Philips M2600 Service manual

Philips Telemetry System

Service and Reference Guide

m2600-90192

Part Number M2600-90192

Printed in the U.S.A. Date May 2002

Edition 2

Notice

Proprietary

Information

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

This document contains proprietary information that 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 Medical Systems 3000 Minuteman Road Andover, MA 01810-1085 (978) 687-1501

Publication number M2600-90192 Printed in USA

Philips Medical Systems 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 Medical Systems 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.

Printing

History

Copyright Copyright © Philips Medical Systems, 2002

New editions of this document will incorporate all material updated since the previous edition. Update packages may be issued between editions and contain replacement and additional pages to be merged by a revision date at the bottom of the page. Note that pages that are rearranged due to changes on a previous page are not considered revised.

The documentation printing date and part number indicate its current edition. The printing date changes when a new edition is printed. (Minor corrections and updates that are incorporated at reprint do not cause the date to change.) The document part number changes when extensive technical changes are incorporated.

First Edition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .June 2000

Second Edition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .May 2002

1. Introducing the Philips Telemetry System. . . . . . . . . . . . . . . . . . . . . .1-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Philips Telemetry System Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Philips Telemetry System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Leadsets and SpO2 Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Antenna System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Frequency Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Receiver Mainframe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Analog Output Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

TeleMon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Telemetry Configuration Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Telemetry Service Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Leadsets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

3-Wire Leadset (Standard ECG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

5-Wire Leadset (Standard ECG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

5-Wire Leadset (EASI ECG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

SpO2 Transducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Front End Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Case Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Transmitter Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Manual SpO2 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Leads Off LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

ECG PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Main PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Digital Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

ECG PCB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Lead Set Detect Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Transmitter Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Leads Off LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Serial Infrared Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Power Supply Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Memory Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

RF Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

SpO

Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12

SpO2 T ransducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

SpO2 Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Battery Extender. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16

Antenna Distribution Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16

Receiver Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17

Digital Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17

Rack Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17

Configurable Processor Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18

Utility CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18

SDN Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18

Patient Monitor/Holter Recorder Interface (Analog Output) . . . . . . . . . . . . . . . . . .1-19

Contents 1

Receiver Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

RF Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

Frequency Synthesizer Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

Digital Baseband Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Peripheral Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

M2613/14/15A Dual-Band UHF Antenna System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

406 - 480 MHz Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

590 - 632 MHz Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

Dual-Band Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

Antenna Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

Combining Networks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

Frequency Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

M2608A Active Antenna/Combiner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

Line Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

2-Way and 4-Way Splitter/Combiners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

Multiple Power Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

Power Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

Frequency Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

External Frequency Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

Internal Frequency Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

Attenuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

Bandpass Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

2. Service Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Transmitter Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Receiver Mainframe Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Rear View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Turning the Telemetry System On/Off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Turning on the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Turning on the Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Turning on Antenna Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Setting Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Matching a Transmitter Frequency to a Receiver Frequency. . . . . . . . . . . . . . . . . 2-6

Changing a Transmitter’s Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Using the Transmitter Service Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Using the Telemetry Configuration Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Using the TeleMon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Using the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Changing the Receiver Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Using the Central Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Using the Telemetry Service Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Setting a Transmitter’s Frequency After Repair . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Checking for Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Using the RF History Strip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Using the RF INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Error Messages While Setting Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Contents 2

Managing Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12

Using the Frequency & Check Code Listing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12

Frequency Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Frequency Management? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Frequency Management Responsibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Frequency Management Updating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Interference from Wireless Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Required Information for Frequency Management . . . . . . . . . . . . . . . . . . . . 2-14

Interference Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Avoiding Interference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Extended UHF Band Frequency Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15

Channel 37 (608-614 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Channels 34, 35, 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Available Frequency Management Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Using the Built-in RF Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22

Turning on the RF INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22

Printing RF History Strips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-23

Checking Receiver Mainframe Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-23

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Using the Central Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Checking Transmitter Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-24

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Using the Telemetry Configuration Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Using the TeleMon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Using the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Changing Transmitter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-25

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

Using the Telemetry Configuration Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Using the TeleMon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Using the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Changing Receiver Mainframe Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-27

Performing Learn Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-29

Checking Revision Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30

Transmitter Revision Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Using the Telemetry Configuration Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Using the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Receiver Mainframe Revision Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-31

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

Using the Central Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

Locating Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32

Upgrading Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-33

Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-33

Receiver Mainframes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-33

Rev D to Rev D Rev E to Rev E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

Rev D to Rev E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

Rev E to Rev D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

Performing Self-Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-36

Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-36

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

Using the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-37

Using the Telemetry Service Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

Contents 3

3. Maintaining the Philips Telemetry System . . . . . . . . . . . . . . . . . . . . . 3-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Caring for the Philips Telemetry System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Cleaning the Receiver Mainframe and Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Cleaning the Receiver Mainframe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Cleaning the Transmitter & Battery Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Wiping the Transmitter Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Wiping the Battery Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Wiping the Battery Extender. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Soaking the Transmitter & Cradle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Cross-infection Prevention for the Transmitter & Battery Extender. . . . . . . . . . . . . . . . 3-6

Cleaning the Transmitter and Battery Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Cross-infection Prevention and Aeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Equipment and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Cross-infection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Aeration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Testing the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Cleaning ECG Patient Cables and Leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Disinfecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Sterilizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Cleaning SpO

Adapter Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Reusable Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Adapter Cables & Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Troubleshooting Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Telemetry Troubleshooting Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Subsystem Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Transmitter Non-RF/Application Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

LEADS OFF INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

TRANSMITTER OFF INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

INVALID LEADSET INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

NO SIGNAL INOP and an RF OUT OF LOCK INOP at Wave Viewer . . . . . . . . . . 4-8

Battery INOPs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

ECG EQUIP MALF INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

TRANSMITTER MALF INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

ARRHY REQUIRED INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Transmitter SpO2 Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

EQUIP MALF INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

ERRATIC INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

INTERFERENCE INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

NO TRANSDUCER INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

NOISY SIGNAL INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

NON-PULSATIL INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

TRANS MALF INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Contents 4

Receiver Mainframe/System Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

Power Does Not Come On when Receiver Mainframe is Plugged In . . . . . . . . . .4-14

