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

+4141766 42 42

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

No. No. No.

No.

2.510 179

2.510 171

2.510 172

2.

510

322

0

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

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:

(603) 777 5336 (603) 777 5744

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

+39 055 422 91 +39

01 741 02 09 01 740 37 10

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

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

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

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

1.10

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

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

Stop

off

automatic recording

manual

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

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

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

by

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

,

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

the

selection

I

1

~ntry~ey~equence 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

of

approximately

Sequence

OFF

(in

may

3

1

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

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

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

'

6

I

7

I

,

I

8

1

I

9

~

I

pressing

for

the

STOP.

average cydes are pnnted.

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

25

three

two

mnrls.

leads

I

~

1

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

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

QRS

I

i

the

as

I I

I

1

]

I

Confirm

Enay

the

Extremity

Key

Sequence

sekcrion

Leads

by

pressing

I

-Baa

1

I

EneyKeySequence

Precordfet

Leads

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

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

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

1

2

1

I

1

I

ECG:

Patient

Pattent

AT-1

S

English

Standard (S)

25

mds,

Short

data

form

data

form

(+)

(0)

!

I

MECG: 2.6

Standard (S)

ECG:

25

AT-;

English

mm/s

(50

!

Measurements: Suppressed

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

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

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

2.5

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

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

Detection

Similarly when

and

mains

to 11.3V. A circuit

Blow signal

+UD

the battery

switched

off.

the

switched

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

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

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

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

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

signal

I

,

!

Page

2.6

SCHILLER

SERVICE

HANDBOOK

AT-1

3-Chl

ECG

Issue

Unit

3

September

1999

Fault

Diagnosis

and

Check

Chapter

Procedures

3

Znb.Odrrctr0

Fault

General Check Procedures

Printer

‘n

Dipgnosis

Check

Chart

and

Contents

Fault

Check

Chapter

3

Diagnosis

Procedures

3.2

3.3

3.4

3.5

Page

3.1

Chapter

Fault

3

Diagnosis

and

Check

Introduction

The

AT-

1

is designed to

1

ismodulereplacement andnot boardrepair. procedures procedures

An

initial

finding cham and procedures cases module given parameters instructions for given

If

the

settings and parameters that have been entered.

that

are

fault

the

fault

is

stated.

should

in

Chapters

initial

Procedures

be

sunple

will

quickly

designed

diagnosis chart

and

so

that test equipment

is

on

finding

be

and

charts should indicate

the

first

module

checked in the

setting-up

all

replaceable modules, along

4

and

of

the

5.

fault-finding chart

to

use

and sunple

to

The

purposeof thischapter

SCHILLER

SERVICE

HANDBOOK

service: the service ptulosophy of

is

AT-1

3-Channel

Issue

3

the

to

provide fault-finding

September

efficiently identify a fault to a specific module. Fault-finding

is

kept to a minimum.

provided detailing

the

following

given

is

the

order

given. When a module

module may

does

not indicate the area where the fault exists, re-check

all

the general fault indicadons. Use

pages to indicate a faulty area

the

most

likely

faulty

area.

one

most likely to contain the fault. Other modules

has

been replaced specific test

be

applicable. The removal and replacement

with

any setup

If

these are correct, check the software.

or

check

or

module.

When

more

procedures required,

the

In

than one

all

AT-

fault

most

are

the

ECG

Unit

I999

Page

3.2

SCHILLER

SERVICE

XWDBOOK

AT-1

3-C;lannei

issue

ECG

3

Unit

September

1999

r'cuiit

Diagnosis

.ma

Check

Cilapter

Procedures

3

Fault

Diagnosis

Chart

..

.

Chapter

Fault

3

Diagnosis

General

The boardhas beenreplaced Itis not afullfunctional test(whichcanon1y equipment

1

functional

information

relevant User

To

1.

2.

3.

4.

5.

6.

and

Check

Procedures

Check

Procedures

procedure detailed here

in

the

factory)

areas.

The

insmctions given here are guides

is

required (general settings, comprehensive menu guides etC.j please refer to

Manual for

carry

out

the

Connect

Switch

flash

Carry

Connect Press the

good Press the

mains

the

for a few seconds

out

the

an ECG

MAN START

quality.

AUTO

general

unit

AT-1

power

on

by pressing the

Printer Check detailed

simulator to

START

is

a

general confidence check

but

is

the

software

intended

to

provide a general confidence check in

version

applicable.

functional check procedure, proceed

to

the

unit

and ensure

ON

on

key

the

on

that

next page.

the ECG connector

key and ensure that

the

key and wait approximately

SERVICE

of

the

to

the

green

the keyboard. Ensure that

on

the side panel and switch on.

three

indicated leads are printed and are

10

seconds for

commence. Ensure that the printout is accurate and of good

SCHILLER

HANDBOOK

unit after

becaniedoutwithdedicated

basic

functions. Emore operating

as

follows:

mains

LED

quality.

AT-i

3-Channel

Issue

an

internal module

all

the major

lights.

the

LED

lights

the

printout

3

Sevrember

to

or

AT-

the

of

ECG

Unit

I999

i

I

7.

Switch the unit

the

battery.

8.

Disconnect

unit

on

the

battery

off

and leave connected to the

the

mains and

switch

the

unit on. Ensure that

battery power for approximately

has

limited capacity (not before

mains

supply for

an

hour. Ensure that the battery

45

minutes).

the

10

Battery

hours

LED

or more

is

lit.

LED

flashes when

to

charge

Run

the

Page

3.4

SCHLLER

SERVICE

HANDBOOK

AT-I

3-Cmi ECG

Issue

Unit

3

September

1999

Fault

Diagnosrr

and

Check

Chapter

Procedures

3

Printer

To To

A

lead

Carefully examine the printout and ensure print-head pixels will be seen

Ifafaultypixelis detectedtheprintermust bereplaced. Iftheprintout isuneven (forexampledarker at

is

been

quality.

IMPORTANT:

Print Head Alignment

Check

check

the

printer and to ensure

carry

out

the

printer check press:

test printout is given.

arrow

keys

A

up

the

top

than

at the bottom),

too

faint

or

too

dark.

exposed

to

light for a long period, or poor quality paper can

that

every pixel

ALT

Four

test patterns are avivslliable - toggle between

or

down.

as

a horizontal white line. Examine the printout for evenness of

it

indicates

check the

suobe

adjustment:Also

THE

'SHELF

INDEFLNlTE.

STORED THAT

ADVERSELY

IN A COOL

HAS

and

Print

BEEN

LIFE'

OLD

EFFECT

is

operational, a built-in printer test is provided.

-

-MAP4

chat

that

START

all

the

lines

the printer alignment is not correct.

check

OF

TIE

PFUNTER PAPER

PAPER, PA4PER

DAMP

FREE

EXPOSED

Head

TO

THE

QUALITY

Tension

the

test

patterns

with

the

are even and unintempted. Any faulty

print

If

the

printout

the

paper: old paper, paperthat

all

adversely effect

IS

NOT

THAT HAS

ENVIRONMENT,

LYCESSIVE

OF

THE

NOT

HEAT

PRINT

BEEN

OR

CAN

has

the

print

PAPER

The

print head tension

two

spring exerting pressure

print

head

alignment

is

not correct change the paper

(the

pressure that

on

the print

is

fxed and cannot be adjusted. If the print head tension or print

the

print head exerts

head:

the print head tension cannot be adjusted.

uay

and printer assembly.

on

the

printer paper)

is

achieved

with

Similarly

head

Page

3.5

Chapter

Fault

Diagnosis

AT-I

3

and

Check

Procedures

SERVICE

SCH1LLE.P

HANDBOOK

3-Chel

Issue

3

ECG

September

Unit

I999

I

i

Page

3.6

SCMLLER SERVICE

HANDBOOK

AT-1

3-Channel

Issue

ECG

3

Unit

September

1999

Module

Removal

Chapter

and

Replacement

4

Module

Introduction

Warnings

Physical

Test

Opening

Exploded

ECG

Control and

Battery Paper Paper

Keyboard

and

Cautions

Overview

Equipment,

the Case

view

Intel.face

Tray

Board

Power

Pack

Assembly Assembly

Tools,

Removal

Contents

and

Accessories

IMK

11 - 2

Supply

Board

LMK

11-1

and

Thed

and

Thermal Printer

Printer

und

Chapter

4

Replacement

4.3

4.4

4.5

4.6

4.7

4.9

4.10

4.11

4.13

4.14

1.15

4.16

Page

4.1

Chapter

Module

4

Removal

and

Revlacement

m

BASE

ASSEMBLY

To:

I

,

I

SCHILLER

SERVICE

A-

WDBOOK

I

AT-I

Issue

I

3-Channel

3

Seutember

ECG

Unit

I999

ASSEMBLY

MmOR

I

i

AND

!NTOP

j

1

I

i

I

1

I

ECOINERFACE

I

CONTROLAM)

TOwERSUPPLY

SOARDMKII-1

ASSEMBLY

TO

ACCESS

1

I

i

MAINSTRANSFORMER

AND

CONNECTOR

AND

CONNECTOR

r------

I

Page

4.2

Note:

The

Program

EPROM

is

mounted

on

the

Control

and

Power Supply

boardMK

11-1.

