0

LEADOFF

0

FILT

avR

(ti

0

v1

0

V4

aMaVF

aW

Ill)

v2

v3

V5

V6

Mains indicxor

Battery lamp

Warning

Warning

Myogram filter (lit when

Indicator lamp

(lit

when

(lit

when

lamp for end

lamp

for

loose

for

selected lead amup

mains

connecred)

mnning

of

paper

on

battery power

or

paper

jam

electrode connection

filter

ON)

I.

-

mains

II,

III

(Cabrera: an,

not connected)

I.

Indicator lamp for selected lead pup am, aVL. aVF (Cabrem
aW,

m)

Indicator lamp for selected lead pup

Indicator lamp for selected lead group

V1,

V4,

V2,

V5,

V3

V6

-am)

When the lead group

OFF

indicator

A

special lead ,goup

When

this

Note:

is

lit.

combination is selected.

The lead indicator

all

12

leads are printed

aVR,

(V1,

aVL.

II

and

ALT

!amps

aVF

is selected,

V5)

can be selected for

-

as

(downwards lead selector)

both

indicator lamps

show

the

derined

no

lead-off

lead group

in

the

auto

alarxn

manual

mode

V1-V3

and

for

manual

mode

format.

beep is sounded, only

by

pressing

V4-V6

are

lit.

mode

only.

In auto mode

the

LEAD

Page

1.5

Chaper
Operating

I

Elements

Settings

Each

the required
number then selects

As

of

the programmable parameters

format.

a

section

a

specrfic

soon

as

the

XLT

key

is

pressed, the keyboard

is

set by means

number and one

parameter setting.

SERVICE

of

acode.

This

code comprises

or

more parameter numbers.

is

dedicated

to

the proogramrmng function.

SCHILLER

AT-I

HANDBOOK

This

combined code

3-Channel

Issue 3 Seurember

anumber

ECG

for

Unit

I999

!

t

The setting
key
the

unit

As

an example,

On

the following pages the programmable parameters

is

remembered and the keyboard

is

pressed Once the semgs have been cont'irmed, they are stored

is

mtched

if

you

Start

programming

Switch

off.

want

to

set the language

I

Key

0

Program sequence

to

numerical keyboard

/

is

only released for other funcuons when the

on

your

Key

2

I

Key

and

in

the

memory even when

AT-1

to

English,

2

proceed

CONFIRM

as

SETTING

the programming sequences are

mop

follows:

given.

L\

!

Page

,

1.6

SCHLLER

SERVICE

HANDBOOK

AT-I

3-Chunnei

Issue 3 September

ECG

Unit

I999

Chapter

I

Operating Elements

Confm

*

from

English.

**

from

the

selection

software

software

by

version

version

0

pressing

1.7.

Please

1.9

STOP.

note

i

1

I

that the

!

German

Setup

language

Printout

I

i

(ALT-0-1-1)

will

appear

in

Page

1.7

Chapter

u.,

Operating

I

Ekments

SERVICE

SCHILLLR

AT-i

hXVDBOOK

3-Channel ECG

Issue

3

September

Unir

I999

Settings

There

are

three

-

Baseline ffiter

Mains

different filters which can be set individually

filter

as

follows:

Myogram

ALT

fdter

5

Baseline

Mains

Filter

Myogram Filter

~

EntvKeySequence

0 I 0.05

1

3

Hz (Default)

10.15Hf

10.30HZ

Enby

Key Sequence

The set value is the lower
set to

0.05

Hz.

