Philips IntelliVue MP90 Service Manual

IntelliVue MP90

Service Guide

IntelliVue Patient Monitor

MP90

Patient Monitoring

Part Number M8000-9351B

Table of Contents

1 Introduction	13
Who Should Use This Guide	13
How to Use This Guide	13
Abbreviations	13
Responsibility of the Manufacturer	14
Passwords	14
Warnings and Cautions	14
2 Theory of Operation	15
Monitor Theory of Operation	15
System Boundaries	15
Hardware Building Blocks	16
IntelliVue MP90	17
Optional Hardware	18
Compatible Devices	18
Power Supply	19
CPU Boards	19
I/O Boards	20
Data Flow	20
Data Acquisition	20
Data Provider System Service	21
Persistent Data Storage System Service	21
Display and User Interface Service	21
Data Output	21
Monitor Applications	22
Internal LAN (Measurement Server Link)	22
Philips Clinical Network	23
How does the Support Tool Work with the Monitor	23
Monitor Software Block Diagram	24
Block Diagram Legend	26
3 Testing and Maintenance	31
Concepts	31
Test Reporting	31
Recommended Frequency	32
Tests Recommended When Performing...	33
Installation	33
Repair	33
Preventive Maintenance	33

3

Performance Verifications	33
Upgrades	34
Tests	34
Visual Test	34
Power On Test	34
NBP Tests	34
NBP Accuracy Test	35
NBP Leakage Test	36
NBP Linearity Test	36
Valve Test	36
Sidestream CO2 Performance Test	37
Barometric Pressure Check and Calibration	37
Leakage Check	38
Pump Check	39
Flow Rate Check and Calibration	39
Noise Check	39
CO2 Gas Measurement Calibration Check	39
Calibration Verification	40
Reset Time Counters	40
Temperature Accuracy	41
ECG/Resp Performance Test	42
ECG Performance	42
Respiration Performance	42
Invasive Pressure Performance Test	42
SpO2 Performance Test	42
Cardiac Output Performance Test	43
Service Tool Procedure, Version 1	43
Service Tool Procedure, Version 2	43
BIS Performance Test	43
PIC/DSC Test	43
Nurse Call Relay Performance Test	44
Phone Jack Type Connector Test	44
Multi-Port Nurse Call Connector Test	44
ECG Sync Performance Test	45
VueLink Tests using VueLink Test Module	46
Test Procedure	46
Safety Testing	47
Warnings, Cautions, and Safety Precautions	47
Safety Test Procedures	47
Touchscreen Calibration	50
4 Troubleshooting	51
Introduction	51
How To Use This Section	51
Who Should Perform Repairs	51
Replacement Level Supported	51

4

Software Revision Check	52
Obtaining Replacement Parts	52
Troubleshooting Guide	52
Checks for Obvious Problems	52
Checks Before Opening the Instrument	52
Checks with the Instrument switched Off	52
Checks with the Instrument Switched On, AC connected	53
Initial Instrument Boot Phase	53
Troubleshooting Tables	54
How to use the Troubleshooting tables	54
Boot Phase Failures	55
External Display is blank	58
External Touch Display not functioning	58
General Monitor INOP Messages	59
Remote Alarm Device	60
Remote Extension Device	60
Keyboard/Mouse not functioning	61
Network related problems	62
Wireless Network	63
Multi-Measurement Server	64
MSL-related problems	64
Alarm Issues	66
Alarm Lamps	66
Alarm Tones	67
Alarm Behavior	67
Individual Parameter INOPS	67
Flexible Module Server	68
Printer	69
Recorder	70
MIB / RS232	70
Flexible Nurse Call Relay	71
Troubleshooting the ECG OUT	72
Data Flow Marker In and ECG Wave	72
Status Log	73
Troubleshooting with the Support Tool	74
Troubleshooting the Individual Measurements or Applications	75
5 Repair and Disassembly	77
Tools Required	77
MP90 CMU Disassembly	77
Removing I/O Boards	77
Removing the Top Cover	79
Removing the Plastic Feet and/or the Locking Cam	81
Removing the optional Fans (Dual CPU Versions only)*	82
Replacing the Second (Independent) Video Board
(Dual CPU Versions only)	83

