Datex-Ohmeda S-5 M-Modules Technical reference manual

Datex-Ohmeda

S/5™ M-Modules

Technical Reference Manual

Datex-Ohmeda, Inc.

P.O. Box 7550, Madison
WI 53707-7550, USA
Tel. [phone]
Fax [phone]

All specifications are subject to change without notice.

Document No. M1025359

June 2005

GE Healthcare Finland Oy

Helsinki, Finland

P.O. Box 900

FIN-00031 GE, FINLAND

Tel. [phone] Fax [phone]

www.datex-ohmeda.com www.gehealthcare.com

© 2005 Copyright General Electric Company

Responsibility of the manufacturer

GE Healthcare Finland Oy(GE) is responsible for the safety, reliability and performance of the equipment only
if:

− modifications, service and repairs are carried out by personnel authorized by GE.

− the electrical installation complies with appropriate requirements.

− the equipment is used in accordance with the User’s Guide and serviced and maintained in

accordance with the Technical Reference Manual.

Trademarks

Datex, Ohmeda, S/5, D-lite, D-lite+, Pedi-lite, Pedi-lite+, Mini D-fend, D-fend,
D-fend+, OxyTip+, MemCard, ComWheel, EarSat, FingerSat, FlexSat, PatientO

and Tonometrics are trademarks of GE Healthcare Finland Oy. All other product and company names are

property of their respective owners.

Copyright

© 2005 Copyright General Electric Company

All specifications subject to change without notice.

, Entropy, Patient Spirometry

2

Table of contents

Master Table of Contents

Technical Reference Manual, S/5™ M-Modules

M1025359

For S/5™ Anesthesia Monitor and Critical Care Monitor
and S/5™ Compact Anesthesia Monitor and Compact Critical Care Monitor

Document No. Updated Updated Description

8001008 -6

8001009 –5

8001010 –4

8001011 –4

8001012 –4

8001013 –4

8001014 –4

8001015 –5

8001016 –3

8005426 –1

8001018 –4

8003840 –1

Hemodynamic Modules,
M-NE12STPR, M-NE12STR, M-NE12TPR, M-NESTPR, M-NESTR,
M-NETPR, M-ESTPR, M-ESTR, M-ETPR

Compact Airway Modules, M-CAiOVX, M-CAiOV,M-CAiO, M-COVX,
M-COV, M-CO, M-C

Tonometry Module, M-TONO

EEG Module, M-EEG and EEG Headbox, N-EEG

Cardiac Output Modules, M-COP and M-COPSv

Pressure Module, M-P, Pressure Temp Module, M-PT

Dual Pressure Module, M-PP

NIBP Module, M-NIBP

Recorder Module, M-REC

Oxygen Saturation Modules, M-NSAT, M-OSAT

NeuroMuscular Transmission Module, M-NMT

Anesthesia recordkeeping keyboard for, K-ARKB, Keyboard
Interface Board, B-ARK and ARK Barcode Reader, N-SCAN

1

2

3

4

5

6

7

8

9

10

11

12

8001020 –5

8001021 –4

8005676

8003476-2

8003934-1

8003487-3

8004390

8005571-1

8001005-5

Memory Module, M-MEM

Interface Module, M-INT

Device Interfacing Solution, N-DISxxxx

BIS Module, M-BIS

Remote Controllers, K-REMCO, K-CREMCO

Single-width Airway Module, M-miniC

Entropy Module, M-ENTROPY

PRETSN Module

Airway Modules, G-AiOV, G-AiO, G-AOV, G-AO, Gas Interface Board
B-GAS

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14

15

16

17

18

19

20

21

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Datex-Ohmeda S/5 Modules

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Document No. M1025359

INTRODUCTION

This Technical Reference Manual provides information for the maintenance and service of the
Datex-Ohmeda S/5™ M-Modules, record keeping keyboard, remote controllers and Device
Interfacing System. These Datex-Ohmeda devices are designed for use with S/5™ Anesthesia
Monitor, S/5™ Critical Care Montor, S/5™ Compact Anesthesia Monitor, and S/5™ Compact
Critical Care Monitor.

Please see also the Technical Reference Manual of the S/5 monitor for system specific information
e.g. related documentation, conventions used, symbols on equipment, safety precautions, system
description, system installation, interfacing, functional check and planned maintenance.

For more detailed information about compatibility with different monitor software types and levels
se the "Introduction" chapter of the slot of the module or other device.

Introduction

S/5™ parameter modules, Device Interfacing Solution, Record keeping keyboard and Remote Controller

Document No. M1025359

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Datex-Ohmeda S/5 Modules

Notes to the reader

This Technical Reference Manual is intended for service personnel and engineers who will perform
service and maintenance procedures on the Datex-Ohmeda S/5 Anesthesia Monitor,S/5 Critical
Care Monitor, S/5 Compact Anesthesia Monitor or S/5 Compact Critical Care Monitor.

This Technical Reference Manual completes the Technical Reference Manual of the S/5 Anesthesia
Monitor and S/5 Critical Care Monitor or S/5 Compact Anesthesia Monitor and S/5 Compact
Critical Care Monitor.

• Document number M1025359 is the order number for the whole printed manual. This

manual includes Technical Reference Manual Slots and every slot has own document
number.

• The Technical Reference Manual, S/5 Modules gives detailed descriptions of paramter

modules and other products that can be used with all S/5 modular monitors. Service check
for each product is included in these slots.

For monitor or system specific information see:
The Technical Reference Manual of the S/5 Anesthesia Monitor and S/5 Critical Care Monitor or
The Technical Reference Manual of S/5 Compact Anesthesia Monitor and S/5 Compact Critical
Care Monitor.

The manufacturer reserves the right to change product specifications without prior notice. Although
the information in this manual is believed to be accurate and reliable, the manufacturer assumes
no responsibility for its use.

GE Healthcare Finland Oy (GE) assumes no responsibility for the use or reliability of its software in
equipment that is not furnished by GE.

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Document No. M1025359

Introduction

Conventions used

Throughout this manual, the following conventions are used to distinguish procedures or elements
of text:

Sign the check form after performing the procedure.

"

Hard Keys Hard key names on the Command Board, the Remote Controller, and modules are written in bold

D-O Sans (12 pt) typeface, e.g.

Menu Items Menu items are written in bold italic, D-O Sans (11 pt) typeface, e.g. ECG Setup.

‘Messages’ Messages displayed on the screen are enclosed in single quotes, e.g. ‘Please wait’.

Chapters When referring to different chapters in the same manual, the chapter name is written in italic

typeface and is enclosed in double quotes, e.g. chapter “Cleaning and Care.”

Other documents

When referring to different documents, the document name is written in italic typeface, e.g. refer to
User’s Reference Manual.

ECG.

Hypertext links Hypertext links on PDF versions are written in blue color.

WARNING Warnings are written in bold typeface (13 pt), for example:

WARNING Use only hospital-grade electrical outlets and power cord.

CAUTION Cautions are written in the following way (13 pt):

CAUTION The circuit boards contain sensitive integrated circuits that can be damaged by an

electrostatic discharge. Careful handling of the boards is therefore essential.

Document No. M1025359

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Datex-Ohmeda S/5 Modules

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Document No. M1025359

S/5

S/5
S/5

Datex-Ohmeda Hemodynamic modules

TM

NE12STPR Module, M-NE12STPR (rev. 02)

TM

NE12STR Module, M-NE12STR (rev. 02)

TM

NE12TPR Module, M-NE12TPR (rev. 02)

TM

S/5

NESTPR Module, M-NESTPR (rev. 01)

TM

S/5
S/5

S/5

NESTR Module, M-NESTR (rev. 01)

TM

NETPR Module, M-NETPR (rev. 01)

TM

ESTPR Module, M-ESTPR (rev. 04)

TM

S/5
S/5

ESTR Module, M-ESTR (rev. 04)

TM

ETPR Module, M-ETPR (rev. 04)

Technical Reference Manual Slot

Datex-Ohmeda, Inc.

P.O. Box 7550, Madison
WI 53707-7550, USA
Tel. [phone] Fax [phone]

www.us.datex-ohmeda.com

mailto:[e-mail]

All specifications are subject to change without notice.

Document No. 800 1008-6

October 2003

Datex-Ohmeda Division, Instrumentarium Corp.

P.O. Box 900, FIN-00031

DATEX-OHMEDA, FINLAND

Tel. [phone] Fax [phone]

www.datex-ohmeda.com

 Instrumentarium Corp. All rights reserved.

Table of contents

TABLE OF CONTENTS

HEMODYNAMIC MODULES

TABLE OF CONTENTS i

Table of figures iii

Introduction 1

1 Specifications 3

1.1 General specifications ..............................................................................................................................3

1.2 Typical performance .................................................................................................................................3

1.2.1 NIBP................................................................................................................................................3

1.2.2 ECG.................................................................................................................................................4

1.2.3 Pulse oximetry..................................................................................................................................4

1.2.4 Temperature.....................................................................................................................................5

1.2.5 Invasive blood pressure ....................................................................................................................5

1.2.6 Respiration ......................................................................................................................................5

1.3 Technical specifications............................................................................................................................6

1.3.1 NIBP................................................................................................................................................6

1.3.2 ECG.................................................................................................................................................6

1.3.3 Pulse oximetry..................................................................................................................................7

1.3.4 Temperature.....................................................................................................................................7

1.3.5 Invasive blood pressure ....................................................................................................................7

1.3.6 Respiration ......................................................................................................................................7

2 Functional Description 8

2.1 Measurement principle .............................................................................................................................8

2.1.1 NIBP................................................................................................................................................8

2.1.2 ECG.................................................................................................................................................8

2.1.3 Pulse oximetry..................................................................................................................................8

2.1.4 Temperature...................................................................................................................................10

2.1.5 Invasive blood pressure ..................................................................................................................11

2.1.6 Respiration ....................................................................................................................................11

2.2 Main components...................................................................................................................................11

M-ESTPR/-ETPR/-ESTR modules...............................................................................................................11

M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR modules .................................................12

2.2.3 NIBP board ....................................................................................................................................13

2.2.4 ECG board in 3-and 5-lead measurement........................................................................................15

2.2.5 ECG board in 12-lead measurement ...............................................................................................17

2.2.6 ECG filtering...................................................................................................................................19

2.2.7 STP board ......................................................................................................................................20

2.3 Connectors and signals...........................................................................................................................25

2.3.1 Module bus connector....................................................................................................................25

2.3.2 Front panel connectors...................................................................................................................26

2.3.3 Test points on boards .....................................................................................................................27

3 Service Procedures 29

3.1 General service information.....................................................................................................................29

3.2 Service check .........................................................................................................................................29

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3.2.1 Recommended tools......................................................................................................................29

3.2.2 Recommended parts......................................................................................................................29

3.3 Disassembly and reassembly..................................................................................................................40

3.3.1 M-ESTPR, M-ESTR, and M-ETPR modules........................................................................................40

3.3.2 M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR modules.......................................40

3.4 Adjustments and calibrations..................................................................................................................41

3.4.1 Pressure safety level detection “OFFSET”.........................................................................................41

3.4.2 NIBP calibrations ...........................................................................................................................41

3.4.3 Temperature calibration .................................................................................................................43

3.4.4 Invasive pressure calibration ..........................................................................................................43

4 Troubleshooting 45

4.1 Troubleshooting charts ...........................................................................................................................45

4.1.1 NIBP..............................................................................................................................................45

4.1.2 NIBP error code explanation ...........................................................................................................48

4.1.3 ECG...............................................................................................................................................49

4.1.4 Pulse oximetry (SpO

4.1.5 Temperature ..................................................................................................................................50

4.1.6 Invasive blood pressure..................................................................................................................51

4.1.7 Impedance respiration ...................................................................................................................52

4.2 Troubleshooting flowcharts .....................................................................................................................53

4.2.1 M-NE12STPR and M-NESTPR module troubleshooting.....................................................................53

4.2.2 M-ESTPR, M-ESTR, and M-ETPR module troubleshooting .................................................................54

).....................................................................................................................49

2

5Service Menu 55

5.1 NIBP service menu .................................................................................................................................56

5.1.1 NIBP demo menu...........................................................................................................................57

5.1.2 NIBP calibration menu....................................................................................................................58

5.1.3 NIBP safety valve menu..................................................................................................................59

5.1.4 NIBP pulse valve menu...................................................................................................................60

5.1.5 NIBP buttons/leds menu................................................................................................................61

5.1.6 NIBP pneumatics menu..................................................................................................................62

5.1.7 NIBP watchdog menu.....................................................................................................................63

5.2 ECG service menu ..................................................................................................................................64

5.2.1 ECG setup menu ............................................................................................................................66

5.3 STP service menu ...................................................................................................................................67

5.3.1 STP calibration menu .....................................................................................................................69

6 Spare Parts 70

6.1 Spare parts list.......................................................................................................................................70

6.1.1 M-ESTP rev. 01, M-ETP rev. 00, M-EST rev. 00 .................................................................................70

6.1.2 M-NESTPR rev. 00, M-NETPR rev. 00, M-NESTR rev. 00....................................................................74

6.1.3 M-NE12STPR rev. 00, M-NE12STR rev. 00, M-NE12TPR rev. 00.......................................................78

7 Earlier Revisions 81

APPENDIX A 83

Service Check Form 1

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Table of contents

TABLE OF FIGURES

Figure 1 S/5 NE12STPR Module, M-NE12STPR ................................................................................1

Figure 2 Absorption of infrared light in the finger probe parts layout and schematic diagram..............10

Figure 3 Front panel of M-ESTPR.....................................................................................................11

Figure 4 Front panel of M-NESTPR ..................................................................................................12

Figure 5 NIBP board functional block diagram.................................................................................13

Figure 6 3- and 5- lead ECG board block diagram ...........................................................................15

Figure 7 12-lead ECG measurement block diagram.........................................................................17

Figure 8 STP board block diagram...................................................................................................20

Figure 9 Temperature measurement principle .................................................................................21

Figure 10 Pressure measurement principle .......................................................................................21

Figure 11 Pulse oximetry measurement block diagram ......................................................................22

Figure 12 Serial communication and opto isolation of M-NESTPR/-NE12STPR ...................................23

Figure 13 Serial communication and opto isolation of M-ESTPR.........................................................24

Figure 14 Module bus connector (X1) pin layout ................................................................................25

Figure 15 M-NE12STPR and M-NESTPR module troubleshooting flowchart .........................................53

Figure 16 M-ESTPR Module Troubleshooting Flowchart ......................................................................54

Figure 17 Exploded view of M-ESTP Module ......................................................................................70

Figure 18 Exploded view of M-NESTPR Module..................................................................................74

Figure 19 Exploded view of M-NE12STPR Module..............................................................................78

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Document No. 8001008-6

INTRODUCTION

This Technical Reference Manual Slot provides information for the maintenance and service of the
hemodynamic modules. The S/5 M-ESTPR/-ESTR/-ETPR and S/5 M-NE12STPR/-NE12STR/­NE12TPR/-NESTPR/-NESTR/-NETPR are double width modules designed for use with S/5
monitors. Later in this manual modules may be referred to w/o the system name S/5 for simplicity.

Please refer to the Technical Reference Manual of the S/5 monitor for information related to
system e.g. related documentation, conventions used, symbols on equipment, safety precautions,
system description, system installation, interfacing, functional check and planned maintenance.

The M-ESTPR/-ESTR/-ETPR and M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR
modules provide general hemodynamic parameters

S/5 Hemodynamic modules

NOTE: Do not use identical modules in
the same monitor simultaneously.
The following modules are considered
identical:
M-ESTP/-EST/-ETP,
M-ESTPR/-ESTR/-ETPR,
M-NESTPR/-NESTR/-NETPR,
M-NE12STPR/-NE12STR/-NE12TPR

Figure 1 S/5 NE12STPR Module, M-NE12STPR

Table 1 Options of S/5 hemodynamic modules

Parameter NE12STPR NESTPR NE(12)

STR

12

12-lead ECG • (•)(•)

N

NIBP ••••

E

ECG • • •••••

S

Pulse oximetry ••• ••

T

Two temperatures • • •••••

P

Two invasive blood pressures •• •• •

R

Impedance respiration • • •••••

NE(12)
TPR

ESTPR ESTR ETPR

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Datex-Ohmeda S/5 monitors

NOTE: 12-lead ECG measurement requires Display Controller, B-DISP.

NOTE: M-ESTP rev. 01, M-EST rev. 00 and M-ETP rev. 00 work only with S-STD93, S-STD94, S-ARK94, S-STD95, S­ARK95, S-STD96 and S-ARK96 software.

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1 SPECIFICATIONS

1.1 General specifications

Module size 75 × 180 × 112 mm
W × D × H3.0 × 7.1 × 4.4 in
Operation temperature 10 to 40 °C / 50 to 104 °F

@ M-ESTPR/-ETPR/-ESTR

Module weight 0.6 kg / 1.3 lbs
Power consumption 6 W

@ M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR

Module weight 1 kg
Power consumption about 9 W

S/5 Hemodynamic modules

1.2 Typical performance

1.2.1 NIBP

NOTE:Non-invasive blood pressure measurement is intended for patients weighing over 5 kg (11
lb.)

Oscillometric measurement principle.

Measurement range adult 25 to 260 mmHg

Pulse rate range accepted 30 to 250 bpm

Measurement interval 1, 2.5, 3, 5, 10, 15, 30, 60 min (=1h), 2h, 4h

Typical measuring time adult 23 s

Initial inflation pressure adult 185 ±10 mmHg

Venous stasis adult 80 ±10 mmHg / 2 min.

child 25 to 195 mmHg
infant 15 to 145 mmHg

infant 20 s

child 150 ±10 mmHg
infant 120 ±10 mmHg

child 60 ±10 mmHg / 2 min.
infant 40 ±10 mmHg / 1 min.