SCHILLER

SERVICE

AT-I

3-ChanneL

HcWDBOOK

Introduction

This

Chapter

spared

at

service

containing

The prerequisites

Tools

and equipment

the

functional

ECG

Unit

Issue

3

September

provides

the

an

level.

The

following:

that

overview

must

that

checks and adjusrments

1999

of

the procedures

instructions given

be

t'uIlX.kd

before removing

in

to

rewve and replace the modules

this

chapter

are required to remove and replace

are

autonomous,

the

module

the

Module

Removal

with

each module

and

that

module and to carry out

Chapter

Replacement

are

4

Removal

Procedures

Replacement Procedures Checks and

Any

adjustments.

a

procedure,

In-text diagrams support

points

and adjustment potentiometers.

Tests

are

detailed

that must

jumper

be

carried out after replacement.

settings, special checks or functional procedures in

the relevant step.

the

text where required

and

provide location details

Specificwarningsandcautions are given where applicable. could cause personal

injury.

Cautions

indicate areas

that

are

required

of

connectors, test

during

Wamingsindicatepotentialdangerthat

could cause damage

to

the equipment.

Page

4.3

Chapter Module

4

Removal

and

Renlacement

SERVICE

SCHILLER

HANDBOOK

AT-I 3-Chnnel

Issue

3

September

ECG

Unit

I999

Warnings

BEFORECOMMENCINGANYREMOVAL.

THAT THE

CABLE

CERTAIN CHECKS

TOP

ASSEMBLY

OUT

THESE PROCEDURES BEWARE THAT POTENTIALLY

ARE

PRESENT.

THE AT- 1 CONTAINS STATIC ANTISTATIC PRECAUTIONS:

0

WHEN

THE

UNlT

and

Cautions

MAINS

IS

REMOVED.

CARRYING

ON

AN

OR REPLACE"TPR0CEDURES

POWER SUPPLY

AND

ADJUSTMEjS

REMOVED

AND

IS

SWITCHED

CAN ONLY BE CARRIED

WJTH

MAINS

CAUTIONS

SENSITIVE

OUT

ANY

MAINTENANCE PROCEDURES ALWAYS PLACE

EARTHED A"ISTATIC MAT.

OFF

AND THAT THE

CONNECTED.

CMOS

COMPONENTS;

OUT

WHEW

LETHAL

ENSURE

MAINS

WITH

THE

CARRYING

VOLTAGES

OBSERVE

I

0

PERSONNEL MUST BE EARTHED

COMPONENTS

0

ALWAYS USE

COMPONENTS THE

UNlT

IS

ALWAYS

OUT

TAKE

ISNOTCIUMPED

THE CABLE ASSEMBLY.

CARE MUST BE TAKEN NEVER USE FORCE.

THE PROCEDURAL THE

PLACETHE~ONASOFT,~ON-ABRASIVECLOTHWHENC.RRMNG

MVIAINTENt-WCE PROCEDURES.

CARE

REMOVING THE TOP ASSEMBLY.

ORDER

AN

ANTISTATIC BAG

SUSCEPTIBLE TO ABRASION DAMAGE. TO

NOT

TO PLACE hNY

ORTWISTED

INEVER

STEPS

GTVM.

ANDTHATTHETOP hSSEMBLY ISNOTPLACEDON

WHEX

STRAIN

GIVEN

WHEN

HANDLING

WHEN

TRANSPORTING BOARDS

PREVENT

STRAIN

REMOVING

FOR

ON THE CONNECTING RIBBON CABLE

ENSURE

THE CABLE ASSEZUIBLIES.

EACH MODULE MUST

THAT THE CABLE ASSEMBLY

.W

REPLACING CONNECTORS.

ANY

BOARDS

SCRATCHING.

BE

FOLLOWED

OR

LN

Page

4.4

SCHILLER

SERVICE

WD30OK

AT-I

3-Channei

ECG

Issue

Unit

3

September

1999

Module

Removal

Chuprer

and

Replacement

4

Physical

The

the

The electronics

boardMK

supports

The

spacers.

Thethe~pnnterismountedonapapernay/thermalprinterassembly

section complete. Because

screw

Overview

AT-1

unit

is

enclosed

top

part

contains

thermal

pnnter,

of

the

11-1,andtheECGinterface boardm

the

patient connector.

battery

is

secured

of

the plastic construction

fuirlgs.

in

a

the keyboard

the

paper

unit

are

in

position

two

tray,

contained

The

with

part

medical

with

the

battery

on

PCBs

are

double

of

the

case,

standard.

base

section

and

mains

two

printed

11-2).TheECGAmplifierboardMR

secured

sided

moulded plastic case.

containing

transformer.

circuit

boards

on

tape

spacers

and

the

mains

moulded

all

the

elecmnics

(control and

in

transformer

whichissecuredinthe base

threaded

metal

inserts

are

used

of

power

the

base

section.

is

secured

throughout

the

unit.

supply

11-2also

on

for

all

Page

4.5

Chapter

Module

4

Removal

and

Replacement

SERVICE

SCHILLER

AWVDBOOK

AT-I

3-Channel

Issue 3 September

ECG

Unit

1999

Test

Equipment,

The

following

fnnctional

test equipment given here

please contact the

*

Digitalvoltmeter

*

Selection

*

Cleaning

*

Selection

*

Double-sided

*

ECG

list

tests. calibration procedures

SCHILLER

of

cross-bladed. posi-drive

agent such

of

spanners

tape

Patient

Simulator

Tools,

details

the

is

general.

as

Tricoetholine

and

tools. test

If

service

department.

Accessories

equipment

and

adjustments

specific

and

flat-bladed screwdrivers

and

accessories

that can be carried out

recormnendarion

required

for

test equipment

to

on

carry

the

AT-1.

is

required,

out

all

The

‘I

r,

Page

4.6

SCHlLLER

SERVICE

HANDBOOK

AT-I

3-Channel

Issue

ECG

3

Unit

September

1999

Module

Removal

Chapter

and

Replacement

4

Opening

Prerequisites

The umt must be placed mfenance

28

THE

BE

Tools

Posi-drive screwdriver

Test

The

following

ScHlLLER

Patient Simulator e.g. phantom

Top

The Top Assembly

six

screws:

Assembly,

the

Case

IS

cmed out

degrees.

WARNINGS

OBSERVED.

Equipment

test equipment

Patient Cable

Assembly

access

proceed

Removal

is

to

as

on

an

antlstauc

on

the

AT-

1.

AM)

CAUTIONS

is

mounted

required

on

to

320.

'

the Base Assembly and

the screws is gained

follows

mat

and anusmc precautions observed when any

The

room

temperature should be between

AT

THE

BEGINNING

carry out the functional test after

from

the underside

is

secured

OF

THE

CHAPTER

unit

to

the Base Assembly with

of

the

unit.

To remove

18

and

&MUST

assembly

the

Top

WARNING:

ENSURE

1.