5

Removing the Second CPU/Main Board (Dual CPU Versions only)		84
Accessing the Main CPU or Primary Video Board (Dual CPU Versions)		86
Replacing the Primary Video Board		88
Removing the Main Board		90
Removing the Power Supply		93
Removing the Speaker		95
Removing the Power On/Off Switch		95
Flexible Module Server (FMS) Disassembly		97
Removing the Handle and the Measurement Server Mount		97
Plug-in Modules		102
Plug-In Module Disassembly		102
tcpO2/tcpCO2 Calibration Chamber Kit		103
Recorder Module Paper		104
Disassembly Procedures for the Measurement Server Extension		105
Removing the Front Cover		105
Removing the Extension Bottom Cover		106
Removing the CO2 Scrubber		107
Removing the Pump		108
Refit Procedures for the Measurement Server Extension		108
Refitting the CO2 Scrubber		109
Refitting the Pump		109
Refitting the Extension Bottom Cover		109
Refitting the Front Cover		110
General Reassembly/Refitting Comments		110
Following Reassembly		110
6 Parts		111
MP90 Parts		112
Exchange Parts		112
Replacement Parts		113
Flexible Module Server Parts		114
Exchange and Replacement Parts		114
Multi-Measurement Server Parts		115
Measurement Server Extension Parts (M3015A and M3016A)		117
Exchange Parts List		119
Plug-in Modules Part Numbers		119
Part Number Table		119
Exchange Modules, Table 1		120
Exchange Modules, Table 2		120
Plug-In Modules Replaceable Parts		121
Single-Width Plug-In Module		122
Double-Width Plug-In Module		122
Plug-in Module Replaceable Parts		123
Plug-In Module Language Specific Front Housings, Table 1		123
Plug-In Module Language Specific Front Housings, Table 2		123
Plug-In Module Specific Bezels		124

6

BIS Module Replaceable Parts	124
BIS Module Components	125
tcpO2/tcpCO2 Module Accessories	125
External Display Part Numbers	126
Remote Input Devices Part Numbers	127
Remote Alarm Device Part Numbers	128
Remote Extension Device Part Numbers	129
7 Installation Instructions	131
Unpacking the Equipment	131
Initial Inspection	132
Mechanical Inspection	132
Electrical Inspection	132
Claims For Damage and Repackaging	132
Claims for Damage	132
Repackaging for Shipment or Storage	132
Installing the Monitor (M8010A)	132
Mounting Instructions	132
Assembling Mounts	132
Connections	133
Installing Interface Boards	134
Connection of MIB Devices	135
Installing Remote Devices	136
Mounting the Remote Display (M8031A)	136
Connections	136
Mounting the 17” Remote Display (M8033A)	137
Flexible Module Server and/or Multi-Measurement Server	137
Positioning the Measurement Server on a Clamp Mount	137
Mounting the MMS Mount to the FMS (M8048A)	137
Attaching the MMS to a Mount	138
Detaching the Measurement Server from a Mount	138
Mounting the Remote Extension Device to the FMS	139
Mounting the BIS Engine to the FMS	139
Mounting the FMS	140
Connections	141
MSL Cable Termination	141
Remote Alarm Device	143
Mounting	143
Connections	143
Remote Extension Device	144
Mounting	144
Connections	145
Cabling	145
Keyboard/Mouse	146
Philips Clinical Network (wired)	146

7

Philips Clinical Network (wireless)		146
Flexible Nurse Call Relay		146
Connections		146
ECG Out Functionality		147
Connections		147
Configuration Tasks		147
Setting Altitude and Line Frequency		148
Configuring the Equipment Label		148
Configuring the printer		148
Setting the Display Resolution (M8033A only)		148
8 Site Preparation		149
Introduction		149
Site Planning		149
Roles & Responsibilities		149
Site Preparation Responsibilities		149
Procedures for Local Staff		150
Procedures for Philips Personnel		151
Monitor M8010A Site Requirements		151
Space Requirements		151
Environmental Requirements		152
Temperature		152
Humidity		152
Altitude		152
Electrical and Safety Requirements (Customer or Philips)		152
Safety Requirements		152
Electrical Requirements		153
Remote Device Site Requirements		153
Multi-Measurement Server M3001A or Flexible Module Server M8048A		154
Space Requirements Multi-Measurement Server M3001A		154
Space Requirements Flexible Module Server M8048A		154
Environmental Requirements Multi-Measurement Server M3001A		155
Environmental Requirements Flexible Module Server M8048A		155
Cabling Options and Conduit Size Requirements		155
Remote Displays - M8031A		156
Space Requirements		156
Environmental Requirements		156
Electrical and Safety Requirements		157
Remote Displays - M8033A		157
Space Requirements		157
Environmental Requirements		157
Electrical and Safety Requirements		157
Cabling Options and Conduit Size Requirements		158
Remote Alarm Devices		158
Space Requirements		158

