Welch Allyn CP-150 ECG User manual

CP 150 12-lead resting
electrocardiograph

Directions for use

© 2013 Welch Allyn, Inc. To support the intended use of the product described in this publication, the purchaser of
the product is permitted to copy this publication, for internal distribution only, from the media provided by Welch
Allyn.

Caution: Federal US law restricts sale of the device identified in this manual to, or on the order of, a licensed
physician.

Welch Allyn assumes no responsibility for any injury, or for any illegal or improper use of the product, that may result
from failure to use this product in accordance with the instructions, cautions, warnings, or indications for use
published in this manual.

Welch Allyn is a registered trademark of Welch Allyn, Inc. CP 150, and CardioPerfect are trademarks of Welch Allyn,
Inc.

Patent information

For patent information, please visit www.welchallyn.com/patents.

PDI and Sani-Cloth are registered trademarks of PDI, Inc. CaviWipes is a trademark of Metrex Research Corporation.

Software in this product is copyright Welch Allyn or its vendors. All rights are reserved. The software is protected by
United States of America copyright laws and international treaty provisions applicable worldwide. Under such laws,
the licensee is entitled to use the copy of the software incorporated within this instrument as intended in the
operation of the product in which it is embedded. The software may not be copied, decompiled, reverse-engineered,
disassembled or otherwise reduced to human-perceivable form. This is not a sale of the software or any copy of the
software; all right, title and ownership of the software remains with Welch Allyn or its vendors.

Welch Allyn Technical Support:

http://www.welchallyn.com/about/company/locations.htm

This manual: DIR 80018094, Ver. D

Welch Allyn
4341 State Street Road

Skaneateles Falls, NY 13153-0220 U.S.A

www.welchallyn.com

Contents

Introduction ............................................................................................. 1

iii

About this document ........................................................................................... 1

Intended use ........................................................................................................ 1

Indications for use ................................................................................................ 1

Contraindications ................................................................................................. 1

Description ........................................................................................................... 2

Features ............................................................................................................... 2

Controls, indicators, and connectors .................................................................... 3

Symbols ............................................................................................................... 5

General warnings ................................................................................................. 7

General cautions .................................................................................................. 9

Setup ...................................................................................................... 11

Connecting the patient cable ............................................................................. 11

Loading the thermal paper ................................................................................. 11

Powering the electrocardiograph ....................................................................... 12

Verifying proper operation .................................................................................. 12

Connecting to a CardioPerfect workstation ....................................................... 13

To connect to a network-connected workstation via Ethernet cable ................. 13

ECG home screen .................................................................................. 15

ECG home screen .............................................................................................. 15

ECG tests ................................................................................................ 19

Attaching the leads to the patient ...................................................................... 19

Electrode locations ............................................................................................. 21

Viewing electrode placement ............................................................................ 22

Performing an Auto ECG test ............................................................................ 22

Saved tests ............................................................................................. 27

Searching for saved tests .................................................................................. 27

Managing the saved tests .................................................................................. 27

Settings .................................................................................................. 29

Viewing or changing the ECG settings .............................................................. 29

Selecting the device information ....................................................................... 30

Maintenance .......................................................................................... 33

Cleaning the equipment ..................................................................................... 33

Inspecting the equipment .................................................................................. 34

Testing the electrocardiograph .......................................................................... 34

Replacing the battery ......................................................................................... 34

iv Contents CP 150 12-lead resting electrocardiograph

Replacing the AC fuses ...................................................................................... 35

Storing the equipment ....................................................................................... 36

Discarding the equipment .................................................................................. 36

Troubleshooting .................................................................................... 37

Lead-quality problems ........................................................................................ 37

System problems ............................................................................................... 39

Limited warranty ................................................................................................ 40

Service policy ..................................................................................................... 41

Specifications ........................................................................................ 43

Introduction

About this document

This document is written for clinical professionals with a working knowledge of medical
procedures and terminology required for monitoring cardiac patients.

Before using the electrocardiograph for clinical applications — or before setting up,
configuring, troubleshooting, or servicing the electrocardiograph — you must read and
understand this document and all other information that accompanies the
electrocardiograph and related options or accessories.

1

Intended use

The Welch Allyn electrocardiography products (subject devices) are intended for use by
trained operators in health facilities. The subject devices provide the following diagnostic
functions:

•

Acquiring, viewing, storing, and printing ECG waveforms using ECG front-end
modules (patient cables) and associated accessories that provide signal acquisition
for up to twelve (12) leads of patient ECG waveforms through surface electrodes
adhered to the body.

• Using optional algorithms to generate measurements, data presentations, graphical
presentations, and interpretative statements on an advisory basis. These are
presented for review and interpretation by the clinician based upon knowledge of the
patient, the result of physical examination, the ECG tracings, and other clinical
findings.