Turn

the

unit

upside-down and rest

2.

Unscrew and remove rhe six countersunk retaining screws and washers situated extreme corners and edges

3.

Grasping

carefully

5.

Release

6.

Gently

from

7.

Disconnect the cabie assembiy between the the

the top and bottom

return

the

catch

lifl

the

Top Assembly and

the paper tray

keyboard.

the unit

and

THAT

THE

it

on

of

the

unit.

of

the

unit

to

the

standing

open the paper tray lid

turn

lid.

MAINS

a

soft

antistatic cloth.

to

ensure

CABLE

thar

the

IS

REMOVED.

two

assemblies cannot part,

position.

with

the printer roller.

it

slightly counter-clockwise so

Controi

and

Power Supply board

it

in

the

can be lifted away

MK

11-1

and

7.

Place the Top Assembly

on

a

soft cloth.

Page

4.7

Chapter

Module

4

Removal

and

Replacement

SERWCE

SCHILLER

HWDBOOK

AT-I

3-Channel

issue

3

September

ECG

Unit

I999

Opening

Top

replace

To

Check

1.

that no screws or foreign bodies are loose

Inspect

2.

no visible damage can be seen. caught.

Ensure

3.

Position

4.

cable, plug bOXdMK

Note: It may

Turn

5.

Carefully position the Top Assembly on the Base Assembly and close the paper tray

6.

7.

Grasping

down and replace

the

case

Assembly

the

that

the

unit.

Replacement

Top Assembly proceed

alI

boards

and components

all

the

internal cable assemblies and ensure that they

all

connectors are firmly

the

Top Assembly in

in

the interconnecting cable

11-1.

be

necessary

Top Assembly slightly counter-clockwise and lift

the

two

assemblies

the

six securing screws and washers

Return

the

unit to

the

as

follows:

are

fly secured. Check for loose screws. Ensure

in

Ensure

that

home.

front

of

the

Base Assembly and without

from

to

tilt

the

Top

Assembly for the cable assemblies

to

ensure that they cannot

upright position.

the

bottom

of

the

are

no

cable assemblies are

the

Ktiyboard to the Control

it

over the paper tray

part,

carefully

in

the

extreme corners and edges

case.

in

good condition and that

strained.

crushed or

straining

and

tum

the

Power supply

to

reach.

unit

ribbon

lid.

upside-

!

I

i

of

Cany out

8.

the

functional check procedure

detailed

in Chapter

3.

Page

4.8

SCHILLER

SERVICE

HANDBOOK

AT-1

3-Chunnei

Issue

ECG

3

Unit

September

I999

Module Removal

and

Replacement

Chapter

4

Exploded

L

View

t 1

,

PZandP3to Keyboard

I

\

I

\,

1,

//

P

4

to

Prmt

Head

P6audPt to

the

printer

Motor

and

MadcDetector

Paper

respeaively

Stepper

the

P5tO

ECG

Amplifier

procesSor

part

j

?ewer

supply

part

BUCK

Ba=Y

Connectors

Page

4.9

Chapter

Module

4

Removal

and

Revlacement

SERVICE

SCHILLER

WDBOOK

AT-1

3-ChaMel

lssue

3

Seprember

ECG

Unit

1999

ECG

Interface

The ECG Interface

to

six

spacers.

Board

is

mounted above the Control

iMK

Prerequisite

The

Warnings

The

Top

Took

Cross-bladed posi-dnve screwdnver

and Cauuons at

Assembly

and

Test

the

must

be

removed

Equipment

beginning

Parts

ECG

Amplifier board.

Board

THE

ANTISTATIC PRECAUTIONS.

To

1.

Removai

ECG

AMPLIFIER

remove Unscrew

the

Part

number

CONTAINS STATIC

ECG Amplifier proceed

six

screws

securing

11-

2

and

of

the Gapter

and

all

external cable assemblies disconnected.

as

detailed in Chapter

CAUTION

SENSnIVE CMOS

as

follows:

the board to

the

Power Supply boardMK

must

be

observed.

6.

COMPONENTS. OBSERVE

spacers.

11-1

andis secured

2.

Gently

raise the board

the

connector. Remove

Board

1.

2.

Checks

To

Switchon patient printed.

Replacement

Place the ECG Amplifier board component side down over cable assembly to the Conrrol board connector

Secure the board to the

prove

is

and

Tests

the

integnty

the

unit

simulator

positioned

to

gain access

the

board.

in

the cutout

six

spacer supports

to

the cable assembly

MK

1-1

1.

Place

on

the

side panel.

with

the

after Repiacement

of

the repaced board carry out the following functional

andconnectaSCHELER pauentcable to theECGconnector. Connectasuitable

io

the

ECG connector

and

press

'MAN

to

the

Control board and remove

the

six

spacers and connect

the

board

so

that

retaining screws.

START.

Ensure that

the

patient cable

check

all

the

procedure:

the

leads

are

Page

4.

I0

SCHILLER SERMCE

HANOBOOK

AT-1

3-Channel

Issue

ECG

3

Unit

September

1999

Module

Removal

Chapter

and

Replacement

4

Control

TheConuolandPowerSupplyBoardMK!l-1

ECG

Prerequisite

Tools

Pod-drive screwdriver

Parts

Control and Power Supply board

Board

ENSURE

and

Interface

The

Warnings

The

Top

The

ECG

and

Removal

Power

MK

and

Assembly

Interface

Equipment

THAT

THE

Supply

11-2.

Cmions

must be removed and

must

MAINS

at

the beginning

be removed

MK

CABLE

Board

issecuredtothe base

of

all

external cable assemblies disconnected

11-1.

Part

number

WARNING

IS

DISCONNECTED

IMK

the

11-1

Chapter mst

as

detailed in Chapter

trayandpositionedunderthe

be

observed

6.

BEFORE

COMMENCING

To

remove

1.

Disconnect the following connectors:

*

.

2.

Unscrew the nine spacer

the

Control

live and the neutral bayonet connectors

and

live

data

connector

paper printer

ground connector to the note: (the power supplies connector

removed

and

Power Supply board

the neutral bayonet connectors

to

the thennal

mark

connector

motor

connector

as

detailed

in

tixauons

MK

11-1 proceed

to

the

mains

to

the battery

pnnter

pnnt

head

to

the

ECG

the previous paragraph).

(four

on

the

mns

transromer)

as

follows:

connector

Amulifier will already have been

and

remove the board.

Page

4.

I1

Chapter

Module

4

Removal

and

Replacement

SERVICE

SCHILLER

HANDBOOK

AT-i

3-ChaMel

Issue 3 September

ECG

Unit

1999

1

Control

Board

To

1.

2.

3.

and

Power

Replacement

replace

the

Position

COM-

the

live

data

paper

printer

ground

Replace

the

Supply

Control

and

Power

board

and

secure

following:

the neutral bayonet connectors

the

neutral bayonet connectors

connector

mark

to

the

connector

Board

Supply

at

the

nine

thermal printer

motor connector

connector

ECG

to

Amplifier

the

print

(detailed

board

fig

head

in

the

L'MK

MK

11-

points

to

the

to

the

1

proceed

(

four

on

mains

connector

battery

paragraph)

(cont.)

as

follows:

the

mauls

and

reassemble the

transformer)

unit

Page

4.12

SCHILLER

SERVICE

HANDBOOK

AT-I 3-CitMnei

issue

ECG

3

Unit

Seprember

I999

Module Removal

Chapter

and

Replacement

4

Battery

Pack

The battery pack

is

held

in

position

with

double sided

tape.

Prerequisite

The

Warnings

The Top i\ssembiy must be removed and

I

and Cautions

at

the begmmng

of

the Chapter must

all

external cable assemblies disconnected.

be

observed.

Parts

The

part

numbers

of

all

replaceable items

are

given

in

Chapter

6.

Battery Pack Removal

WARNING

THE

MAINS

To remove the Battery Pack proceed

1.

Ensure that the

2.

Disconnect the away

from

SUPPLY

unit

two

the

base.

MUST

BE

is

switched

DISCONNECTED

as

follows:

off

and that the

DURING

mains

THlS

is

disconnected.

