GE Medical Systems Corometrics 340 User manual

CorometricsModel 340
SERVICE MANUAL MANUAL P/N 2006920-001 REV. A
IUPTOCO
+
~
XXX
340 Telemetry Receiver
REFER TO MANUAL FOR PROPER TRANSDUCERS
ULTRASOUND ECG UA
XXX
340 Telemetry Transmitter

CorometricsModel 340
SERVICE MANUAL MANUAL P/N 2006920-001 REV. A
IUPTOCO
+
~
XXX
340 Telemetry Receiver
REFER TO MANUAL FOR PROPER TRANSDUCERS
ULTRASOUND ECG UA
XXX
340 Telemetry Transmitter

Corometrics and Marquette are registered trademarks of GE Medical Systems Information Technologies. GE is a registered
trademark of General Electric Company. All other product and brand names are trademarks or registered trademarks of their
respective companies. ©2001 GE Medical Systems Information Technologies. All rights reserved. No part of this manual
may be reproduced without the permission of GE Medical Systems Information Technologies.
GUARANTEE
All equipment sold by GE Medical Systems Information Technologies, is fully guaranteed as to
materials and workmanship for a period of 1 year. Information Technologies reserves the right to
perform guarantee service operations in its own factory, at an authorized repair station, or in the
customer’s installation.
Our obligation under this guarantee is limited to repairing, or, at our option, replacing any
defective parts of our equipment, except fuses or batteries, without charge, if such defects occur in
normal service.
Claims for damage in shipment should be filed promptly with the transportation company. All
correspondence covering the instrument should specify the model and serial numbers.
GE MEDICAL SYSTEMS Information Technologies
A GE Medical Systems Company
Revision A: 04-01
GE Medical Systems Information Technologies will make available on request such circuit
diagrams, component diagrams, component parts lists, descriptions, calibration instructions, or
other information which will assist the users or appropriately qualified technical personnel to
repair those parts of the equipment which are classified by Information Technologies as
repairable. Refer to the service manual for further information.
CAUTION: In the United States of America, Federal Law restricts this device to sale by or
on the order of a physician.
!
World Headquarters
8200 West Tower Avenue
Milwaukee, WI 53223 USA
Tel: [phone]
800.558.5120 (US only)
Fax: [phone]
Internet: www.gemedicalsystems.com
Europe / Middle East / Africa
Postfach 60 02 65
D-79032 Freiburg Germany
Tel: [phone]
Fax: [phone]
Asia
11th Floor, The Lee Gardens
33 Hysan Avenue
Causeway Bay Hong Kong
Tel: [phone]
Fax: [phone]

Revision A Model 340 Telemetry System i
2006920-001
Contents
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Preface Overview of Telemetry Systems . . . . . . . . . . . . . . . . . . . . ix
About Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Model 340 Original Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
Model 340 Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
Model 340M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .x
Identifying Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Identifying Model 340 Original Release and Model 340 Plus Telemetry Systems . . xi
Identifying a Model 340M Telemetry System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
1Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
General Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Responsibility of the Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 1-3
Equipment Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
FCC Rules Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
FCC RF Exposure Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
FCC Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Wireless Medical Telemetry Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

ii Model 340 Telemetry System Revision A
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2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Product Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
3Controls, Indicators, and Connectors . . . . . . . . . . . . . . . 3-1
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Receiver Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Receiver Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Transmitter Bottom Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Transmitter Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Transmitter Rear Panel Battery Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
4Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Transmitter Board (No. 2003708-001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 4-2
Ultrasound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
UA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
ECG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Telemetry Receiver Board Circuitry (No. 13856A) . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
The RF Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Receiver Encoded Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
TOCO Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
ECG Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
Ultrasound Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Power Supply Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
Telemetry Transmitter Carrier Board (2003713-001) . . . . . . . . . . . . . . . . . . . . . . 4-11
Telemetry Receiver Carrier Board (2004163-001) . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Revision A Model 340 Telemetry System iii
2006920-001
5Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
FCC Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Receiver Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Accessing the Receiver Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Ultrasound Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
TOCO Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
ECG Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Mode Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
RF Carrier Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .5-9
Mode Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
Pulsed Doppler Ultrasound Audio Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
Ultrasound Modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Transmitter Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
UA Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
ECG Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
Main Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
6Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
General Cleaning Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Cleaning the Transmitter and Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
7Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Problem Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
8Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
9Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

iv Model 340 Telemetry System Revision A
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For your notes