NO DATA FROM BED INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

Receiver Non-RF Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18

NO RECEIVER INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18

RECEIVER MALF INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19

Other Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20

Pressing the Transmitter Button Does Not Give the Desired Result . . . . . . . . . . .4-20

RF Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21

RF Problem Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21

RF Problem INOPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

CNR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Low Signal Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Interference Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Gathering Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23

Methodology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23

Observe System Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23

Question the User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23

Check the RF History Strips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

INVALID SIGNAL E01 INOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-24

Frequent Dropouts and NO SIGNAL, WEAK SIGNAL and TEL CANNOT

ANALYZE INOPs on a Single Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25

Changing Frequencies to Troubleshoot Single-Channel Problems. . . . . . . . 4-27

Frequent Dropouts and NO SIGNAL, WEAK SIGNAL, and TEL CANNOT

ANALYZE INOPs with Multiple Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29

Frequent Dropouts and TEL CANNOT ANALYZE and INTERFERENCE INOPs .4-30

RF Troubleshooting Tools and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-32

RF INOP Real-time Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-32

RF History Strip Historical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-33

Received Signal Strength . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Invalid Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

Analyzing RF History Strips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-37

Expected Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

RF History Strip - helpful hints: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

Example of No Receiver Installed in a Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-38

Examples of Good Mean Signal Strength and Good Performance . . . . . . . . . . . .4-39

Examples of Low Signal Strength and Good Performance . . . . . . . . . . . . . . . . . .4-40

Examples of Patient Leaving Coverage Area or Sleeping in an RF Null . . . . . . . .4-41

Problems due to Low Signal Strength. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-42

Examples of RF Auto Shutoff. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43

High Power Narrowband Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-44

Example: No Battery in Transmitter, No Interference Present. . . . . . . . . . . . 4-46

Example: No Battery in a Transmitter, Interference Present . . . . . . . . . . . . . 4-47

Broadband Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-48

Multiple Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-49

Distinguishing M1400X Transmitters from M2601A Transmitters . . . . . . . . . . . . .4-49

Performance Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-50

One Hour Time Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52

Distinguishing RF Performance from LEADS OFF . . . . . . . . . . . . . . . . . . . . . . . .4-54

Monitoring a Channel for a Clear Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-55

Antenna System Troubleshooting Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-56

Equipment Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-56

Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-58

General Faults and Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-60

Extended-Band Upgrades Faults, and Symptoms. . . . . . . . . . . . . . . . . . . . . 4-60

Analog Output Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-64

Contents 5

5. Disassembling the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Disassembly/Assembly of the Leadset Combiner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Disassembly of the Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Single-Use Screw Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Removing the Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Removing the Battery Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Removing the Case Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Removing the Main Cage Brace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Removing the SpO2 or Blank PC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Removing the ECG PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Removing the Main PCB and Front End Assembly . . . . . . . . . . . . . . . . . . . . 5-14

Removing the Battery Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

6. Reassembling the Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Single-Use Screw Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Torque Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Installing the Front End Assembly and Main PCB . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Installing ECG PCB and SpO2 Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Re-installing a Blank SpO2 Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Installing the Main Cage Brace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

Replacing/Re-installing the Case Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Replacing/Re-installing the Battery Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

Replacing/Re-installing the Battery Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

Post Assembly Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

7. Disassembly/Assembly of Receiver Mainframe Components . . . . . 7-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Disassembly/Assembly of the Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Removing Function Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Replacing Function Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Removing the Front Dress Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Replacing the Front Dress Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Removing Receiver Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Replacing Receiver Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Removing the Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Replacing the Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Removing the Rear Brace (European Version Only) . . . . . . . . . . . . . . . . . . . . 7-7

Replacing the Rear Brace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Removing the Antenna Distribution Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Replacing the Antenna Distribution Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Removing the Chassis Cooling Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Contents 6

Replacing the Chassis Cooling Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Replacing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

Removing the Rack Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Replacing the Rack Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Removing the Receiver Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

Replacing the Receiver Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

Removing the Digital Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Replace the Digital Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Removing the Antenna Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

Replacing the Antenna Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

Receiver Mainframe Post Assembly Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-17

Disassembly/Assembly of a Receiver Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18

Tools Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18

Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-19

RF Cable Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Receiver Shield Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Large Receiver Shield Gasket (U-shaped) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Small Receiver Shield Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Receiver Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Receiver Board Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Reassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-19

Receiver Board Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Receiver Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Small Receiver Shield Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Large Receiver Shield Gasket (U-shaped) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Receiver Shield Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

RF Cable Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

8. Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

Ordering New Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2

Ordering Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Philips Offices Worldwide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2

Unlisted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

Receiver Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-10

Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12

Analog Output Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-16

M2613/14/15A Antenna System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17

Frequency Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-19

Release C Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-20

Contents 7

9. Standard Antenna System Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Setting Expectations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Determining Needs and Gathering Site Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Standard and Non-Standard Antenna System Design . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Standard Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Non-Standard Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Standard Coverage Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Rectangular Coverage Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Number of antennas required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Special Coverage Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Non-rectangular coverage areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Shielded Areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Large Open Areas and Hallways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Antenna Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Signal Reception. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Signal Preservation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Designing Standard Antenna Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

Outlining and Marking the Coverage Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

Calculating Coverage Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Determining Antennas for Contiguous Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Determining Antennas for Non-Contiguous Areas . . . . . . . . . . . . . . . . . . . . . . . . 9-13

Placing and Connecting Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13

Ordering Antenna System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

Pre-configured Antenna Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

Pre-configured Combining Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17

Site Information Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19

Contents 8

Appendices

A. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Battery Life Expectancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Battery Extender. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

ECG Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

SpO2 Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

Receiver Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Antenna System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9

Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12

Declaration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12

Electromagnetic Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13

Philips Telemetry System Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13

EN61000-4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13

IEC 801-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13

Philips Telemetry System Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Avoiding EMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

FCC Compliance (USA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Canadian Radio Equipment Compliance (Canada Only). . . . . . . . . . . . . . . . . . . A-15

System Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16

Type CF Defibrillation Proof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-19

B. Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Basic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Product Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Feature Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Frequency Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