PROCEDURE

bayonet connectors and remove the Battery Pack by gently

pulling

Battery Pack Replacement

1.

Position

2.

Remove the double-sided tape protective sheet and secure

3.

Connect bayonet connectors.

Checks

Program

the Battery

and

Tests

all

static settings which

Pack

After Battery Repiacement

with

the connectors towards the inside

will

have been

lost

when the battery was disconnected.

of

the

unit.

the

Battery Pack to the base.

Page

4.13

Chapter

Module

4

Removal

and

Replacement

SERVICE

SCHILLER

HANDBOOK

AT-1

3-Channel

Issue

3

ECG

September

Unit

I999

Paper

Prerequisite

Tools

Part

The part numbers for the Chapter

THE

PRECAUTIONS

Tray

Assembly

The

Warnings

The Top Assembly

must be disconnected.

Cross-bladed screwdriver Flat-bladed Rat

ended

and

Cautions

must

screwdriver

pliers

Numbers

6.

THERMAL

PRINTER

and

at the beginning

be removed

Thermal

CONTAINS

Thermal

as

detailed previously.

Printer

Assembly,

CAUTION

IS

STATIC

Printer

of

the Chapter must

the

print

SENSI'ITW

be

observed

All

external cable assemblies

head

and

the motor are given

OBSERVE

ANTISTATIC

in

CWWHEEL

(4.

430

118)

AND

ROLLER

BEARING

(4.

CO

168)

PRINTHEAD

4.

143 115

I i

i

Page

4.14

SCMLLER

SERVICE

hkVDBOOK

AT-I

3-Chl

ECG

issue

Unit

3

September

I999

.Moduie

Removal

and

Replacement

Chapter

4

Paper Tray Assembly

PrinterRaper

1.

Remove

data

paper pnnter motor connector

ground connecfor to the print head

2.

Unscrew the four retaining screws and remove the complete paper tray/printer assembly.

Thermal Printer Removal

1.

Turn

the

screws.

2.

Gently remove the printer taking care

Thermal

To

replace

1.

Position

slot

into

that

the

strained.

tray

Assembly Removal

the

followng connectors from the

connector

mark

Paper my/printer assembly upsidedown and unscrew the

Printer

the

Thermal Printer proceed

the

Printer in the paper tray/print assembly

the dedicated cutouts

cable assemblies from

to

connector

Replacement.

and

the thermal printer

Thermal Printer

to

retain the

as

follows:

in

the

assembly: secure

the

printer to the Interface PCB

Control

and Power supply board

two

pnter

two

tensioning screws.

so

that

the

printer mounting plate

with

the two retaining screws.

are

not caught and are

h4K

11-1

retaining

:

lips

Ensure

not

2.

Using a suring compressor. insert positioned over the moulded spring supports and mounting plate.

the

two

tensioning springs

in

PrinterPaper tray Xssem bly Replacement

1.

Position and secure

2.

Reconnect

3.

Replace the

Checks,

Check

the

data

paper printer motor connector ground connector

Tests

pnnt quaiity

connector

in

the

base

the assembly

following connectors to the

to

the thermal printer

mark

connector

to

the print head

Top

Assembly.

and

Adjustments after Printer

as

descnbed

in

Chapter

with

Contlol

3.

so

that the springs are

the

indent (hole) in the printer

the

four

retaining screws.

and Power supply board

Replacement

iw(.

11-

1

:

Page

4.15

Chapter

Module

4

Removal

Keyboard

The

keyboardcomes

keyboards

and

Replacement

are

given

as

acomplete

in

Chapter

assembly

6.

with

the

SERVICE

top

casing.

SCHlLLER

HANDBOOK

The

parts

AT- I 3-Cltannei

Issue

numbers

ofthe

ECG

3

September

various

Unit

I999

f

Page

4.

I6

SCHLLER

SERMCE

HANDBOOK

AT-I

3-Ciuuulel

Issue

ECG

3

Unit

September

1999

Chapter

Adjustments

5

Introhction

Warnings, Test Equipment Test Setup Control Board

Battery

ECG

Service

Sofhyare

Cautions

Chruge

Amplifier

Ampiifir

Printout

and

Settings

and

Conditions

MK

I1-1

Component

VoUage

+ZV,

-2V

and

PWM

reference vohge

Contents

Location

Ramp

Time

Adjustment

Chapter

5

Adjustments

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

5.10

5.11

Page

5.1

Chapter

Adjustments

5

Introduction

This

Chapter procedure equipment necessary.

required

In-text

points

is

on

diagrams

and adjustment potentiometers.

SERMCE

provides

self-contained

the

the procedures

and

Any

adjustments.

necessary

details

the tools required

jumper

to

check and adjust

settings.

special

module. or on associated modules or software. xe

support

the text where required and provide location deas

SCHILLER

HANDBOOK

all

to

carry out adjustments, and

checks

or

also

demied

AT-I

service settings. Every functional

of

connectors,

3-Ciuuutel

Issue

tesrs

3

September

the

test

that

are

test

ECG

Unit

1999

Specific

The

part

The

AT-1

Battery

ECG

2)

We

recommend

warnings

numbers

has

the

Charge

and

cautions

for

all

replaceable

following

Voltage

are

adjustments:

(VR4

on the Microprocessorflower

Amplifier reference voltage

that

the

refenmce voltages

given

modules

and

in

rhe text where applicable.

are

given

in

Chapter

(VR3

and

VR3

on

the ECG Amplifier

are

checked

every

year.

6.

supply

Board

MK

Board

11-1)

MK11-

,

Page

5.2

,

SCHILLER

SERVICE

AT-i

3-Chmi

IteVDBOOK

ECG

Issue

Unit

3

September

1999

Chapter

Adiusrmenrs

5

Warnings,

I

iMAINS

DISASSEMBLING THE DISCONNECTED

CHEcz(s.

THE AT-1

PRECAUTIONS. PLACE THE EARTHED ANTISTATIC BAG

CARE

USE

THE ORDER

Cautions and Conditions

POWER

OR

CONTAINSSTATIC SENSmCMOS COMPONENTS;

WHEi'i'

MUST

FORCE.

PROCEDURAL

GIVEN.

WARNING

IS

POTENTIALLY

UNIT.

BEFORE

ADJUSTMENTS.

CARRYING

LETHAL

ADDITIONALLY

OUT

-

DISCONNECT

M

ENSURE

MA"

THE

MAINS

THAT

THE

ANCE. CALIBRATION,

BEFORE

MAINS

IS

CAUTIONS

OBSERVE

WHENCARRYINGOUT~MAIN~ANCEPROCEDURESALWAYS

UNIT

ON

XN

HANDLING

WHEN

BE

TAKEN

NEVER

EARTHED

TRANSPORTING

WHEN

STRAIN

STEPS

THE

GIVEN

ANY

RFMOVING

ANTISTATIC

BOARDS OR COMPONENTS.

BOARDS

I-WD

CABLE

FOR

ASSEMBLES.

EACH MODULE MUST BE

MAT.

OR

COMPONENTS

REPLACING

PERSOIWEL

CONNECTORS.

FOLLOWED

ANTISTATIC

WAYS

MUST

USE

NEVER

IN

BE

AN

THE

OUTER

PREVENT

Conditions

The

unit

must

matntenance

The

room

temperature should be between

SURFACES

SCRATCHING.

be

placed

is

camed

OFTHEAT- 1 ARE SUSCEPTIBLETO ABRASION DAMAGE.

on

out

on

ALWAYS

an

antlsrauc

the

AT-

i.

PLACE

ma1

I8

and

ON

A

SOFT.

NON-ABRASTVE CLOTH.

and

anustauc precauuons observed when

28'

C.