Cuff widths please see User’s Guide

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Datex-Ohmeda S/5 monitors

1.2.2 ECG

Lead selection, 12-lead ECG I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6
Lead selection, oher modules I, II, III, aVR, aVL, aVF, V
Sweep speeds 12.5, 25, 50 mm/sec

DISPLAY FILTER

Diagnostic, 12-lead ECG 0.05 to 150 Hz
Diagnostic, other modules 0.05 to 100 Hz

Monitoring 0.5 to 30 Hz (-3 dB, with 50 Hz reject filter)

ST filter 0.05 to 30 Hz (-3 dB, with 50 Hz reject filter)

HEART RATE FROM ECG

Range 30 to 250 bpm
Accuracy ±5 bpm or ±5 %, whichever is greater
Resolution 1 bpm
Update interval 5 s
Averaging time 10 s

0.5 to 40 Hz (-3 dB, with 60 Hz reject filter)

0.05 to 40 Hz (-3 dB, with 60 Hz reject filter)

ST LEVELS (in main software)

ST level range -9 to +9 mm (-0.9 to +0.9 mV)
Resolution 0.1 mm (0.01 mV)
Averaging calculated from 8 QRS

SYNCHRONIZATION

Direct ECG analog output of ECG, 1 V/1 mV
Pacer 5 V and 0.5 to 2.5 ms pulse, < 30 ms after pacer peak
Defibrillator 5 V and 10 ms pulse, < 35 ms after R-point synchronization

1.2.3 Pulse oximetry

Measurement range 40 to 100 %
Accuracy 100 to 80 %, ±2 digits

(% SpO

Display resolution 1 digit = 1 % of SpO
Display averaging time 20, 10 sec, beat-to-beat
Pulse beep pitch varies with SpO

The monitor is calibrated over the measurement range against functional saturation SpO

PULSE RATE FROM PLETH

Measurement range 30 to 250 bpm
Accuracy 30 to 100, ±5 bpm,

Resolution 1 bpm
Display averaging 10 s

2 ±1 SD)

1

80 to 50 %, ±3 digits
50 to 40 %, unspecified

2

2 level

func.

2

100 to 250, ±5 %

1

1 SD (standard deviation) = 68 % of all readings in the specified range in stable conditions.

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Adjustable pulse beep volume.

PLETH WAVEFORM

Scales 2, 5, 10, 20, 50 mod%, Auto

Start up scale is 20 mod% if AUTO is not selected to be the default setting.

1.2.4 Temperature

Measurement range 10 to 45 °C (50 to 113 °F)
(In rev. ESTP 03/ EST 02/ETP 02 or earlier: 15 to 45 °C (59 to 113 °F))

Measurement accuracy ±0.1 °C (25 to 45.0 °C)

Display resolution 0.1 °C (0.1 °F)
Temperature test automatic (every 10 min)
Probe type compatible with YSI 400 series

1.2.5 Invasive blood pressure

Measurement range -40 to 320 mmHg
Measurement accuracy ±2 mmHg or ±5 %
Zero adjustment range ±150 mmHg
Calibration range ±20 %
Scales upper limit is adjustable between 10 and 300 mmHg in steps of

S/5 Hemodynamic modules

±0.2 °C (10 to 24.9 °C)

10. Lower limit is 10 % of selected upper limit below zero.

Sweep speed 12.5, 25, 50 mm/s

DIGITAL DISPLAY

Range -40 to 320 mmHg
Resolution ±1 mmHg

WAVEFORM DISPLAY

Range -30 to 300 mmHg

PULSE RATE FROM ARTERIAL PRESSURE

Measurement range 30 to 250 bpm
Resolution 1 bpm
Accuracy ±5 bpm or ±5 % whichever is greater

1.2.6 Respiration

NOTE:The respiration measurement is intended for patients over three years old

Measurement range 4 to 120 bpm
Accuracy ±5 bpm or ±5 %
Resolution 1 bpm
Averaging time 30 s
Update interval 10 s

RESPIRATION WAVEFORM

Sweep Speeds 6.25 mm/s and 0.625 mm/s

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Datex-Ohmeda S/5 monitors

1.3 Technical specifications

1.3.1 NIBP

Deflation rate, PR dep. 5 to 13 mmHg/s
Inflation time 20 to 185 mmHg, 1 to 5 s

Automatic software control, max. inflation pressure

Over pressure limit, stops measurement after 2 seconds

The safety valve limits the maximum cuff pressure to 320 mmHg in adult/child mode or 165 mmHg
in infant mode. Independent timing circuit limits pressurizing (>15 mmHg) time to 2 minutes 10
seconds maximum in adult/child mode, and 1 minute 5 seconds in infant mode.

adult 280 ±10 mmHg
child 200 ±10 mmHg
infant 150 ±10 mmHg

adult 320 mmHg
child 220 mmHg
infant 165 mmHg

1.3.2 ECG

Zeroing to ambient pressure is done automatically.

Inflation pressure is adjusted according to the previous systolic pressure, typically 40 mmHg
above. If the systolic pressure is not found, inflation pressure is increased typically 50 mmHg.

Max. measurement time adult 2 min

child 2 min
infant 1 min

Pressure transducer accuracy is better than ±3 mmHg or ±2 % whichever is greater.
Max. error ±4 mmHg.

Protection against electrical
shock Type BF defibrillation proof

Defibrillation protection 5000 V, 360 J
Recovery time 2 s
Input impedance >2.5 MΩ (10 Hz)
CMRR >100 dB (ST)
System noise <40 µV (p-p, RTI)
Allowable offset ±300 mVDC
Gain range 0.2 to 5.0 cm/mV
Pacemaker pulse detection 2 to 500 mV, 0.5 to 2 ms pulses

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Protection against electrical
shock Type CF defibrillator proof

1.3.3 Pulse oximetry

Protection against electrical
shock Type BF defibrillation proof

1.3.4 Temperature

Measurement accuracy ±0.1 °C (25.0 to 45.0 °C)

Protection against electrical
shock Type CF defibrillation proof

NOTE: The accuracy of the measurement may be different from the specified, depending on
transducer/probe used. Please refer to the transducer/probe specification.

1.3.5 Invasive blood pressure

DIGITAL DISPLAY AVERAGING

Digital displays Art and P1 are averaged over 5 seconds and updated at 5 seconds intervals. All
other pressures have respiration artifact rejection.

S/5 Hemodynamic modules

±0.2 °C (10.0 to 24.9 °C)

Accuracy ±5 % or ±2 mmHg, whichever is greater
Transducer and input sensitivity

Input voltage 5VDC
max current 20 mA
Filter 0 to 4 - 22 Hz adjustable
Zero set accuracy ±1 mmHg
Calibration resolution ±1 mmHg
Zero time less than 15 s
Protection against electrical
shock Type CF defibrillation proof

NOTE: The accuracy of the measurement may be different from the specified, depending on
transducer/probe used. Please refer to the transducer/probe specification.

1.3.6 Respiration

Excitation frequency, 12-lead ECG 62.5 kHz

Excitation frequency, other modules 31.25 kHz

Breath detection automatic, range 0.3 to 6 Ω manually adjustable minimum

Input dynamic range 0.2 to 6 Ω
Input impedance range 100 to 5000 Ω
Respiration Rate min. 4 bpm

Lead off detection >3 MΩ

5 µV/V/mmHg

detection: 0.2, 0.4, 0.6, 0.8, 1.0

max. 120 bpm

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Datex-Ohmeda S/5 monitors

2 FUNCTIONAL DESCRIPTION

2.1 Measurement principle

2.1.1 NIBP

NIBP (Non-Invasive Blood Pressure) is an indirect method for measuring blood pressure.

The NIBP measurement is performed according to the oscillometric measuring principle. The cuff is
inflated with a pressure slightly higher than the presumed systolic pressure, and deflated at a
speed based on the patient’s pulse, collecting data from the oscillations caused by the pulsating
artery. Based on these oscillations, values for systolic, mean, and diastolic pressures are
calculated.

The following parts are necessary for the NIBP measurement:

• M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR (or M-NIBP) module

• twin hose (adult or infant model)

• blood pressure cuffs (various sizes)

2.1.2 ECG

Electrocardiography analyzes the electrical activity of the heart by measuring the electrical
potential produced with electrodes placed on the surface of the body.

ECG reflects:

• electrical activity of the heart

• normal/abnormal function of the heart

• effects of anesthesia on heart function

• effects of surgery on heart function

See the User's Guide or theUser's Reference Manual for electrodes positions and other
information.

2.1.3 Pulse oximetry

A pulse oximeter measures the light absorption of blood at two wavelengths, one in the near
infrared (about 900 nm) and the other in the red region (about 660 nm) of the light spectrum.
These wavelengths are emitted by LEDs in the SpO
peripheral tissue and is finally detected by a PIN-diode opposite the LEDs in the probe. The pulse
oximeter derives the oxygen saturation (SpO
between the relative absorption at the two wavelengths and the arterial oxygen saturation SaO

probe, the light is transmitted through

2

) using an empirically determined relationship

2

.

2

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Document No. 8001008-6

In order to measure the arterial saturation accurately, pulse oximeters use the component of light
absorption giving variations synchronous with heart beat as primary information on the arterial
saturation.

S/5 Hemodynamic modules

A general limitation of pulse oximetry is that due to the use of only two wavelengths only two
hemoglobin species can be discriminated by the measurement.

The modern pulse oximeters are empirically calibrated either against fractional saturation

frac;

SaO

2

2

=

2

fracSaO

HbO

2

++

binDyshemogloHbHbO

Formula 1

or against functional saturation SaO

HbO

=

2

funcSaO

Functional saturation is more insensitive to changes of carboxyhemoglobin and methemoglobin
concentrations in blood.

The oxygen saturation percentage SpO
against functional saturation SaO
measurement relative to SaO2func can be maintained even at rather high concentrations of
carboxyhemoglobin in blood. Independent of the calibration method, pulse oximeters are not able
to correctly measure oxygen content of the arterial blood at elevated carboxyhemoglobin or
methemoglobin levels.

Plethysmographic pulse wave

The plethysmographic waveform is derived from the IR signal and reflects the blood pulsation at
the measuring site. Thus the amplitude of the waveform represents the perfusion.

Pulse rate

The pulse rate calculation is done by peak detection of the plethysmographic pulse wave. The
signals are filtered to reduce noise and checked to separate artifacts.

func;

2

2

HbHbO

2

+

measured by the Datex-Ohmeda module is calibrated

2

func. The advantage of this method is that the accuracy of SpO

2

Formula 2

2

Probe

The standard probe is a finger clamp probe which contains the light source LEDs in one half and
the photodiode detector in the other half. Different kinds of probes are available from Datex­Ohmeda.

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Document No. 8001008-6

Datex-Ohmeda S/5 monitors

Intensity of
transmitted
light

I

max (DC-component)

I

I

min

max

AC-component

Transmitted
light

Incident light

Emitter

RED

Detector

No pulsation

IRED

Pulsatile blood

SpO sensor cable

2

Variable absorption
due to pulse added
volume of arterial
blood

Arterial blood

Venous blood

Tissue

Time

SpO sensor connector

2

6

GND

7

I

LED

4

5

GND

8

V

B

R

C

1

I

S

9

GND

Figure 2 Absorption of infrared light in the finger probe parts layout and schematic

2.1.4 Temperature

The temperature is measured by a probe whose resistance varies when the temperature changes,
called NTC (Negative Temperature Coefficient) resistor.

The resistance can be measured by two complementary methods:

10

Document No. 8001008-6

diagram

• Applying a constant voltage across the resistor and measuring the current that flows

through it

• Applying a constant current through the resistor and measuring the voltage that is

generated across it.

In Datex-Ohmeda modules the two methods are combined in the form of a voltage divider. The
NTC-resistor is connected in series with a normal resistor and a constant voltage is applied across
them. The temperature dependent voltage can be detected at the junction of the resistors, thus
producing the temperature signal from the patient. The signal is amplified by analog amplifiers and
further processed by digital electronics.

2.1.5 Invasive blood pressure

To measure invasive blood pressure, a catheter is inserted into an artery or vein. The invasive
pressure setup, consisting of connecting tubing, pressure transducer, an intravenous bag of normal
saline all connected together by stopcocks, is attached to the catheter. The transducer is placed at
the same level with the heart, and is electrically zeroed.

The transducer is a piezo-resistive device that converts the pressure signal to a voltage. The monitor
interprets the voltage signal so that pressure data and pressure waveforms can be displayed.

2.1.6 Respiration

Impedance respiration is measured across the thorax between ECG electrodes. The respiration
signal is made by supplying current between the electrodes and by measuring the differential
current from the electrodes. The signal measured is the impedance change caused by breathing.
From these impedance changes, respiration rate is calculated, and the respiration waveform is
displayed on the screen.

S/5 Hemodynamic modules

2.2 Main components

2.2.1 M-ESTPR/-ETPR/-ESTR modules

T1

T2

ECG+
Resp

Figure 3 Front panel of M-ESTPR

The M-ESTPR, M-ETPR, and M-ESTR modules contain two main PC boards, the STP board and the
ECG board. They work independently. Both of them have their own processor and software EPROM.
Some components on the boards are not used in ETPR and ESTR modules.

SpO

P1

P2

2

ECG

Lead

Start

Wedge

Zero

P1

Zero

P2

In the M-ESTPR module, additionally, there are two small boards, the SP input and the ECG input
boards, attached to the front panel of the module. The front panel has six connectors and four keys.

11

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

The connectors are two for temperature measurement, two for invasive blood pressure
measurement, one for ECG, and one for SpO

measurement. The keys are for ECG lead, Start

2

Wedge, P1 zero, and P2 zero.

In the M-ETPR module, there are two small boards, the ECG input board and the 2P input board
attached to the front panel of the module. The front panel has five connectors and four keys. The
connectors are two for temperature measurement, two for invasive blood pressure measurement,
and one for ECG

measurement. The keys are for ECG lead, Start Wedge, P1 zero, and P2 zero.

In the M-ESTR module, there are two small boards: the S input board and the ECG input board,
attached to the front panel of the module. The front panel has four connectors and one key. The
connectors are two for temperature measurement, one for ECG, and one for SpO
The key is for ECG lead select.

NOTE: M-ESTP rev. 03, M-ETP rev. 02 and M-EST rev. 02 and all earlier revisions have separate T
and SP input boards.

2.2.2 M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR modules

measurement.

2

Auto

On/Off

NIBP

T1

ECG+
Resp

P1

Start

Cancel

P2

T2

Zero

SpO

2

P1

Zero

P2

Figure 4 Front panel of M-NESTPR

The M-NESTPR, M-NETPR, and M-NESTR modules contain three main PC boards, the STP board,
the ECG board, and the NIBP board. They work independently. Each of these has their own
processor and software EPROM.

The M-NE12STPR, M-NE12TPR, and M-NE12STR contain three main PC boards, The STP board,
the ECG board and the NIBP board. They work independently. Each of them has their own
processor. The STP board and NIBP board have software EPROM. In the ECG board the software is
in flash memory. The STP and NIBP boards are the same as in M-NESTPR module but the ECG
board and ECG input board are different.

12

Document No. 8001008-6

In the M-NESTPR module, there are two small boards, the SP input and the ECG input board
attached to the front panel of the module. The front panel has seven connectors and four keys. The
connectors are two for temperature measurement, two for invasive blood pressure measurement,
one for ECG, one for NIBP, and one for SpO

measurement. The keys are for NIBP Auto On/Off,

2

NIBP Start/Cancel, P1 zero, and P2 zero. The structure of M-NE12STPR is similar except the ECG
board and ECG input board are different.

In the M-NETPR module, there are two small boards, the 2P input board and the ECG input board,
attached to the front panel of the module. The front panel has six connectors and four keys. The

connectors are two for temperature measurement, two for invasive blood pressure measurement,
one for ECG, and one for NIBP. The keys are for Auto On/Off, Start/Cancel, P1 zero, and P2 zero.
The structure of M-NE12TPR is similar except the ECG board and ECG input board are different.

In the M-NESTR module, there are two small boards, the ECG input board and the S input board,
attached to the front panel of the module. The front panel has five connectors and two keys. The
connectors are two for temperature measurement, and one for SpO
and one for NIBP. The keys are for Auto On/Off, Start/Cancel. The structure of M-NE12STR is
similar except the ECG board and ECG input board are different.

2.2.3 NIBP board

Cuff

Zero

valve

Exhaust

valve 2

Joining chamber

Exhaust valve 1

Check valve

Bleed valve

Pump

S/5 Hemodynamic modules

measurement, one for ECG,

2

Pump

and

valve

M

driver

B1 B2

to/from module bus

X

Pressure
transducers

converter

Power-up

reset

RS485

1

EEPROM

(calibration

Figure 5 NIBP board functional block diagram

Pressure transducers

The NIBP board contains two pressure transducers. They are of piezoresistive type. One is used for
measuring the pressure of the blood pressure cuff and the pressure fluctuations caused by arterial
wall movement (B1). The other is used for detection of cuff hose type, cuff loose and cuff occlusion
situations etc. (B2). The transducers are internally temperature compensated. They are supplied by
a constant voltage and their output voltage changes up to 40 mV max. (50 kPa, 375 mmHg).

AD-

interf.

data)

Write protection switch

Overpressure control

CPU

80C51FA

Internal

watchdog

Address
decoder

Address

latch

Address bus

Watchdog

timer

RAM EPROM

Databus

+15 VD

Front
panel

keys

Software

control

NESTPR_NIBP_board_blck_dgrm .vsd

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Signal processing

Two signals from the pressure transducers are amplified and sent to the A/D converter. After the
converter, digitized signals are sent to the microprocessor for data processing. Before the
converter, one of the signals is used to adjust the offset to the pressure safety level.

The NIBP board is controlled with a 80C51FA microprocessor at 16 MHz oscillator frequency.

Memory

NIBP program memory (EPROM) size is 128k × 8. RAM size is 32k × 8 bit and it stores variable
values of the NIBP measurement. EEPROM is size 64 × 16 bit and is used to store the calibration
values for the pressure transducers, the pulse valve constants gained during measurements, the
PC board identification, and module serial number.

Software control

Software controls valves and pump. In addition to the individual on/off signals for each component
there is a common power switch for the valves and the pump that can be used at pump/valve
failures.