8

Cabling Options and Conduit Size Requirements	158
Remote Extension Device	159
Space Requirements	159
Cabling Options and Conduit Size Requirements	159
Input Devices	159
Local Printer	160
Philips Medical LAN	160
MIB Interface	160
Flexible Nurse Call Relay Interface	161
ECG Out Interface	161
9 Anesthetic Gas Module	163
Introduction	163
Description	163
Product Structure	163
Physical Specifications	163
Environmental Specifications	164
Performance Specifications	164
CO2 Measurement	165
AWRR derived from CO2 Waveform	165
N2O Measurement	165
O2 Measurement	165
Anesthetic Agent Measurement	165
Alarm Ranges	166
Alarm Delay	166
Apnea Alarm	166
INOP Alarms	166
General Measurement Principles	167
Theory of Operation	167
Main PC Board	168
Power Supply	169
Pneumatic System	169
Pump	170
Watertrap	170
Sample Flow Through the Pneumatic Path	171
Agent Identification Assembly	171
Measurement Principle	172
O2 Sensor	172
Specifications	172
Measurement Principle	172
Infrared Measurement Assembly	173
Installation and Patient Safety	174
Physical Installation	174
Environment	175
Label Sheet	175
Making Connections to the AGM	175

9

Sample Gas Connections to the Gas Exhaust	176
Returning the Gas Sample	176
Setting Up the Gas Return	177
Removing the Gas Sample	178
Setup and Configuration Procedures	178
Altitude Configuration	178
Connect Sample Input Tubing	178
Preventive Maintenance (PM) Tasks	178
Post-Installation Checks	179
Safety Requirements Compliance and Considerations	179
Explanation of Symbols Used	179
Power Supply Requirements	180
Grounding the System	180
Equipotential Grounding	181
Combining Equipment	181
Checking and Calibrating the Anesthetic Gas Module	181
Access Service Functions of the M1026A Anesthetic Gas Module	181
When and how to check the Philips M1026A Anesthetic Gas Module	183
Equipment required for checking	183
Checks and adjustments	184
Performance Leakage Check	184
Performance Diagnostic Check	185
Performance Flowrate Check	185
Total Flowrate Check and Adjustment in Purge Mode	185
Measurement Path Flowrate Check and Adjustment	186
Total Flowrate Check in Normal Mode	188
Zero Calibration	188
Barometric Pressure Check and Calibration	189
Span Calibration Check	190
Disposal of Empty Calibration Gas Cylinder	192
Maintaining the Anesthetic Gas Module	193
Preventive Maintenance (PM) Tasks	193
Cleaning	194
Replace PM Parts	194
Internal Nafion Tubing with Bacterial Filters and manifold Seals	194
Room-Air Filter	196
Pump Filter	197
Performance Checks	198
Other factors to maximize uptime or reduce cost of ownership:	198
Troubleshooting the Anesthetic Gas Module	198
Compatibility Criteria for the AGM and the IntelliVue Monitors	198
Flow Charts for Communication and Measurement Type Problems	198
Hardware Related Troubleshooting Strategy	203
INOPs	204
Calibration Checks	206
Calibration Checks Troubleshooting Table	207

10

Diagnostic Checks	208
Problem Solving Hierarchy	209
Pneumatic System Diagnostic Checks	210
O2 Assembly Diagnostic Checks	210
Optical Path Disgnostic Checks	213
IR Measurement Assembly Diagnostic Checks	214
Agent ID Assmebly Diagnostic Checks	215
Power Supply Diagnostic Checks	216
Operating Temperature Diagnostic Checks	217
Test Points, Connectors and Jumpers	217
Test Points	217
Connectors	218
Jumpers	218
Repairing the Anesthetic Gas Module	220
Introduction	220
The Top Cover	222
Removal	222
Replacement	222
Lifting the IR Measurement Mounting Bracket	224
Removal	225
Replacement	225
Infrared Measurement Assembly Head	227
Transferring NVRAM Data to a Replacement Head	227
Sample Cell	231
Removal	231
Replacement	231
Solenoid Valve #1	235
Removal	235
Replacement	235
Power Supply Unit	237
Removal	237
Replacement	237
Main PC Board	238
Removal	238
Replacement	239
O2 Sensor	240
Removal	240
Replacement	241
Agent Identification Head	243
Removal	243
Replacement	244
Pump	245
Removal	245
Replacement	245
Fan	246

11

Removal	246
Replacement	246
Solenoid Valve #2	248
Removal	248
Replacement	248
Top Cover PC Board	249
Removal	249
Replacement	249
Watertrap Manifold and Protector	251
Removal	251
Replacement	251
Power Fuses	252
Removal	252
Replacement	252
Test and Inspection Matrix	252
When to Perform Test Blocks	256
Safety Test Appendix	257
Parts List	259
Calibration Equipment	264

12

1

Introduction

This Service Guide contains technical details for the IntelliVue MP90 Patient Monitor, the MultiMeasurement Server (MMS), the Flexible Module Server (FMS) and the Measurement Server Extensions.

This guide provides a technical foundation to support effective troubleshooting and repair. It is not a comprehensive, in-depth explanation of the product architecture or technical implementation. It offers enough information on the functions and operations of the monitoring systems so that engineers who repair them are better able to understand how they work.

It covers the physiological measurements that the products provide, the Measurement Server that acquires those measurements, and the monitoring system that displays them.

