Philips M1310 Service Manual

Series 50 T (M1310A) Fetal Telemetry System

SERVICE GUIDE

M1310-9000B Printed in Germany February 2002 Edition 1, A.00.01

Notice

Philips makes no warranty of any kind with regar d to this material , including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Philips shall not be liable for errors contained herein or for incidental or con sequential damages in connection with the fu rnishing, performance o r use of this material.

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

Philips assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Philips.

Responsibility of the Manufacturer

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

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

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

• the instrument is used in accordance with the Instructions for Use or User’s Guide.

Important

United States federal law restricts this device to sale by or on the order of a physician.

This device is not intended for home use.

Warning Failure on the part of the responsible individual hospital or institution

employing the use of this equipment to implement a satisfactory maintenance schedule may cause und ue equipment failure and possible health hazards.

Printing History

M1310-9000A April 1994 M1310-9000B February 2002

About this Manual

The manual is intended for personnel involved in the service and repair of the M1310 Telemetry System.It enables you to diagnose and repair problems with the minimum of inconvenience to the customer.

The philosophy for on-site diagnosis and repair of the M1310A Telemetry System can be summarized as follows:

• General Repair Strategy

The recommended repair method is replacement of assemblies. Every 12 months, you must carry out a series of preventive maintenance tasks and

performance assurance tests. Details can be found in Chapter 10, “Preventive Maintenance, Care and Cleaning”.

• On-site repair for standard assemblies.

• Bench repair for RF-repair.

For an overview of the system, and how to set it up, please re fer to the Instructions for Use.

Conventional current technical terms are used throughout the manual, and familiarity with these terms is assumed.

The following conventions for cautions and warnings are used in this guide:

Note—A note calls attention to an important point in the text.

Warning A warning calls attention to a condition or possible situation that could cause

injury to the user and/or patient.

Caution A caution calls attention to a condition or possible situation that could damage or destroy the product or the user’s work.

 2002 Philips Medizinsysteme GmbH

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright holder.

Contents

1.Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Safety Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Patient Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Protective Earth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Maximum Input/Output Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Telemetry System (Receiver and Transmitter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Channels and Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Input Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Output Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Image Rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Self-Test Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Transducers and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

External Blue Toco Transducers (M1355A) or (M1355A Opt. C03). . . . . . . . . . . . . . . . . . . . . . . 8

Blue Ultrasound Transducer (M1356A) or (M1356 Opt. C03) . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DECG Transducer (M1357A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

DECG/MECG Patient Module (M1364A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

IUP Quartz Transducer (1290C #J05) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

IUP Pressure Transducer (CPJ840J5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Remote Event Marker (15249A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.Tests and Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Testing the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Testing the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Testing the Parameter Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Series 50 Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8040A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8041A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Solving General Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

No LEDs Lit on Receiver (continued overleaf) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Not all Receiver LEDs are Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Yellow LED Remains Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Transmission INOP Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Contents v

Transmission Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Transducer Mode Not Detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Cardio Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

TOCO Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

FMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

FMP Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Event Marker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Nurse Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.Interfacing to a Fetal Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

6.Using the Service Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Running the Service Software Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Using the Service Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.Replacing Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Service Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Lists of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Dismantling the Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Transmitter Processor Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Transmitter VCXO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Dismantling the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Power Supply Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Processor Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

RF Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Receiver VCXO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

RF Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Display Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

8.RF Bench Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

What You Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Transmitter VCXO Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Receiver Preamplifier Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Receiver Assembly Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Receiver VCXO Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

9.Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

vi Contents

Transmitter Functional Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

US Gating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

US Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

US Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

ECG Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

ECG Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Dynamic Compression Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

FMP Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Toco Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Toco Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Toco A/D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

FSK Generator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Service Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Japan ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

VCXO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Receiver Functional Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Input Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

RF Preamp M1406A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

RF Receiver M1402A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

US Bandpass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

ECG Bandpass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

FSK Bandpass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

FSK Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Toco D/A Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Service Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

10.Preventive Maintenance, Care and Cleaning. . . . . . . . . . . . . . . . . . . . . . . .77