In addition to external RS485 reset line the microprocessor system is equipped with its own power­up reset. See the section in the ECG board’s description: “RS485 communication”

Watchdog timer

The NIBP board is equipped with a software independent safety circuit to disconnect supply
voltages from the pump and the valves if the cuff has been pressurized longer than the preset time.
As soon as the cuff pressure rises over a specified pressure limit, timer starts counting. The timer is
adjusted to stop the pump and open the valves after 2 minutes 10 seconds in adult/child mode
and after 1 minute 5 seconds in infant mode.

Valves

Exhaust valves are used for emptying the cuff and the joining chamber after the measurement.
Exhaust valve 1 is also used as safety valve in infant mode. The valve opens at 165 mmHg. Exhaust
valve 2 is also used as safety valve in adult mode and opens at 320 mmHg.
The bleed valve is used for emptying the cuff during measurement. The zero valve is used for
connecting the pressure transducer B1 to open air.

Power supply section

All connections are established via 25-pin connector (D-type, female). The module needs +5 V,
±15 V, and +15 VD (dirty) power supply to operate. The pump and the valves use separate +15 VD
power line. The supply voltages are generated in the power supply section of the S/5 monitor. The
reference voltages ±5 V

and +10 V

ref

are generated on the NIBP board.

ref

14

Document No. 8001008-6

2.2.4 ECG board in 3-and 5-lead measurement

Patient signals are connected to overload protection circuits (resistors and gas-filled surge
arresters) and analog switches to instrumentation amplifiers. Then the signals are amplified by 480
and limited by slew rate. Then they are A/D-converted, analyzed and transferred to module bus in
digital form.

PATIENT

Overload protection

RL F CN

Defibrillation

detector

uP

uP

uP

Slew-rate

detector

HP

filter

Anti­alias

Analog switches

Slew-rate

detector

uP

HP

filter

uP

Anti­alias

uP

uP

Slew-rate

detector

HP

filter

Anti­alias

uP

uP

Slew-rate

detector

HP

filter

Anti­alias

S/5 Hemodynamic modules

Lead selection logic

controlled by ECG lead selection

signals from uP

Resp

amplifier

Sync. Rectifier

31 kHz

from uP

Figure 6 3- and 5- lead ECG board block diagram

Analog ECG section

The ECG cable is connected to connector pins E1 to E6 on the input board which contains an
overload protection circuit. Leads are connected to amplifiers via analog switches. States of the
switches depend on the cable type. Lead-off, noise and pacemaker are detected by a slew rate

ISOLATION

Supply

voltages

Power

source

Power

source

Opto-

coupler

Opto-

coupler

to STP Board

Amplifier

A/D

Micro-

processor

(uP)

Direct

ECG

Direct

ECG

NESTPR_ECG_brd_blck_dgrm.vsd

15

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

detector. Lower frequency is determined by high pass (HP) filter 0.5 Hz (monitor bandwidth) or

0.05 Hz (diagnostic or ST- bandwidth).

Respiration section

3-lead cable The analog switches control the current supply source of the impedance respiration measurement,

and the lead selection for the 3-lead cable can be seen from the following table:

Table 2 Lead selection and coding for the 3-lead cable

Selected lead Current source between Signal measured from

IR - L N

II R - N L

III L - N R

Position on

IEC standard coding AAMI standard coding

body surface

right arm R = red RA = white

left arm L = yellow LA = black

left leg F = green LL = red

5-lead cable When the 5-lead cable is used, the current source is between L-F and the signal is measured from

the N, independently on the lead selection.

The respiration amplifier consist of the operational amplifiers, and the components around them.
There is an analog switch for controlling the gain of the first stage of the preamplifier. Synchronous
rectifier consists of the analog switches, which are used for detecting the respiration signal from 31
kHz amplitude modulated raw signal. The amplifier stage consists of the differential amplifier and
the last amplifier. The differential amplifier consists of the operational amplifiers and the
components around them. This stage is AC-coupled on both sides for minimising the offset
voltages. The last amplifier is used for amplifying the signal derived from differential amplifier
stage. The respiration signal is zeroed at the beginning of the measurement. Zeroing is also used
for fast recovering the measurement after the motion artefact. This is done in amplifier section.

NOTE: The respiration measurement is switched OFF for 20 seconds when defibrillation is detected
at the defibrillation detector.

Microprocessor section

Microprocessor contains RAM and EPROM memories. The processor uses external EEPROM
memory. The microprocessor’s internal 8-channel A/D-converter converts the ECG-signals to
digital form. See the section in ECG board’s description: “RS485 communication

Serial communication

Communication with the module bus is made through RXD and TXD pins. See the section in STP
board’s description: “Serial communication”.

16

Document No. 8001008-6

S/5 Hemodynamic modules

Isolated section

The patient isolation of ECG is 5 kV.

NOTE: The isolation has been changed from the earlier revisions.

WARNING Do not touch battery-operated monitor during defibrillation procedure.

See the “Isolated section” in STP board description.

Power supply section

See the “Power supply section” in STP board description.
There is a test connector (X20) on the board for voltages +5 VREF, +5 V, +12 V, GND and -12 V.

2.2.5 ECG board in 12-lead measurement

The 12-lead ECG measurement consists of the functions, which are shown in the figure 7. All
functions are located in the ECG board except the front panel connector and the ECG input board.

Front panel connector and
ECG input board

Input protection and filtering

Respiration
impedance
amplifiers

RS 485
communication

Respiration
impedance
supply

ECG CPU

Power
supply

ECG preamplifiers

ECG amplifiers

and

Baseline

restoration

NV memory

Pacer

detection

Isolation

to STP board

Isolation

Figure 7 12-lead ECG measurement block diagram

17

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

Front panel connector and ECG input board

The connector for the 12-lead ECG cable is a green 12 pin Nicolay type connector. 3- or 5-lead
cables with blue connectors cannot be connected to this connector. The ECG input board contains
high voltage resistors and a connector for ECG board.

Input protection and filtering

The input protection is implemented with protection diodes, which are connected to analog power
supply voltage and ground. The input filtering for ECG measurement is done with discrete
components. The measured signal is AC-coupled for respiration measurement. The signal from the
respiration supply is AC coupled. There are also the overload protection diodes for respiration
measurement supply.

ECG preamplifiers

The buffer amplifiers are used for each lead except N/RL. The leads off detection is implemented
by measuring the level of the input buffer amplifiers with A/D converter of CPU. The ECG signals are
measured using differential amplifiers.

ECG amplifiers and baseline restoration

The function of the ECG amplifiers and baseline restoration is to amplify the signal and to restore
the baseline of the signal in the middle of the display after the change of the signal level e.g. after
the change of the DC offset voltage.

Pacer detection

Pacer detection has been made by using two slew rate detector circuits. The pacer detection
amplifiers have been realized at the front of the slew rate detectors independently from the ECG
measuring channels.

Respiration impedance supply

The 62.5 kHz sine wave generator is used as the respiration measurement signal supply. Analog
switches are used for connecting the sine wave to the ECG leads to be measured.

Respiration impedance amplifiers

Buffer amplifiers are used in respiration measurement. Analog switches are used for selecting the
measurement leads. There are also additional amplifiers for increasing the respiration signal gain.
Respiration is always measured between R and F, independently on the ECG lead selection.

ECG CPU

18

Document No. 8001008-6

The CPU is a 16 bit H8/3048 single-chip microcomputer. It contains 128 kbytes of flash memory
and 4 kbytes of RAM. The clock frequency is 16 MHz.

RS485 communication

The communication to the CPU board of the monitor uses RS485 protocol. The RS485 driver
circuits are optically isolated from the processor of the module. PWM signal is used for direct ECG
signal. Direct ECG signal is available from the X2 connector of the UPI board or from the PT module.

Power supply

The ECG board has a driver controlled half bridge switching power supply with 5 kV isolation. The
supply voltages have been regulated with linear regulators.

2.2.6 ECG filtering

The S/5 monitors have three ECG filtering modes:

MONITORING 0.5 to 30 Hz (with 50 Hz reject filter)

DIAGNOSTIC 12-lead ECG 0.05 to 150 Hz
DIAGNOSTIC other modules 0.05 to 100 Hz

S/5 Hemodynamic modules

0.5 to 40 Hz (with 60 Hz reject filter)

ST FILTER 0.05 to 30 Hz (with 50 Hz reject filter)

0.05 to 40 Hz (with 60 Hz reject filter)

The purpose of filtering is to reduce high frequency noise and low frequency (e.g. respiratory)
movement artifacts.

Monitor filter is used in normal monitoring. Diagnostic filter is used if more accurate diagnostic
information is needed. ST filter gives more accurate information of ST segment, but reduces high
frequency noise.

The high-pass filters 0.5 Hz and 0.05 Hz are done with hardware. The monitor sends a command to
the hemodynamic module determining which of the corner frequencies 0.5 Hz or 0.05 Hz is to be
used.

The 50 Hz and 60 Hz reject filters are both low-pass filters with zero at 50 Hz or 60 Hz
correspondingly and they are done with software. They are for the mains supply filtering. When
these filters are used, 3 dB value for low-pass filter is 30 Hz or 40 Hz.

In diagnostic mode the upper frequency is limited by hardware and the -3 dB frequency is 100 Hz
for 3 or 5 lead ECG measurement. For 12 lead ECG the upper frequency is 150 Hz and it is limited
by software.

19

Document No. 8001008-6

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2.2.7 STP board

Patient connectors

Front panel

keys

Power

isolation

section

Isolation

transformer

measuring

Temp AD

TEMP

unit

Press AD

AD-converter

- 8 chn

- 12 bit

µprocessor unit

RAM internal 2K

external 16K

EPROM 48K

RS communication

Patient isolation

INV PRESS
measuring

unit

Pox AD

Serial device communication

POX pre­amplifier

POX
gain

control

Red

measuring

Module
bus
data

Reset

ed
IR

Opto

isolation

g

rin

su

ea
m

Intensities

Non volatile

memory

ver

i

Ds dr

ox LE
P

Figure 8 STP board block diagram

Microprocessor unit

An Intel 80C196KC-16 processor is used. There are external memories, an 8-bit data bus, a 16
MHz oscillator, an open collector reset, and a watchdog timer. Three A/D-converters within the
processor are used. The processor’s internal UART communicates with the CPU board.

High speed I/O is used to obtain pulse control sequence necessary for pulse oximetry
measurement. It gets its timing clock from the oscillator.

20

Document No. 8001008-6

Power

non-isolation

section

Power for

module

Power

reset

Power for

Communication

Module bus connector or

connector to NIBP Board (NESTPR)

Module reset Module data

RS485 Driver

for module

reset

RS485 Driver

for data

NESTPR_STP_brd_blck_dgrm.vsd

Temperature measurement unit

The value of the NTC-resistor in the probe depends on the patient’s temperature. It is measured
with the following principle described below.

The temperature signal(s) is produced by voltage dividers, part of which is the patient probe (YSI
400-series thermistor). The output is amplified by the calibrated amplifier(s) whose offset voltage
makes its output spread on both sides of zero. A wider output range (measurement range) means
better resolution.

0°C

=> 7K357
15 °C => 3K541
25 °C => 2K253
38 °C => 1K301
45 °C => 984R1

NTC

+5V

S/5 Hemodynamic modules

reference

A1

to AD
converter

Figure 9 Temperature measurement principle

Invasive blood pressure measurement unit

An isolated +5 V voltage is supplied to the pressure transducer. From the bridge connection a
differential voltage, which depends on pressure and supplied voltage, is calculated (see the
formula below).

= Uin × pressure × 5 V, where Uin is 5 V

U

out

= 25 V × pressure [mmHg]

Þ U

out

Pressure amplification is realized in the instrumentation amplifier. The gain of the amplifier is set so
that the level of the signal transferred to A/D converter stays within the measurement range even
when there are circumstantial offsets or offsets caused by the transducer. There is a filter before the
amplifier to attenuate high frequency disturbances.

Vin

Pressure
transducer

offset

NESTPR_temp_meas_princ.vsd

Instrumentation
amplifier

Vout

Input
Filter

Figure 10 Pressure measurement principle

G

to AD converter

pressure_meas_principle.vsd

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Pulse oximetry measurement section

I=5-350mA

Probe

Preamplifier
Current - to - Voltage
converter

LED driving circuit

Level of LED current
measurement and
feedback circuit

G =1/4096-1

Digitally controlled
attenuator

Amplifier

IRed LED intensity
adjustment

Red LED intensity
adjustment

Level of LED current indication (to CPU)

IR DC level

G = 275

Two step
AC amplifier

G =16
or 63

G =16
or 63

IRed AC signal

for NESTPR
G =18
or 125

Red AC signal

Red DC level

Figure 11 Pulse oximetry measurement block diagram

LED control signals

The processor sends pulse width modulated signals, IRED intensity and RED intensity, which are
converted to DC voltages and filtered. Using switches either RED or IRED intensity is sent to the
amplifier in LED driving circuit.

LED driving circuit

The voltage difference which corresponds to LED current, is measured by the differential amplifier
circuit and its output is sent back to the processor in 0 to 5 V level. There are feedback circuits from
LED current measurement and LED intensity control.

Background light is measured by picking up a sample from the signal. The sample is modified to 0
to 5 V level and sent to the processor.

Measured signal preamplification

The preamplifier is current-to-voltage converter with gain selection. A higher gain is used for
measuring thin tissue.

Digitally controlled amplifier

22

Document No. 8001008-6

The D/A converter is a digitally controlled amplifier after which there is another constant amplifier.

Red and infrared channel separation

Red and infrared channels are separated from each other by switches. An operational amplifier
functions as a buffer and after this the infrared DC signal is sent to the processor. A capacitor
separates theC signal from the DC and the AC signal is sent to the processor after amplification.
There is a switch to choose the amplification constant.

Serial communication

Serial communication between the module and the frame is done by an RS485 type bus whose
buffers get their supply voltage (+5 VDC) from the frame and in the isolation section get the supply
voltage (+5 V) from the isolated power supply.

The serial communication buffers are controlled by a Reset signal so that when the Reset is active,
the buffer does not transfer data.

Reset is also RS485 type and additionally, there is an auxiliary logic power reset, which keeps the
reset active for about 500 ms despite the state of reset in the module bus. Time constant
determines the power-up reset time. There are components to prevent the module from sending
data during reset. Data transmission rate is 500 kbps.

S/5 Hemodynamic modules

NIBP Board

or
s

send/receive

dule proses
o

m

STP Board

r

osesso
r

send/receive

le p

du
o

m

ECG Board

ssor

se

send/ recei ve

Receive data

Send d ata

Res et

Rece ive dat a
Send data

Res et

Rec ei ve da ta

Send data

Res et

Opto isolation

PatientIso

Opto isolation

n
tio

la

Receive data

Send data

Rese t

Recei ve d ata

Send data

connector for ECG board

Rec ei ve d at a

Send dat a

send/recei ve

Res e t

Res et

RS485
Dri ver

send/receive

RS485
Dri ver

RS4 85
Dri v er

send/r eceiv e

RS4 85
Dri v er

Dat a

NDat a

Rese t in

NRes et in

Dat a

NDat a

Rese t i n

NRes et i n

connector for STP boardconnector for NIBP board

module bus connector

module pro

t
n
e
ti

Isolation

Pa

connector for STP board

Figure 12 Serial communication and opto isolation of M-NESTPR/-NE12STPR

Document No. 8001008-6

23

Datex-Ohmeda S/5 monitors

STP Board

send/receive

module processor

ECG Board

send/receive

module processor

Receive data
Send data

Res et

Receive data

Send data

Res et

Opto isolation

Patient

Opto isolation

Patient

isolation

isolation

Receive data

Send data

connector for ECG board

Recei ve dat

Send data

send/receive

Reset

Rese t

RS485
Driver

send/receive

RS485
Driver

Connector for STP board

Data

NDat a

Reset in

NRese t in

Connector for ECG board

module bus connector

Figure 13 Serial communication and opto isolation of M-ESTPR

Isolated section

There are two opto isolators. The signal is processed on a logical high-low level even though the
outputs of the opto isolators are analog signals in the isolated section.

The reset line is an open collector type with a pull-up resistor. Thus the processor is able to use its
internal watch-dog function.

Power supply section

The isolated supply voltage of the module is developed from +15 Vdirty voltage from the Central
Unit. The power supply is a switched-mode circuit, where the FET transistor switch is controlled by
an oscillator using bipolar timer. The frequency of the oscillator is about 30 kHz and pulse ratio 50
%. Controlling the FET switch is slowed to suppress spurious interference.

A special pulse transformer is used in the circuit. In the secondary circuit normal linear regulators
are used except for +5 V (low drop type linear regulator).