ECG Accessory Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

SPO2 Accessory Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Installation Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Receiver Mainframe Mounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Patient Monitor/Holter Recorder Interface Cables and Faceplates . . . . . . . . . B-5

Dual-band UHF Antenna System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Pre-Configured Antenna Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

M2613A Dual-band UHF Non-Plenum Antenna Systems . . . . . . . . . . . . . . . . B-6

M2614A Dual-band UHF Plenum Antenna Systems . . . . . . . . . . . . . . . . . . . . B-6

Pre-configured Combining Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

M2615A Dual-band Antenna System Combining Network . . . . . . . . . . . . . . . B-7

Antenna Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Antenna System Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Attenuator (M2609A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Bandpass Filter (M2612A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

External Frequency Converter (M2616A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Antenna System Accessories (M2617A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Supplies and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

ECG Leadset with Telemetry Combiner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

ECG Electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

SpO2 Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11

Transmitter Pouches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11

Battery Products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11

Feature Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11

Contents 9

C. M2613/14/15A Antenna System Troubleshooting -

Pass/Fail Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

M2613/14/15A Dual-Band UHF Antenna System . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Frequency Option 001 406-412.5 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Frequency Option 002 412.5-421.5 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Frequency Option 003 421.5-430 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Frequency Option 004 430-440 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

Frequency Option 005 440-450 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6

Frequency Option 006 450-460 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

Frequency Option 007 460-470 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8

Frequency Option 008 470-480 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Frequency Option 034 590-596 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10

Frequency Option 035 596-602 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-11

Frequency Option 036 602-608 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-12

Frequency Option 037 608-614 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-13

D. M1413/14/15B Antenna System Troubleshooting -

Pass/Fail Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

M1413/14/15B Digital UHF Antenna System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Antenna Strings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Combining Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

M1408A Active Antenna/Combiner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

Line Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

2-Way and 4-Way Splitters/Combiners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Multiple Unit Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Power Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Frequency Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5

Frequency Option 001 - 406-412.5 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5

Frequency Option 002 - 412.5-421.5 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . D-6

Frequency Option 003 - 421.5-430 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-7

Frequency Option 004 - 430-440 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-8

Frequency Option 005 - 440-450 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-9

Frequency Option 006 - 450-460 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-10

Frequency Option 007 - 460-470 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-11

Frequency Option 008 - 470-480 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-12

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-13

Contents 10

E. INOP Logs, Status Logs, and Error Codes . . . . . . . . . . . . . . . . . . . . E-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

INOP Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Status Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

Device Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

Heart Module Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4

Rack Manager Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

Alarm Manager Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-9

SDN Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-12

INOP Module Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-13

Service Module Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15

User Interface Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-17

3-Channel ST Module Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-23

F. Wave Viewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2

Wave Viewer Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3

Wave Viewer Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

ECG Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

SpO2 Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-5

Starting the Wave Viewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6

Exiting the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-8

Using the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9

To Check Wave Viewer Revision Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9

To Check Transmitter Revision Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9

To Check Transmitter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9

To Change Transmitter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-10

To Copy Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-10

To Configure Specific Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-11

To Change a Transmitter’s Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-12

To Test the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-12

Troubleshooting the Wave Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-14

Wave Viewer Hangs-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-14

Wave Viewer will not Communicate with the Transmitter . . . . . . . . . . . . . . . . . . F-14

Wave Viewer Beeps and Shuts Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-14

Cleaning the Palmtop Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-15

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-15

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-16

Contents 11

Contents 12

Overview

Introducing the Philips Telemetry

System

Chapter 1 provides a functional description of the Philips Telemetry System.

It describes how the system works as a whole and explains the various assemblies that make up the telemetry system.

Following are the topics in this chapter.

• Philips Telemetry System . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

• Receiver Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

• Receiver Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

• M2613/14/15A Dual-Band UHF Antenna System. . . . . . 1-22

Philips Telemetry System Compatibility

Warning Philips Medical Systems has done extensive validation of the systems

Software and hardware compatibility information provided in this document is valid at the time of publication. New revisions are likely.

Compatibility revision changes are updated regularly in Service Notes. Information in this document reflects information provided in Service Note

M2600A-007G Compatibility Char ts and M2600A -008G Softwar e Hist ory. As

updates occur, the last character in the service note number increments (for example, M2600A-007G, H, I). The latest Service Note is available from a Philips Medical Systems Response Center.

specified as compatible in the compatibility charts. Failure to adhere to these compatibility charts could result in a malfunction or in unspecified behavior.

Introducing the Philips Telemetry System 1-1

Philips Telemetry System

The Philips Telemetry System consists of the following components. See

Figure 1-1.

1. pocket sized Transmitters with removable Leadsets and SpO Transducers

2. Philips Receiver Mainframe

3. Philips Receiver Modules (up to 8), housed in the Receiver Mainframe

4. active and passive Antenna Components

5. TeleMon (M2636B)

6. Telemetry Configuration Tool

7. Telemetry Service Tool

Patient Electrode Lead Set

Transmitter

9-V

Battery

SpO

Transducer

Digital UHF

Signal

Antenna System

Receiver Mainframe

IR Link

TeleMon

Configuration

Tool

Service

Tool

RCVR

Module

Processing &

Distributing CPUs

(up to 8

Receiver Modules

per Mainframe)

Link

SDN

System

Communications

Controller

Figure 1-1 Philips Telemetry System Block Diagram

Leadsets and SpO

Transducer

The telemetry system provides ECG and SpO2 monitoring of ambulatory and

non-ambulatory patients. ECG and SpO from the patient via Patient Electrode Leadsets and an SpO

data are acquired by the Transmitter

Transducer.

Transmitter The Transmitter processes the signals and broadcasts them via Radio

Frequency (RF) to the Receiver and via infrared signals to the TeleMon.

Antenna System The Antenna System is designed to create coverage areas where radio

signals can be picked up. Standard band transmitters broadcast signals at characteristic frequencies between 406 and 480 MHz. These signals are received by the antenna system, which distributes them to the receiver

Central Station

1-2 Introducing the Philips Telemetry System

Philips Telemetry System

mainframe. Inside the mainframe, they are distributed further to the receiver modules, each of which is tuned to receive from one transmitter.