1

I

I

,

limit

The settings

Filter

Setbng

of

the frequency range and

0.15

and

0.30

when absolutely necessary, as the possibility

the

affect
The

original ECG signal, especially

Mains

fdter

is

an

adapdve digital interference filter designed

,

Hz

should only be

exists

the

ST

segments.

suppress AC interference without attenuaring or distorting the

The

LMyogram

tremor. The set value will be the new upper

range as soon

Titer

suppresses disturbances caused

as

the

FlLT

key is switched on.

limit

of

FilterSetting

is

normally

used

that they could

ECG.

by

strong muscle

the

frequency

r

I

to

Page

1.8

The recorded ECG is stored uniiltered, which means that the

myogram filter

As

the

unfiltered ECG
possible to print the stored ECG either
myogram filter. Filter

TILT'.

and

the indicator

filter is set to either

Confm

has

When the

ail

selections

no

effect on the Iverages.

is

stored in Automatic mode,

with

or without passing the

ON

is indicated

FTLT

key

is

imp

goes out. The cutoff frequency of the myogram

25

or

35

Hz.

by

pressing

by

pressed

the

the conuol lamp

sgain,

STOP

it

the filter

key.

is therefore

marked

is

switched off

SCHILLER

SERMCE

AT-]

HANDBOOK

Settings

Lead

Sequence

Printout

Paper

3-Channel

Issue

ECG

3

September

Unit

1999

Operaring

Chapter

Ekmn

1

Conjirm

simurtaueous

Sequential

Auto-Centering

Auto-Centering

the

selection

I

1

~ntry~ey~equence I

I

i

i

I

I

I

I

ON

OFF

by

7'

pressing

All

12

STOP.

ECG

are printed

,411

12

ECG leads

contiguous time segment

mode

only).

All

ECG traces

width.
ECG traces are set

Sequences,

I

2

Cabrera

1

3

~

Simuitaneousprint

I

4

j

Sequentid

!

5

i

Auto-CenterinqON

I

6

Aura-Centering

1

7 1 Z-Fold

i

8 I PaperRoll

leads

are printed

in

the

same time segment

are

printed

are

centred dynamically for optimal use

to

the baseline and

Print

&

Paper

Definition

Lead

Print

Paper

as 4 groups

as 4 groups

of

approximately

Sequence

OFF

(in

may

3

1

i

!

I

i

I

I

I

I

I

of

3

leads.

automatic

of

3

2.5

possibly

mode

leads. Each group

seconds

overlap.

All

ECG

only).

(in

automatic

of

paper

leads

is

a

2-folded

Roll

Standard / Cabrera

Some physicians are used
Cabrera

Lead

sequence. The standard

I

Zfolded paper,

roll,

Paper

Lead

sequence

to

study the electrode signals

5randara

90

90

mm

and

mm

wide,

20

m

long

wide

in

a different order (sequence) called

Cabrera lead groups for the

Cabrera

AT-

1

are:

the

Page

1.9

Chapter

1

Operarirrp Elements

SER'ITCE

SCHILLER

AT-1

HNDBOOK

3-Cilannel

ECG

Issue 3 September

Unit

I999

Settings

Two

ALT

ECG

.for

Automatic

separate

key

)as

formats

follows:

Format

Mode

for

the automatic

1

ECG

Automatic

ourput

ECG

Setup Format

cm

be selected

Format

Chart speed
Chart speed

is

IS

25

50

(1

or

mm/s

mm/s

1.

immediately

I

after

the

i

Confirm

Average

Conjinn

Note:

the

selection

Cycles

l

or

2

the

selection

Lead

by

2

by

selection

pressing

1

5

I

I

'

6

I

I

I

I

7

I

,

I

8

1

I

I

9

~

I

pressing

for

the

STOP.

average cydes are pnnted.

I

I

4

*

3

(25

mWs)

The average complexes are orinted
leads at a chart speed

4

*

3

(50

The average complexes are printed

1

leads at a chart speed

~

6

I

The average complexes are orinted

1

wtM

11

~

The average complexes are pnnted out for all

~

individually with

mrms)

2

(50

mws)

one rhvthrn lead at a chart speed

*12(25mnrls)+2'Rhy

of

25

or

50

1

*

Rhy

two

rhythm leads at

mds.

mads.

out

in four groups

out

in

out

in

of

a

chart

STOP.

2.

rhythm leads

are

defined

on

the next page.

four groups

six grouos

50

mWs.