Who Should Use This Guide

This guide is for biomedical engineers or technicians responsible for troubleshooting, repairing, and maintaining Philips’ patient monitoring systems.

How to Use This Guide

This guide is divided into eight sections. Navigate through the table of contents at the left of the screen to select the desired topic. Links to other relevant sections are also provided within the individual topics. In addition, scrolling through the topics with the page up and page down keys is also possible.

Abbreviations

Abbreviations used throughout this guide are:
Name	Abbreviation
IntelliVue MP90 Patient Monitor	the monitor
Flexible Module Server	FMS
Multi-Measurement Server	MMS
Measurement Server Link	MSL
Medical Information Bus	MIB
Anesthetic Gas Module	AGM

13

1 Introduction

Responsibility of the Manufacturer

Responsibility of the Manufacturer

Philips only considers itself responsible for any effects on safety, reliability and performance of the equipment if:

•assembly operations, extensions, re-adjustments, modifications or repairs are carried out by persons authorized by Philips, and

•the electrical installation of the relevant room complies with national standards, and

•the instrument is used in accordance with the instructions for use.

To ensure safety, use only those Philips parts and accessories specified for use with the monitor. If nonPhilips parts are used, Philips is not liable for any damage that these parts may cause to the equipment.

This document contains proprietary information which is protected by copyright. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

Philips Medizin Systeme Böblingen GmbH

Hewlett-Packard Str. 2

71034 Böblingen, Germany

The information contained in this document is subject to change without notice.

Philips makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose.

Philips shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Passwords

In order to access different modes within the monitor a password may be required. The passwords are listed below.

Monitoring Mode: No password required

Configuration Mode: 71034

Demo Mode: 14432

Service Mode: 1345

Consult the configuration guide before making any changes to the monitor configuration.

Warnings and Cautions

In this guide:

•A warning alerts you to a potential serious outcome, adverse event or safety hazard. Failure to observe a warning may result in death or serious injury to the user or patient.

•A caution alerts you where special care is necessary for the safe and effective use of the product. Failure to observe a caution may result in minor or moderate personal injury or damage to the product or other property, and possibly in a remote risk of more serious injury.

14

2

Theory of Operation

Monitor Theory of Operation

The IntelliVue Patient Monitor:

•displays real-time data

•controls the attached measurement servers

•alarms in the case of patient or equipment problems

•offers limited data storage and retrieval (trending)

•interfaces to the Philips Clinical Network and other equipment

A monitor with just a single integrated measurement server can be connected to additional building blocks to form a monitoring system with a large number of measurements, additional interface capabilities and multiple slave displays. These elements cooperate as one single integrated real-time measurement system.

System Boundaries

The following diagram discusses specific boundaries within the overall system with respect to their openness and real-time requirements:

15

2 Theory of Operation

Monitor Theory of Operation

Philips Clinical Network

Measurement LAN

combines components of one patient monitor; real time requirements across all interconnected elements

Philips Clinical Network (wired LAN)

connects multiple patient monitors, information centers, application servers; closed system, only Philips qualified products (tested and with regulatory approval) are connected, Philips is responsible for guaranteed real-time functionality and performance

Philips Clinical Network (wireless)

like Philips Clinical Network (wired) LAN, however due to current wireless technologies available it has reduced bandwidth, longer latencies, reduced functionality

Hospital LAN, Internet

Standard Network, not under Philips control, no guaranteed service, no real-time requirements

Hardware Building Blocks

The following hardware building blocks make up the monitoring system:

16

Monitor Theory of Operation

2 Theory of Operation

IntelliVue MP90

The MP90 monitor:

•can be used with the standalone M8031A 15-inch or the M8033A 17-inch color LCD TFT display with touchscreen operation.

•can also be used with other XGA and SXGA standalone off-the-shelf displays which comply with medical standards such as IEC 60601-1 and IEC 60601-1-2.

•has the central processing unit in a separate module

•uses the Philips SpeedPoint as primary input device whereas the Philips Touchscreen and computer devices such as mice, trackball, and keyboard can be added optionally

•supports the Flexible Module Server (FMS)

Building Blocks:

17

2 Theory of Operation

Monitor Theory of Operation

		|| I/F To Local Printer
Power Supply	I/F	Remote Device I/F to
		Alarm Device I/F*
	Boards	Alarm Device and Remote Input
		MIB To AGM
	1st Main Board

	1 Main Board
2nd	I/F
	Boards
Main Board
		FMS CPU
	MSL	FMS M/B
		OR
	I/F

	Video I/F	MMS CPU
	Board
Video I/F		To Ext. Display
Board To Ext. Display

Optional Hardware

The M8031A 15-inch color LCD TFT display or the M8033A 17-inch color LCD TFT display (both with touchscreen operation) can be ordered optionally. Additional input devices such as mice, trackball or keyboard can also be added. If the monitor is ordered with the wireless LAN option an external wireless transmitter is required. For further details regarding the wireless network please refer to the M3185A Philips Clinical Network documentation.