TO

any

Page

5.3

Chapter

Adjustments

5

SERVICE

SCHXLLER

AT-I

HANDBOOK

3-Channel

Issue

3

ECG

September

Unit

1999

Test

Equipment

The

following

board

checks

The

list

test equipment can

Proprietary

0

ECG

0

Oscilloscope

0

DigitaiMultimeter

0

Standard

pliers

0

ScHlLLER

proprietary

and

adjustments

of

proprietary

Test

Emulator,

tool kit

and general tools

10

and

dedicated test

on

rhe

equipment

be

obtained

is

from

not

EquipmenUToois

e.g. Phantom

with

lead

patient

a

seiection

cable Number

320

equipment

AT-1.

is

required

to

fault

comprehensive. Recommendations

the

SCHILLER

of

cross-bladed,

Service Deparrment.

flat-bladed

2.400070

(2.

and

jooO71

posi-dtive

for

frnd

and

carry out

of

suitable proprietary

screwdrivers,

USA)

all

Page

5.4

SCHILLER

SERVICE

HANDBOOK

AT-

I

3-Channei

ECG

Issue

Unit

3

Seprember

1999

Chaprer

Adjustments

5

Test

Setup

Page

5.3

Chapter

5

Adjustments

SERVICE

SCHIW

AT-I

HANDBOOK

3-Cha~meL

Issue

3

ECG

September

Unit

1999

Control

3oard

MK 11-1

TP??

Component

BATERY

VOLTAGE

.'

b

Location

CHARGE

(VR4)

I

SI2

EATERY

CHARGE

1.5

A

slow

NSE

Page

5.6

SU

5.2

1

I

V

FUSE

him

SCHILLER

SERVICE

WDBOOK

AT-1

3-Chmel

Issue

ECG

3

Unir

September

1999

Chapter

Adjustments

5

Battery

Precautions

The mmtenance

Took

Procedure

The

5

Charge Voluge

and

Requirements

unit

must

be

placed

on

m

anastatic

is

cam&

out

on

the

.AT-

and

Equipment

Digital voltmeter

SmaU

flat

bladed screwdriver

Resistor

batterychargevoltageisnominally

mA).

DISCONNECT Disassemble the unit Remove

two

multimeter

2.7

kOhms.

Adjust and check as

50

THE

iWS

as

the

two

battery connectors and connect

connectors

(TP12

across

the resistor.

mW

follows:

SUPPLY

detailed

and TP13)

mat

and antistatic precautions observed when

1.

The

room

temperature should be between 18 and

13.5

V(withanominal~rncurrentofappro~e1y

in

Chapter 4 and remove the

a

2.7

to

simulate a discharged battery. Connect the

kOhm

ECG

250

mW

Amplifier

resistor

MK11-2.

across

digital

any

28O

C.

the

Connect

mCISECARE-

Adjust Disconnect

the

VR4

Mains

to

obtain a charging voltage

the

mains

supply.

WARNING

BE

AWARETHATPOTENTIALLYLETHALVOLTAGES

of

13.5

V.

supply

and

reassemble the

unit

as

detailed

in

Chapter

AREPRESENT

4.

Page

5.7

Chapter

AdjurmKtS

3

SERVICE

SCHILLER

1Lt4NDBOOK

AT-I

3-Ch~nneL

Issue

3

ECG

September

Unit

1999

ECG

Amplifier

The

z2

V

voltage ra& generated

measurement

Note: The

THE

3V

AT

THE

Tools,

Digital voltmeter

Small

Procedure

DISCONNECT

Disassemble

Remove

side

the

and

ECG

checked withour disassembling

later

in

REFERENCE

SAME

Equipment

flat

bladed screwdriver

the

screws securing

of

the

unit

top assembly

t2

K

-2V

and

on

PWM

(Pulse

Width

board reference voltage

rhrs

chapter.

VOLTAGES,

TIME.

and

Material

THE

iMAINS

the

unit

as

component side

on

its

detailed

side

in

SUPPLY

the

uD.

front

P

WM

the

ECG

Modulauon)

is

given

the

umt

.WD

THE

in

Chapter

ECG

Reconnect

4

Amplifier board

of

the Base assembly

Ramp Tt’me

Xmplifier

cmuits.

on

Full

PWM

the

keyboard

board

the

service pnntout and can be

demls

RAMP

MKIl-2

are

used

of

the

smce pMtout are given

MUST

BOTH

and gently place by

to

the

control

as

shown below.

Adjustment

as

a

reference by

BE

ADJUSTED

the

board and place

the

I

Remove

the

EMC

shield

I

fron

the

ECG

Amplifier

board

Page

5.8

SCHlLLER

SERVICE

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3-Channel

HANDBOOK

ECG

Issue

Unit

3

Sevtember

!

999

Chapter

Adjustments

5

ECG

Amplifier

Switch

the

unit

2V

reference

achieve a voltage

Obtain

a

service

on

reference

on

and

measure the voltage difference between the

pins

1

and

7

of

operational amplifier

difference

pnntout

of

by

pressing

4000

ALT

voltage

mV

tz

mV.

-

0

-3

-

any

key

U100.

Adjust

+2V

reference

trimmer

VR2

and

to

the

-

Ensure

that

the Udiff

Reassemble

sexvice

reading

ptout.

the

Uref+

is

4000

unit

and

the Uref- measurements are

mV

Adjust

VR3

as

detaled

in

Chapter

to

acnieve

4

Xecheck

00th

3000

a

Udif

reading

the voltage

mV

by

C

20

mV.

of

40o0

agm

Ensure

mV

f

obtauung

20

a

that

mV.

Page

5.9

Chapter

5

Adjusmnts

SCHILLER

5ERVTCc'hkVDBOOK

AT-I

3-Channel

Issue

3

September

ECG

Unil

I999

Service

The Service

of

only.

The

engineer;

obtain

ECG

Printout

prrntout provides

certainreference

service

printout also gives variable settings and measurements

to

carry out these adjustments some

the

service

Ref.

Voltage

voltages

iniormauon

and

important

of

the pauent

cable

internal orfset values. These

of

~e settings require additional test equipment.

printout press the following key sequence:

UT

-

0

-3

-

my

key

This

pmwdes measurements and

for

accurate measurement

oi

ECG

semng

slpnals

faalities

and zlecwdes

chat

values

can

be

and

are

set

gives

for

by

for rhereterence voltage used

the

value

information

the service

To

'.

.

EIecuode dc offset

depend expected are

0

Uref-

This gives the value rnuluplexer cncuit reference voltage

Uref

Udif

-

Thxs

;\mplifier mV

This

-and Uref

uoif

This c'xcuit. This

Calib

This value

This

gives the

voltage

drop

the pauent cable or pauent

leg

the left indicate

zlecmde

any

cable

on

where the elecrroaes are

3s

follows:

and

short

all

cucm

With pauent connec:ed With pauent sirnulator connecred

pauent

simulator used and nust

With

all

zlecuodes shorted together:

of

the reference voltage used

on

the ECG Amplifier. The valueofthe

is

3000

mV

220

is

3

negauve reference voltage sed board.

The

value

of

ths

-30

rnV

is

che

sum

of

[he

:wo

reference values above (Uref

-I.

3s

value must be

1s

'he value

value

is

i000

in

s!ecuode.

other

ts

or

of

vam

snould be

!s

[he

Uuif

5

rne

?men[ ::able

The value given

z!ec'mYeS.

open

CXC'JIIS.

connected.

-

z

10

mV

-

be

difset voltage

in

rhe

.ialue divided

md

is

The measurements

Tne

measured voltage

The voltage rezlings that

z

20

mV

taken

as

-

z

20

mV

in

mV.

on

the

ECG

voltage should

4000

mV

on

range

by

can indicate any fauits

the dc voltage between

-

ths

will depend

3

flexlble measurement.

i

20

the

muluplexer

=

150.

3.

The

obtaned

value

be

-2000

mV.

nomtnal

will

can

on

the

in

be

the

Page

5.10

TPH

Temp

Checksum

This

IS

the temperaturee

This

is

the

No

pauenr cable connected:

or

rhe

EPROM

check

sum.

=

100

mV

rhermal pnnt head.

The

value

my

change arter a software update.