1'2

speed

leads

of

of

of

of

25

three

three

two

mnrls.

leads

I

I

~

1

I

I

,

I

~

Page

1.10

SCHILLER

SERVICE

HANDBOOK

AT-1

3-Chrurnei

Issue 3

ECG

September

Unit

I999

Operaring

Chapter

Elements

I

Settings

Measurements

Confirm

Selecting

.for

Automatic

the

selection

Rhythm

Measurements

by

pressing

Leads

t

'

1

ALT

'

I

I

Mode

and

Markings

Detailed table of measurement

values

5

6

of

i

suppressed.).

I

Oetailed table
Reference

j

well as end of T wave) are omitted.

i

Reference mark~ngs (beginning and end

1

well

as

end of T wave) are added

STOP.

3

j

Setup

Rhythm

4

I

SetupRhythmLead2

(Messurement

elecmcal

axes.

of

measurement results

marlcings

(beginning and end of P wave

Setup

Lead

1

intervals, and heart rate are not

lead

output

Optlon

Format

results

IS

is

to

the

only)

omitted (However,

pnnted.

and

QRS

of P wave and

ECG

cycles.

1

1

QRS

I

I

i

the

as

as

I
I

I

I

1

]

I

I

Confirm

Enay

the

Extremity

Key

Sequence

sekcrion

Leads

by

pressing

I

-Baa

1

I

EneyKeySequence

Precordfet

Leads

1

1

I

lsad

w

j

STOP.

Page

1.iI

Chapter
Operaring

1

Elements

SERVICE

SCHILLER

HANDBOOK

AT-1

3-Chei

Issue 3 September

ECG

Unit

I999

I

I

Printout

The defined

A

pnntout

on

the

Unit designation

Serial number
Leads:

ECG

Patient

MECG:

Measurements:

Marks:

Selected

of

all

of

installed

fonnat:

data

Seftings

formars

the

rhythm

and

defined settings

software:

(AT-1).

form

leads Leads selected for

settings can be checked as follows:

ALT

-

0

-

1

-

any

number

will

be produced and gives the following information. depending

software options installed (M=Measurement)

version

Standard

Long

Enabled

Average cycles

(e.g.
Enabled

Enabled

(0001,

(+)

4

*

3

(+)

(+)

(S)

(25

or Cabrera

short

or Suppressed

as

mm/s))

or

Suppressed

or

Suppressed

(C)

(0)

or suppressed

defined

R1.

R2

rev.

in

(-1

(-1

(-1

auto

and

(-1

ECG

software

recording

,

I

-I

setup

I

Automatic centring: Enabled
Papertype: ZFolded or
Printout of signals: Sequential
Baselinefdter:

Mainsfilter: jOHz, 60Hz

Myogram filter:

0.05,0.15,

25Hz

(+)

or 35H2,

or Suppressed

Roll

or

Simultaneous

or

0.30

Hz

or

OFF(-)

On

(+)

or

(-)

Off

(-)

Page

1.12

SCHILLER

SERVICE

HANDBOOK

AT-I

3-Channel

Issue

ECG

3

Sentember

Unir

1999

Operaring

Chapter

Ekmenrs

1

Default

The

default

settings

Settings

are

as

follows:

Semng

bng=ge

Leads

Format

Format

1

2

1

I

I

1

I

I

ECG:

Patient

Pattent

AT-1

S

English

Standard (S)

25

mds,

Short

data

form

data

form

(+)

(+)

(0)

!

I

I

I

MECG: 2.6

Standard (S)

ECG:

25

AT-;

English

mm/s

(50

!

Measurements: Suppressed

I

I

I

Marks: Enabled

Measurements: Suppressed

Marks: Enabled

M

Short

rnm/s)

j

I

i

(0)

+1

(-)

(+)

(-)

(t)

1

To

reset the

unit

Mains

to

the

basic

Filter Setting

default

I

settings,

ALT

press

-

50

0 - 6

Hz

-

any

1

I

I

number

50

Hz

1

Page

I.I3

Chapter

Operanhg

I

Ekmenn

SCHILLER

SERVICE

HANDBOOKissue 3 September

AT-1

3-Chunnel

ECG

Unit

1999

I

Service

The service prrntout provides

of

only.