Revision A Model 340 Telemetry System v
2006920-001
Figures
Figure 1-1.
Model 340 or Model 340 Plus REF Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi
Figure 1-2.
Model 340M REF Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
Figure 3-1.
Receiver Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Figure 3-2.
Receiver Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Figure 3-3.
Transmitter Bottom Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Figure 3-4.
Transmitter Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Figure 3-5.
Transmitter Rear Panel Battery Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..3-10
Figure 5-1.
Summary of Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

For your notes

Revision A Model 340 Telemetry System vii
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Tables
Table 1-1.
Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Table 1-2.
Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Table 1-3.
FCC Rules Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Table 2-1.
Summary of Monitor Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Table 3-1.
Receiver Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Table 3-2.
Receiver Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Table 3-3.
Transmitter Bottom Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Table 3-4.
Transmitter Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Table 5-1.
Power Supply Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
Table 5-2.
Band-Pass Filter Center Frequencies and –3 dB Points . . . . . . . . . . . . . . . . . . . . . . .5-8
Table 5-3.
Center Frequencies of Tone Decoders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Table 5-4.
Tone Decoder Output Locks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
Table 5-5.
Open Collector Transistor Switch Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
Table 7-1.
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

For your notes

Revision A Model 340 Telemetry System ix
2006920-001
Preface
Overview of Telemetry
Systems 1
This chapter provides an overview of the 340 Series of telemetry systems:
About Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
Identifying Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

x Model 340 Telemetry System Revision A
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Overview of Telemetry Systems: About Your System
About Your System
Due to continuing product innovations, there are three versions of the
Model 340 Telemetry System in hospitals today. All three versions
operate identically from a user’s perspective. Unless otherwise indicated,
the information in this manual applies to all three devices.
Model 340 Original Release
The first release of the Model 340 Telemetry System operates in the
frequency range 430–470 MHz.
Model 340 Plus
The Model 340 Plus also operates in the frequency range 430–470 MHz
offering additional channel numbers than the original Model 340. In
addition, the Model 340 Plus offers flexibility by allowing factory re-
programming to an alternative channel number should interference
become a factor in your location.
Model 340M
The Model 340M operates in the frequency range 608–614 MHz where
the “M”indicates “medical”. The Model 340M complies with the Federal
Communications Commission (FCC) rules for Wireless Medical
Telemetry Service (WMTS). In June 2000, the FCC allocated a new
spectrum allowing potentially life-critical equipment to operate on an
interference-protected basis. Refer to “Wireless Medical Telemetry
Service”on page 1-10 in this manual for additional information.

Revision A Model 340 Telemetry System xi
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Overview of Telemetry Systems: Identifying Your System
Identifying Your System
Each GE Medical Systems Information Technologies device has a unique
serial number tag for identification. For each Model 340 Telemetry
System, a reference number can be used to determine if the unit is a
Model 340 Original Release, Model 340 Plus, or Model 340M. If your
device’s REF number begins with “0”, refer to “Identifying Model 340
Original Release and Model 340 Plus Telemetry Systems”next on this
page. If your device’s REF number begins with “3”, refer to “Identifying a
Model 340M Telemetry System”on the following page.
Identifying Model 340 Original Release and
Model 340 Plus Telemetry Systems
If your device’s REF number beings with “0”:
u the fourth character identifies receiver or transmitter
u the fifth character identifies Model 340 Original Release or
Model 340 Plus
Refer to Figure 1-1.
Figure 1-1. Model 340 or Model 340 Plus REF Number
Example 1: If a serial number label shows REF 0341AAN-501, it is a
receiver from a Model 340 Original Release system.
Example 2: If a serial number label shows REF 0342BBN-XXX00B, it is a
transmitter from a Model 340 Plus system.
0 3 4 _ _ _ _ - _ _ _ _ _ _
Product Code Catalog Number Other Dev ce Character st cs
1 = Telemetry Receiver
2 = Telemetry Transmitter
Vers on
A = Model 340 Or g nal Release
B = Model 340 Plus
Language/Voltage
Speci iers Three to six characters that
urther describe the unit.

xii Model 340 Telemetry System Revision A
2006920-001
Identifying a Model 340M Telemetry System
If your device’s REF number beings with “3”:
u the third character identifies receiver or transmitter
u the fourth character identifies Model 340M
Refer to Figure 1-2.
Figure 1-2. Model 340M REF Number
Example 1: If a serial number label shows REF 341MCCN-XXX00A, it is
a receiver from a Model 340M telemetry system.
Example 2: If a serial number label shows REF 342MBBN-XXX000B, it
is a transmitter from a Model 340M telemetry system.
3 4 _ M _ _ _ - _ _ _ _ _ _
Product Code Catalog Number Other Dev ce Character st cs
1 = Telemetry Receiver
2 = Telemetry Transmitter
Option/Language/Voltage
Speci iers Three to six characters that
urther describe the unit.
M = Model 340 Med cal

Revision A Model 340 Telemetry System 1-1
2006920-001
Chapter 1
Safety 1
The information presented in this section is important for the safety of
both the patient and operator and also serves to enhance equipment
reliability. This chapter describes how the terms Danger, Warning,
Caution, Important, and Note are used throughout the manual. In
addition, standard equipment symbols are defined.
This section includes the following important information:
General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Equipment Safety Information . . . . . . . . . . . . . . . . . . . . . . . 1-4
Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
!