For operation at extended UHF frequencies, transmitters broadcast signals in the range 590-632 MHz. These signals are received by the antenna system and sent to the Frequency Converter.

Frequency Converter A Frequency Converter shifts or “converts” the signal from the antenna

system to a lower frequency. The “converted” signal is then fed into the receiver mainframe, which distributes it further to the installed receivers. The receivers are tuned to the transmitter frequency less the Frequency Converter frequency. The Frequency Converter can be external to the Receiver Mainframe (Option #C07) or on a PC board internal to the Receiver Mainframe (Option #C08)

Receiver Mainframe The Receiver Mainframe houses the Receiver Modules and converts the

received signal into a format that can be sent over the network and routes the signal to the central station for display and analysis. The Receiver Mainframe can accommodate up to 8 Receiver Modules.

Analog Output Option An Analog Output Option converts the SDN formatted signal back into an

analog value in the mainframe and is routed to a bedside or a Holter interface.

TeleMon The M2636B TeleMonB is a portable monitor display that can be docked to a

transmitter via an IR link. It provides local display of 2 waves -- ECG waveforms, pleth wave or a delayed/annotated arrhythmia wave -- and numerics for heart rate, % SpO

, and NBP. The TeleMon also transmits NBP, recording, suspend

requests, and INOPs through the transmitter to a Philips Information Center simultaneously with the transmission of the Transmitter’s ECG and SpO

signals.

Note Use of the TeleMon is not described in detail in this Guide. For information on

the TeleMon Monitor, consult the (PN M2636-90035), which includes the following

TeleMonB Customer Documentation CD ROM

M2636B TeleMonB Monitor

documents:

• Instructions for Use

• Service Manual

• Quick Guide

Telemetry

Configuration Tool

The Telemetry Configuration Tool is a software application that runs on a computer that operates DOS and links to the transmitter via an IR link. It can be used to set several transmitter parameters -- operating frequency, %SpO

sample

rate, auto shut off. For a description of the Telemetry Configuration Tool, see

Philips Telemetry System Configuration Tool Guide on the Philips Telemetry

the

System Service and User Documentation CD ROM

(PN M2600-90187).

Telemetry

Service Tool

The Telemetry Service Tool is a software application that runs on a computer that operates Windows 98 or Windows NT. It links to transmitters via an IR link and to the Receiver Mainframe via an RS232 PC board that must be mounted in in the rear of the Mainframe. The Service Tool can be used for a variety of configuration, service, and firmware upgrading tasks. For a description of the Telemetry Configuration Tool, see the

Guide

on the Philips Telemetry System Service and User Documentation CD

ROM

(PN M2600-90187).

Philips Telemetry System Service Tool

Introducing the Philips Telemetry System

1-3

Transmitter

The Philips Transmitter is a battery powered (9-volt) Transmitter worn by the patient. It acquires ECG and SpO and SpO

Transducer, amplifies and digitizes the data, and broadcasts them at

data from the patient via a ECG Leadset

ultra high frequency (UHF) to a Receiver Module in the Receiver Mainframe.

processing occurs in the Transmitter. ECG processing takes place in the

SpO

Receiver Mainframe, Central Station, or at the bedside (analog output).

The Transmitter consists of the following assemblies. See Figure 1-1.

•ECG Leadset

• SpO

Transducer

• Front-end Assembly

• Case Assembly

• ECG Printed Circuit Board (PCB)

• Main Digital PCB, which contains the following subsections:

a. digital section

b. RF section, including the synthesizer

c. power supply

• SpO

PCB

Transducer

•Battery

• Battery extender

1-4 Introducing the Philips Telemetry System

Transmitter

RF Connected to

Leadset Shield

Front End Assembly

RF Cable

Main PCB

Ref.

Defibrillator Protection

Lead Sel.& Calibration

A to D Converter (Analog Portion)

RF Out

Frequency

Synthesizer Modulator

SIR

Interface

Window

A to D Converter (Digital Portion)

EEPROM

Lead Off

LEDS

ECG PCB

Digital

ASIC

RAM

EASI Leadset

ECG Leadset

Leadset Detect Switch

DSP

Patient

Button

Power Supply

SpO

2 Connector and Gasket

SpO2 Transducer

Photo Current

Rtype/Rlambda

LED Current

Photo Amplifier

Clip Output

Selftest Signal Generator

RCode Measurement

LED Driver

Bandpass

MAIN - CPU

SpO2 PCB

Variable Gain

ADC

ASIC

Pierce Osc.

Digital Signal Processor

Case Assembly

Battery

Contacts

Cradle

PWR

Module

Wall Receptacle

Figure 1-2 Block Diagram of Philips Transmitter

Leadsets The standard ECG system supports two leadset configurations: 3-wire and 5-

wire. With a 3-wire leadset, only 1 lead is transmitted (lead II is the default), and leads I, II, or III can be selected if the transmitter is configured for 3-wire leadset selection. For EASI, a 5-wire leadset is required.

The ECG leadset provides connection from the inputs of the transmitter to the electrodes on the patient. Each lead has its own front end circuitry in the transmitter that routes the signal from each lead to the transmitter’s processing circuits. The transmitter sources an active lead for each connection. Each signal is then combined to generate the transmitted leads.

3-Wire Leadset

(Standard ECG)

The 3-wire leadset broadcasts one lead (lead II is the default) of ECG for display at the Central Station. The selection of leads for display using the 3wire leadset are determined by whether the lead selection function is enabled (

Yes) or disabled (No - factory default) in the transmitter

configuration.

Introducing the Philips Telemetry System

1-5

Transmitter

Lead Selection Enabled - With lead selection enabled, the cardiotach lead, which is broadcast, can be selected using the Telemetry Service Tool or Wave Viewer. In this mode, the broadcast lead can be selected from Leads I, II, or III. The lead label is automatically changed at the Central Station when the lead is changed.