24

Document No. 8001008-6

2.3 Connectors and signals

2.3.1 Module bus connector

S/5 Hemodynamic modules

13

25

1

14

Figure 14 Module bus connector (X1) pin layout

Table 3 Module bus connector description

Pin No I/O Signal Note

1 I RESET_RS485

2 I -15 VDC ∗∗

3 I +15 VDIRTY

4 I +15 VDC ∗∗

5 I/O -DATA_RS485

6 I/O DATA_RS485

7 Ground & Shield

8 I -RESET_RS485

9 I CTSB ∗

10 O RTSB ∗

11 I RXDB ∗

12 O TXDB ∗

13 Ground & Shield

14 I +32 VDIRTY ∗

15 I GroundDIRTY

16 I CTSC ∗

17 O RTSC ∗

18 I RXDC ∗

19 O TXDC ∗

20 ON/STANDBY ∗

21 O PWM_ECG

22 RXDD_RS232 ∗

23 TXDD_RS232 ∗

24 I +5 VDC

25 I +5 VDC

∗ = Not used
∗∗ = Used only by M-ESTPR, M-ETPR, M-ESTR and M-NIBP modules

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Document No. 8001008-6

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2.3.2 Front panel connectors

Table 4 Front panel connectors

12-lead ECG connector Temp connector (T1, T2)

8

1

2

3

Pin No Signal Pin No Signal

1

Right arm electrode (R)

2

Left arm electrode (L)

3

N

4

Left leg electrode (F)

5

Chest electrode (C1)

6

Chest electrode (C2)

7

Chest electrode (C3)

8

Chest electrode (C4)

9

Chest electrode (C5)

10

11

12

Chest electrode (C6)

Cable type

Ground

9

101112

45

7

6

1

Temperature probe

2

Temperature probe

ECG connector (ECG) SpO2 connector (SpO2) Invasive blood pressure

connectors (P1, P2)

6

3

1

2

9

4

7

0

5

8

6

3

1

2

9

4

7

0

5

8

3

1

4

2

5

Pin No Signal Pin No Signal Pin No Signal

10

1

Right arm electrode (R)

2

Left arm electrode (L)

3

Right leg electrode (RL)

4

Left leg electrode (F)

5

Chest electrode (C)

6

Cable shield

7

Not connected

8

3/5 lead identification

9

Lead connection check

Ground

10

1

Feedback resistor

2

Ground

3

Not Connected

4

Cable shield +
probe identification ground

5

Probe identification

6

LED drive ground

7

LED drive current

8

Input signal current

9

Ground

Ground

10

1

Pressure +

2

Pressure -

3

Polarisation - (ground)

4

Polarisation +

5

Not connected

6

Not connected

7

Not connected

8

Not connected

9

Ground

Cable detection

6

9

7

0

8

26

Document No. 8001008-6

2.3.3 Test points on boards

12-lead ECG board

X

2

0

1

n

o

n

f

l

o

d

n

g

1

5

+

1

6
8

5

+

1

v

S/5 Hemodynamic modules

d

a

o

r

b

G

C

d

E

l

a

2

e

1

­t

s

i

d

c

o

m

p

g

a

t

i

n

Y

T

v

I

D

R

o

e

n

e

n

NIBP board

2

X

3

1

f

l

o

a

t

i

n

g

1

G

N

D

l

o

6

5

+

G

0

1

g

a

n

V

a

D

N

NESTPR_12-lead_ECG_board.vsd

X

0

1

X

f
1
2

1

9

6

l

o

a

t

i

n

g

-

5

V

2

.

+

5

V

1

4

f

l

o

a

t

i

n

g
1
2

.

5

+

V

d

i

g

There are test pad blocks on solder side. X8 and X6 pads and voltages are:

X8

10 o o o o o 2

9 o o o o o 1

X6

X5

X7

X8

X6

1 2
o o
o o
o o
o o
8 7

nibp_text_conn_in_nestpr.vsd

X8 X6

Pin No Signal Pin No Signal

1 GND 1 GND

2 WD out 2 A1 output

3 reset 3 - 5 V

4 +5 V 4 +5 V ref

5 +15 V dirty 5 B1 out - (A1 input)

6 +15 V 6 B1 out +

7 -15 V 7 B2 out +

8- 8B2 out -

9-

10 GND

27

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Datex-Ohmeda S/5 monitors

ECG and STP board

There are identical test pin blocks both on STP and ECG boards. Pins and voltages are as follows:

ESTPR

NESTPR

X11 pin 1 +5 Vref

pin 2 +5 V

pin 3 +12 V

pin 4 Gnd

pin 5 -12 V

X12 pin 1 -5 V (STP board only)

X11 pin 1 +5 Vref

pin 2 +5 V

pin 3 +7 V

pin 4 Gnd

pin 5 -7 V

X12 pin 1 -5 V (STP board only)

X11

X11

X12

X12

28

Document No. 8001008-6

S/5 Hemodynamic modules

3 SERVICE PROCEDURES

3.1 General service information

Field service of the hemodynamic modules is limited to replacing faulty printed circuit boards or
mechanical parts. Faulty printed circuit boards should be returned to Datex-Ohmeda for repair.

Datex-Ohmeda is always available for service advice. Please provide the unit serial number, full
type designation, and a detailed description of the fault.

CAUTION Only trained personnel with appropriate equipment should perform the tests and repairs outlined in

this section. Unauthorized service may void warranty of the unit.

3.2 Service check

These instructions include complete procedures for a service check. The service check should be
performed after any service repair, however, the service check procedures can also be used for
determining possible failures.

The procedures should be performed in ascending order.

The instructions include a check form (Appendix A) which should be filled in when performing the
procedures.

The mark

check form.

? in the instructions means that the performed procedure should be signed in the

3.2.1 Recommended tools

Tool Order No. Notes

Patient simulator -

Pressure manometer -

Temperature test set 884515

3-lead ECG trunk cable

5-lead ECG cable

10-leadwire ECG cable

SpO2 finger probe OXY-F4-N or SAS-F4

InvBP transducer

Adult NIBP cuff & hose

Infant NIBP cuff & hose

Screwdriver

3.2.2 Recommended parts

Part Order No. Notes

NIBP pump filter 57142

29

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

All modules

Detach the module box by removing the two screws from the back of the module. Be careful with
loose latch and spring pin for locking.

1. Check internal parts:

− screws are tightened properly

− cables are connected properly

− all IC’s that are on sockets are attached properly

− EMC covers are attached properly

− there are no loose objects inside the module

?

2. Check external parts:

− the front cover and the front panel sticker are intact

− all connectors are intact and are attached properly

− the module box, the latch and the spring pin are intact

?

3. Replace the NIBP pump filter in NE12STPR/NE12TPR/NE12STR/NESTPR/NETPR/NESTR

modules, if necessary.

?

• Reattach the module box and check that the latch is moving properly.

• Switch the monitor on and wait until the monitoring screen appears. Configure the monitor

screen so that all the needed parameters are shown, for example as follows:

Monitor Setup - Waveform Fields - Field 1 - ECG1

Field 2 - ECG2
Field 3 - P1
Field 4 - P2
Field 5 - Pleth
Field 6 - Resp

Digit Fields - Lower Field 2 - NIBP

Lower Field 3 - T1+T2

30

Document No. 8001008-6

S/5 Hemodynamic modules

4. Plug in the module. Check that it goes in smoothly and locks up properly

?

5. Check that the module is recognized, i.e. all needed parameter information, except invasive

blood pressure, starts to show on the screen.

?

Preset ECG, Respiration, InvBP and SpO2 measurement settings:

ECG - ECG Setup - Hr Source - Auto

Pacemaker - Show

Others - Resp Setup - Size - 1.0

Resp Rate Source - Auto
Measurement - On
Detection Limit - Auto

Invasive Pressures - P1 ‘Art’ Setup - Label - Art

P2 ‘Cvp’ Setup - Label - Cvp

ECG measurement

6. Enter the service menu:

7. Enter the ESTP : ECG service menu:

8. Check the front panel membrane key ECG Lead (not available in NE12STPR/NESTPR type

Pulse Oximetry - Pleth Scale - Auto

Monitor Setup - Install/Service (password 16-4-34) -

Service (password 26-23-8) - Parameters

Take down the information regarding module software by selecting Scroll Vers and turning
the ComWheel.

?

Check that the ‘Timeouts’, ‘Bad checksums’ and ‘Bad c-s by mod’ values are not increasing
faster than by 5 per second. Check also that the ECG/RESP board memories have passed the
internal memory test, i.e. the ‘RAM’, ‘ROM’ and ‘EEPROM’ state all OK.

?

modules).
Press the key at least for two seconds. Check that the selected ECG lead is changing on the
screen and the state for ‘Button’ in the service menu.

?

31

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Datex-Ohmeda S/5 monitors

9. Check that the power frequency value has been set according to the current mains power

frequency. Change the setting by selecting Power Freq, if necessary.

?

10. @ M-ESTPR, M-ETPR , M-ESTR, M-NESTPR, M-NETPR and M-NESTR modules: connect a 5-

lead ECG cable to the module. Check that the ‘Cable type’ shows 5 lead. If it shows 3 lead,
make sure the used 5-lead ECG cable contains the necessary wiring for cable recognition
(pins 0, 8 and 9 connected together).

@ M-NE12STPR, M-NE12TPR and M-NE12STR modules: connect a 10-leadwire ECG cable
to the module. Connect limb lead electrodes and one electrode from the chest lead set to
the same potential. Check that the ‘Cable type’ shows 10 lead.

?

11. Connect a 3-lead ECG trunk cable without a lead set to the module. Check that the

message "Leads off" is displayed on the screen.

?

12. Check that all the electrodes show OFF in the service menu and the message ‘Leads Off’ is

shown on the screen.

Connect all the leads together, for example to a suitable screwdriver. Check that all the
electrodes show ON and the message ‘Asystole’ appears.

Disconnect one of the leads and check that the corresponding electrode in the service
menu shows OFF within 10 seconds from the disconnection, then reconnect the lead.
Check the rest of the leads using the same method.

NOTE: When the ground lead (black) is disconnected all the electrodes should show OFF.

NOTE: The ‘Asystole’ and ‘Different leads off’ messages are shown using certain priority, so
even one of the leads is disconnected, the lead related ‘Leads off’ message may not appear
onto the screen.

NOTE: When RA, LA or LL electrode is disconnected, all six V electrodes show OFF.

NOTE: With NESTPR/ESTPR type modules and 5 lead cable the state of V2, V3, V4, V5 and
V6 electrodes follow the state of the V electrode.

?

32

Document No. 8001008-6

13. Connect the leads to a patient simulator.

The settings and checks with Dynatech Nevada MedSim 300 Patient Simulator:

ECG - BASE - BPM - 160
PACE - WAVE - NSR

Check that normal ECG waveform is shown, the HR -value is 160 (±5) and the ‘Pacer count’

-value is not increasing in the service menu. Check the lead selections by pressing

ECG Lead key on the module (not available in NE12STPR/NESTPR type modules).

the

ECG - PACE - WAVE - ASNC

Check that pacemaker spikes are shown on the ECG waveform, the ‘HR’ -value changes to
75 (±5) and the ‘Pacer count’ -value is increasing according to shown pacemaker spikes.

Set the pacemaker option off:

ECG - PACE - WAVE - NSR

?

Respiration measurement

13. Check that the ‘Resp Available’ and ‘RESP Measurement’ show both ON in the ESTP: ECG

service menu.

?

14. Check the respiration measurement with a patient simulator.

S/5 Hemodynamic modules

The settings and checks with Dynatech Nevada MedSim 300 Patient Simulator:

BASELINE IMPEDANCE -switch - 500
LEAD SELECT-switch - II/RL-LL

RESP - WAVE - NORM

RATE - 20
OHMS - 1.0
RATIO - 1/1
APNEA - OFF
SHIFT - OFF

Check that the RESP waveform is shown and the ‘RR’ -value is 20 (±5). Change the position
of the BASELINE IMPEDANCE -switch and check that appropriate RESP waveform and ‘RR’ ­value are shown again within 30 seconds.

RESP - APNEA - 32 S

Check that the monitor gives the APNEA -alarm.

NOTE: Make sure that only the ECG leads are connected to the simulator during the apnea ­test. If other cables are connected at the same time, the respiration signal from the
simulator may be disturbed, and therefore, the APNEA -alarm may not be activated.

NOTE: When you have ECG service menu open, spikes will appear on the respiration
waveform. These spikes represent the threshold level for detecting inspiration and
expiration.

?

Document No. 8001008-6

33

Datex-Ohmeda S/5 monitors

Temperature measurement

15. Enter the ESTP : STP service menu:

Parameters - ESTP : STP

Check that the ‘Timeouts’, ‘Bad checksums’ and ‘Bad c-s by mod’ values are not increasing
faster than by 5 per second. Check also that the STP board memories have passed the
internal memory test, i.e. the ‘RAM’, ‘ROM’ and ‘EEPROM’ show all OK.

?

16. Check that the ‘Cable’ and ‘Probe’ show OFF for both channels, T1 and T2, when no probes

are connected.

Connect a temperature test plug into the connector T1. Check that the ‘Cable’ and ‘Probe’
for T1 show ON and the corresponding temperature value appears onto the monitor screen.
Perform the same check also for the channel T2.

?

17. Check the temperature calibrations using temperature test plugs.

If the deviation on a temperature reading on the screen is more than 0.1 °C, calibrate the
temperature channels according to the instructions in the chapter 3.4.3 Temperature

calibration.

?

18. Activate the temperature test by selecting Temp Test from the menu and pressing the

ComWheel twice. When the message ‘Performing temp test’ disappears from the digit field,
check that no error messages appear and ‘Temp error’ shows OFF for both channels in the
service menu.

?

19. Check that the module configuration has been set correctly. The configuration in use is

shown beside the text ‘Configuration’ in the service menu and it can be either STP, ST or TP.
Change the configuration in the Calibrations menu, if necessary.

?

Invasive blood pressure measurement

20. Check the front panel membrane keys that are related to the InvBP or temperature

measurement.
Press each of the keys at least for one second. Check that the pressed key is identified, i.e.
one of the texts for ‘Buttons’ changes from OFF to ON in the service menu.

34

Document No. 8001008-6

?

21. Check that the ‘Cable’ and ‘Probe’ for P1 show OFF. Plug a cable with an invasive blood

pressure transducer into the front panel connector P1 and check that the ‘Cable’ and

S/5 Hemodynamic modules

‘Probe’ show ON and the corresponding pressure waveform appears onto the screen.

Perform the same check also for the InvBP channel P2.

?

22. Calibrate the InvBP channels P1 and P2 according to the instructions in the chapter 3.4.4.

Invasive pressure calibration

?

23. Check the InvBP channels with a patient simulator.

The settings and checks with Dynatech Nevada MedSim 300 Patient Simulator:

SENSITIVITY -switch - 5 µV/V/mmHg

ECG - BASE - BPM - 60 - BP - 1 - WAVE - ATM

2 - WAVE - ATM

SpO2 measurement

24. Check that the message ‘No probe’ is shown when no SpO2 sensor is connected to the

Restore the normal monitoring screen by pressing the key Normal Screen.

Connect cables from the channels BP1 and BP2 to the module connectors P1 and P2. Zero
the InvBP channels by pressing the keys ZERO P1 and ZERO P2 on the module front panel.

BP - 1 - WAVE - ART
2 - WAVE - CVP

Check that appropriate InvBP waveforms are shown and the InvBP values are approximately
120/80 (±3 mmHg) for the channel P1 and 15/10 (±2 mmHg) for the channel P2.

Check that HR- value is calculated from P1 when ECG is not measured (ECG cable
disconnected).

?

module. Connect a SpO
shown when the probe is not connected to a finger.

finger probe to the module. Check that the message ‘Probe off’ is

2

?

25. Connect the SpO2 probe onto your finger. Check that the reading of

95-99 and SpO
and InvBP (P1) are not measured.

waveform appear. Check that HR- value is calculated from SpO2 when ECG

2

?

35

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

Non Invasive Blood Pressure measurement

26. Enter the NIBP module service menu:

Parameters - NIBP

Check that the ‘Timeouts’, ‘Bad checksums’ and ‘Bad c-s by mod’ values are not increasing
faster than by 5 per second. Check also that the NIBP board memories have passed the
internal memory test, i.e. the ‘RAM’, ‘ROM’ and ‘EEPROM’ show all OK.

?

27. Check the front panel membrane keys.

Select Buttons/Leds.

Press each of the two NIBP related membrane keys at least for one second. Check that the
pressed key is identified, i.e. the corresponding text changes from OFF to ON in the menu.

?

28. Check the pump and valves.

Highlight Pneumatics from the NIBP menu. Connect a pressure manometer to the NIBP
module cuff connector.

Select Start Pump and press the ComWheel. Check that the pump turns on and the
pressure inside the tubing system starts to increase. Stop the pump by pressing the
ComWheel again when the pressure reaches 280 mmHg.

Highlight Open Exh1. Press the ComWheel and check that the pressure inside the tubing
system starts to drop then press the ComWheel again. Check the other exhaust valve by the
same way by selecting Open Exh2 from the menu.
If necessary, turn the pump on again for a moment to increase the pressure inside the
tubing system.

Highlight Set Valve. Press the ComWheel and set the value under the text ‘Pulse Valve’ to
number 150 by turning the ComWheel. Press the ComWheel again and check that the
pressure inside the tubing system starts to drop. Finish the test by selecting Previous Menu.

?

36

Document No. 8001008-6

S/5 Hemodynamic modules

29. Check the NIBP tubing system for leakages.

Select Calibrations from the NIBP service menu.

Connect the pressure manometer to the NIBP module cuff connector. Start the active leak
test from the menu by pressing the ComWheel. The module pumps a pressure of about 265
mmHg and then the pump stops.
Wait for 15 seconds for the pressure to stabilize then check that the pressure does not drop
more than 6 mmHg per one minute. Release the pressure by pressing the ComWheel once
more.

?

30. Calibration check.

Recalibrate the NIBP measurement according to the instructions in the chapter 3.4
Adjustment and Calibration. Calibration,Remember to set the calibration protection back
on after the calibration.

Disconnect the pressure manometer. Select Calibrations and then highlight Calibration
Check. Press the ComWheel and take down the zero offset values for both pressure
transducers, B1 and B2. The values should be within ±10 mmHg.

Connect the pressure manometer to the cuff connector and check the calibration with
pressures 100 mmHg, 200 mmHg and 260 mmHg. The zero offset value must be added to
the displayed pressure value in order to determine the real pressure.

?

31. Check the watchdog timer activation pressure.

Select Pneumatics from the NIBP service menu.

Keep the pressure manometer connected to the cuff connector. Pump up the pressure very
slowly and note the value on the manometer when your hear a signal from the loudspeaker.
The pressure at where the watchdog timer should activate with an audible signal is
13 mmHg (11 to 15 mmHg). Adjust the limit with the trimmer on the NIBP board, if
necessary.

?

37

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

32. Check the watchdog timer.

Select Watchdog from the NIBP service menu.

Check the watchdog timer in the adult mode. Activate the timer by highlighting Test ADULT
and then pressing the ComWheel. Check that the time beside the text ‘Watchdog Interval’
starts to run. Wait until you hear a signal from the loudspeaker and then check the time
again. The time from the adult test should fall within 120 to 140 seconds.

Check the watchdog timer also in the infant mode by first selecting Test INFANT from the
menu. The time from the infant test should fall within 60 to 70 seconds.

?

33. Check the safety valve.

Select Safety Valve from the NIBP service menu.
Keep the pressure manometer connected to the cuff connector.