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Mechanical Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Safety Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Performance Assurance Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Care and Cleaning of the Telemetry System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

11.Channels and Frequencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

VCXO Operation Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 9

Austria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Australia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Belgium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Denmark. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Eastern European Countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Finland. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Contents vii

France . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Germany . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Italy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Luxembourg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Netherlands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

New Zealand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Norway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Service USA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Singapore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Spain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Switzerland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

UK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

USA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

viii Contents

List of Figures

Figure 1 Troubleshooting: No LED’s Lit on Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Figure 1 Troubleshooting: No LED’s Lit on Receiver (continued from previous page). . . . . . .20

Figure 2 Troubleshooting Receiver LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Figure 3 Troubleshooting: Yellow LED stays on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Figure 4 Troubleshooting: Transmission INOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 5 Troubleshooting: Transmission Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Figure 6 Troubleshooting: Transducer not detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Figure 7 Troubleshooting: Cardio Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Figure 8 Troubleshooting: TOCO Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Figure 9 Troubleshooting: FMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Figure 10 FMP Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 11 Troubleshooting: Nurse Call. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Figure 12 Cable assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Figure 13 Transmitter Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Figure 14 Receiver Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Figure 15 Receiver Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Figure 16 Transmitter VCXO Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 0

Figure 17 FSK Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Figure 18 RF Output Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Figure 19 RF Modulation Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Figure 20 Receiver Preamplifier Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Figure 21 Receiver Assembly Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Figure 22 Receiver VCXO Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

List of Figures ix

x List of Figures

Safety Symbols

Safety

Read this information before setting up, using or servicing your Series 50 T Telemetry System.

FCC WARNING This equipment generates, uses and radiates radio-frequency energy, and

if it is not installed and used in accordance with this manual, may cause interference to radio communications.

Operation of this equipment in a residential area may cause interference, in which case the users, at their own expense, must take whatever measures may be required to correct the interference.

This symbol indicates that you should consult the Ins tructions For Use, and particularly any warning messages.

Equipotential Terminal

This symbol identifies terminals which are connected together, bringing various equipment or parts of a system to the same potential. This is not necessarily earth potential. The value of potentials of earth may be indicated adjacent to the symbol.

Prot ective Earth Terminal

This symbol identifies the terminal for connection to an external protective earth system.

Battery

This symbol identifies the transmitter battery holder. It takes three 1.5 V batteries (AA size, LR6 type).

Three types of battery can be used in the transmitter:

• Alkaline

• NiCd (rechargeable)

• NiMH (rechargeable).

Caution Remove the batteries if you do not intend to use the Transmitter for a long period of time, to avoid damage from leakage.

[9

Chapter 1 - Safety 

Patient Safety

Environment

The Telemetry System should only be used by, or under the direct supervision of, a licensed physician or other health care parctitioner who is trained in the use of fetal heart rate monitors and in th e interpretation of fetal heart rate traces. US federal law restricts this device to sale by, or on the order of, a physician.

The Telemetry Receiver is a Protection Class 1, Type B instrument. It is designed to fulfill safety requirements according to IEC 60601-1, UL 544 and CSA-

C22.2 No.601.1-M90. The telemetry transmitter is a battery operated device, applied parts (patient

connectors) are Type CF .

Use the system in an environment which is reasonably free from vibration, dust, corrosive or explosive ga ses, extremes o f temperatur e and humidity. It operates within specifications at ambient temperatures between 0 and +45°C. Ambient temperatures that exceed these limits can affect the accuracy of the system, the transmitter radio frequency transmission, and can damage the components and circuits.

The system (not including transducers

) can be stored at ambient temperatures

between -40°C and +75°C. The blue Toco and Ultrasound transducers are water-tight to a depth of 50 cm (19.7

inches).

Warning Do not use brown transducers to monitor patients under water. Ultrasound and

Toco transducers that are colored blue are watertight and comply with IEC 529 (IP68).