Lead Selection Disabled (Factory Default) - When lead selection is disabled, the broadcast lead is set at Lead II. The only way the lead can be changed is by changing the electrode placement on the patient to a non-standard configuration. When doing this, place the leads that normally monitor lead II over the limb lead to be monitored. This means that Leads I, II, III, or MCL can be monitored; however, the central station will still display Lead II. The lead label must also be changed at the Central Station to the lead being broadcast.

5-Wire Leadset

(Standard ECG)

With the 5-wire leadset, 3 leads are broadcast: II, III, and MCL. From these 3 leads, the software in the receiver mainframe can reconstruct the remaining 5 leads: I, aVR, aVL, aVF, and a true V lead. The leads to view can be selected at the Central Station.

5-Wire Leadset

(EASI ECG)

When the transmitter is configured for monitoring the 12-lead EASI ECG, a 5wire leadset must be used. The 3 directly acquired or “raw” EASI leads (AI, AS, ES) are broadcast by the transmitter. Software in the Philips Information

2 3

4 5

Center mathematically reconstructs the following leads: I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6, and will perform arrhythmia analysis on 2 of the leads and ST analysis on all 12.

EASI

If monitoring is attempted with a 3-wire leadset attached to an EASI ECG transmitter, the system will report an message (INOP) at the central station.

SpO2 Transducer When SpO

processed by a dedicated SpO parameter values are sent as part of the broadcast.

Front End Assembly

The Front End Assembly the Transmitter is where the ECG Leadset and the

Transducer plug in. It contains the following features:

SpO

1. Leadset detect switches that identify which leadset (3- or 5-lead) is connected to the transmitter and sends the information to the digital ASIC on the Main PCB. The leadset detect switches are positioned next to the RL and V lead wires in the standard ECG configuration, or next to the Reference and E lead wires in the EASI configuration (the two connector cutouts are rectangular not square).

2. High impedance resistors that provide defibrillator protection to the signal acquisition circuits on the ECG PCB.

3. Radio Frequency (RF) cable connection to the leadset shield that allows the RF signal to be transmitted through the leadset, which acts as an antenna.

INVALID LEADSET inoperative

is monitored, the data are received via a SpO2 Transducer,

circuit within the transmitter, and the

1-6 Introducing the Philips Telemetry System

Transmitter

Case Assembly The Case Assembly provides protection to the internal electronics of the

transmitter. It also contains the nurse-call button and the leads-off Light Emitting Diodes (LEDs).

Transmitter Button The Transmitter Button is a membrane switch that toggles a bit in the

transmitted message to ON when the switch is pressed. Electrically, the transmitter button has two positions:

OFF (not pressed) ON (pressed)

The Transmitter Button can be configured in the receiver mainframe to perform the following actions when it is pressed:

1. generate a yellow-level nurse call alarm at the central station

2. generate a recording at the central station

3. generate both a nurse call alarm and a recording at the central station

4. do nothing

Once the alarm or recording has been started, it can only be stopped at the central station. Pressing the button on the transmitter again does not affect the alarm or the recording.

Manual SpO

Measurements

Even if the transmitter button is configured for DISABLED or if the button is

turned

OFF at the central station, Manual SpO

Transmitter button are still possible.

If a transmitter is set for intermittent SpO

measurements (manual mode, 1

minute and 5 minutes), manual measurements from the transmitter can be initiated at any time using the transmitter button or Wave Viewer. SpO be turned on at the central station for alarms and for display and trending.

Note If the transmitter is in manual mode, the SpO

will turn on automatically when a measurement is initiated. If the transmitter is in the 1-minute or 5-minute sample mode, SpO central station by the user.

To initiate a Manual SpO2 Measurement at the transmitter, do the following:

• Plug the transducer cable into the transmitter.

• Attach the transducer to the patient.

• Press and hold the transmitter button (approximately 6 seconds) until the LA light for standard ECG (S light for EASI ECG) begins flashing. When the transducer light turns off, the measurement is complete.

• Remove the transducer from the patient after the transducer light goes out. The measurements value and time stamp will be displayed at the Central Station for up to 1 hour or until the next measurement is made, whichever comes first.

Measurements using the

must

parameter at the central station

must be turned on at the

Leads Off LEDs A Leads Off Light Emitting Diode (LED) turns on whenever one of the

leads falls off the patient, or if the circuitry for that lead is defective. There is one LED for each electrode, and they are shown in the electrode placement diagram on the transmitter in the standard lead placement.

Introducing the Philips Telemetry System

1-7

Transmitter

ECG PCB The ECG Printed Circuit Board (PCB) contains the ECG Front-end

Circuitry, which acquires the ECG signal from the leadset. This circuitry provides basic preamplification of the signals, filters the signals, then performs the first stage of analog-to-digital conversion.

The output circuit of the reference drive sums the outputs of the four other electrode inputs to generate one output that is used for improving common mode rejection performance. The reference drive output can be switched to drive any of the four input electrodes.

The Front-end Circuitry for each input electrode does the following:

• acquisition and preamplification of ECG signal

• bandpass filtering and conditioning of the signal

• Initial analog-to-digital conversion of the ECG signal

Each Analog-to-Digital Converter consists of the following subcircuits:

• input buffer amplifier

• low frequency summing amplifier

• integrating analog-to-digital converter

The circuitry for each electrode is the same. Resistors of the input buffer amplifier provide input protection for the front end ICs. An operational amplifier sets the noise performance of the incoming ECG signal by filtering out unwanted noise on the input leads. A low frequency feedback summation amplifier provides preamplification and further conditioning of the incoming ECG signal. The final stage of the analog section is a pulse width modulated A/D converter. This is the first stage of the analog-to-digital conversion of the ECG signal. The second stage takes place on the Main PCB.