SCHILLER

SERVICE

hWWBOOK

AT-]

3-Channel

Issue

ECG

3

Unit

September

1999

Chapter

Adjustments

5

Software

The

software

The

only

settings

Details

instailing

To

update

Acceptance

MORE

and

option

press

of

all

the

ALT

of

THAN

Settings

version

of

the

available

rhe

following

sertLtgs

Software

- 0 - 4 -

are

AT-1

from.

the code

10

AlTEMPTS

options

followed

is

unit

and

the

options

is

the measurements key sequence:

ALT

given

in

the

AT-I

for

example

indicated

by

TO

standard

the

by

a

ENTER

installed

option:

- 0 - 1 -

User

update

series

an

any

Guide.

to

M

version

code (obtainable

of

beeps.

CAUTION

THE

INCORRECT

are printed

M

is

printed.

key

type

CODE

on

the

bottom

To

obtain a printout

the

following:

from

BLOCKS

of

all

printouts.

Schiller)

THE

of

UNIT

ail

Page

5.1

1

,

Chapter

Adjustments

5

SERVICE

SCHILLER

AT-

HANDBOOK

I

3-Chunnel

Issue

3

September

ECG

Unit

1999

Page

5.12

SCHILLER

SERVICE

HANDBOOK

AT-I

3-Channel

Issue 3 September

ECG

Unit

1999

Chapter

Spare

6

Purrs

ordering

spare

Parts

Information

Contents

Chapter

Spare

6.2

6.3

6

Parts

Page

6.1

Chapter

Spare

Pans

6

SERVICE

SCHILLER

WDBOOK

AT-I

Issue

3-ChanneI

3

September

ECG

Unit

1999

Ordering

Your

local reuresentauve stocks

of

difficulty or

will

be pleased

The

address

SCBILLER

Sales

AItgaSse

(38-6340

Switzeriand

Phone

Fax

When

Part

Your

hfomation

to

obtain

the

to

help process

for advice

Department

68

Baar

Number

1Vumber:

ordering,

Description Number

Address

is:

AG

(Order

MI41

:

MI41

state that the order is for

all

the disposables and accessones available for

address

of

your

order or

Processing)

766

42 42

761

08

80

an

local

to

AT-

dealer,

provlde

1

unit

please contact

any

details for

and provide

the

all

the

following:

the

AT-

head

office.

SCmLER

1.

Incase

Our

staff

products.

Service

If

you

Phone

Far

you

need help

Number:

contact

Department

Number

serial number for software version

accessories

from

our service engmeers, please contact the following numbers:

i4141

:

41

us

by

fax.

be sure

your

AT-

used,

model and cable number.

766 761

to

provide the

1

42

03

85

34

following

infomuon:

Page

6.2

I-

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WDBOOK

TechnicsJ

Available

ECS

Unit

hue

3

September

Data

Con,tiguratwns

&'999

Contents

Chapter

Technical

1.2

7.3

Chpter

Tech

rcal

Da

7

ra

7

Data

Page

7.1

SCHILLER

SERVICE

HANDBOOK

AT-1

3-Chan7wi

Issue

ECG

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Unit

September

I999

Chapter

Spare

6

Parts

Spare

Parts

DESCRlPTION

Microprocessor and Power Supply ECG Amplifier Board MK Paper Mark Sensor Board

AT-1

Software

Bottom

Top Housing Top Housing Top Housing

Top Housing

(Prugrammd

Housing Complete

with

Keyboard Complete

with

Keyboard Complere (English)

with

Keyboard Complete

with

MIS

Keyboard Complete (French)

Keyboard Complete (Portuguese)

Paper Tray and Printer Assembly Complete Paper Tray Lrd

11-2

11-5 1

EPROM)

Board

(German)

(Spanish)

MK

11-1

PART

NUMBER

3.

24

20

3.2421

3.

24

23

4.999

940

3.910 960

3.910 961

3.910 962

3.910 963

3.910 964

3.910 965

3.910 966

3.910 967

2

103,Cy

-

C04G

Ground Shield

Transformer Shield

ECG Isolation Shield

Mains

Socket Complete

Mains

Fuse Holder

Mains

fuse

-

2OOm/AT

Mains

Transformer

12V

Lead

Acid

Bmery

Printer Motor Comulete

Pnnt

Thennal Thennal Print

Head

Cable

Printer Roller

Potential Equalisadon Stud

4.416 028

4.

416

027

4.435 198

4.

270009

4.210

049

4.210 010

066

4.320

4.350 024

4.330 019

1.

140

115

4.520 378

4.

410 181

4. 260 377

Page

6.3

Chapter

Technical Data

7

SERVICE

SCillLLER

kWVDBOOK

AT-1

3-Channel

Issue

3

ECG

Unit

September1999

Y

Technical

Dimensions

Weight:

Mains

Battery:

Power

LtZId.5:

Paper

Sensitivity:

Chart Paper:

printing

Recording

Data

data

subject

(yw/h):

Supply:

Consumption:

Speed:

Process:

Tracks:

to

change without notice.

290

x

210

x

69

mm

2.9

ke

~ ~~ ~~ ~ ~~ ~~

100 to

115

/

220

to

340

VAC,

50160

Hz

Bullt-in

Recording:

Standard 1 Cabren

5

manually selected Themoreactive

-

High-resolution

3

automatic baseline adjusrment

12

V

!ead-acid battery (rechargeable)

7-8

VA

max.

/10

I

20

mm/mV,

2-folded,

Roll,

channels, positioned at optimal width

either automatically adjusted or

90

mm

wide, perforation

90

mm

wide

(only

on

certain

thermal

print head 3 dots per

90

markets)

on

80

mm

mm.

or

I

Auto

matic

Data

Record:

ECG

Storage:

Frequency

ECG

hmpiifier:

Myogram

Filter

Lead

Programs:

Range

(musde

of

Digital

Recorder:

tremor

filter):

3

channel representation

standard

-

Version

ECG

axes),

rqerence

-

25

waveform). The stored without filter.

leads

~~ ~ ~~~ ~~ ~ ~~

Listing

of

IM:

measurement

uverage

Hz

or

complexes

markings.

Memory for Circular input memory for

0

to

150

HZ.

i)

to

150

HZ

Simultaneous, synchronous iegstration

3

active elecuode signals

Sampling frequency:

Digital

resolution:

Dynamic range:

Max.

electrode potential: Time constant: Frequency response:

Input impedance:

35

Hz.

programmable

of

ECG

recording data

results

10

s,

12-lead ECG

(EC)

(MA)

ECGs

12

simultaneously acquired

(intervals,

with

optional rneasuremenr

1000

5

,uV

210

>3.2

0.05

>I0

(not

can be printed with or

amplitudes,

10

s,

12-lead ECG.

(=

12

standard leads)

Hz

mVAC

5300

s

to

150

Hz

MR

active

mVDC

(-3

on

averaged

electrical

of

all

dB)

I 1 I

I

Page

7.2

Line

Frequency

Filter:

Distortion-free suppression sinusoidal interferences by means filter.

of

superimposed

of

an

adaptive

50

or

60

digital

Hz

I I

SCHIUR

SERVICE

HANDBOOK

AT-I

3-Channel

Issue

ECG

3

September

Unit

1999

Chapter

Technical

7

Data

Technical

Patient

Safety

Standard.

Safety

Class

Environmental Conditions:

Contrd

Available

The

CARDIOVlT

Standard Version: Version

Version

Data

Input:

Leakage

Panel:

Configurations

M:

C:

Current:

AT-

1

is

available

Fully floating and isolated, defibrillaaon protected

duA

BF

I

Temperature, Operating: Temperature. Relative Atmospheric pressure:

Rubber keys.

in

two

different versions:

Unit Unit

Unit NOTE

CERTAJN

according

to

Storage:

humidity:

with

ECG

with

additional

with

measurement

!

:

THIS

COUNTRIES.

to

IEC

601-1

IEC

501-

recording

ECG

VERSION

and IEC

10"

-

25

700

and

601-2-25

to

40"

C

10"

to

5.5"

to

95%

(non

to

1060

printout capabilities.

measurement

program

IS

ONLY

(M)

and interpretation.

MARKETED

C

condensing)

hPa

program.