You can immerse the BLUE Ultrasound and Toco tranducers in water ONLY when connected to the telemetry transmitter. NEVER connect blue transducers directly to the fetal monitor when they are immersed in water, or likely to come in contact with water.

NEVER immerse the telemetry transmitter in water or other liquids such as cleaning solutions.

1. Transducers can be stored at temperatures between -40°C and +60°C (-40°F to +140°F).

 Chapter 1 - Safety

Protective Earth

To protect hospital personnel and the patient, the cabinet must be grounded. Accordingly, the receiver is equipped with a 3-wire power cable which grounds it to the power line ground when plugged into an appropriate 3-wire receptacle. Do not use a 3-wire to 2-wire a dapter with the receiver. Any interruption of the protective earth grounding will cause a potential shock hazard that could result in serious personal injury.

Whenever it is likely that the protection has been impair ed, the receiver must be made inoperative and be secured against any unintended operation.

Warning Check each time before use that the Telemetry System is in perfect working

order and the receiver is properly grounded.

The patient cable must be positioned so that it does not come into contact with any other electrical equipment.

Before operation, make sure that the receiver is free from condensation. This can form when equipment is moved from one building to another, and is exposed to moisture and differences in temperature.

Warning Possible explosion hazard if used in the presence of flammable anesthetics.

Chapter 1 - Safety



Maximum Input/Output Voltages

Receiver (Rear View)

1. Service Socket Maximum voltage of ±12V.

2. Socket to Fetal Monitor Maximum voltage of ±12V.

3. Power Input Socket 100-120V ~ or 220-240V ~

4. Event Marker/Service Socket Maximum Voltage of +5V.

5. Toco Socket Maximum Voltage of +5V.

6. Cardio Socket Maximum Voltage of +5V.

Transmitter

 Chapter 1 - Safety

Telemetry System (Receiver and Transmitter)

Power Requirements

The Telemetry System is set for the correct voltage at the factory, but before you connect power, ensure that the voltage swit ch is in the correct positi on for your country.

Operating Voltage : 100V - 120V~ or 220V - 240V (±10%). Line Frequency: 50 to 60Hz. Power Consumption: 19VA max. Battery Type: 3 x 1.5V (AA size).

Environment

The Telemetry System should be used in an environment which is reasonably free from vibration, dust, corrosive or explosive gases, extremes of temperature and humidity. It operates within specifications at ambient temperatures between 0 and 45°C . Ambient temperatures which exceed these limits can affect the accuracy of the Telemetry System, the Transmitter radio frequency transmission, and cause damage to the components and circuits.



Technical Specifications

Dimensions and Weight

Receiver Height: 50mm (2in).

Transmitter Height: 122mm (4.8 in).

Operating Te mp: 0 to +45°C (32°F to 113°F).

Storage Temp Relative Humidity: 5 to 95%.

Width: 425mm (16.7in). Depth: 392mm (15.4in). Weight: 6.5kg (14.3 lb).

Width: 85mm (3.3in). Depth: 40mm (1.6in). Weight: 200g (8 oz).

(without transducers and batteries).

: -40 to +75°C (-40°F to 167°F).

1. Excludes transducers. T ransducers can be stored at temperatures between -40 °C and +60°C (-40°F to +140°F).

Chapter 2 - Technical Spec ifications 

Telemetry System (Receiver and Transmitter)

Controls and Indicators

Power On/Off Switch Push Button Pow e r On Light LED Green Nurse Call Acknowledge/Volume Button Push Button Nurse Call Light LED Yellow Transmission INOP Light LED Yellow Battery Low Light LED Yellow Error Light LED Red

Receiver - Controls and Indicators

Description Type Color

Power On/Off Switch Slide Switch Pow e r On Light LED Green Nurse Call Push Butt on Error Light LED Red

Channels and Frequencies

Over 160 different channels in the UHF Band (430- 470 MHz) with 25 kHz/

12.5 kHz channel spacing avail able. (S ee Ch apter11 for a list of the channels and frequencies available.)