Compatible Devices

Figure 1 M8048A Flexible Module Server (FMS)

18

Monitor Theory of Operation

2 Theory of Operation

Figure 2 M3001A Multi-Measurement Server (MMS)

Power Supply

The AC/DC converter transforms the AC power coming from the power plug into 48 V/120W DC source and isolates the monitoring system from the AC power mains.The 48V is distributed via power bus and supplies power to all the components of the system: The 56 V DC power needed for the FMS, MMS and measurement server extension is created by an isolating DC/DC converter. The CPU is supplied with 3.3 V and 5 V DC power. The transformation is performed in two steps: The first DC/ DC converter is a power regulator which reduces the variations caused by load changes on the 48V power bus. The second DC/DC converter converts the power to the needed voltage. Interface boards require a power of 10V AC.

CPU Boards

The CPU boards have an MPC860 50 MHz processor that provides a number of on-chip, configurable interfaces. An array of 12 fast UARTs with configurable protocol options are implemented in an ASIC (along with other system functions such as independent watchdogs etc.), providing interfacing capabilities to measurement modules and I/O boards. The serial interfaces can easily be electrically isolated. The main board contains additional video hardware.

Flexible Module Server

IntelliVue Patient Monitor

Multi-Measurement Server

CPU

Video

CPU

CPU

Bank of I/Os

Bank of I/Os

Bank of I/Os

Measurement

Modules

Interfaces

Acquisition

The CPUs provide two LAN interfaces to interconnect CPUs (via the Internal LAN) or to connect to the Philips Clinical Network.

The CPU capabilities are identical. Different loading options are coded on serial EEPROMs to support the automatic configuration of the operating system at boot time.

19

2 Theory of Operation

Monitor Theory of Operation

I/O Boards

Interfaces to the monitor are implemented via I/O boards. The location of these boards is restricted by general rules. The I/O slot designations diagram and the I/O matrix which outline the I/O board placement rules can be found in the Installation Instructions section.

The following is a list of Interface (I/O) boards which may be present in your monitor, depending on your purchased configuration:

•MSL

•Video

•Philips Clinical Network (LAN wired or wireless)

•PS/2

•MIB/RS232

•Flexible Nurse Call

•Parallel printer

•Remote devices (Remote Alarm Device, Remote Extension Device)

The specifications for the above listed interfaces can be found in the technical data sheet for the monitor and in the Specifications chapter of the Instructions for Use.

Data Flow

The following diagram shows how data is passed through the monitoring system. The individual stages of data flow are explained below.

Display

and User

Interface

Data		Data		Applications
Acquisition		Provider
		Service

	Persistent	Data
	Data
		Output
	Storage

Data Acquisition

Monitoring data (for example patient measurement data in the form of waves, numerics and alerts) is acquired from a variety of sources:

20

Monitor Theory of Operation

2 Theory of Operation

•Measurement Servers

The Measurement Servers connected to the internal LAN convert patient signals to digital data and apply measurement algorithms to analyze the signals.

•External measurement devices

Data can be also acquired from devices connected to interface boards of the monitor. Software modules dedicated to such specific devices convert the data received from an external device to the format used internally. This applies to parameter modules and the Anesthetic Gas Module.

•Server systems on the Philips Clinical Network

To enable networked applications such as the other bed overview, data can be acquired from server systems attached to the Philips Clinical Network, for example a Philips Information Center.

Data Provider System Service

All data that is acquired from measurement servers or external measurement devices is temporarily stored by a dedicated data provider system service. All monitor applications use this central service to access the data in a consistent and synchronized way rather than talking to the interfaces directly.

This service makes the applications independent of the actual type of data acquisition device.

The amount of data stored in the data provider system service varies for the different data types. for example several seconds of wave forms and the full set of current numerical values are temorarily stored in RAM.

Persistent Data Storage System Service

Some applications require storage of data over longer periods of time. They can use the persistent data storage system service. Dependent on the application requirements, this service can store data either in battery backed-up (buffered) memory or in flash memory. The buffered memory will lose its contents if the monitor is without power (not connected to mains) for an extended period of time. The flash memory does not lose its contents.

The trend application for example stores vital signs data in a combination of flash memory and buffered memory, while the system configuration information (profiles) is kept purely in flash memory.

Display and User Interface Service

Applications can use high level commands to display monitoring data or status and command windows on the LCD panel. These commands are interpreted by the display manager application. This application controls the dedicated video hardware which includes video memory and a special ASIC.

User input is acquired from a variety of input devices, for example the SpeedPoint, the touchscreen or other standard input devices (keyboard, mouse) which may be attached to I/O boards. The system software makes sure that the user input is directed to the application which has the operating focus.