IN

Page

7.3

Chapter

7

Technical

Daxa

SERVICE

SCHLLER

AT-

hWVDBOOK

I

3-Chnel

Issue

3

ECG

September

Unit

I999

Page

7.4

SCHILLER

SERVICE

iWVDBOOK

AT-1

3-Channel

Issue

ECG

2

Unir

JuLV

I998

Chapter

Glossan.

8

Introduction

Acronym

Contents

Chapter

Glossary

8.2

8.3

8

Page

8.1

Chaprer

8

Glossary

Introduction

The

following

diagrams

Only

and electronic

for

abbreviations

list

provides

the

SCHILLER

that

are

abbreviations

a

glossary

instnunens.

specific

are

not

of

the

They

to

SCHILLER

included.

important

will

not

equipment

signals

all

appiy

are

SCHILLER

SERVICE

and

acronyms

to

the

included

AT-I

HANDBOOK

used

in

AT-

1.

here.

General

3-Channel

ECG

Issue 2 Julv

the

circuit

electrical

Unit

I998

Page

8.2

SCHILLER SERVICE

AT-1

3-Clmnel

IteVDBOOK

Acronvms

ECG

issue

2

Unir

July

1998

Chapter

Glossary

8

..os

A(

1

..d

ALBEEP

ANAL

AS BAT"

BA?TLC

BAW

BLOW

CHNI

CIF(0..16)

ANA2

..

Offset signal ion the ECG amplifier)

CPU

Address

Alarm

signal is about

Analog

Address

Signal

Analog

bactery. Battery voltage

processor Battery less

the battery voltage drops switched od These values apply other equipment the

ECG

signal multiplexer control signals (on the

Communication interface. General conmi signals for communication interface circuits.

Bus.

beeper

signal

to

the audio amplifier. The frequency

1000

Hz.

input from

strobe

to

CPU indicaring battery operation

signal

to

the

expeximentai inputs

to

the processor giving the charge condiaon of the

-

analog signal from the power supply

assess battery or

than

113.

Limits

mains

operation.

LCD

flashes when

to

below approximately

to

equipment with

are

different.

DC1

and

this

signal is active. When

9.4V

ECG

of

DC3.

used

by the

the

unit

12

V

battery. For

Amplifier)

the

this

is

CI(O..lO)

CO(O..lO)

1

CL CL2 CLK..

cs..

CTS D

(0..15)

DACWR

DIO..

DMUX

DWV

RS

interface control lines - input.

RS

interface control lines - output.

19

kHz

LCD

latch

pulse.

3.1

1

MHz

LCD

clock frequency.

Clock Signal. The number following

19

For example CLH Chip select. The general format

followed which chip seiecr signal

signal fot the Clear Data Digital Data inpudoutput on the Data Data multiplexer. Dynamic

by

some charmers. The characters indicate the device

tne

chip select

EPROM

to

send. Gened signal used in

Bus

/

analog

RW

indicates a frequency of

of

signal

apperms. For example CSRTC is

for

the real time clock

etc.

converter wire.

I/O

the chip select signals

connector

the

CLK

indicates the frequency.

19

and

CSEPROM

data

communication.

MHz.

is

Cs

to

the

is

the

select

DRC(0..6) DS..

DyTlamic Data

suobe.

RAii

control.

Page

8.3

Chaprer

8

Glossarv

Acronvms

SCHILLER

SERVICE

AT-I

3-Channel ECG

HANDBOOK

Issue

2

Juiv

1998

Unit

DSP..

DTXCK

DTR

ECGl ECGMUX

ECGO

EF

EJCT

EKGRES

FFOR

FL&M

FPLN

FWR

Digitai

Transfer

signal

processor

data

acknowledge.

ion

program

Bus

signal

dam

Outgoing serial ECG

in

-

The multiplexed ECG signal ECG out - serial ECG

the

optical interface.

Empty

tlag.

data

serial ECG

tuns

modem

dam

to

the CPU sent over the

from

amplifier

control

on.

the ECG

Eject (paper tray).

si,d

to

the

ECG

Reset

Amplifier

First

in

to

first

out

recenter the

read.

Control signal for

.hpMier.

ECG image

frame

synchronisation

T~IS

Input for floating point co-processor. Rag

read / write.

pack).

to acknowledge transfer of

optical

interface.

amplifier.

dam

from

the

CPU

sent

si@

resets

the

ECG

on

the LCD.

of

the

LCD.

over

HEV

HSYNC

IPLO..:!

IREG

ISYS

KB

..

KBBEEP

KB

CLR

KBCLl

'KB

CL3

KBIN..

KBS..

KONV

LA

For

Output enable signal

thermal Horizontal synchronisation (video Interrupt priority level

(binary

print

head

/

VGA output).

encoded).

dam

(History

Control signal from the current detector and limiter circuit

power supply

Interrupt system Keyboard Keyboard beep

data

to

regulate

(2

supply.

Wz).

in.

(to

audio amplifier). Keyboard clear. Keyboard clock. Keyboard clock. Keyboard

from the keyboard

to

the

CPU.

data

in

-

serial

data

Keyboard Strobe.

Conven

signal initiates the conversion

or'

the

incoming

-

this

from rhe ECG .ArnpLifer..

.kn.

Left

enable).

on

the

signal

Page

8.4

LCA LCDAS

Liquid ~xysral address - enable. LCD Address Strobe.

SCHLLLER

SERVICE

AT-1

HANDBOOK

3-Channei

ECG

Issue

Unir

2

Julv

1998

Chapter

Glossary

8

Acro

n

vms

LCDKONT

LCDW LD

1.2.3.4

LDS

LED

(0.3

LEDB

LEDMAINS

LOE

LP

LSRAM LWE

M

LCD contrast - sets

backlight LCD Write. Lower Lower Operate signals to

Battery

Signal

key board. Lower output enable Line synchronisation. Lower Lower Write Enable - control LCD control signal derived

power

LO

data

suobe.

LED.

indicating

output

the

-18

V

is

generated) and thus the contrast

dam

the

LED

indicators on the keyboard.

mains

connected - to operate

-

con,uol

enable - control

from

voltage level (from which

of

the screen.

LED

indicator on the

si,.nal

signal

for static

for

Static

Ram.

RAM.

Ram.

EM.

the

LCD

MCLK

IMOD

MOFF

MON

m

NMI

OFF

PDS

PM PMARK PMPON PMNEG PMPOS PWM

Motor Clock - speed control for the printer motor. Conuol signal from the battery charging circuir

off.

-Motor .Motor

On

-

Pnnter motor enable signal.

Mains

supply.

Non-maskable intermpt activated by the reset button.

Off

signal from the

Conuoi signal derived from frequency).

Paper mark signal.

Paper mark detection signal.

Pacemaker detection pulse.

Pacemaker negxive

Pacemaker positive Pulse Width AModulation

-

interrupt for U47 (Schiller gate

OFF

key to switch

&'vl

-

indicates the trailing edge

-

indicates the leading edge

off

the power supply.

(unity waveform

of

of a pacemaker pulse.

array)

1/2

&&I

a

pacemaker pulse.

QmG

Eu

RAS RES

QRS trigger Right Row address strobe. Reset.

.Ann.

-

output signal.

Page

8.5

Chapter

5

Glossary

Acronyms

RESLCDI

Resers

I

darkens the

LCD.

SCHILLER

SERVICE

AT-I

3-CImeL

HANDBOOK

Issue

2

ECG

July

Unit

I998

RESP

RTS

ftyD

R/W

SC(O..S)

SCINV SI

so

SP.. SRAM sm1/2 SYSED

TGATE

TM

Error reset signal to inactivate the LCD.

to

Ready Receive Read i Write System control

Screen inversion. Senal Serial

Spirometry control and Static Timing System enable

will

Gate pulse for programmable

si,.nal.

Thermal printer temperature - dc voltage from the print head, pulse width modulation

send - ougoing serial

data

-

incoming serial

bus

in. output

from

fib4

memory.

signals

not

work

for

-

active when the program pack

if

this

of

-

CPU control signals.

the

CPU

printer conuol.

signal

dam

is

TPTH.

dam

data.

to

the

ECG

signals.

not active.

timer.