Antenna Receiver

BNC Female input connector (standard 50 Ohms input). For standalone or connection to an antenna system.

Transmitter

Built-in Antenn a in US and DECG transducer cables.

Transmitter - Controls and Indicators

Description Type Color

Inputs Receiver

• Equipotential Grounding Point.

• Service Socket.

 Chapter 2 - Technical Specifications

Transmitter

• Cardio socket for M1356A ultrasound transducer or the M1357A/ M1364A DECG transducer.

• Toco socket for the M1355A Toco transducer or an IUP Transducer (CPJ840J5).

• Remote Event Marker and Service Socket.

Outputs Receiver

• 25 pin RS232 Socket for connecting the Fetal Monitor.

Input Sensitivity -118dBM Output Power Transmitter

4 mW (USA) 2 mW (Europe) 1 mW (Japan)

Telemetry System (Receiver and Transmitter)

Image Rejection >80 dB Self-Test Facilities Self-test facilities include:

• Receiver Self Test: Tests the Receiver LF Part.

• Transmitter Self Test: Tests the Transmitter LF Part.

• Parameter Test: With the appropriate transducer connected to the

Transmitter, the monitoring mode (ultra sound/ DECG or Toco/IUP) is tested from the Transmitter via Receiver to the connected Fetal Monitor.

Chapter 2 - Technical Spec ifications



Transducers and Cables

There are two types of Toco, Ultrasound and DECG Transducers, the Standard Series 50 and Telemetry Transducers. The Standard Transducers have a 2.5m/8ft 2in ventilated cable and the Telemetry Transducers have a 70cm/28in ventilated cable.

Both types of Toco and Ultrasound Transducers are colored blue and are watertight complying with IEC 529 (IP68)

External Blue Toco Transducers (M1355A) or (M1355A Opt. C03)

System: Passive Straingauge. Dynamic Range: 0 to 12N (overlo ad protected). Weight: 180g (6.3oz). Cable Length: 2.5m (8ft 2in) or 70cm (28in) for Option C03. Water-tight: To a depth of 0.5 meters.

Blue Ultrasound Transducer (M1356A) or (M1356 Opt. C03)

System: Pulsed Dopple r. Oscillator Frequency: 998.4kHz. Weight: 185g (6.5oz). Cable Length: 2.5m (8ft 2in) or 70cm (28in) for Option C03. Size: 75mm (2.95in) diameter. Water-tight: To a depth of 0.5 meters.

Warning Under no circumstances should the transducer be immersed in water

when connected to the Fetal Monitor.

Caution Blue Toco Transducers have a ventilated cable. As liquid can enter this

cable through capillary action, extra care should be taken not to get the connector wet.

 Chapter 2 - Technical Specifications

DECG Transducer (M1357A)

Input Impedance: >10M (di_erential, dc to 50/60Hz). CMRR: >110dB (with patient cable, 51.5k/0.047_F

Noise: <4_Vp (referred to input with 25k). Contact Potential Tolerance:_500mV. Input Voltage Range: 20_Vp to 3mVp. Patient Leakage Current: <10_Arms @ 120V/60Hz. Patient Auxiliary Current: <0.1_A (dc). Dielectric Strength : 2000Vrms (spark-gap protected). Weight: 185g (6.5oz). Cable Length: 2.5m (8ft 2in) or 70cm (28in) for Option C03.

DECG/MECG Patient Module (M1364A)

The patient module has a7-pin ECG connector into which you can plug either DECG cable (M1362A or M1362B) or MECG cable.

IUP Quartz Transducer (1290C #J05)

imbalance atline frequency).

Overall length: 2706mm (+30, -100mm) Length of free cable: 2618mm (+30, -100mm) Weight: 120 grams Size: 88x42x30mm Socket: DECG or MECG connection

A short cable version of the M1364A patient module with a 70 cm (28 inch) cable is orderable as part number M1364-60003.