Main PCB The Main PCB contains the main processing and signal transmitting circuits

for the transmitter. The Main PCB can be broken into 3 functional areas:

• Digital Section

•RF Section

• Power Supply

Digital Section The Digital Section of the transmitter consists of a digital ASIC, digital signal

processor (DSP), and memory. The digital ASIC consists of a gate array, which provides interfaces to the DSP from the following circuits:

•ECG PCB

• 3/5 wire leadset switch

• nurse-call button

• Leads Off LEDs

• SpO

• Serial infrared (IR) port to Wave Viewer

• Control lines for the frequency synthesizer

• RF output circuit

• Power Supply control

• Memory Section

circuits

1-8 Introducing the Philips Telemetry System

Transmitter

The gate array consists of latches and logic control gates that control the flow of information to the DSP. The DSP then processes the signal from each interface and includes it into the transmitted message. The following paragraphs describe each interface controlled by the gate array and processed by the DSP.

ECG PCB Interface The ECG PCB Interface is a gate array that receives the output for each of

the 4 input electrodes and routes the signal to the DSP for the following processing:

• Final analog-to-digital conversion of each lead signal.

• Checks for Leads-Off conditions

• Processing of the leads to be transmitted

• Pace pulse detection and processing

Lead Set Detect

Circuit

A Lead Set Detect Circuit in the Transmitter senses whether a 3-wire or 5- wire leadset is being used. The transmitter has 2 pressure sensitive switches that change from high impedance to low when an RL or V lead wire (standard ECG leadset) or a Reference or E lead wire (EASI leadset) is inserted into the connector.

Note When replacing patient leadsets, it is very important to connect them properly.

An incorrect connection can cause the transmitter to detect the wrong leadset

Transmitter Button The Transmitter Button on the Case Assembly has a direct connection to

the Digital Section of the Main PCB. Refer to the previous section or the

Instructions for Use for the Central Station for more information on the

transmitter button.

Leads Off LEDs Leads Off LEDs on the Case Assembly indicate when the leads are properly

connected to the patient. When the leads are properly connected, the LEDs are off. When the Digital Section of the Main PCB senses a lead off condition, it turns on the appropriate LED on the Case Assembly via a direct line.

In general, when the transmitter is on a patient or a simulator, a Leads Off LED will light to indicate that a lead wire is not connected. However, there are some subtleties in operation that may raise some questions for the service provider. The LED that is on depends on several factors: if a leadset is attached, which type of leadset is attached, how Lead Selection for a 3-wire leadset in the transmitter is configured and which electrode wire is off.

There are 2 switches in the transmitter where the leadset plugs in. If the 2 switches are closed, the transmitter knows that a 5-electrode leadset is attached to the transmitter. If they are open, the transmitter will respond as if a 3-electrode leadset is attached. Note that the transmitter cannot distinguish between a 3-electrode leadset and no leadset. For this reason, if no leadset is attached, the LEDs will react as if the transmitter has a 3-electrode leadset attached.

Introducing the Philips Telemetry System

1-9

Transmitter

Knowing which electrode is the reference electrode is important for understanding how the LEDs work, and the reference electrode depends on which leadset is attached to the transmitter. If a 5-electrode is attached, the RL (standard ECG) or the Reference (EASI) electrode is always the reference lead.

If a 3-electrode leadset is attached, the reference electrode depends on which lead is being measured by the transmitter.

Lead Selection in the transmitter is configured to NO (factory default),

When the transmitter always measures lead II. Lead II is the voltage across the right arm and left leg (RA-LL) electrodes. This leaves the left arm (LA) as the reference electrode.

When

Lead Selection in the transmitter is configured to YES, then the lead

being measured can change and, as a result, the reference electrode can change.

Table 1-1. Reference Electrode for 3-Electrode Leadset with Lead

Selection Configured for YES

Selected

-+Reference

Lead

IRALALL

II RA LL LA

III LA LL RA

Which LED lights also depends on which electrode wire is off. If the wire for the reference electrode is off, only the reference electrode LED will be on – even if multiple electrode wires are off. If the wires for any other electrode or combination of electrodes are off, those LEDs will be on. There is one exception to this. If all the electrode wires except for the reference electrode are off, the transmitter cannot distinguish between this situation and the reference electrode wire being off. In this situation, only the reference electrode LED will be on.

From a user perspective, using the LEDs is simple:

• Attach the electrode wire(s) indicated by the LEDs on the transmitter

• Check the transmitter LEDs again

• If additional LEDs are on, attach the electrode wires indicated

• If a LED is on, and that wire is attached, then all of the other electrode wires must be off.

Serial Infrared Port The transmitter communicates to the TeleMon and Telemetry Configuration

Tool via the Serial Infrared Port (SIR). This port connects to the DSP via a 3 wire UART.

Power Supply Control The transmitter monitors the operation of the power supply and controls its

operation as appropriate. The digital section of the transmitter performs the following Power Supply Control functions:

1-10 Introducing the Philips Tele me try Sys tem

Transmitter

Battery type sensing - The transmitter works with 8.4- and 9-volt batteries (alkaline, zinc-air, and lithium) except when SpO

is being used.

Caution When using SpO

battery is used with SpO

BATTERY

If a

INOP are sent to the Central Station.

BATTERY WEAK message occurs, no SpO

communication can occur, but the ECG functions normally.

REPLACE BATTERY message occurs, all functions cease.

If a

Low Voltage and Replace Battery Circuit - If the battery voltage falls

below 6.6 volts, a battery weak signal is generated and transmitted to the central station as an INOP. If the voltage falls below 5.9 volts, the replace battery signal is generated and sent to the central station as an INOP.

Memory Section The Memory Section consists of a serial EEPROM, which stores the program

for the DSP. The program is loaded at power-up using a small set of instructions contained within the ASIC. The DSP runs the program out of internal DSP RAM. The EEPROM stores several variables so that configuration information is kept when the battery is removed. The external RAM is used as a communication buffer area.

RF Section The RF Section is a programmable frequency synthesized local oscillator

operating at ultra-high frequency. A temperature compensated crystal oscillator provides the reference frequency. The digital bit stream from the DSP is used to modulate the carrier frequency. These data are applied to the synthesizer voltage controlled oscillator (VCO). The VCO output drives a common-emitter bipolar transistor output stage. The output stage filter provides spurious filtering and transforms the 50 Ohm nominal impedance of the antenna circuit to present the optimum impedance to the output stage collector for high efficiency. The shielded cable of the ECG lead set serves as the broadcast antenna for the transmitter.