T~IS

handshake with

amplifier

signal

via

is

inserted. The

sets the

CTS-

opt0 isolators.

CPU

"DUR

TPC

TPCLK

TPD

TPDUR

TPCSEL

TPL

TPRES

TPSOk1

TPTH

TS

TXD

Thermal printer clock. active when loading a line

Thermal printer clock Thermal printer Thermal printer duration

the ambient temperature print head.

Thermai printer controller select

(input memory buffer).

Thermal pnnter latch Thermal pnnter reset Thermal Printer Strobe Thermal Pnnter temperature

approximately Temperature sense (from battery). Outgoing serial

3.7V

This

data - serial

-

duration

of

-

print

-

FIFO

-

master timing strobe enable signal.

at

room temperature.

data.

is

not a continuous clock signal but

of

printer

data

the print head and the resistance

-

suobe

reset for thennal printer controller.

-

dc voltage from the print head

data

(into shift registers).

for the printer.

of

the strobe pulse dependant

control

of

thermal printer

control and

data

latch signal.

is

of

the

FlFO

to

ADC,

on

Page

5.6

SCHILLER SERVICE

AT-I

3-CImel

HANDBOOK

Acronyms

ECG

Issue

Unit

2

July 1998

Off

control signal. Logic 1 keeps the switches the unit directly

hm

the

off. ON

Yote

key

on

unit

that

rhe

unit

the keyboard.

switched

is

inirially

on.

Logic

switched

0

on

Chapter

Glossan

8

U1.2.3.4

+uB

UCAS

uD1,

uD2

UDS UOE. USRAM

+UP

UWE

+U

+UBU

+uD

-ULCD

Upper LCD Battery voltage. Upper ljpper

Upper Data Strobe Upper output enable Voltage recrtfied

i

15

Upper Write Enable - for static Unregulated dc supply Back-up voltage for the real time clock and static

Unswitched regulated dc voltage switched supply +US. The voltage or battery voltage when

connected.

Contrast voltage

data.

column

data

V.

address strobe (for dynamic

strobe

-

used

for generating

-

used

on

-

for smc

from

the

mains

from

mains

this supply charges the battery.

to

LCD.

RAM).

UOE

and UWE.

the

SCHILLER

gate array.

,9XIM.

input

and

regulated

R;LM.

(approximately

used

as

power

is

13.5V

when

is not connected. When

to

30

RAM.

source

mains

approximately

V).

for the

is

connected,

mains

is

+us

vcc

VMA VP.4

VSYNC WPO and

‘yDO..XD3

XSCL YD YDISI

ZEROSET

WP1

dc

Switched voltage when working from the battery. Input voltage for the power supply board.

+j

V.

Valid memory address.

Valid

Vertical synchronisation

ECG

the optical

Pixel iniormation.

Shift

Frame synchronisauon. LCD Baseline reset (on the ECG amplifier)

voltage

peripheral address.

In

-

the serial multiplexed ECG serial

interha,

clock

for .an.

off.

of

13.3’

from

when

-

(video

/

VGA

rhe

ECG Amplifier.

mains

output).

from

is

connected or battery

data

to

the CPU sent over

the processor.

all

PSUs

on

Page

8.7

Cluprer

Glossan

8

SCHILLER

SERVICE

AT-1

3-Clmel

HANDBOOK

Issue

ECG

2

JuLv

Unit

1998

Page

8.8

SCHILLER

SERVICE

HANDBOOK

AT-1

3-Channel

Issue

ECG

3

Unit

Seutember

1999

Index

Page

.

I

Index

A

Adjustment

+2V,

-2V

5.8

Banery

ECGAmDMier

PWMRampTme 5.8

Auto-Czntering

B

Charge Voltage 5.7

1.9

5.8

SERVICE

SCHLLLER

HRNDBOOK

AT-1

3-Chunnel

Issue

3 September

ECG

Unit

I999

Battery

Pack

Remove / replace

C

Component

ECGAmplifier

MK

Configurations

CPU

11-1

and

Processing

Location

4.6

7.3

D

Diagnosis

Dimensions

E

ECG

Functional Overview

Reference Voltage 5.9

TechcaIData 72

ECG

Sequential

simultaneous

ECGSignai

Electrode Environmental

Exploded

AT-1 4.9

Paper

Chart

Anplifier

Isolated Power Supplies pnntout

Dc

View

tray

3.3

7.2

1.9

2.6

Offset

Condition

assembly

4.13

5.9

Circuits

2.6

5.10

4.14

I

‘I

2.4

2.6

7.3

F

Filter

Baseline

Mains

Myopm

Function

Functional Overview

G

General Check Graphic

I

Indicators

Page

.2

1.8,

Xeys

AT-1

1.5

1.8

7.2

1.8.

1.4

Procedures

1.2

7.2

2.1

3.4

SCHILLER SERVICE

HAMIBOOK

L

AT-1

3-Channel

Issue

ECG

3

Unit

September

1999

Index

Lead Sequence

1.9

M

Main

board

Memory 2.4

EEPROM Propram static

RAM

MotorSpeed

?Ax

2.4

2.5

11-1

2.4

2.4, 2.5

N

Noise

Dampng

2.6

0

Openingthecase 4.7

Operatingmodes

Ordering information

1.3

6.2

P

Paper PaperMark 2.5

PartNumbers

Patient Cable Resistance Patient Lmkage Current 7.3 Physical Overview 4.5 Power Consumption

Power

Power Supply 2.1

printer

Printout

1.9

On

Reset 2.5

Check

Motor

controller 2.5

Service Settings

3.5

1.14,

6.3

1.12,

5.10

7.2

5.10

5.11

R

Removal

Control

ECG

Paper tray 4.14 Thermalpnnter 4.14 Top Assembly 4.7

Replacement

Control

ECG

Keyboard

and

power supply

Interface

and

power supply

Interface

3.16

board

MKll-2

board

MK

11-2

MX

4.10

lvLK

4.10

11-1

4.11

4.12

Page

.3

Index

Paper

my

assembly

Thermalpter

Top

Assembly

RhythmLeads

Selection

1.11

S

Service

Support

Settings

Automatic

Average cycles

Debuit 1.13

ECG

Fiiters

Language 1.7 Measurement 1.1 Printout 1.12 Programmable parameters 1.6

software

Installing

Spare

Format

options

parts

6.2

mode

1.8

1.15,

6.1

4.15

4.8

1.10

1

5.11

SERVICE

SCHIUER

HANDBOOK

AT-1

Issue

3-Channel

3

September

ECG

Unit

1999

T

TechnicalData 7.1 Test Equipment 4.6,

Thermal

Tools

W

Weight

Pnnt Head Alignment Controller 2.5

4.6

7

3.5

2

5.4

Page

.4

1-

I

LLDUNNS

CPUNECODEMlMERIHlCC

~-'

hl

1:

C

-.

.-

.- - . . .

.-.

-

5

2VltZ4V DCfDC CONVEflTER

3

HON

____-

IKlllDCD

kch

IKl

I

lONO

IE~

MICROPROCESSOR

Slze

A3 )Drawn

by

STH

dlllRA SCH

IAlNS

3

BAll

3

lf

IKI 1

MK11-1

1

Enlw

(AT-1)

lllsp

INPUT

DUMS

IBAT

I

BAl~Y

.ch

(Dale

CHARGER

30

01

97

-

Altgasse

68

VtC

"CC

PAPERMARK DETECTOR

mcc

8/13

VR50K

TP /KEYBOARD

Slle

A3

IDrswnby

STR

CONTROLLER

(Enlw

rnsp

MKI

1-1

(AT-1)

-

Altyasse

68

-_

I

Ill

I

Ill

I

‘Ill

11

I

MAINS

230VAC

11 WAC

C83

3

0

L

.U

4

012

UND OND

GND

CUD

OND

?

I

U

I

I-

,.-

I

-2

I

LL

>-----.-----

CAVE,

39klD

lJ

1%

A

n

s

T

,\

-

I

"I

4

.-

"I

T

v

B

0

T

,

I

t

I

1