See

Printout

certain reference voltages

To

obtain

the service printout press

also

Chapter

5.

information

and

important internal offset values. These values are

of

the patient cable

ALT

- 0 -

3 - 3

and

elecmdes

and

gives the value

for

rnformation

Page

1.14

SCHILLER

SERWCE

EGWDEOOK

AT-1

3-ChanneL

Issue

ECG

3

September

Unit

1999

Operaiining

Chaprer

Ekmentr

I

Installing

To

Acceptance

MORE

...

Software

upgrade

the

fiT

of

THAN

AT- 1 from.

- 0 - 4 -

the

code

is

10

A'ITEMPTS

Options

for

example

followed

indicated

TO

by

by

a

ENTER

standard

the

series

to

upgrade code

of

beeps.

CAUTION

THE

M

version type the

(obtainable

INCORRECT

CODE

following:

from

Schiller)

BLOCKS

THE

W

Page

1.15

Chapter

Operating

I

Elems

SERWCE

SCHILLER

AT-1

HANDBOOK

3-Channel

Issue

3

ECG

September

Unit

1999

-.

,

,

Page

1.16

SCHILLER

SERVICE

HANDBOOK

AT-I

3-Chei

Issue

ECG

3

Unir

September

!999

Chapter

Functional Overview

2

Tntroakction

Control and

Power Supply

CPU

and

Memory

Control

ECG

and

Thermal
Paper Mark
Power On Reset

Stepper

Amut?@r

ECG

Isolared

ECG

Signal

Power

Supply

Processing

Power

Supply

Print Head

Motor

Conrroller

IMK

II-2

Power

board

Circuits

board

Controller

Supplies

Functional

Contents

MK

I1

-

I

MK

11

-

1

Chapter

2

Overview

2.2

2.4

2.4

2.4

2.4

2.5

2.5

2.5

2.5

2.5

2.6

2.6

2.6

Page

2.1

Chapter

Functional

2

Overview

Introduction

This

chapter

to enable

modules. A functional block

the

provides

Service engineer

a

functional

SERVICE

overview

to

idenufy processing paths in order

diagram

of

supports

the

AT- 1 electronics. The

rhe

text.

SCHILLER

WDBOOK

to

help idenufy possible

aimof

AT-I

Issue

this

3-Channel

3

September

overview

faulty

is

ECG

Unit

I999

i

Page

2.2

SCSILLER

SERWCE

fiVDBOOK

AT-I

3-Channei

issue

ECG

3

Unir

Se.ptember

1999

Chaprer

Functional Overview

3

Page

3.3

Chapter

Funcrionai

2

Overview

SERVICE

SCHILLER

AGWDBOOK

AT-1

3-Channel

Issue

3

September

ECG

Unit

1999

Control

Power

The

35V(+U).

charges the battery wnen
voltage.

An
directly from the keyboard
overvoltage
undervoltage

The
dc supply
connected (i.e.

A

Battery low signal
compensates
only

Note:

CPU

and

Supply

mains

This voltage

ON/OFF

mains

LED

at

10.3V.

The

off

and

Processing

Power

suuply

control logic switches

on

either

is

detected

is

lit directly when

(+US)

and

the

for

voltage drop when the printer stepper motor is active

bartery voltage

(p0FF)

Supply

is

full

wave rectified

is

used

by a switched voltage generator

mains

and

the

5.2V

or

on

+us

activates signal +BAIT when the

unit

is

running

(BLOW)

when

is

is

the

board

to

produce

is

connected. When

+UD

to

three voltage regulators. The unit

then held

24V

(indicating over current) the unit

mains

on

generated when battery voltage

also

voltage

on

supplies directly switches

is

connected. The same circuit

battery power).

monitored directly

falls

below approximateiy

LMK

an

mains

from the CPU (signal

Circuits

I1

-

L

unregulated

is

unit

by

the CPU which switches

dc

supply

to

produce

not connected,

!J,PO~.

the

unit

off.

is

directly switched

also

monitors

is

switched

(+US)

falls

and

the

9.4V.

on

of

approximately

+UD

(13.jV).