NOTE: Make sure your pressure manometer can be used to measure pressures over 300
mmHg. If such a pressure manometer is not available, perform the check with an adult cuff
that is connected around some round object, for example a calibration gas bottle.

Highlight Start Test. Start the adult safety valve test by pressing the ComWheel. Wait until
the pump stops and the pressure is deflated. Check the pressure values ‘Max press’ and ‘2
s after stop’ for both transducers. All the values should be within 290 - 330 mmHg.

Highlight ADULT. Press the ComWheel and check that the text changes now to INFANT.
Select Start Test and wait until the pump stops and the pressure values on the screen have
been updated. Check that the values ‘Max press’ and ‘2 s after stop’ are all now within 154
to 165 mmHg.

Return to the normal monitoring mode by pressing

Normal Screen.

?

34. Connect an adult NIBP cuff to the cuff connector and disconnect one of its hoses.

Start NIBP measurement by pressing the key
the message ‘Cuff loose’ appears on the screen within 30 seconds.
Reconnect the hose and then bend it with your fingers. Restart the measurement and check
that the message ‘Cuff occlusion’ appears on the screen within 30 seconds.

Start/Cancel on the module and check that

?

Check that automatic inflation limits are in use:

38

Document No. 8001008-6

NIBP - NIBP Setup - Inflation Limits - Auto - Previous Menu

S/5 Hemodynamic modules

35. Connect the cuff onto your arm, highlight Start Ven.Stasis in the NIBP menu and press the

ComWheel. Check the module identifies the cuff, i.e. the text ‘Adult’ appears into the NIBP
digit field for a short moment.

Keep the pressure inside the cuff for about half a minute in order to find out that the cuff is
not leaking, then press the ComWheel again. Select

Normal Screen.

?

36. Keep the cuff on your arm and perform one NIBP measurement. Check that the module

gives a reasonable measuring result.

?

37. Connect an infant cuff to cuff connector and wrap it around your fingers.

Start NIBP measurement and check that the module identifies the cuff, i.e. the text ‘Infant’
appears into the NIBP digit field. Cancel the measurement after the cuff identification.

?

All modules

38. Perform electrical safety check and leakage current test.

?

39. Check that the module functions normally after the performed electrical safety check.

?

40. Clean the module with suitable detergent.

?

• Fill in all necessary documents.

39

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

3.3 Disassembly and reassembly

3.3.1 M-ESTPR, M-ESTR, and M-ETPR modules

Disassemble the M-ESTPR/-ESTR/-ETPR module in the following way. See the exploded view of
the module in 6.1.1.

1. Remove the two screws from the back of the module.

2. Pull the module box slowly rearwards and detach it from the main body. Be careful with

loose latch and spring pin for locking.

3. To detach the ECG board, remove four screws, disconnect the ribbon cable from the STP

board, and the ribbon cable from the front panel. Slide the board rearward to disconnect
the fixed 10-pin connector from the ECG input board.

4. To detach the STP board, remove two screws and disconnect the two connectors from the

SP input board. The T-input connector cables must be disconnected as well.

CAUTION When reassembling the module, make sure that all cables are reconnected

properly.

3.3.2 M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR modules

Disassemble the M-NE12STPR/-NE12STR/-NE12TPR/-NESTPR/-NESTR/-NETPR module in the
following way. See the exploded view of the module in 6.1.3.

1. Remove the two screws from the back of the module.

2. Pull the module box slowly rearwards and detach it from the main body. Be careful with

loose latch and spring pin for locking.

3. To detach the ECG board, detach four screws, disconnect ribbon cable from the STP board

(supply voltage), and ribbon cable from the ECG input board.

4. When the ECG board is removed, the STP board can be detached by removing four screws,

disconnecting the cable from the membrane keypad, the cable from the temperature
connectors, and cables from the SP input board. Also disconnect the NIBP hoses and the
ribbon cable from the NIBP board.

5. When the ECG board and the STP board are removed, the NIBP board can be detached by

removing four screws. The joining chamber can be detached by removing three screws and
disconnecting the hoses from the pressure transducers and the pump. The pump can be
detached by removing two screws. If the filter for the air inlet of the pump is removed, it
must be replaced.

40

Document No. 8001008-6

3.4 Adjustments and calibrations

3.4.1 Pressure safety level detection “OFFSET”

Remove two screws at the rear of the module. Remove the module box. Connect first the service
cable (e.g. a long Gas Interface Cable) to the module connector inside the monitor frame and then
to the rear connector of the module. Turn the monitor on. Enter to the NIBP service menu and select
Pneumatics. Pump reference pressure 13 mmHg into the module.
Adjust the trimmer until AD5 signal sign changes from negative to positive. Re-check the
adjustement, then lock the trimmer with for example nail polish.

3.4.2 NIBP calibrations

The electronics of the NIBP pressure measurement is calibrated at the factory. Zeroing pressure is
automatically maintained by the processor. If the zero point of the pressure transducer drifts more
than specified, an error message is given and the NIBP board should be recalibrated or replaced.

Check the NIBP measurement, and recalibrate if necessary , once a year. The checking and
recalibrating can be done in the NIBP service menu.

S/5 Hemodynamic modules

The calibration of the primary pressure channel can also be checked from the NIBP setup menu
(NIBP - NIBP Setup - Calibration Check). In this case the auto zeroing is performed at start ­remove hose before entering to ensure atmospheric pressure to the pressure transducers - the
primary pressure is displayed. The zero-offset value should then be zero.

Check the intake air filter as part of the calibration check.. Change the filter if it is visibly dirty.

Calibration check

1. Enter Calibration menu.

2. Select Calibration Check and press the ComWheel.

3. Connect an external precision manometer to the module.

41

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

4. Pump the following pressures to manometer and check the difference between the

manometer and monitor pressure display:

Table 5 NIBP calibration check pressures

Pressure Max. error Example

0 mmHg ±9 mmHg (=zero offset) -2

100 mmHg 100 + zero offset ±2 mmHg 98 ±2

200 mmHg 200 + zero offset ±3 mmHg 198 ±2

If the error of pressure channel B1 is larger than specified above, the module should be
recalibrated. The error of B2 is allowed to be even twice as large because it has no effect on blood
pressure measurement accuracy. However, we recommend recalibrating the module when the
error of B2 is larger than specified above to ensure best possible operation.

Calibration

1. Enter Calibration menu.

2. Remove hoses from front panel connector to enable proper zeroing.

3. Select Calibration. If it is not available, perform the steps A, B, and C.

NOTE: Do not pull out the NIBP module from the monitor frame. The module must be in the frame
during the whole procedure.

A. Turn the toggle switch at the bottom of the NIBP module to enable the calibration. Turn the

switch to the right by, for example, a sharp pencil. This enables menu selection Protection.
The message ‘Calibration switch ON!’ appears.

B. Select Protection OFF in the Calibration menu and press the ComWheel.

C. Return the toggle switch to the left. Menu selection Calibration is now enabled, and

Protection is disabled. When the calibration is enabled, a message ‘Calibration not
protected’ appears.

• Start Calibration by pressing the ComWheel. Messages ‘Zeroing’ and ‘Zeroed’ will appear in

the NIBP message field. After this a pressure bar will appear.

• Connect an external mercury manometer with pump to module through the both tubes of

the hose - both transducers B1 and B2 must be calibrated simultaneously. Pump up to a
pressure about 200 mmHg according to the manometer. Calibration is possible in the range
150 to 300 mmHg.

42

Document No. 8001008-6

• Verify that both pressure values in the prompt field match the manometer reading. If not,

adjust by turning the ComWheel. When the values of the pressure bar and the manometer
are equal, press the ComWheel to confirm the calibration. The message ‘Calibrating’ will
appear onto the NIBP digit field. After a few seconds it is followed by ‘Calibrated’, which
means that the calibration has succeeded, and the new calibration data has been saved
into EEPROM.

• NOTE! When calibrating NIBP, always change the displayed pressure value slightly with the

ComWheel, even in cases where the value would be correct (i.e. change the value for
example one step higher and then back one step lower). “Calibrated” text should appear in
the display. This ensures that the calibration procedure is correctly registered and stored by
the module.

− To set the protection on:

Turn the toggle switch to the right. Select Protection ON and push the ComWheel.
Then turn the toggle switch back to the left.

• Remove the module from the frame and plug it back again. Then perform Calibration check

(see the preceding page) to verify the new calibration.

3.4.3 Temperature calibration

NOTE: For the temperature calibration, separate, accurate test plugs (25 °C and 45 °C) are
needed. A test set of two plugs is available from Datex-Ohmeda, order code 884515.

Calibrate temperature when measured test values deviate more than ±0.1 °C, and always after
STP board replacement.

S/5 Hemodynamic modules

1. Enter ESTPR: STP service menu.

2. Enter Calibrations menu.

3. Press the protect button at the bottom of the module and choose OFF in protect mode.

Release the button.

4. Select Calibrate T1/Calibrate T2.

5. Insert calibration plug (25 °C) into T1/T2 connector.

6. Press the ComWheel.

7. Insert calibration plug (45 °C) into T1/T2 connector.

8. Press the ComWheel.

9. Press in the protect button at the bottom of the module and choose ON in protect mode.

Release the button.

3.4.4 Invasive pressure calibration

Calibrate invasive pressure when the pressure transducer (probe) is replaced with a different type
of transducer, and when STP board is replaced.

1. Enter ESTPR: the STP service menu.

Monitor Setup, Install/Service (password 16-4-34), Service (password 26-23-8),

(
Parameters).

2. Enter Calibrations menu.

3. Connect a pressure transducer with a pressure manometer to the P1/P2 connector. Choose

Calibrate P1 or Calibrate P2. Leave the transducer to room air pressure.

4. Press the ComWheel to start zeroing.

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5. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended

pressure is 200 mmHg.

6. Set the pressure on the display to match the pressure reading on the manometer and press

the ComWheel. A tolerance of ±1 mmHg is allowed.

7. The message ‘Calibrated’ will appear on the display.

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S/5 Hemodynamic modules

4 TROUBLESHOOTING

4.1 Troubleshooting charts

See also the User’s Reference Manual for more troubleshooting procedures.

4.1.1 NIBP

TROUBLE CAUSE TREATMENT

No NIBP value displayed NIBP not selected on screen. Check monitor setup.

NIBP menu fading No M-NE(12)STPR module, module

not properly connected, or NIBP and
NE(12)STPR module connected at
the same time.

Artifacts-message Unsuccessful measurement due to

patient movement or shivering.

Weak pulsation-message Weak or unstable oscillation pulses

due to:

• artifacts (accurate diastolic

pressure difficult to measure)

• marked arrhythmia

• marked drop in diastolic

pressure

• diastolic pressure difficult to

measure

• improper cuff position or

attachment

• too few pulses detected

Plug in the module.

Check patient condition and retry.

Check any leaks and retry.

Use proper size of cuff. Check
attachment.

Call service
Error X-message

• weak or unusual blood

circulation

• may give systolic value

NIBP hardware error.
X = error number.

See the description of the error message
code in 4.1.2, the causes and the
solutions listed in the next chapter.

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TROUBLE CAUSE TREATMENT

Cuff loose-message 1. Hose and/or cuff not connected. 1. Connect the hose and the cuff.

2. Hose and cuff connected.

2.

Reasons:

− cuff loosely wrapped − tighten the cuff

− leakage in cuff or hose − replace cuff/hose

− leakage inside module − check internal tubing and air

chamber, and fix if necessary

− pump does not work − check pump connector; if OK, replace

pump

− no pulses during the last three

− check cuff positioning

measurements

Air leakage-message 1. Hose or cuff leaking. Reasons: 1. Replace cuff

− cuff damaged − replace cuff

− cuff connector damaged − replace cuff connector (if the fault is

in hose connector,)

− O-ring damaged or missing − replace O-ring

− hose double connector

− replace hose

damaged

Unable to measure Sys­message

2. Hose and cuff OK. Reasons: 2. Connect or replace tube

− leakage inside the module − replace the whole tubing

− tube disconnected or damaged − fix connections

− air chamber leaking −

− tubes or valve(s) damaged − replace tubes/valve(s)

Systolic blood pressure probably
higher than the maximum inflation

Automatic retrial with increased
pressure.

pressure.

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TROUBLE CAUSE TREATMENT

S/5 Hemodynamic modules

Cuff occlusion-message 1. Cuff and/or hose occluded.

Reason:

− cuff tube kinked − straighten tube

− tube inside module kinked − straighten tube

− occlusion inside/outside

module

2. Cuff, hose, and tubes OK.
Reason:

− fault in pressure transducer − replace the NIBP board

− fault in A/D converter − replace the NIBP board

− faulty calibration − check calibration

− missing voltages − recalibrate

Calibration switch on ­message

EEPROM protection switch at the
bottom of the module is turned to
right.

Calibration not protected ­message.

Calibration protection is set to
OFF.

1.

− remove occlusion

2.

Enables setting the protection OFF in the
Calibration menu. Turn switch to left if you
are not going to calibrate.

Set the protection ON in the NIBP
Calibration menu.

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4.1.2 NIBP error code explanation

Code Explanation Treatment

0 RAM failure; memory failure Change NIBP board.

1 ROM checksum error; memory failure Change NIBP board.

2 +15 V failure Check short circuits. Change NIBP

3 -15 V failure Check short circuits. Change NIBP

board.

board.

4 EEPROM protection switch error (only

with S-STD93)

5 Calibration not protected. (only with S-

STD93)

6 ADC error ADC circuit failure. Change NIBP board.

7 Watchdog time too short Change NIBP board.

8 Watchdog time too long Change NIBP board.

9 Watchdog activated Change NIBP board.

10 EEPROM checksum error; memory failure Change NIBP board.

11 Auto zero range exceeded Calibrate NIBP.

12 Communication break; temporal break

down of communication from monitor
detected

13 - -

14 Too early Auto Start (needs 25 seconds

without pressure)

Turn the toggle switch to the left at the
bottom of the module.

Protect calibration by selecting
Protection ON in the NIBP calibration
menu.

Automatic recovery

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4.1.3 ECG

TROUBLE CAUSE TREATMENT

S/5 Hemodynamic modules

HR numerical display
shows ‘---’

Unacceptable ECG waveform Poor electrode or poor electrode

No ECG trace Waveform not selected on screen.

No heart rate available. If no ECG waveform, check LEADS OFF

skin contact.

Poor electrode condition. Electrodes are dried out.

Improper site of electrodes. Check that electrodes are not placed

Improper skin preparation. Remove body hair. Clean attachment

Improper bandwidth filter. Check filter.

message and connect the leads.

If ECG waveform exists, check heart
rate source e.g. in the ECG Setup
menu behind ECG key.

Electrodes from different
manufacturers are used. /Too
much/little gel is used.

over bones, active muscles, or layers
of fat.

site carefully with alcohol.

Press the
make adjustments.

Monitor Setup key and

Module not plugged in correctly. Plug in.

Noise-message High frequency or 50/60 Hz noise. Isolate noise source.

4.1.4 Pulse oximetry (SpO2)

TROUBLE CAUSE TREATMENT

Message ‘NO PROBE’ No probe connected to the

monitor.

Probe faulty. Change the probe.

Message ‘PROBE OFF’ though
probe properly attached to the
patient

Finger probe falls off 1. Probe is slippery. 1. Wipe with 70 % isopropyl alcohol

Unsuitable site. Try another site.

Probe faulty. Try another probe.

Probe connection cable not
connected to probe.

Check probe connections.

Connect the cable to probe.

and allow to dry.

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TROUBLE CAUSE TREATMENT

2. Finger is too thin or thick. 2. Try other fingers, or other probe
types.

Weak signal artifacts Poor perfusion. Try another place.

Movement artifacts.

Shivering.

Message ‘NO PULSE’ Pulse search > 20 sec. and low

or low pulse rate.

SpO

2

Message ‘ARTIFACT’ Pulse modulation exceeds the

Try other fingers.

Try another place or another probe.

present scale.

Message ‘CHECK PROBE’ DC value not in balance. Try another probe.

Message ‘POOR SIGNAL’ Modulation (Red or Ired) < 0.25 % Patient may be cold.

Message ‘FAULTY PROBE’ Probe is faulty. Change the probe.

No SpO

2

No waveform selected on screen. Check selected SpO2 waveforms by

pressing

Monitor Setup key and

selecting Modify waveforms.

Wrong configuration setting. Check the configuration settings from

the ESTPR:STP/Calibrations menu

Monitor Setup - Install/Service -

(
Service - Parameters)

4.1.5 Temperature

TROUBLE CAUSE TREATMENT

Message ‘TEMPERATURE ERROR’ Faulty calibration. Perform calibration. If it does not

help, check that front panel
connector is properly connected to
STP board.

No temperature displayed Wrong type of probe. Use correct probe.

Temperature out of measurable

The range is between 10 and 45 °C.

range.

Temperature calibration not
protected.

Set the protection ON in the Service
Menu.

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S/5 Hemodynamic modules

4.1.6 Invasive blood pressure

TROUBLE CAUSE TREATMENT

Abnormally low pressure Transducer wrongly positioned. Check mid-heart level and reposition

transducer.

No pressure Defective transducer. Check transducer.

No pressure module plugged in. Check the module.

No waveform selected on screen. Check selected pressure waveforms

by pressing Monitor Setup key and
selecting modify waveforms.

Check that pressure transducer is
open to patient.

Wrong configuration setting Check the configuration setting from

the ESTP:STP/Calibrations menu

Monitor Setup - Install/Service -

(
Service - Parameters)

Not zeroed -message Measurement on, channel not

zeroed.

Zeroing failed -message Unsuccessful zeroing of P1 /P2

(number field).

Calibration failed -message Unsuccessful calibrating of

P1/P2 (number field), possibly
due to pulsating waveform

Out of range < 40 mmHg Measurement pressure is beyond

measurement range.

Out of range > 320 mmHg Measurement pressure is beyond

measurement range.

Zero the channel.

Possibly due to pulsating pressure
waveform. Open the transducer to air
and zero the channel.

Offset is > 150 mmHg. Open the
transducer to air and zero the
channel.

Defective transducer. Replace it and
zero the channel.

Turn the transducer to
sphygmomanometer and try again
(zeroing takes place first).