1-2 Model 340 Telemetry System Revision A
2006920-001
Safety: General Information
General Information
General Use
If any equipment is cold to the touch or below ambient temperature,
allow it to stabilize before use.
To ensure patient safety, use only parts and accessories manufactured or
recommended by GE Medical Systems Information Technologies. Parts
and accessories used shall meet the requirements of IEC 601.1.1.
Disposable devices are intended for single use only. They should not be
reused.
Periodically, and whenever the integrity of the equipment is in doubt,
test all functions.
Refer to the “Maternal/Fetal Monitoring Operator’s Manual”for
information concerning the limitations of internal and external fetal
heart rate monitoring techniques.
Responsibility of the Manufacturer
GE Medical Systems Information Technologies (hereinafter Information
Technologies) is responsible for the effects on safety, reliability, and
performance if:
n assembly operations, extensions, readjustments, modifications, or
repairs are carried out by persons authorized by Information
Technoligies;
n the electrical installation of the relevant room complies with the
requirements of appropriate regulations; and
n the equipment is used in accordance with the instructions for use.

Revision A Model 340 Telemetry System 1-3
2006920-001
Safety: Definitions of Terminology
Definitions of Terminology
Six types of special notices are used throughout this manual. They are:
Danger, Warning, Caution, Contraindication, Important, and Note. The
warnings and cautions in this safety section relate to the equipment in
general and apply to all aspects of the equipment. Be sure to read the
other chapters because there areadditional warnings and cautionswhich
relate to specific features of the equipment.
When grouped, warnings and cautions are listed alphabetically and do
not imply any order of importance.
Table 1-1. Definitions of Terminology
Danger A DANGER notice indicates an imminently hazardoussituationwhich,ifnotavoided,willresult
in death or serious injury.
Warning A WARNING indicates a potentially hazardous situationwhich, if not avoided, couldresult in death
or serious injury.
Caution
A CAUTION indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury. Cautions are also used to
avoid damage to equipment.
Contraindication
A CONTRAINDICATION describes any special
symptom or circumstancethat renders theuse ofa
remedy or the carrying out of a procedure
inadvisable, usually because of a risk.
Important An IMPORTANT notice indicates an emphasized note. It is something you should be particularly
aware of; something not readily apparent.
Note A NOTE indicates a particular point of information;
something on which to focus your attention.

1-4 Model 340 Telemetry System Revision A
2006920-001
Safety: Equipment Safety Information
Equipment Safety Information
Warnings
:$51,1*6
ACCIDENTAL SPILLS—In the event that fluids are
accidentally spilled on the equipment, take the
equipment out of operation and inspect for damage.
APPLICATION—This equipment is not designed for
direct cardiac connection.
CONDUCTIVE CONNECTIONS—Avoid making any
conductive connections to applied parts (patient
connection) which are likely to degrade safety.
CONDUCTIVE PARTS—Ensure that the conductive
parts of the lead electrodes and associated connectors do
not contact other conductive parts including earth.
CONNECTIONS—The correct way to connect a patient
to the transmitter is to plug the electrode leads into the
patient cable which in turn connects to the
transmitter. The receiver is connected to the wall
socket by the power cord. Do not plug the electrode
leads into the power cord, a wall socket, or an extension
cord.
DEFIBRILLATION—This equipment is not designed for
use with defibrillators.
ELECTRICAL SHOCK—To reduce the risk of electrical
shock, do not remove equipment covers. Refer servicing
to qualified personnel.
ELECTROMAGNETIC INTERFERENCE—Be aware
that strong electromagnetic fields may interfere with
equipment operation. Interference prevents the clear
reception of signals by the device. If the hospital is close
to a strong transmitter such as TV, AM or FM radio,
police or fire stations, a HAM radio operator, an airport,
or cellular phone, their signals could be picked up as
signals by the equipment. If you feel interference is
affecting the equipment, contact your Service
Representative to check the equipment in your
environment.