Data Output

The monitoring system is very flexible and customizable regarding its data output devices. Built-in devices (for example LAN, speaker, video) provide the basic output capabilities.

These capabilities can be enhanced by adding additional I/O boards, as required in the specific enduser setup. The additional I/O boards typically provide data to externally attached devices, for example to printers, RS232 based data collection devices, nurse call systems etc.

21

2 Theory of Operation

Monitor Theory of Operation

The monitor can identify I/O boards by means of a serial EEPROM device that stores type and version information. The operating system detects the I/O boards and automatically connects them with the associated (interface driver) application. For some multi-purpose cards it is necessary to configure the card for a particular purpose first (for example the dual MIB/RS232 card can support external touch display, data import, data export).

Monitor Applications

The monitor applications provide additional system functionality over the basic measurement and monitoring capabilities. This includes for example trending, report generating, event storage or derived measurements.

In general, the monitor applications use the data provider system service to access the measurement data. Application interfaces to the other system services allow the application to visualize data, to store data over extended periods of time or to output data to other devices.

Internal LAN (Measurement Server Link)

All components of the monitoring system (including measurement servers and CPUs in the monitor) communicate using an IEEE802.3/ Ethernet LAN in the Measurement Server Link (MSL). This network is used to distribute data between the components, for example:

•Digitized patient signals including wave data, numerical data and status information (typically from the measurement server to a display unit)

•Control data representing user interactions (typically from the display unit to a measurement server)

•Shared data structures, for example representing patient demographical data and global configuration items

The internal LAN allows plug and play configuration of the monitoring system. The system automatically detects plugging or unplugging of measurement servers and configures the system accordingly.

The components on the internal LAN are time-synchronized to keep signal data consistent in the system. Dedicated hardware support for synchronization eliminates any latency of the network driver software.

The integrated LAN provides deterministic bandwidth allocation/reservation mechanisms so that the real-time characteristic of signal data and control data exchange is guaranteed. This applies to the data flow from the measurement server to the monitor (for example measurement signal data) and the data flow from the monitor to a measurement server (for example to feed data to a recorder module).

Integrated communication hubs in the monitor and the FMS allow flexible cabling options (star topology, daisy chaining of servers).

22

Monitor Theory of Operation

2 Theory of Operation

MDSE Internal LAN

MDSE	MDSE
Internal	Internal
LAN	LAN

Philips Clinical Network

The monitoring system may be connected to the Philips Clinical Network, for example to provide central monitoring capabilities or other network services. This connection may be through a normal wired connection or through a wireless connection.

The monitor supports the connection of an external off-the-shelf wireless adapter. This allows a simple field upgrade as well as a technology upgrade in the future. Switching between wired and wireless networks is automatically triggered by the plugging or unplugging of the network cable.

The Philips Clinical Network protocols function very similarly to the protocols used on the internal LAN.

After configuration, the monitoring system sends the digitized patient signals including wave data, numerical data and status information onto the network. Control data representing user interactions can be exchanged between the monitoring system and a central station bi-directionally.

Additional protocols are supported for networked applications, for example for the other bed overview function, which allows viewing of monitoring data from other patients on the network.

For plug and play operation, the monitoring system uses the standard BootP protocol to automatically acquire a network address.

How does the Support Tool Work with the Monitor

The support tool is a Windows application typically installed on the laptop of a customer engineer or a biomedical engineer working in the customer’s own service department.

The purpose of the support tool is to upgrade, configure and diagnose all monitoring components (modules, measurement servers, and monitors) in the system over the network.

23

2 Theory of Operation

Monitor Theory of Operation

The service protocol developed for this purpose uses a raw access to the devices without the need for IP addresses etc. over a standard customer network installation, so that even defective devices can be upgraded as long as the few kBytes of initial boot code are working. The boot code itself can also be upgraded using the same protocol.

The tool allows access to internal service information and to serial numbers. It can be remotecontrolled, for example via a dial-up connection from a response center, provided the proper infrastructure is in place.

For details see the Instructions for Use for the Support Tool.

Monitor Software Block Diagram

Figure 3 shows the functional block diagram for the monitoring system. A legend explaining terms and diagram elements follows. The information below varies depending on the purchased monitor options.