Gain is beyond the limits (± 20 % of
the default gain). Replace the
transducer.

Check transducer level. Zero the
channel.

Check transducer level. Zero the
channel. The patient may also have
high pressure.

Zero adj. > 100 mmHg Offset when zeroing is > 100

mmHg (but < 150 mmHg) from
the absolute zero of the module
(with default gain).

Check transducer. The waveform may
hit the top and the numeric display
not shown.

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TROUBLE CAUSE TREATMENT

Out of range Measured pressure is beyond the

internal measurement range of
the module.

The waveform hits the top and the
numeric display not shown. Check
transducer and its level. Zero the
channel.

4.1.7 Impedance respiration

TROUBLE CAUSE TREATMENT

No resp trace Waveform not selected on the

screen

Module not plugged in correctly Plug in

Unacceptable resp waveform Poor electrode or poor electrode

skin contact

Poor electrode condition Electrodes are dried out.

Improper site of electrodes Check that electrodes are not placed

Press the Monitor Setup key and
make adjustments

Electrodes from different
manufacturers are used. Too
much/little gel is used.

over bones, active muscles, or layers
of fat.

Improper skin preparation Remove body hair. Clean

attachment site carefully with
alcohol.

Message: ‘SMALL RESP CURVE’ Respiration signal is very small With 3-lead cable in ESTPR/NESTPR

try another lead connection I, II, III or
try 5-lead cable.

Message: ‘APNEA ALARM’, and
respiration waveform normal

Respiration source is CO

2

Check respiration source and
change it to correct one.

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4.2 Troubleshooting flowcharts

4.2.1 M-NE12STPR and M-NESTPR module troubleshooting

Possible faulty

START

module with NIBP

parameter.

S/5 Hemodynamic modules

Insert NXXX module

and turn power on.

Does fault

still appear?

YES

Module ID

on screen?

YES

Error

message on

screen?

YES

See error code explanation
in Service Manual and

fix it.

NO

NO

NO

Remove all

modules from

Monitor Frame.

Fault not in

NXXX module.

NO

Does

another module

work in same

slot?

Key check

in Service Menu

OK?

YES

YES

NO

Check and

replace

NIBP board.

Check keyboard

connector. If OK,

change front panel.

Replace

NXXX module.

NO

OK?

Check and

replace

NIBP board.

NO

OK?

Do

they work?

NO

Check tubes and

connectors. Find leak and

fix it.

Figure 15 M-NE12STPR and M-NESTPR module troubleshooting flowchart

Pump check

in Service Menu

OK?

YES

Leak test

in Service Menu

OK?

NO

NO

YES

Check pump

connector. If OK,

change pump.

NESTPR_module_troubles_flowch.vsd

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4.2.2 M-ESTPR, M-ESTR, and M-ETPR module troubleshooting

Possibly fault in module with

ESTPR parameters.

Check module configuration in
Serv ice menu (ESTPR/STP/ Cal ibration s)

Is it

correct?

YES
Remove all
modul es from

the frame

Insert ESTPR module
and t urn power on

Does faul t

still appear?

YES

Enter the

Service menu

STP
module ID
on screen?

YES

NO

NO

NO

Select the correct
configuration

Fault not in
ESTPR module

NO

Does

another

mod ule wo rk

in same

slot?

YES

Remove

ECG board

Replace

STP board

NO

STP
module ID
on screen?

YES

ECG
module ID
on screen?

YES
Check front panel
key functions in
Service menu

Do

they wo rk?

NO

Check front p anel unit,
ECG board, and STP board
to find culprit. Replace if
necessary.

Figure 16 M-ESTPR Module Troubleshooting Flowchart

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NO

YES

Has ECG

measurement

failed?

YES

Replace
ECG board

NO

board failed?

Has STP

YES

Replace
STP board

NO

Replace
ECG board

Has invBP

measurement

failed?

YES

Replace
STP board

NO

Has Temp

measurement

failed?

YES

Replace
STP bo ard

NO

measurement

Has SpO

failed?

YES

Replace
STP board

NESTPR_MESTPR_module_trou

bles_flowch.vsd

2

5 SERVICE MENU

NOTE: The Service Menu pictures are for reference only. Details on the menu page can vary
depending on the software version.

S/5 Hemodynamic modules

1. Press the Monitor Setup key.

2. Select Install/Service (password 16-4-34).

3. Select Service (password 26-23-8).

4. Select Parameters - NIBP.

NOTE: Parameter values in Service Data fields are for reference only on this chapter.

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5.1 NIBP service menu

Service Data

Pressure shows measured pressure multiplied by 10.
Zero shows pressure at auto zeroing multiplied by 10 and changes between +20 and -20 mmHg.
Absolute pressure is the sum of Pressure and Zero.

Protect handle indicates hardware protection for EEPROM memory. It should be ON all the time in

normal operation. If it is OFF data can not be read from or written to EEPROM, only the calibration
protection can be set or reset by software. It can be turned to OFF by turning the toggle switch to the
right at the bottom of the module, which also enables Protection ON/OFF menu selection in the
calibration menu.

Calibr. prot. shows software calibration protection and it should be OFF to enable calibration.

+15 V power indicates the condition of the supply voltage +15 Vdirty for the pump and valves. It

exists (ON) or not (OFF) depending on service menu function. The supply voltage can be turned on
by selecting the previous Menu and then the desired menu again.

AD0 to AD7 show the values of each eight channels of A/D converter.

Timeouts is a cumulative number that indicates how many times the module has not responded to

the monitor’s inquiry. Bad checksums is a cumulative number that indicates how many times
communication from the module to monitor broke down.
Bad c-s by mod is a cumulative number that indicates how many communication errors the
module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The nonzero
values do not indicate a failure, but the continuous counting (more than 5 per second) indicates
either serial communication failure, or module not in place. Also other modules can cause
communication errors that cause these numbers rise.

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RAM indicates the state of the RAM memory.
ROM indicates whether the checksum in the EPROM is in accordance with the one the software has

calculated.

EEPROM indicates if the values stored in the permanent memory are valid.
The state is either OK, Fail or ? (module not in place or a communication error).

5.1.1 NIBP demo menu

S/5 Hemodynamic modules

A service menu for demonstrating the oscillometric method of NIBP measurement. The menu
shows the realtime pressure signals that are measured from the NIBP cuff. The measurement result
is shown in the adjoining digit field.

Wave Recording Wave Recording is for selecting the recording option. If ON is selected, the pressure signals are

recorded in realtime onto the M-REC paper.

Remove menu Remove menu widens the displayed waveform area.

Previous Menu The menu can be closed by selecting the Previous Menu or just by pressing the ComWheel if the

Remove menu was selected.

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5.1.2 NIBP calibration menu

Active Leak Test Wrap an adult cuff around a pipe and connect the cuff to the module. Select the active leak test

(ON). The module automatically pumps a pressure of 260 mmHg into the cuff. Wait for several
seconds until the pressure stabilizes. Then check that the pressure reading does not drop more
than 6 mmHg per minute. If it does, leaking point(s) should be detected and fixed. Cancel the test
by selecting Active leak test OFF.

Calibration Check

After the calibration check is selected (ON), manually pump pressure into the module and make
sure that the same pressure values are shown both on the display and on manometer. Pressure of
both pressure channels B1 and B2 are shown. Note that if the display shows +2 mmHg at zero
pressure and if you pumped +200 mmHg into the module, the display should show +202 mmHg.

Protection Software calibration protection (ON/OFF). Select OFF when calibrating. Protection can be set to ON

or OFF only when the toggle switch at the bottom of the module is set to the right.

Calibration Calibration selection is available only when protection is OFF.

NIBP calibration can be performed in the NIBP Service menu as follows:

NOTE: Both channels B1 and B2 must be calibrated simultaneously.

1. If Protection is ON change it to OFF by first turning the toggle switch to the right at the

bottom of the module, which enables the Protection selection. Then turn the toggle switch
to the left to enable Calibration.

NOTE : Do not disconnect the module from the frame when turning the switch. The module must be
in the frame during the whole procedure.

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NOTE: When the switch is at the right, the NIBP field shows an error message ‘Calibration switch
on!’.

NOTE: When calibration is enabled, a message ‘Calibration not protected’ appears.

2. For proper zeroing to take place, remove the hose from the front panel connector. Select

Calibration and push the ComWheel. Messages ‘Zeroing’ and ‘Zeroed’ will appear in the
NIBP message field. After this a pressure bar will appear beside the menu.

3. Connect an external mercury manometer with pump to module through the both tubes of the

hose. Pump up to about 200 mmHg pressure (range of 150 to 300 mmHg allowed) according
to the manometer. Verify that both pressure values in the prompt field match the manometer
reading. If not, adjust by turning the ComWheel.

4. When the values are equal, push the ComWheel to confirm the calibration. First the message

‘Calibrating’ will appear in the digit fields for NIBP followed after a few seconds ‘Calibrated’,
which means that the calibration data has now been saved.
NOTE! When calibrating NIBP, always change the displayed pressure value slightly with the
ComWheel, even in cases where the value would be correct (i.e. change the value for example
one step higher and then back one step lower). “Calibrated” text should appear in the display.
This ensures that the calibration procedure is correctly registered and stored by the module.

5. Use the bottom switch to enable Protection setting and set it ON, and finally disable

Protection setting.

5.1.3 NIBP safety valve menu

S/5 Hemodynamic modules

Start Test Start test is for starting and Stop test is for stopping the Safety Valve test.

Safety Valve Data

See NIBP Service menu in chapter 5.1 for information on general items Pressure, Zero, Protect
handle, Calibr. prot., +15 V power, AD0 to AD7 as well as Timeouts etc.

Max. press and 2 s after stop show the measured values at Safety Valve test.

Safety Valve Test Adult/Infant

Wrap an adult cuff around a pipe and connect the cuff to the module. Highlight Start test and give
the ComWheel a push. The test ends automatically or when Stop test (appears in place of Start

test) is pushed.

Max. press indicates the pressure at which the safety valve opens and is normally 310 ±15 mmHg

for adult and 150 mmHg ±15 mmHg for infant. 2 s after stop indicates the pressure at 2 seconds
after the pump has stopped and is normally > 280 mmHg for adult and > 120 mmHg for infant. If
the value is less, check leakage by the active leak test.

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5.1.4 NIBP pulse valve menu

Start Test Start test is for starting and Stop test is for stopping the test.

Set Valve Set Valve lets you adjust the opening of the pulse valve.

Pulse Valve Data

See NIBP Service menu in chapter 5.1 for information on general items Pressure, Zero, Protect
handle, Calibr. prot., +15 V power, AD0 to AD7 as well as Timeouts etc.

Pulse Valve Checking

Wrap an adult cuff around a pipe and connect the cuff to the module. Select the Start test and
push the ComWheel. The pressure rises beyond 240 mmHg and stops. The pulse valve opens. The
module counts the time it takes for the pressure to go down from 240 mmHg to 50 mmHg and
displays it on the screen. The test can be manually stopped by selecting Stop test.

The valve can be adjusted between 0 and 255 (0 for fully closed and 255 for fully open). First
select Set Valve and push the ComWheel. See the pulse valve value and adjust it by turning the
ComWheel. Then push the ComWheel to confirm the value.

The ‘Interval 240 mmHg -> 50 mmHg’ time should be less than 60 seconds when the valve is
‘150’ and less than 10 when fully opened (255). When fully closed (0), the system should be
airtight and the pressure does not drop. Depending on an individual, the pulse valve may remain
closed up to approx. value 100.

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If the measured time deviates much from those above, then the pulse valve or its tubes are faulty.

5.1.5 NIBP buttons/leds menu

S/5 Hemodynamic modules

The selections Auto ON/OFF, Manual ON/OFF, STAT ON/OFF, and Measur. ON/OFF have no
effect on the module.

Buttons/Leds Data

See NIBP Service menu in chapter 5.1 for information on general items Pressure, Zero, Protect
handle, Calibr. prot., +15 V power, AD0 to AD7 as well as Timeouts etc.

Buttons Checking

The front panel keys function is confirmed by pressing the key and observing OFF turns to ON at

Auto On/Off, and Start Cancel.

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5.1.6 NIBP pneumatics menu

Start Pump/Stop Pump

A manual control for the pump. The selection changes to Stop Pump when the pump turns on.

Open Exh1/Close Exh1

A manual control for the exhaust valve 1. The selection changes to Close Exh1 when the valve is
opened.

Open Exh2/Close Exh2

A manual control for the exhaust valve 2. The selection changes to Close Exh2 when the valve is
opened.

Set Valve With Set Valve, the opening of the pulse valve is adjusted between 0 and 255 (0 for fully closed

and 255 for fully open). First push the ComWheel, then turn it to adjust the value on screen and
finally push to set the value.

Reset Clock Reset Clock will zero the time on the display.

Pneumatics Data field

See NIBP service menu in chapter 5.1 for information on general items Pressure, Zero, Protect
handle, Calibr. prot., +15 V power, AD0 to AD7 as well as Timeouts etc.

Pump, Exh1 Valve, and Exh2 Valve show their states.

Pulse Valve shows how much the valve is opened (0 to 255) during Valve Setting.

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Interval 20 mmHg -> 185 mmHg Checking

Select the Start pump at different combinations of the valves open/closed and push the
ComWheel. The module counts the time it takes for the pressure to go up from 20 mmHg to 185
mmHg and displays it. When all the valves are closed, the pump should be able to pump the
pressure in about 1 to 4 seconds into an adult cuff wrapped around a pipe. The pump does not
stop without selecting the Stop Pump by pushing the ComWheel.

Watchdog BEEP

Connect manometer to the front panel and pump pressure into the module. When the AD5 value

changes from negative to positive value (at about 13 mmHg) a beep is heard. This is the watchdog
threshold pressure. Beyond this pressure the watchdog is active and cut pressures at about 2 min.
(adult).

5.1.7 NIBP watchdog menu

S/5 Hemodynamic modules

Test ADULT Test ADULT is to test watchdog timer in adult mode (120 to 140 seconds).

Test INFANT Test INFANT is to test watchdog timer in infant mode (about 60 to 70 seconds).

Stop Test Stop Test is for stopping the test.

Watchdog Data field

See NIBP Service menu in chapter 5.1 for information on general items Pressure, Zero, Protect
handle, Calibr. prot., +15 V power, AD0 to AD7 as well as Timeouts etc.

Watchdog Interval shows the time the +15 Vdirty stays on during the test.

Adult watchdog time testing

Select Test ADULT and push the ComWheel. Watchdog interval starts counting up seconds and
keeps on counting as long as the +15 Vdirty is on. The time should be 120 to 140 seconds.

Infant watchdog time testing

Select Test INFANT and push the ComWheel. Watchdog interval starts counting up seconds and
keeps on counting as long as the +15 Vdirty is on. The time should be 60 to 70 seconds.

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5.2 ECG service menu

Power freq Set power frequency; 50 Hz/60 Hz.

Filter low Set filter low frequency; 0.05 Hz/0.5 Hz.

Filter high Set filter high frequency; 30 Hz (40 Hz if power freq is 60 Hz) /100 Hz or 150 Hz @ NE12STPR.

Service Data field

Power freq, and Cable type show the values chosen or detected, Filter low and high defines the

selected filter (Monitor/Diagnostic/ST).

Quick zero @ NESTPR and ESTPR modules is ON when the signal in any of the three internal
amplifier goes beyond scale, and therefore, a capacitor connected to the related channel
discharges overvoltage. At least one of Quick zero values is OFF when 3-lead cable is used. All
three values are OFF when 5-lead cable is used. Quick zero also takes place when lead is changed
in 3-lead measurement. @ NE12STPR Quick zero is on if any of the ECG amplifiers goes beyond
the scale.

Cable shows ON when an ECG cable is connected.

Electrode shows ON when each of these electrodes are connected.
Pacer count is a running number for pacemaker users.

The front panel ECG key function is confirmed by pressing the key and observing OFF turns to ON at

Button.

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NOTE: M-NE12STPR and M-NESTPR Module does not consist ECG key.

Resp Available indicates that ECG hardware is capable of measuring impedance respiration.

Measurement shows ON when the respiration measurement is on.

Amp zero shows ON when zeroing of the respiration amplifier takes place.

Waveform VALUE will be updated in one second interval.

S/5 Hemodynamic modules

Timeouts is a cumulative number that indicates how many times the module has not responded to
the monitor’s inquiry. Bad checksums is a cumulative number that indicates how many times
communication from the module to monitor broke down.
Bad c-s by mod is a cumulative number that indicates how many communication errors the
module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The nonzero
values do not indicate a failure, but the continuous counting (more than 5 per second) indicates
either serial communication failure, or module not in place. Also other modules can cause
communication errors that cause these numbers rise.

RAM indicates the state of the RAM memory.
ROM indicates whether the checksum at the EPROM is in accordance with the one the software

has calculated.
EEPROM indicates if the values stored in the permanent memory are valid.
The state is either OK, Fail or ? (module not in place or a communication error).

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5.2.1 ECG setup menu

Filter Filters the ECG signal high frequency noise and slow respiratory artefacts.

Monit (monitor) filter is used in routine monitoring. It effectively filters the artefacts caused by the

electrosurgery unit and respiration.

Diagn (diagnostic) filter is used if more accurate information of the waveform is needed (e.g., of P-
wave or AV block). The diagnostic filter is more susceptible to both high frequencies and baseline
wander than monitor filter.

STfilt (ST filter) permits more accurate information of ST segment. It filters the high frequency
artefacts caused by electrosurgery unit but catches the slow changes in ST segment. The ST filter is
more susceptible to baseline wander than the monitor filter.

Pacemaker Selects how to display the pacing pulse of cardiac pacemaker. The selections are Show, Hide, ON

R and Sensit.

Hide, the pacing pulse is filtered away from ECG data.

Show, the pacer pulse is filtered away from ECG data but the pulse is displayed as a constant

height marker.

ON R, pacing pulses are not filtered away from ECG data. This improves ECG monitoring with A-V
pacemaker patients, as QRS complexes are counted even if the pacing pulse hits the QRS
complex. However, during asystole the monitor may count pacing pulses as heart beats.