Indications for use

The electrocardiograph is one of the tools that clinicians use to evaluate, diagnose, and
monitor patient cardiac function.

The 12-lead ECG interpretive algorithm provides a computer-generated analysis of
potential patient cardiac abnormalities which must be confirmed by a physician with
other relevant clinical information.

Contraindications

The electrocardiograph has no known contraindications.

2 Introduction CP 150 12-lead resting electrocardiograph

Description

• The electrocardiograph allows users to perform 12-lead ECG measurements and
analysis.

• The electrocardiograph supports STAT, Auto, and Rhythm test types.

• The electrocardiograph provides the ability to print test records on an internal printer
or external network printer.

• The electrocardiograph allows storage of test records in device memory, external
storage media, and external software applications.

Features

Pacemaker detection

The software detects the possible presence of a pacemaker. If you confirm that the
patient has a pacemaker, the ECG report includes no interpretation, and it indicates that
a pacemaker was detected.

Automatic ECG interpretation (optional)

The optional MEANS interpretation algorithm, developed by the University of Rotterdam
in the Netherlands, provides automatic analysis of ECG tests. For more information, see
the MEANS Physicians’ Manual or the PEDMEANS Physicians’ Manual on the CD that
came with your electrocardiograph. The MEANS algorithm is used for adult patients 18
years and older. The PEDMEANS algorithm is used for pediatric patients from 1 day
through 17 years old.

CAUTION Check for the presence of a pacemaker before using ECG with
interpretation.

Directions for use Introduction 3

Controls, indicators, and connectors

No. Feature Description

1 LCD screen 800 x 480 pixels color touchscreen provides a graphical user

interface.

2 Power switch and LED Power-on/Standby switch.

The LED indicates the charging status when connected to AC
power:

• Green: The battery is charged.

• Amber: The battery is charging.

3 Patient cable connector Provides connection for patient cable.

4 Printer Printer provides a printout of patient Auto ECG, Stat ECG, or

Rhythm ECG.

4 Introduction CP 150 12-lead resting electrocardiograph

Back view

No. Feature Description

1 Ethernet connector Provides a hardwired connection to the computer network.

The LEDs indicate active network status when the ethernet cable
is connected to a network.

2 Clients USB USB, type "mini B." Provides connection to an enabled host.

3 Host USB USB, type "A." Provides four host USB connections for optional

accessories.

4 Power connection Provides an external AC power connection.

5 AC fuse Provides access to AC fuse.

6 Ground lug (equipotential terminal) Provided for electrical safety testing and as a means for

connection of a potential equalization conductor.

7 Battery compartment (behind cover) Houses the Li-ion battery.

Directions for use Introduction 5

Symbols

Documentation symbols

Power symbols

WARNING The warning statements in
this manual identify conditions or
practices that could lead to illness, injury,
or death.

Consult operating instructions.

Power on/standby

(LED off) No AC power is present The battery is absent or faulty

(LED green) AC power is present, and
battery is charged. (LED amber) AC power
is present, and battery is charging.

Caution The caution statements in this
manual identify conditions or practices
that could result in damage to the
equipment or other property, or loss of
data. This definition applies to both
yellow and black and white symbols.

The battery is charged to the indicated
level

Alternating current Battery is charging

Dangerous voltage Battery door

Fuse Rechargeable battery

Protective earth Nonionizing electromagnetic radiation

Equipotential terminal AC input power

6 Introduction CP 150 12-lead resting electrocardiograph

Connectivity symbols

USB Ethernet (RJ-45 )

Shipping, storing, and environment symbols

This end up Keep dry

Fragile Relative humidity limit

Temperature limits Atmospheric air-pressure limits

Separate the battery from other
disposables for recycling

Separate the device from other
disposables for recycling.

See www.welchallyn.com/weee.

Lithium ion battery

Miscellaneous symbols

Manufacturer

Reference/Model number Serial number

Recycle

China RoHS (restriction of hazardous
substances) symbols for control of
pollution caused by electronic
information products. 5-year
environment-friendly use period (EFUP)
for batteries. 10-year EFUP for the device.
For details, see the accompanying
documentation.

Defibrillation-proof Type CF applied parts

Reorder/Catalog number

Batch code

Directions for use Introduction 7

Intertek ETL listed Do not reuse

Electromagnetic compatibility (EMC) information

For information about electromagnetic compatibility (EMC), see the Welch Allyn website.

http://www.welchallyn.com/apps/products/product_category.jsp?catcode=CARDIO

General warnings

Warnings indicate conditions or practices that could lead to illness, injury, or death.

Warnings related to the environment

WARNING The power cord is considered the disconnect device for
isolating this equipment from supply mains. Do not position the equipment
so that it is difficult to reach or disconnect.