, zinc-air batteries cannot be used. If a zinc-air

, frequent BATTERY WEAK and/or REPLACE

or TeleMon

The transmitter frequency can be changed or set using the Telemetry Service Tool or TeleMon.

Power Supply The Power Supply provides all of the voltages for use by the transmitter. It

consists of 2 linear low dropout regulators of 3 and 5 volts. This provides the 5V and 2.5V needed for the operation of the transmitter. Power to the regulators is derived from an 8.4- or 9-volt battery. To protect against battery reversal, power for the battery is delivered to a pair of back to back MOSFETs.

Comparators sense and warn of low and replace battery conditions via the power supply control circuitry of the digital section. The replace battery indication is sent to the DSP to control shutdown so that the necessary housekeeping and replace battery message can be transmitted prior to shutdown.

Introducing the Philips Telemetry System

1-11

Transmitter

SpO2 Module The SpO

attaches to the patient’s finger, and a SpO

Module of the transmitter consists of an SpO2 Transducer, which

Board.

SpO2 Transducer The SpO2 Transducer measurement is based on the phenomenon that

oxygenated blood has different absorption in red and infrared light wavelengths, related to the oxygenation of the blood.The red and infrared LEDs in the SpO

sensor emit light, which is detected by a photo diode after

passing through the patient’s skin. The received signal is analog and digitally processed, which yields a pulsatile raw wave for the red and infrared absorption.

SpO2 Board The SpO

algorithm that calculates SpO representation for the given raw wave. The red and infrared LED signals are

Board is shown in Figure 1-3. It contains a Main CPU with an

, pulse rate and perfusion value in numeric

out of phase. At the receiving Photo Diode, the sum of the signals is analog processed and digitally demodulated. This method, based on the theory of quadrature modulation, produces signals that are highly resistant to noise (ambient light) and consumes less power than other methods.

Photo Amplifier

The transducer routes the input current from the photodiode to the Photo Amplifier. The Photo Amplifier performs the following functions:

• Converts the input currents to output voltages

• First order, low bandpass filters the input signals to eliminate incoming disturbances of higher frequencies.

SpO

Board

Photo Current from Transducer

Rtype/Rlambda

LED Current

Transmitter Interface

Photo Amplifier

Clip Output

Selftest Signal Generator

RCode Measurement

LED Driver

Bandpass

Main Processing CPU

Variable Gain

ADC

ASIC

Pierce Osc.

Digital Signal Processor

Figure 1-3 SpO2 Board Block Diagram

The Photo Amplifier is implemented as a differential amplifier to provide balanced input characteristics and to suppress incoming disturbances.

1-12 Introducing the Philips Tele me try Sys tem

Transmitter

A clipping detection circuit is connected to the output of the Photo Amplifier and serves as a controlling stage for the Photo Amplifier. By using a comparator connected as an inverting Schmitt Trigger, clipping of the Photo Amplifier signal caused by ambient light (for example) is detected. The output of this stage is connected to the front end controlling firmware of the Main CPU to generate an INOP alarm in case of excessive clipping. The comparator circuitry contains a hysteresis loop to avoid jittering of the output signal.

Bandpass Filter

The modulated signals coming from the photo amplifier pass through a third order Butterworth Bandpass Filter. This serves as an anti-aliasing filter and filters out all disturbance frequencies outside a passband centered on the modulation frequency.

Variable Gain Amplifier and Analog to Digital Converter (ADC)

The Variable Gain amplifier augments the signal from the bandpass filter and routes the signal to the Analog to Digital Converter (ADC). The output of the ADC is sent to the digital ASIC.

ASIC

The digital ASIC works as an interface between the DSP and the main processing CPU. In addition, the digital ASIC acts as an interface to the ADC and contains all frequency generators for the ADC clock, the sampling frequency, and the modulation frequency and the necessary glue logic.

Digital Signal Processor (DSP)

The Digital Signal Processor (DSP) communicates via the digital ASIC with the ADC and main processing CPU. It demodulates and filters the incoming ADC signals and transmits the output signals to the main processing CPU.

Main Processing CPU

The Main Processing CPU performs the processing for the SpO2 signals. It communicates via the digital ASIC with the DSP and contains the front end controlling firmware for the LED driver circuit, the RCode measurement circuit, the variable gain stage, the clipping detection, the power supply, and the self-test circuit. The main processing CPU also provides a communication interface to the transmitter controller.

LED Driver

The LED Driver circuit generates the LED current using two transistor current sources receiving a constant voltage input from the power supply. A bridge consisting of four transistors allows the LED current to be switched alternatively for individually driving the red and infrared LEDs of the sensor. To enable the different driving times of the LEDs, the main processing CPU controls the transistors in the bridge.

Introducing the Philips Telemetry System

1-13

Transmitter

Self-Test Circuit

The Self-Test Circuit performs a self-test of the SpO2 measurement device before patient signal processing begins. The Main Processing CPU produces a pulse-width modulated signal which is analog low pass filtered to a sine wave and converted to a photo current signal. During self-test, the connections of the photoamplifier to the photodiode of the sensor are interrupted by switches and the self-test signal is fed into the input of the Photo Amplifier.

RCode Measurement Circuit

The RCode Measurement Circuit identifies which sensor is being used by measuring coding resistors. The Main Processing CPU reads the measurement through a reference resistor and an amplifier stage.

Battery Extender The Battery Extender consists of a cradle, which is fitted over the battery

compartment of the transmitter, and a cable connecting to a wall-mounted dc power module.

When the battery Extender is in use, the transmitter is being powered by the wall mounted dc power module. If the cradle is disconnected, the power will immediately power the transmitter and the electrical unit ceases to power the transmitter.

Note The purpose of the Battery Extender is to conserve battery life.

The Extender does not recharge the battery.

1-14 Introducing the Philips Tele me try Sys tem

Receiver Mainframe

The Receiver Mainframe provides the physical interface between the receiver module and the central monitoring station via the Serial Distribution Network (SDN). The receiver mainframe houses up to 8 receiver modules, each one frequency-matched to a transmitter.