Sensit selection uses a more sensitive pacemaker detection. Pacemaker spike is displayed on
ECG.

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5.3 STP service menu

Record Data Record Data prints out the shown service data and board information (id, serial number and sw id)

onto the recorder module, M-REC.

Temp Test Temp Test activates the automatic temperature test for the temperature channels T1 and T2. The

result from the test is shown in the service data field.

NOTE: The Temp Test needs to be selected twice before the test starts.

Service Data field

Gain is a coefficient to compensate gain error. Usually the values for P1 and P2 are between

17000 and 25000 and for T1 and T2 between 13000 and 14300. Zero indicates offset
compensation value of each parameter in A/D converter. Typically the values for P1 and P2 are
within ±1000 and for T1 and T2 between -150 and +300. Calibrate if zero and/or gain value is
outside the ranges.

Cable shows ON when a corresponding cable is connected to the front panel and Probe shows ON
when a corresponding probe is connected to the cable.

Under Value the measured numeric values are displayed simultaneously. Pressure values are real
time values and shown in mmHg. Temperature values are shown in degrees Celsius.

The front panel STP keys functions are confirmed by pressing each key and observing OFF turns to
ON at Button.

shows measured beat-to-beat SpO2 value. Modpr is a modulation % that indicates AC/DC

SpO

2

ratio in the measured signal. Hr is a pulse rate calculated from every beat.

Cable and Probe can be either OFF or ON, and these indicate the state PROBE OFF.

Under them there is a message field for SpO

. It can be OK, PULSE SEARCH, NO PROBE, PROBE

2

OFF, NO PULSE, ARTEFACT, POOR SIGNAL, or CHECK PROBE.

Balance between leds is adjusted by changing the intensity of red/infrared. Intensity of infrared
(Ired int.) is in the range of 40 to 255 and red intensity (red int.)is in the range of 40 to 255.

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DC gain shows the gain of DC signal adjusted by the module.

IDC is the value of infrared signal.

RDC is the dc value of red signal.

AC gain is the gain of infrared and red ac signals. AC gain values can be 1 or 0. Value 1 means high

ac gain and 0 means low gain.

Pre gain is a preamplifier gain for infrared and red signals. Pre gain values can be 1 or 0. Value 1
means normal operation. Value 0 means that signal levels are very low and extra gain is taken into
use.

Temp error shows the status of the temperature test. No errors found shows the status (OFF) and
errors found (ON).

Protect key shows normally OFF but turns to ON when the button at the bottom of the module is
pressed.

Protect mode is normally ON. It turns to OFF when Protect is switched to OFF for the temperature
calibration in Calibration Menu.

Configuration shows the chosen module configuration: TP, ST, or STP.

Timeouts is a cumulative number that indicates how many times the module has not responded to

the monitor’s inquiry. Bad checksums is a cumulative number that indicates how many times
communication from the module to monitor broke down.
Bad c-s by mod is a cumulative number that indicates how many communication errors the
module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The nonzero
values do not indicate a failure, but the continuous counting (more than 5 per second) indicates
either serial communication failure, or module not in place. Also other modules can cause
communication errors that cause these numbers rise.

RAM indicates the state of the RAM memory.
ROM indicates whether the checksum at the EPROM is in accordance with the one the software

has calculated.
EEPROM indicates if the values stored in the permanent memory are valid.
The state is either OK, Fail or ? (module not in place or a communication error).

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5.3.1 STP calibration menu

Protection Protection for the configuration and temperature calibrations can be set ON and OFF only when

protect button at the bottom of the module is pressed.

Set Config The module configuration should be set according to the module type. The setting is possible only

when the protection is set OFF. The available selections are TP, ST or STP. The configuration setting
should be checked if the STP board is replaced.

Calibrate T1 / Calibrate T2

The functions are for calibrating the temperature channels T1 and T2. The calibrations are possible
only when the protection is set OFF. The temperature calibration requires accurate test plugs of
value 25 °C and 45 °C.

Calibration:

1. Select Calibrate T1/Calibrate T2

2. Insert the test plug 25 °C into the T1/T2 connector

3. Press the ComWheel

4. Insert the test plug 45 °C into the T1/T2 connector

5. Press the ComWheel

Calibrate P1/Calibrate P2

The functions are for calibrating the invasive blood pressure channels P1 and P2. The calibrations
require a pressure transducer (with an appropriate cable) and a pressure manometer.

1. Connect the pressure transducer with the pressure manometer to the P1/P2 connector.

Select Calibrate P1/Calibrate P2. Leave the transducer to room air pressure.

2. Press the ComWheel to start zeroing.

3. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended

pressure is 200 mmHg.

4. Set the pressure on the display to match the pressure reading on the manometer and press

the ComWheel.

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6 SPARE PARTS

6.1 Spare parts list

6.1.1 M-ESTP rev. 01, M-ETP rev. 00, M-EST rev. 00

Figure 17 Exploded view of M-ESTP Module

Item Description Order No. Replaced by

1 Module box (wide) 886168

2 Latch for module box 879181

3 Spring pin 879182

4 Cross recess screw M3x8 black 616215

5 Front mask unit, M-EST (rev.00) 880946

5 Front mask unit, M-EST (rev.01-02) 882129

5 Front mask unit, M-EST (rev.03-04) 887155

5 Front mask unit, M-ESTP (rev. 01) 880337

5 Front mask unit, M-ESTP (rev.02-03) 882127

5 Front mask unit, M-ESTP (rev.04-05) 887153

5 Front mask unit, M-ESTPR (rev.03-04) 894161

5 Front mask unit, M-ESTR (rev.03-04) 894162

5 Front mask unit, M-ETP (rev.00) 880941

5 Front mask unit, M-ETP (rev.01-02) 882128

5 Front mask unit, M-ETP (rev.03-04) 887154

5 Front mask unit, M-ETPR (rev.03-04) 894163

6 PP board, M-PP, M-ESTPR 891442 8000801

6 STP board, M-ESTPR 8000801 8002575

6 STP board, M-ESTP (rev.01), M-P (rev.00-01) 880339

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Item Description Order No. Replaced by

6 STP board, M-ESTP (rev.03-05), M-P(rev.02) 882627

6 STP board, M-ESTPR 8002575

6 STP board (rev.02) 882130 882627

7 ECG board 884609 888956

7 ECG board, M-ESTP 888957

7 ECG board, M-ESTP (rev.03) 883119 888957

7 ECG board, M-ESTP (rev.04) 886748 888957

7 ECG board, M-ESTP(rev.01) 880338

7 ECG board,M-ESTP (rev.02) 882025 888957

7 ECG/RESP board, M-ESTPR (Rev.02) 888956

8 Membrane keypad 879374

10 Front Panel sticker, DA ; M-ESTPR (rev.01-03) 892207 898504

10 Front Panel sticker, DA ; M-ESTPR (rev.04) ; S/5 898504

10 Front Panel sticker, DA ; M-ESTR (rev.01-03) 892208 898565

10 Front Panel sticker, DA ; M-ESTR (rev.04) ; S/5 898565

10 Front Panel sticker, DA ; M-ETPR (rev.01-03) 892209 898578

10 Front Panel sticker, DA ; M-ETPR (rev.04) ; S/5 898578

10 Front Panel sticker, DE ; M-EST (rev.00) 880453

10 Front Panel sticker, DE ; M-EST (rev.01--) 881961

10 Front Panel sticker, DE ; M-ESTP (rev.01) 880552

10 Front Panel sticker, DE ; M-ESTP (rev.02--) 881955

10 Front Panel sticker, DE ; M-ESTPR (rev.04) ; S/5 898495

10 Front Panel sticker, DE ; M-ESTPR (rev.01-03) 886966 898495

10 Front Panel sticker, DE ; M-ESTR (rev.01-03) 886968 898556

10 Front Panel sticker, DE ; M-ESTR (rev.04) ; S/5 898556

10 Front Panel sticker, DE ; M-ETP (rev.00) 880560

10 Front Panel sticker, DE ; M-ETP (rev.01--) 881958

10 Front Panel sticker, DE ; M-ETPR (rev.01-03) 886967 898569

10 Front Panel sticker, DE ; M-ETPR (rev.04) ; S/5 898569

10 Front Panel sticker, EN ; M-EST (rev.00) 880138

10 Front Panel sticker, EN ; M-EST (rev.01--) 881959

10 Front Panel sticker, EN ; M-ESTP (rev.01) 879481

10 Front Panel sticker, EN ; M-ESTP (rev.02--) 881953

10 Front Panel sticker, EN ; M-ESTPR (rev.01-03) 886603 898494

10 Front Panel sticker, EN ; M-ESTPR (rev.04) ; S/5 898494

10 Front Panel sticker, EN ; M-ESTR (rev.01-03) 886605 898555

10 Front Panel sticker, EN ; M-ESTR (rev.04) ; S/5 898555

10 Front Panel sticker, EN ; M-ETP (rev.00) 880428

10 Front Panel sticker, EN ; M-ETP (rev.01--) 881956

10 Front Panel sticker, EN ; M-ETPR (rev.01-03) 886604 898568

10 Front Panel sticker, EN ; M-ETPR (rev.04) ; S/5 898568

10 Front Panel sticker, ES ; M-EST (rev.01--) 885044

10 Front Panel sticker, ES ; M-ESTP (rev.02--) 884200

10 Front Panel sticker, ES ; M-ESTPR (rev.01-03) 886943 898498

10 Front Panel sticker, ES ; M-ESTPR (rev.04) ; S/5 898498

10 Front Panel sticker, ES ; M-ESTR (rev.01-03) 886945 898559

10 Front Panel sticker, ES ; M-ESTR (rev.04) ; S/5 898559

10 Front Panel sticker, ES ; M-ETP (rev.01--) 885043

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Item Description Order No. Replaced by

10 Front Panel sticker, ES ; M-ETPR (rev.01-03) 886944 898572

10 Front Panel sticker, ES ; M-ETPR (rev.04) ; S/5 898572

10 Front Panel sticker, FI ; M-ESTPR (rev.01-03) 888868 898501

10 Front Panel sticker, FI ; M-ESTPR (rev.04) ; S/5 898501

10 Front Panel sticker, FI ; M-ESTR (rev.01-03) 888870 898562

10 Front Panel sticker, FI ; M-ESTR (rev.04) ; S/5 898562

10 Front Panel sticker, FI ; M-ETPR (rev.01-03) 888869 898575

10 Front Panel sticker, FI ; M-ETPR (rev.04) ; S/5 898575

10 Front Panel sticker, FR ; M-EST (rev.00) 880140

10 Front Panel sticker, FR ; M-EST (rev.01--) 881960

10 Front Panel sticker, FR ; M-ESTP (rev.01) 880158

10 Front Panel sticker, FR : M-ESTP (rev.02--) 881954

10 Front Panel sticker, FR ; M-ESTPR (rev.01-03) 886963 898496

10 Front Panel sticker, FR ; M-ESTPR (rev.04) ; S/5 898496

10 Front Panel sticker, FR ; M-ESTR (rev.01-03) 886964 898557

10 Front Panel sticker, FR ; M-ESTR (rev.04) ; S/5 898557

10 Front Panel sticker, FR ; M-ETP (rev.00) 880429

10 Front Panel sticker, FR ; M-ETP (rev.01--) 881957

10 Front Panel sticker, FR ; M-ETPR (rev.01-03) 886965 898570

10 Front Panel sticker, FR ; M-ETPR (rev.04) ; S/5 898570

10 Front Panel sticker, IT ; M-EST (rev.01--) 886755

10 Front Panel sticker, IT ; M-ESTP (rev.02--) 886753

10 Front Panel sticker, IT ; M-ESTPR (rev.01-03) 886925 898499

10 Front Panel sticker, IT ; M-ESTPR (rev.04) ; S/5 898499

10 Front Panel sticker, IT ; M-ESTR (rev.01-03) 886927 898560

10 Front Panel sticker, IT ; M-ESTR (rev.04) ; S/5 898560

10 Front Panel sticker, IT ; M-ETP (rev.01--) 886754

10 Front Panel sticker, IT ; M-ETPR (rev.01-03) 886926 898573

10 Front Panel sticker, IT ; M-ETPR (rev.04) ; S/5 898573

10 Front Panel sticker, JA ; M-ESTPR (rev.01-03) 888303 898505

10 Front Panel sticker, JA ; M-ESTPR (rev.04) ; S/5 898505

10 Front Panel sticker, JA ; M-ESTR (rev.01-03) 888304 898566

10 Front Panel sticker, JA ; M-ESTR (rev.04) ; S/5 898566

10 Front Panel sticker, JA ; M-ETPR (rev.01-03) 888305 898579

10 Front Panel sticker, JA ; M-ETPR (rev.04) ; S/5 898579

10 Front Panel sticker, NL ; M-EST (rev.01--) 886045

10 Front Panel sticker, NL ; M-ESTP (rev.02--) 886044

10 Front Panel sticker, NL ; M-ESTPR (rev.01-03) 886937 898497

10 Front Panel sticker, NL ; M-ESTPR (rev.04) ; S/5 898497

10 Front Panel sticker, NL ; M-ESTR (rev.01-03) 886939 898558

10 Front Panel sticker, NL ; M-ESTR (rev.04) ; S/5 898558

10 Front Panel sticker, NL ; M-ETP (rev.01--) 886046

10 Front Panel sticker, NL ; M-ETPR (rev.01-03) 886938 898571

10 Front Panel sticker, NL ; M-ETPR (rev.04) ; S/5 898571

10 Front Panel sticker, NO ; M-ESTPR (rev.01-03) 893554 898503

10 Front Panel sticker, NO ; M-ESTPR (rev.04) ; S/5 898503

10 Front Panel sticker, NO ; M-ESTR (rev.01-03) 893556 898564

10 Front Panel sticker, NO ; M-ESTR (rev.04) ; S/5 898564

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Item Description Order No. Replaced by

10 Front Panel sticker, NO ; M-ETPR (rev.01-03) 893555 898577

10 Front Panel sticker, NO ; M-ETPR (rev.04) ; S/5 898577

10 Front Panel sticker, PT ; M-ESTPR (rev.01-03) 895249 898500

10 Front Panel sticker, PT ; M-ESTPR (rev.04) ; S/5 898500

10 Front Panel sticker, PT ; M-ESTR (rev.01-03) 895250 898561

10 Front Panel sticker, PT ; M-ESTR (rev.04) ; S/5 898561

10 Front Panel sticker, PT ; M-ETPR (rev.01-03) 895251 898574

10 Front Panel sticker, PT ; M-ETPR (rev.04) ; S/5 898574

10 Front Panel sticker, SV ; M-EST (rev.01--) 885859

10 Front Panel sticker, SV ; M-ESTP (rev.02--) 885857

10 Front Panel sticker, SV ; M-ESTPR (rev.01-03) 886928 898502

10 Front Panel sticker, SV ; M-ESTPR (rev.04) ; S/5 898502

10 Front Panel sticker, SV ; M-ESTR (rev.01-03) 886930 898563

10 Front Panel sticker, SV ; M-ESTR (rev.04) ; S/5 898563

10 Front Panel sticker, SV ; M-ETP (rev.01--) 885856

10 Front Panel sticker, SV ; M-ETPR (rev.01-03) 886929 898576

10 Front Panel sticker, SV ; M-ETPR (rev.04) ; S/5 898576

11 Metal frame 879183

11 Metal frame 879184

13 Cross cylinder-head screw M3x6 61721

14 Cross cylinder-head scerw M3x12 628700

15 T-Input Board, M-ESTP (rev.02-03) 882090

15 T-Input connectors 887152

16 EMC cover 884099

17 EMC cover 886818

A front panel unit includes all the connectors and input boards.

NOTE: The STP board 882627 can be used as a replacement only with STP software 884342.

NOTE: The ECG board 888957 can be used as a replacement only with ECG software 883806.

NOTE: The STP board 891442 can be used as a replacement only with STP software 891401.

NOTE: The STP board 8000801 includes the STP software 8000717.

NOTE: The STP board 8002575 includes the STP software 8002573.