24

Monitor Theory of Operation

2 Theory of Operation

Philips Clinical			Input Devices		Visual	Audio					ECG-Out
		(including PS/2)			Indicators Indicators			Input Devices
Network
		Remote Extension			Remote Alarm Device		Video Out		(PS/2)	Nurse	Marker-In
			Device M8026A		M8025A
								MIB		Call
			SpeedPoint		LEDs Loudspeaker		Centronics
						Printer Connection
LAN					Interfaces						ECG-Out
			(LAN, Centronics, Display Controller, HIF Control,RS-422, PS/2, Remote Device I/F, Nurse Call, MIB)								Marker-In
MDSE					Interface Managers						Loudspeaker
					Record	Alarm	Trend		HiRes		ADT
	Applications				Reports		Calc Param		Events
System Services
Real Time Operating System
MDSE											RS-422
LAN
LAN	RS-422			M3015/16A							Flexible
				Measurement Server			LAN		RS-422		Module
M3001A Multi-				Extension							Server
				CO2, Press/Temp
Measurement Server
12-lead ECG/Resp, NBP, SpO2,

Press/Temp

M1006B		M1012A		M1018A		M1029A		M1032A		M1116B
Press		C.O.		tcPO2/CO2		Temp		VueLink		Recorder

Plug-In Modules

Figure 3 IntelliVue Patient Monitoring System Functional Block Diagram

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2 Theory of Operation

Monitor Theory of Operation

Block Diagram Legend

Functional Block	Description
Services
Operating System	The Operating System (OS) provides a layer of isolation between
	the specific hardware implementation and the application
	software. The OS performs system checks and allocates resources
	to ensure safe operation when the system is first started. This
	includes internal self-tests on several hardware modules and
	configuration checks for validity of configuration with the
	operating software. During normal operation, the OS continues
	to run checks on system integrity. If error conditions are detected
	the OS will halt monitoring operations and inform the operator
	about the error condition.
System Services	The System Services provide generic common system services.
	In particular:
	It uses a real-time clock component to track time. It synchronizes
	to network time sources and verifies the accuracy of the system
	time information. It is also responsible for managing persistent
	user configuration data for all Measurement Servers, Flexible
	Module Servers and IntelliVue Patient Monitoring System
	software modules. User configuration data is stored in a non-
	volatile read/write storage device
Applications
Reports	The Reports Service retrieves current and stored physiological
	data and status data to format reports for printing paper
	documentation. The following reports are supported:
	•	Vital Signs Report
	•	Graphical Trend Report
	•	Event Review Report
	•	Event Episode Report
	• ECG Report (12 Lead/Multi-Lead)
	•	Cardiac Output Report
	•	Calculations Report (Hemodynamic/Oxygenation/
		Ventilation)
	•	Calculations Review Report
	•	Wedge Report
	•	Test Report
	• Other reports (e.g. Loops, Review Applications, Drug
		report)
	The Reports service generates report data which can be printed
	on a local or a central printer.

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2 Theory of Operation

Functional Block	Description
Record	The Record Service retrieves current and stored physiological
	data and status data to format a continuous strip recording. A
	recording can be triggered manually by the operator or
	automatically by an alarm condition. The Record Service uses the
	services of the Recorder Interface to control an M1116B
	Recorder in the FMS. The Record Service can also send data to a
	central recorder.
Alarm	The Alarm Service contains logic that prioritizes alarm conditions
	that are generated either by the Measurement Servers, Flexible
	Module Server, or by IntelliVue Patient Monitoring System
	software modules. Visual alarm messages are displayed at the top
	of the IntelliVue Patient Monitoring System display and alarm
	sounds are generated by a loudspeaker. Alarm conditions may be
	generated when a physiological parameter exceeds preselected
	alarm limits or when a physiological parameter or any other
	software module reports an inoperative status (technical alarm,
	for example, the ECG leads may have fallen off the patient). The
	Alarm service manages the alarm inactivation states, for example
	suspension of alarms, silencing of alarms, and alarm reminder.
	Alarm signals may also be configured as latching (alarm signals
	are issued until they are acknowledged by the operator, even
	when the alarm condition is no longer true). The Alarm service
	controls the visual alarm signals (alarm lamps).
Trend	The Trend service stores the sample values of physiological data
	and status data with a resolution of 12 seconds, 1 minute or 5
	minutes for a period of up to 48 hours. The data is kept in
	battery buffered read/write storage and flash memory devices to
	be preserved across power failures. The stored data is protected
	via consistency checks and checksums. When a new patient is
	admitted, the trend database erases all data of the previous
	patient.
HiRes	The OxyCRG (Oxygen CardioRespiroGram) service derives a
	high-resolution trend graph from the Beat-to-Beat Heart Rate,
	SpO2 or tcpO2, and Respiration physiological data. The
	OxyCRG is specialized for neonatal applications, allowing the
	opeartor to identify sudden drops in Heart Rate (Bradycardia)
	and SpO2 or tcpO2 (Desaturations), and supporting the operator
	in visualizing Apnea situations.
ADT	The ADT (Admit/Discharge/Transmit) service maintains the
	patient demographics information. The operator may admit a
	new patient, discharge the old patient and enter or modify the
	patient demographics. The ADT service also supports the
	transport of a patient (trend database) with the M3001A Multi-
	Measurement Server. The ADT service controls the deletion of
	old patient data, the upload of trend data from the M3001A and
	the switching back of all settings to user defaults. It also
	synchronizes patient information with a central station on the
	network.