IUP Quartz Transducer (1290C #J05)

Dynamic Range: -50 to 300mmHg. Sensitivity: 5_V/V/mmHg. Non-linearity: whichever is greater:

Volume Displacement: 0.2mm3/100mmHg. Weight: 180g (6.3oz). Cable Length: 3m (9ft 10in). Length: 37mm (1.5in).

±1% of the reading OR ±1mmHg.

Height: 21.7mm (0.9in). Operating Te mp: 15 to 40_C.

Chapter 2 - Technical Spec ifications



IUP Quartz Transducer (1290C #J05)

IUP Pressure Transducer (CPJ840J5)

Pressure range: -20 to + 300 mm Hg Max. overpressure: 10,000 mm Hg Sensitivity: 50 Resonance frequency: 300 Hz typical (transducer and dome) Max. electrical excitation: 15 V DC or AC Bridge resistance: 1000 Ohms (input and output) Non-linearity and hysteresis: max. 0.5% of full scale Zero balance : max. 0.15 mm Hg/°C Operating temperature range:+10 to +50°C Storage temperature range: -20 to +70°C Isolation resistance: min. 1000 MOhms Leakage current: max.1.5 Weight: 24 grams (without cable) Connector: Equipment specified

Remote Event Marker (15249A)

Length: 2.8m (9ft 2in). Weight: 75g (2.65oz).

µV/V/mm Hg

µA at 250V, 50 Hz

 Chapter 2 - Technical Specifications

Testing the Receiver



Tests and Error Messages

To ru n the receiver self test:

1. Switch on the fetal monitor and its recorder.

2. Press the Power O n /Off button to switch the re ceiver on.

3. When you switch on:

• The receiver On light (A) comes on.

• The nurse call light (B) and the battery low light (D) are lit for one

second.

• The transmission INOP light (C) lights and stays lit until the transmitter is switched on.

• The telemetry lamp indicator on the fetal monitor lights, in dicating telemetry monitoring mode.

•

TELE is annotated on the fetal trace.

Chapter 3 - Tests and Error Messages 

Testing the Transmitt er

Testing the Transmitter

1. Slide back the battery cover.

2. Switch on the transmitter. The green On/Off light (A) comes on showing the transmitter is on.

3. Check the red light (B) situated behind the middle batt ery. If:

• the red light is lit for a few seconds and th en goes out, the self test is

successfully complete.

• the red light blinks, or remains on after three seconds, change the

batteries. If the fault continues, there is a hardware error. See troubleshooting flowcharts in Chapter4.

 Chapter 3 - Tests and Error Messages

Testing the Parameter Signals

The parameter test ch ecks th e signal path to and f rom the tr ansducer so cket s, but not the transducers themselves.

1. Switch on the monitor, the recorder and the telemetry receiver.

2. Connect the appropriate transducer to each socket on the transmitter.

3. Standing within view of the monitor, press the Nurse Call Button on the transmitter and switch on th e transmitter simul taneously. The test runs while the Nurse Call is pressed.

Testing the Parameter Signals

Signal Correct Monitor Response

125 is displa yed and printed.

Signal Quality Indicator is green. Fetal heartbeat is heard from the loudspeaker.

Toco A triangle signal with an amplitude of

40 units is

displayed and printed. Each cycle lasts for 12 seconds.

DECG

150 is displa yed and printed

Signal Quality Indicator is green. Fetal heartbeat is heard from the loudspeaker.

If the response is different, see troubleshooting flowcharts, Chapter 4.

Chapter 3 - Tests and Error Messages



Error Messages

The following error messages are directly related to telemetry and appear on the fetal monitor. Refer to the Instructions for U se prov ided with your mo nitor for error messages not related to teleme try monitoring.

Series 50 Family

Message Display Cause Solution

Err 9 US Toco Invalid telemetry mode. Check the cable from the telemetry

receiver and, if necessary, replace it.

Err 14 US Toco Incorrect transducer

connected to transmit ter.