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6.1.2 M-NESTPR rev. 00, M-NETPR rev. 00, M-NESTR rev. 00

Figure 18 Exploded view of M-NESTPR Module

Item Description Order No. Replaced by

1 Module box (wide) 886168

2 Spring pin 879182

3 Latch for module box 879181

4 ECG/RESP board, M-NESTPR (rev.00) 889988

5 STP board M-NESTPR (rev.00) 890007 8000800

5 STP board M-NESTPR (rev.00) 890007 8002574

5 STP-board 8000800 8002574

5 STP-board, M-NE12STPR 8002574

6 EMC cover 884099

7 NIPB board, M-NESTPR (rev.00) 887520

NIBP board software 888237

8 EMC cover 892305

9 NIPB pump, M-NESTPR, M-NIBP (rev.04) 889993

10 EMC cover 892307

11 Air filter (NIBP) 57142

12 Check valve 58542

13 Damping chamber, M-NESTPR, M-NIBP (rev.04) 888240

14 Bleed valve, M-NESTPR, M-NIBP (rev.04) 58566

15 Magnetic valve 58562

16 NIBP Cuff connector 64654

17 T-Input connectors 887152

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Item Description Order No. Replaced by

18 ECG Input Board, M-NESTPR (rev.00) 889985

19 P Input Board, M-NESTPR (rev.00) 890834

19 SP Input Board, M-NESTPR (rev.00) 890006

19 SPO2 Input Board, M-NESTR (rev.00), M-MRIP (rev.00) 890833

20 Fitting plate 879510

23 Membrane keypad 888242

24 Front panel unit, M-NESTPR 888273

24 Front panel unit, M-NESTR 891748

24 Front panel unit, M-NETPR 891772

25 Metal frame 888230

26 Cross recess screw M3x8 black 616215

27 Cross cylinder-head screw M3x6 61721

27 Cross cylinder-head screw M3x6 61721

28 Cross cylinder-head scerw M3x12 628700

28 Cross cylinder-head scerw M3x12 628700

29 Front Panel sticker, DA ; M-NESTPR (rev.00) 892204 898429

29 Front Panel sticker, DA ; M-NESTPR (rev.01) ; S/5 898429

29 Front Panel sticker, DA ; M-NESTR (rev.00) 892205 898458

29 Front Panel sticker, DA ; M-NESTR (rev.01) ; S/5 898458

29 Front Panel sticker, DA ; M-NETPR (rev.00) 892206 898492

29 Front Panel sticker, DA ; M-NETPR (rev.01) ; S/5 898492

29 Front Panel sticker, DE ; M-NESTPR (rev.00) 891166 898420

29 Front Panel sticker, DE ; M-NESTPR (rev.01) ; S/5 898420

29 Front Panel sticker, DE ; M-NESTR (rev.00) 891671 898449

29 Front Panel sticker, DE ; M-NESTR (rev.01) ; S/5 898449

29 Front Panel sticker, DE ; M-NETPR (rev.00) 891678 898483

29 Front Panel sticker, DE ; M-NETPR (rev.01) ; S/5 898483

29 Front Panel sticker, EN ; M-NESTPR (rev.00) 889264 898419

29 Front Panel sticker, EN ; M-NESTPR (rev.01) ; S/5 898419

29 Front Panel sticker, EN ; M-NESTR (rev.00) 891456 898448

29 Front Panel sticker, EN ; M-NESTR (rev.01) ; S/5 898448

29 Front Panel sticker, EN ; M-NETPR (rev.00) 891457 898482

29 Front Panel sticker, EN ; M-NETPR (rev.01) ; S/5 898482

29 Front Panel sticker, ES ; M-NESTPR (rev.00) 891171 898423

29 Front Panel sticker, ES ; M-NESTPR (rev.01) ; S/5 898423

29 Front Panel sticker, ES ; M-NESTR (rev.00) 891674 898452

29 Front Panel sticker, ES ; M-NESTR (rev.01) ; S/5 898452

29 Front Panel sticker, ES ; M-NETPR (rev.00) 891681 898486

29 Front Panel sticker, ES ; M-NETPR (rev.01) ; S/5 898486

29 Front Panel sticker, FI ; M-NESTPR (rev.00) 891170 898426

29 Front Panel sticker, FI ; M-NESTPR (rev.01) ; S/5 898426

29 Front Panel sticker, FI ; M-NESTR (rev.00) 891676 898455

29 Front Panel sticker, FI ; M-NESTR (rev.01) ; S/5 898455

29 Front Panel sticker, FI ; M-NETPR (rev.00) 891683 898489

29 Front Panel sticker, FI ; M-NETPR (rev.01) ; S/5 898489

29 Front Panel sticker, FR ; M-NESTPR (rev.00) 891167 898421

29 Front Panel sticker, FR ; M-NESTPR (rev.01) ; S/5 898421

29 Front Panel sticker, FR ; M-NESTR (rev.00) 891672 898450

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Item Description Order No. Replaced by

29 Front Panel sticker, FR ; M-NESTR (rev.01) ; S/5 898450

29 Front Panel sticker, FR ; M-NETPR (rev.00) 891679 898484

29 Front Panel sticker, FR ; M-NETPR (rev.01) ; S/5 898484

29 Front Panel sticker, IT ; M-NESTPR (rev.00) 891172 898424

29 Front Panel sticker, IT ; M-NESTPR (rev.01) ; S/5 898424

29 Front Panel sticker, IT ; M-NESTR (rev.00) 891675 898453

29 Front Panel sticker, IT ; M-NESTR (rev.01) ; S/5 898453

29 Front Panel sticker, IT ; M-NETPR (rev.00) 891682 898487

29 Front Panel sticker, IT ; M-NETPR (rev.01) ; S/5 898487

29 Front Panel sticker, JA ; M-NESTPR (rev.00) 894963 898430

29 Front Panel sticker, JA ; M-NESTPR (rev.01) ; S/5 898430

29 Front Panel sticker, JA ; M-NESTR (rev.00) 894964 898459

29 Front Panel sticker, JA ; M-NESTR (rev.01) ; S/5 898459

29 Front Panel sticker, JA ; M-NETPR (rev.00) 894965 8000380

29 Front Panel Sticker, JA ; M-NETPR (rev.01) ; S/5 8000380

29 Front Panel sticker, NL ; M-NESTPR (rev.00) 891168 898422

29 Front Panel sticker, NL ; M-NESTPR (rev.01) ; S/5 898422

29 Front Panel sticker, NL ; M-NESTR (rev.00) 891673 898451

29 Front Panel sticker, NL ; M-NESTR (rev.01) ; S/5 898451

29 Front Panel sticker, NL ; M-NETPR (rev.00) 891680 898485

29 Front Panel sticker, NL ; M-NETPR (rev.01) ; S/5 898485

29 Front Panel sticker, NO ; M-NESTPR (rev.00) 893566 898428

29 Front Panel sticker, NO ; M-NESTPR (rev.01) ; S/5 898428

29 Front Panel sticker, NO ; M-NESTR (rev.00) 893568 898457

29 Front Panel sticker, NO ; M-NESTR (rev.01) ; S/5 898457

29 Front Panel sticker, NO ; M-NETPR (rev.00) 893567 898491

29 Front Panel sticker, NO ; M-NETPR (rev.01) ; S/5 898491

29 Front Panel sticker, PT ; M-NESTPR (rev.00) 895234 898425

29 Front Panel sticker, PT ; M-NESTPR (rev.01) ; S/5 898425

29 Front Panel sticker, PT ; M-NESTR (rev.00) 895235 898454

29 Front Panel sticker, PT ; M-NESTR (rev.01) ; S/5 898454

29 Front Panel sticker, PT ; M-NETPR (rev.00) 895236 898488

29 Front Panel sticker, PT ; M-NETPR (rev.01) ; S/5 898488

29 Front Panel sticker, SV ; M-NESTPR (rev.00) 891169 898427

29 Front Panel sticker, SV ; M-NESTPR (rev.01) ; S/5 898427

29 Front Panel sticker, SV ; M-NESTR (rev.00) 891677 898456

29 Front Panel sticker, SV ; M-NESTR (rev.01) ; S/5 898456

29 Front Panel sticker, SV ; M-NETPR (rev.00) 891684 898427

29 Front Panel sticker, SV ; M-NETPR (rev.01) ; S/5 898490

30 Flat cable, STP 890874

30 Flat cable, STP 890874

31 Flat cable, ECG 890876

32 Flat cable, M-PP 891573

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NOTE: The STP board 890007 can be used as a replacement only with STP software 891401.

NOTE: The STP board 8000800 includes the STP software 8000717.

NOTE: The STP board 8002574 includes the STP software 8002573.

S/5 Hemodynamic modules

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Datex-Ohmeda S/5 monitors

6.1.3 M-NE12STPR rev. 00, M-NE12STR rev. 00, M-NE12TPR rev. 00

Figure 19 Exploded view of M-NE12STPR Module

Item Description Order No. Replaced by

1 Module box (wide) 886168

2 Spring pin 879182

3 Latch for module box 879181

4 12-LEAD ECG Board, M-NE12STPR 894284 8000995

4 12-LEAD ECG BOARD II, N-NE12STPR 8000995

5 STP board M-NESTPR (rev.00) 890007 8000800

5 STP board M-NESTPR (rev.00) 890007 8002574

5 STP-board 8000800 8002574

5 STP-board, M-NE12STPR 8002574

6 EMC cover 884099

7 NIPB board, M-NESTPR (rev.00) 887520

NIBP board software 888237

8 EMC cover 892305

9 NIPB pump, M-NESTPR, M-NIBP (rev.04) 889993

10 EMC cover 892307

11 Air filter (NIBP) 57142

13 Damping chamber, M-NESTPR, M-NIBP (rev.04) 888240

14 Bleed valve, M-NESTPR, M-NIBP (rev.04) 58566

15 Magnetic valve 58562

16 NIBP Cuff connector 64654

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Item Description Order No. Replaced by

17 T-Input connectors 887152

18 12-lead ECG Input Unit 896913

19 P Input Board, M-NESTPR (rev.00) 890834

19 SP Input Board, M-NESTPR (rev.00) 890006

19 SPO2 Input Board, M-NESTR (rev.00), M-MRIP (rev.00) 890833

20 Fitting plate 879510

23 Membrane keypad 888242

24 Front Mask Unit, M-NE12STPR 896910

24 Front Mask Unit, M-NE12STR 896911

24 Front Mask Unit, M-NE12TPR 896912

25 Metal frame 888230

26 Cross recess screw M3x8 black 616215

27 Cross cylinder-head screw M3x6 61721

27 Cross cylinder-head screw M3x6 61721

28 Cross cylinder-head scerw M3x12 628700

28 Cross cylinder-head scerw M3x12 628700

29 Front Panel sticker, DA ; M-NE12STPR (rev.00) 897718 898442

29 Front Panel sticker, DA ; M-NE12STPR (rev.01) ; S/5 898442

29 Front Panel sticker, DA ; M-NE12STR (rev.00) 897622 898470

29 Front Panel sticker, DA ; M-NE12STR (rev.01) ; S/5 898470

29 Front Panel sticker, DA ; M-NE12TPR (rev.00) 897655 898481

29 Front Panel sticker, DA ; M-NE12TPR (rev.01) ; S/5 898481

29 Front Panel sticker, DE ; M-NE12STPR (rev.00) 897709 898433

29 Front Panel sticker, DE ; M-NE12STPR (rev.01) ; S/5 898433

29 Front Panel sticker, DE ; M-NE12STR (rev.00) 897613 898461

29 Front Panel sticker, DE ; M-NE12STR (rev.01) ; S/5 898461

29 Front panel sticker, DE ; M-NE12TPR (rev.00) 897646 898472

29 Front Panel sticker, DE ; M-NE12TPR (rev.01) ; S/5 898472

29 Front Panel sticker, EN ; M-NE12STPR (rev.00) 896985 898432

29 Front Panel sticker, EN ; M-NE12STPR (rev.01) ; S/5 898432

29 Front Panel sticker, EN ; M-NE12STR (rev.00) 896986 898460

29 Front Panel sticker, EN ; M-NE12STR (rev.01) ; S/5 898460

29 Front Panel sticker, EN ; M-NE12TPR (rev.00) 896987 898471

29 Front Panel sticker, EN ; M-NE12TPR (rev.01) ; S/5 898471

29 Front Panel sticker, ES ; M-NE12STPR (rev.00) 897712 898436

29 Front Panel sticker, ES ; M-NE12STPR (rev.01) ; S/5 898436

29 Front Panel sticker, ES ; M-NE12STR (rev.00) 897616 898464

29 Front Panel sticker, ES ; M-NE12STR (rev.01) ; S/5 898464

29 Front Panel sticker, ES ; M-NE12TPR (rev.00) 897649 898475

29 Front Panel sticker, ES ; M-NE12TPR (rev.01) ; S/5 898475

29 Front Panel sticker, FI ; M-NE12STPR (rev.00) 897715 898439

29 Front Panel sticker, FI ; M-NE12STPR (rev.01) ; S/5 898439

29 Front Panel sticker, FI ; M-NE12STR (rev.00) 897619 898467

29 Front Panel sticker, FI ; M-NE12STR (rev.01) ; S/5 898467

29 Front Panel sticker, FI ; M-NE12TPR (rev.00) 897652 898478

29 Front Panel sticker, FI ; M-NE12TPR (rev.01) ; S/5 898478

29 Front Panel sticker, FR ; M-NE12STPR (rev.00) 897710 898434

29 Front Panel sticker, FR ; M-NE12STPR (rev.01) ; S/5 898434

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Item Description Order No. Replaced by

29 Front Panel sticker, FR ; M-NE12STR (rev.00) 897614 898462

29 Front Panel sticker, FR ; M-NE12STR (rev.01) ; S/5 898462

29 Front Panel sticker, FR ; M-NE12TPR (rev.00) 897647 898473

29 Front Panel sticker, FR ; M-NE12TPR (rev.01) ; S/5 898473

29 Front Panel sticker, IT ; M-NE12STPR (rev.00) 897713 898437

29 Front Panel sticker, IT ; M-NE12STPR (rev.01) ; S/5 898437

29 Front Panel sticker, IT ; M-NE12STR (rev.00) 897617 898465

29 Front Panel sticker, IT ; M-NE12STR (rev.01) ; S/5 898465

29 Front Panel sticker, IT ; M-NE12TPR (rev.00) 897650 898476

29 Front Panel sticker, IT ; M-NE12TPR (rev.01) ; S/5 898476

29 Front Panel sticker, JA ; M-NE12STPR (rev.00) 897719 8000377

29 Front Panel sticker, JA ; M-NE12STPR (rev.01) ; S/5 8000377

29 Front Panel sticker, JA ; M-NE12STR (rev.00) 897623 8000378

29 Front Panel sticker, JA ; M-NE12STR (rev.01) ; S/5 8000378

29 Front Panel sticker, JA ; M-NE12TPR (rev.00) 897656 8000379

29 Front Panel sticker, JA ; M-NE12TPR (rev.01) ; S/5 8000379

29 Front Panel sticker, NL ; M-NE12STPR (rev.00) 897711 898435

29 Front Panel sticker, NL ; M-NE12STPR (rev.01) ; S/5 898435

29 Front Panel sticker, NL ; M-NE12STR (rev.00) 897615 898463

29 Front Panel sticker, NL ; M-NE12STR (rev.01) ; S/5 898463

29 Front Panel sticker, NL ; M-NE12TPR (rev.00) 897648 898474

29 Front Panel sticker, NL ; M-NE12TPR (rev.01) ; S/5 898474

29 Front Panel sticker, NO ; M-NE12STPR (rev.00) 897717 898441

29 Front Panel sticker, NO ; M-NE12STPR (rev.01) ; S/5 898441

29 Front Panel sticker, NO ; M-NE12STR (rev.00) 897621 898469

29 Front Panel sticker, NO ; M-NE12STR (rev.01) ; S/5 898469

29 Front Panel sticker, NO ; M-NE12TPR (rev.00) 897654 898480

29 Front Panel sticker, NO ; M-NE12TPR (rev.01) ; S/5 898480

29 Front Panel sticker, PT ; M-NE12STPR (rev.00) 897714 898438

29 Front Panel sticker, PT ; M-NE12STPR (rev.01) ; S/5 898438

29 Front Panel sticker, PT ; M-NE12STR (rev.00) 897618 898466

29 Front Panel sticker, PT ; M-NE12STR (rev.01) ; S/5 898466

29 Front Panel sticker, PT ; M-NE12TPR (rev.00) 897651 898477

29 Front Panel sticker, PT ; M-NE12TPR (rev.01) ; S/5 898477

29 Front Panel sticker, SV ; M-NE12STPR (rev.00) 897716 898440

29 Front Panel sticker, SV ; M-NE12STPR (rev.01) ; S/5 898440

29 Front Panel sticker, SV ; M-NE12STR (rev.00) 897620 898468

29 Front Panel sticker, SV ; M-NE12STR (rev.01) ; S/5 898468

29 Front Panel sticker, SV ; M-NE12TPR (rev.00) 897653 898479

29 Front Panel sticker, SV ; M-NE12TPR (rev.01) ; S/5 898479

30 Flat cable, STP 890874

30 Flat cable, STP 890874

32 Flat cable, M-PP 891573

33 Cross cylinder head screw M3x4 61719

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S/5 Hemodynamic modules

7 EARLIER REVISIONS

For service information on the earlier revisions, please refer to:

Module revision Manual Note!

ESTP Module revision 01 Service Manual p/n 880850

ETP Module revision 00 Service Manual p/n 880850

ESTP Module revision 02 Service Manual p/n 882580

ETP and EST Modules revision 01 Service Manual p/n 882580

ESTP Module revision 03-04,
and ETP and EST Modules revision 02-03

NE12STPR Module, M-NE12STPR (rev. 00)

NE12STR Module, M-NE12STR (rev. 00)

NE12TPR Module, M-NE12TPR (rev. 00)

NESTPR Module, M-NESTPR (rev. 00)

NESTR Module, M-NESTR (rev. 00)

NETPR Module, M-NETPR (rev. 00)

ESTPR Module, M-ESTPR (rev. 03)

ESTR Module, M-ESTR (rev. 03)

ETPR Module, M-ETPR (rev. 03)

Technical Reference Manual Slot 896620-1. Main manual is 896 624.

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APPENDIX A, Service check form, S/5 NE12STPR, NESTPR, ESTPR modules

Document No. 88001008-6

82

APPENDIX A, Service Check Form, S/5 NE12STPR, NESTPR, ESTPR modules

APPENDIX A

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Document No. 88001008-6

APPENDIX A, Service check form, S/5 NE12STPR, NESTPR, ESTPR modules

SERVICE CHECK FORM

DATEX-OHMEDA HEMODYNAMIC MODULES

Customer

Service

Service engineer Date

OK = Test OK N.A. = Test not applicable Fail = Test Failed

All modules

1. Internal parts 2. External parts

3. NIBP pump filter 4. Installation

5. Recognition

Notes

ECG measurement

OK N.A. Fail OK N.A. Fail

Module type S/N

S/N

6. Module software (serial numbers)

ECG/RESP

STP

NIBP

OK N.A. Fail OK N.A. Fail

7. Communication and

memories

9. Power frequency 10. Cable recognition

11. Lead detection 12. Test with patient

Notes

8. Membrane key

simulator

A-1(4)

Document No. 8001008-6

Datex-Ohmeda S/5 monitors

RESP measurement

OK N.A. Fail OK N.A. Fail

13. RESP measurement

recognition

14. Test with patient

simulator

Notes

TEMP measurement

OK N.A. Fail OK N.A. Fail

15. Communication and

memories

16. Temperature probe

detection

17. Calibration check 18. Temp test -function

19. Configuration

STP/ST/TP

Notes

InvBP measurement

S/N

S/N

S/N

OK N.A. Fail OK N.A. Fail

20. Membrane keys 21. Cable and transducer

detection

22. Calibration 23. Test with patient

simulator

Notes

SpO2 measurement

OK N.A. Fail OK N.A. Fail

24. SpO2 probe detection 25. Test measurement

Notes

S/N

A 2 (4)

Document No. 8001008-6