+UD

is

is

Detection

Similarly when

and

mains

to 11.3V. A circuit

Blow signal

+UD

the battery

switched

off.

the

switched

is

is

active

the

unit

on

of

an

not

-.

Overall control and coordination
control functions.

of

the

AT-1

Memory

Program

An EPROM contains the unit software. The EPROM

Static

The

RAM

when the unit

Serial

The serial

Memory

RAM

Memory

memory stores

is

switched

EEPROM

EEPROM

the

off.

(U12)

ECG

data

stores the

and comprises

unit

base settings.

is

by 68332 CPU which performs

has

128

kByte

of

memory.

two

128

kbyte

RAM

chips.

all

timing

All

data are lost

..

and

.

Page

2.4

SCMLLER

SERVICE

AT-I

3-Channel

WDBOOK

ECG

issue

Unir

3

September

I999

Funcrional

Chapter

Overview

2

Control

Thermal

!

Paper

Power

and

The Thermal
controller senalises the

applied

and

pnnter

Power

Print

hnt

to

the

head.

tmmg

Head

Head

and

are

performed

iMark

The Paper

input

1.

The Power
follows:

Mark

signal

from

to

the comparator is approximately

On

Reset

on

reset circuit controls the master reset

To

provide a delay

and

give

the

To

disable the unit

on

2oOms

if

Supply

board

Controller

is

controlled

data

for the pnnt head

thus

the intensity

the printer

initial

reset time required by the

the

+5V

by

a

pnnt

of

by the CPU.

is

fed

3.SV

switch-on

rail

drops

and

the pnnrout. Both applicauons, pnnt head conuoller

to

and

to

ensure

below

LMK

head conrroller and umer cxcuit The

the

a comparator.

when

of

68332

I1

tuner

cmmt controls how

The

this

is

present the

the

CPU.

This

that

the power supply

processor.

-

I

paper

circuit has

long

mark

detection voltage

PMARK

signal

two

is

fully stabilized

functions

+4.75V.

pnnt

current

is

logic

head

is

as

Stepper Motor Controller

The printer stepper motor speed

is

controlled

by

a timer circuit.

Page

15

Chapter

Funcrionai

2

Overview

SERVICE

SCHILLER

HANDBOOK

AT-I

-1-Chunnel

Issue

3

ECG

September

Unit

I999

ECG

ECG

ECG

AmplQ7er

Isoiated

DUDC

Circuit.

The

are

Servicing Note:

converter

-2.OVi

stabilised

MK

Power

circuits

and the 2Vi isolatedreference voltages are

by a &nor

11-2

Supplies

produce

diode

When
used for reference.

all

the isolated power voltages required by

and voltage follower circuit.

taking

measurements always ensure

Signai

The incoming
inverting operational-ampwiers giving a gain of

(approximately

The

multiplexer sampling rate

Noise

The right leg electrode to

some

patient noise and
patient left leg electrode
ground

ECG

signals

RA.

LA.

and

1

Idlz)

and amplified by

is

1000Hz.

Damping

the

patient

is

thus

reducing incoming signal distortion,

is

phase swted

to

cancel (or reduce) patient induced

C1

to

C6

23

before being applied to

the signal ground reference signal. To assist

180".

This phase shifted signal

noise.

generated fromthe-5Vi

are

27

kHz

low-pass

11.

The signals are

the

the

the

ECG

supply.

that

the

isolated

fdtered

and

applied

further

incoming signal

is

low

multiplexer.

then used by

Amplifier

The

voltages

ground

is

to

non-

pass filtered

in

cancelling

from

the

the

signal

I

,

!

Page

2.6