Check that the transducer is compatible with Series 50T Fetal Telemetry System.

Err 16 US Toco Transducers are

connected to the front panel of the monitor.

8040A

Disconnect the transducers from the monitor or switch off the telemetry receiver.

Message Display Cause Solution

Err 16 US Toco Transducers are

connected to the front

Disconnect th e transducer s from the mo nitor or switch off the telemetry receiver.

panel of the monitor.

*. No longer available.

 Chapter 3 - Tests and Error Messages

Error Messages

8041A

Message Display Cause Solution

Signal indicator

Indicator Panel

Invalid telemetry mode.

Check the cable from the telemetry receiver and,

if necessary, replace it. lamps flashing

Incorrect transducer connected into

Check that the transducer is compatible with

Series 50T Fetal Telemetry System.

transmitter. (Only Ultrasound and Toco transducers can be used).

Transducers are connected to the front

Disconnect th e transducer s from the mo nitor or

switch off the telemetry receiver.

panel of the monitor.

*. No longer available

Chapter 3 - Tests and Error Messages



Error Messages

 Chapter 3 - Tests and Error Messages

Solving General Problems

Troubleshooting is based on the interpretation of the Receiver LED’s. This chapter describes common problems and their causes, and provides troubleshooting flowcharts and guidance for their solution.

Problem Possible Causes Solutions

Troubleshooting

All the lights on the receiver stay on when the receiver is turned on.

The Telemetry Indicator Lamp on the fetal monito r does not light when th e monitor and the receiver are switched on.

Receiver Power On Light does not light when the receiver is switched on.

Transmission INOP light on the receiver is still lit when the transmitter is switched on.

Battery Low Light lit on receiver.

Fetal monitor is switched off. Possible defect in the receiver, interface

cable or fetal monitor. Incorrect interface connection between

the monitor and the receiver.

Faulty interface c able.

Po wer cable not p lugged into th e power supply.

Fuses need replacing.

Receiver and transmitter do not have the same channel or serial number.

Batteries in the transmitter are exhausted.

Power in batteries is low. Change batteries.

Switch on fetal monitor. Carry out the tests described in “Testing the

Receiver” on page 11. Follow the in structions in Instructions for Use for

details on how to connect the monitor to the receiver.

Replace interface cable.

Plug in and switch on.

Replace fuses.

Check channel number and the serial numbers are the same on the receiver and the transmitter.

Change the batteries in the transmitter (refer to the Instructions for Use for details.)

INOP transmission lamp is lit after the patient has moved a short distance away form the receiver .

Local Antenna:

Antenna not connected correctly.

Remote Antenna System:

Antenna cable not connected correctly to receiver.

Check antenna is connecting correctly. Test the antenna system by bringing the

transmitter close to the receiver. If the transmission is good , then the antenn a system is not functioning properly.

Chapter 4 - Troubleshooting 

Solving General Problems

Battery Details 3 x 1.5V Size: AA Type: LR6

Alkaline (1.8 Ah) 180 min 40 hrs 100 min 16 hrs 80 min 14.5 hrs

Typical Battery Operating Times at Room Temperature

US + TOCO DECG + TOCO DECG + IUP

After Low LIght

Comes On

Operating

Time

After Low Light

Comes On

Operating

Time

After Low Light

Comes On

Operating

Time

NiCd (0.6 Ah) Rechargeable

NiMH (1.2 Ah) Rechargeable

10 min 12 hrs 6 min 5.5 hrs 5 min 4.5 hrs

20 min 22 hrs 12 min 11 hrs 10 min 9 hrs

 Chapter 4 - Troubleshooting

No LEDs Lit on Receiver (continued overleaf)

Solving General Problems

Figure 1 Troubleshooting: No LED’s Lit on Receiver

Chapter 4 - Troubleshooting



Solving General Problems

Figure 1 Troubleshooting: No LED’s Lit on Receiver (continued from

previous page)

 Chapter 4 - Troubleshooting

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