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Functional Block	Description
Calc Param	The Calc Param (Calculated Parameters) service accesses current,
	stored and manually entered physiological data as input to
	calculation formulas. With these formulas, derived
	hemodynamic, oxygenation and ventilation variables are
	computed. The calculation results, including the input
	parameters, are stored for later review using the Trend service.
Interface Managers
MDSE	The MDSE (Medical Data Service Element) Interface Manager is
	responsible for the exchange of real-time data between the
	IntelliVue Patient Monitoring System display unit and the
	Measurement Servers and Flexible Module Server as well as
	between the IntelliVue Patient Monitoring System display unit
	and other devices attached to the network. MDSE establishes and
	maintains a data communication link between the devices. It
	provides configuration information about the remote device to
	applications in the local device and it allows the exchange of
	measurement data and status information between the devices.
Printer	The Printer Interface Manager provides a high level interface to a
	printer. It provides means to:
	• establish a connection to the printer
	• transfer data to the printer
	• get status of the printer
	• close connection to the printer
	The Printer Interface Manager also supervises the connection to
	the printer and whether the printer accepts data (for example
	paper out). The Printer Interface Manager notifies the operator
	in such cases.

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2 Theory of Operation

Functional Block	Description
Display & Operator Interface	The Display and Operator Interface Manager performs the
	following tasks:
	• Screen presentation of real-time and stored physiological
	measurement data, alarm condition data and status
	information received from the MDSE interface manager,
	the Alarm service or other IntelliVue Patient Monitoring
	System modules
	• Screen presentation of operating controls (control
	windows)
	• Processing of operating control commands received from
	HIF Control interface. The module verifies and interprets
	the received commands and forwards them to other
	software modules of the IntelliVue Patient Monitoring
	System display unit, Measurement Servers or Flexible
	Module Server
	• Sound generation (issues audible alarm signals and
	generates audible information signals, for example QRS
	and SpO2 tones, operator audible feedback)
Interfaces
LAN	The LAN interface implements the physical layer of IEEE 802.3.
	The LAN interface performs Manchester encoding/decoding,
	receive clock recovery, transmit pulse shaping, jabber, link
	integrity testing, reverse polarity detection/correction, electrical
	isolation, and ESD protection. Electronically separated interfaces
	are used for communication to the Measurement Servers or
	Flexible Module Server and to the network.
Centronics	The Centronics interface implements the standard signaling
	method for bi-directional parallel peripheral devices according to
	IEEE 1284-I. The interface is used as a parallel interface to a
	standard printer with electrical isolation and ESD protection.
Display Controller	The Display Controller Interface consists of a video controller
	chip, video RAM and the controlling software. The Display
	Controller interface processes the high level display commands
	(character and graphic generation, wave drawing) and translates
	them into pixels, which are written into the video RAM where
	the video controller chip generates the video synchronization
	signals and the pixel stream for the external display.
HIF Control	The HIF (Human Interface Control) interface scans the Human
	Interface devices for operator controls (Touch Screen, Trim
	Knob, and PS/2 devices), formats the collected data and sends it
	to the display and Operating Interface.

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Functional Block	Description
ECG-Out Marker-In	The ECG Out/Marker In interface receives the ECG waveform
	directly from the ECG/Resp Arrhythmia ST-Segment
	physiological algorithm via an RS-422 serial interface and
	converts the digital ECG signal to an analog ECG signal. In
	addition, the ECG Out controller receives from a connected
	device the marker information and forwards this data to the
	ECG/Resp Arrhythmia ST-Segment physiological algorithm.
	The converted analog signal is used to synchronize a connected
	device to the patient’s ECG
RS-422	The serial link RS-422 interface communicates the ECG signal
	to the ECG Output/Marker In of the IntelliVue Patient
	Monitoring System display unit. The interface is a serial,
	differential, full-duplex link. The interface is ESD protected.
PS/2	The PS/2 interface supports the serial protocol of standard PS/2
	devices (mouse). The PS/2 serial protocol is interpreted by the
	HIF Control interface.
Remote Device Interface	The remote device interface is an interface to the remote alarm
	device and the remote extension device. The interface
	communicates with the remote devices via a differential serial
	link.
Nurse Call	The Nurse Call board contains 2 connectors. A phone jack type
	connector and a multi-port connector. The phone jack type
	connector has a single close-on-alarm relay. The multi-port
	connector has three alarm relays which are configurable to be
	open or closed on alarm. In addition, this interface has an audible
	alert capability for loss of AC power.
MIB	The MIB interface allows full-duplex, short-haul asynchronous
	binary communication between the monitor and an arbitrary
	(medical/non-medical) device using an eight-pin RJ45 modular
	connector. Switching between MIB and RS232 protocol is
	possible.

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