A BNC connector on the mainframe is used to connect to the antenna system output. The BNC connector is connected to the antenna distribution board, which distributes the combined RF signal to each receiver module. The receiver modules receive incoming RF signals via a semi-rigid RF cable connected to the antenna distribution assembly. The receiver modules plug into the receiver backplane, which provides an interface to the internal power supply and the digital backplane. The digital backplane provides interface to the digital cardcage, which houses the signal processing and distribution circuits.

For a standard ECG channel, the receiver mainframe calculates the heart rate from the user-selected primary ECG lead and sends the result, with the ECG wave information and any alarms, INOPS, and status information, over the SDN. The mainframe also provides lead reconstruction, gain adjustment, and filtering.

For an EASI channel, the receiver mainframe reconstructs Lead II information from the three directly acquired or “raw” EASI lead outputs sent by the transmitter (AI, AS, ES) and sends this information out on the SDN for overview purposes. The mainframe also sends the 3 “raw” EASI leads to the Philips Information Center (PIC) over the SDN.

The Philips Information Center (PIC) reconstructs the 12-lead EASI ECG lead information and performs all ECG analyses and alarms. The PIC detects arrhythmia and ST inoperative conditions and generates messages. The mainframe sources all other INOPs detected by the telemetry system (Leads Off, battery, SpO

The processing and distribution circuits of the receiver mainframe consist of the following components:

• Rack Interface

• Utility CPU

• 40 MHz configurable processor card (CPC)

• SDN Board

In addition to the 8 receiver module malfunction LEDs, the receiver mainframe has a separate mainframe malfunction LED. The mainframe malfunction LED is visible through a hole in the front dress cover and illuminates to indicate a malfunction has occurred within the mainframe.

Cooling for the internal assemblies of the receiver mainframe is provided by a dc fan. The fan operates on 12V dc from the power supply via the receiver backplane.

equipment malfunctions, etc.) on the SDN.

Introducing the Philips Telemetry System

1-15

Receiver Mainframe

FE Link

Fan

Antennas Distribution Board

Rack

Interface

1 - 8 Splitter

RRR R2R

Receiver Back Plane

Digital Backplane

Analog Output

(optional)

Utility

CPU

SDN

Interface

RF Amplifier

Malfuction LEDs

1876R5R4R3

CPC

Card

1 Mainframe

8 Receiver Modules

+12Vdc 5Vdc

Power

Supply

RF from Antenna System

Incoming Line Voltage

Figure 1-4 Block Diagram of Philips Receiver Mainframe

Power Supply The Power Supply is an auto switching power supply with the following

specifications:

Input Voltage: 100 - 240 Vac Input Frequency: 47 to 63 Hz. Power consumption (for M2604A with 8 M2603A receiver modules:

110 VA max, 95 VA average 81 W max, 72 W average

Radiated Immunity: 3 Volts/meter outside of operating receiver bands

The power supply generates two logic signals:

• SR (system reset) at start up

• PF (power fail) during power shut down

Antenna Distribution Assembly

The Antenna Distribution Assembly distributes the RF signal received from the external antenna system to each receiver. The external antenna connection to the receiver mainframe is made through a single BNC connector on the rear panel, through the internal antenna cable, and connected to the Antenna Distribution Assembly. An RF amplifier increases the incoming RF signal. A low loss 1-to-8 splitter follows the amplifier. It distributes the received RF signal to each receiver module.

The Antenna Distribution Assembly also contains a digital section consisting of 8 receiver malfunction LEDs, 1 power-on LED, and a watchdog circuit that drives the mainframe malfunction LED. A logic pulse train from the rack interface resets the watchdog timer. If greater than 600 msecs elapses between receipt of pulse trains, the watchdog timer output illuminates the mainframe malfunction LED.

1-16 Introducing the Philips Tele me try Sys tem

+ 336 hidden pages

Philips M2600 Service manual

Philips Telemetry System

Service and Reference Guide

Notice

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

Copyright Copyright © Philips Medical Systems, 2002

Table of Contents

Overview

Philips Telemetry System Compatibility

Introducing the Philips Telemetry System 1-1

Philips Telemetry System

Transmitter

Antenna System

Frequency Converter A Frequency Converter shifts or “converts” the signal from the antenna

Receiver Mainframe The Receiver Mainframe houses the Receiver Modules and converts the

Analog Output Option An Analog Output Option converts the SDN formatted signal back into an

TeleMon The M2636B TeleMonB is a portable monitor display that can be docked to a

Transmitter

Leadsets The standard ECG system supports two leadset configurations: 3-wire and 5-

SpO2 Transducer When SpO

Front End Assembly

Case Assembly The Case Assembly provides protection to the internal electronics of the

Transmitter Button The Transmitter Button is a membrane switch that toggles a bit in the

Leads Off LEDs A Leads Off Light Emitting Diode (LED) turns on whenever one of the

ECG PCB The ECG Printed Circuit Board (PCB) contains the ECG Front-end

Main PCB The Main PCB contains the main processing and signal transmitting circuits

• Digital Section

ECG PCB Interface The ECG PCB Interface is a gate array that receives the output for each of

Transmitter Button The Transmitter Button on the Case Assembly has a direct connection to

Leads Off LEDs Leads Off LEDs on the Case Assembly indicate when the leads are properly

Serial Infrared Port The transmitter communicates to the TeleMon and Telemetry Configuration

Power Supply Control The transmitter monitors the operation of the power supply and controls its

Memory Section The Memory Section consists of a serial EEPROM, which stores the program

RF Section The RF Section is a programmable frequency synthesized local oscillator

Power Supply The Power Supply provides all of the voltages for use by the transmitter. It

SpO2 Module The SpO

SpO2 Transducer The SpO2 Transducer measurement is based on the phenomenon that

SpO2 Board The SpO

Battery Extender The Battery Extender consists of a cradle, which is fitted over the battery

Receiver Mainframe

Power Supply The Power Supply is an auto switching power supply with the following

Antenna Distribution Assembly