WARNING To avoid a possible explosion, do not use the
electrocardiograph in the presence of flammable anesthetics: mixtures
containing air, oxygen, or nitrous oxide.

WARNING When transporting the electrocardiograph on a cart, tuck the
patient cable away to keep them clear of the wheels and to minimize trip
hazards.

Warnings related to accessories and other equipment

WARNING To avoid the risk of electric shock, this equipment must only
be connected to a supply mains with protective earth.

WARNING For operator and patient safety, peripheral equipment and
accessories that can come in direct patient contact must be in compliance
with all appropriate safety, EMC, and regulatory requirements.

WARNING All signal input and output (I/O) connectors are intended for
connection of only devices complying with IEC 60601-1, or other IEC
standards (for example, IEC 60950), as appropriate to the device.
Connecting additional devices to the electrocardiograph might increase
chassis or patient leakage currents.

WARNING The electrocardiograph has not been designed for use with
high-frequency (HF) surgical equipment and does not protect against
hazards to the patient.

WARNING Defective batteries can damage the electrocardiograph.
Visually inspect the battery at least monthly, if the battery shows any signs
of damage or cracking, it must be replaced immediately and only with a
battery approved by Welch Allyn.

8 Introduction CP 150 12-lead resting electrocardiograph

WARNING Improper disposal of batteries may create an explosion or
contamination hazard. Never dispose of batteries in refuse containers.
Always recycle batteries according to local regulations.

Warnings related to using the electrocardiograph

WARNING No modification of this equipment is allowed.

WARNING This device captures and presents data reflecting a patient’s

physiological condition. When reviewed by a trained physician or clinician,
this data can be useful in determining a diagnosis. However, the data
should not be used as a sole means for determining a patient’s diagnosis or
prescribing treatment.

WARNING To provide CF protection use only accessories approved by
Welch Allyn. Visit www.welchallyn.com. The use of any other accessories
can result in inaccurate patient data, can damage the equipment, and can
void your product warranty.

WARNING To avoid serious injury or death, take these precautions during
patient defibrillation:

• Avoid contact with the electrocardiograph, patient cable, and patient.

• Verify that the patient leads are properly connected.

• Place defibrillator paddles properly in relation to electrodes.

• After defibrillation, pull each patient lead out of the patient cable and inspect
the tips for charring (black carbon marks). If there is any charring, the patient
cable and individual leads must be replaced. If there is no charring, fully
reinsert the leads into the patient cable. (Charring can occur only if a lead is
not fully inserted into the patient cable before defibrillation.)

WARNING To prevent the spread of infection, take these precautions:

• Dispose of single-use components (for example, electrodes) after using
them once.

• Regularly clean all components that come in contact with patients.

• Avoid ECG testing for patients with open, infectious sores.

WARNING Avoid positioning any leads or cables so that they could easily
trip someone or become wrapped around a patient’s neck.

WARNING To ensure safe use of the device, follow the documented
maintenance procedures.

WARNING Only qualified service personnel should attempt to repair the
electrocardiograph. In case of a malfunction, call Technical Support.

WARNING Do not perform ST segment analysis on the ECG screen
display, since these ECG representations are scaled. Make manual
measurements of ECG intervals and magnitudes on printed ECG reports
only.

WARNING To maintain diagnostic accuracy and to comply with IEC
60601-02-51 and IEC 60601-02-25, do not scale (re size) when sending a
saved ECG to an external printer.

Directions for use Introduction 9

WARNING To avoid injury, do not touch the print head immediately after
printing. It might be hot.

General cautions

Cautions indicate conditions or practices that could damage the equipment or other
property.

CAUTION Federal US law restricts sale of the device identified in this
manual to, or on the order of, a licensed physician.

CAUTION When removing the electrocardiograph from storage, allow it to
thermally stabilize to surrounding environmental conditions before using it.

CAUTION To prevent possible damage, do not use sharp or hard objects
to press the touch screen or the buttons. Only use fingertips.

CAUTION Do not expose the patient cable to strong ultraviolet radiation.

CAUTION Do not pull or stretch the patient cable. Doing so could result in

mechanical or electrical failures. Form the patient cable into a loose loop
before storing.

CAUTION Avoid positioning the patient cable where it might get pinched,
stretched, or stepped on. Otherwise, measurements might no longer be
accurate, and repair might be necessary.

CAUTION Using the equipotential terminal for anything but grounding
purposes may contribute to damage of the device.

CAUTION Use only parts and accessories, including thermal paper, that
were supplied with the device and available through Welch Allyn. The use
of accessories other than those specified may result in degraded
performance or unsafe use of this device.

CAUTION Portable and mobile RF communications equipment can affect
the performance of the electrocardiograph.

CAUTION The electrocardiograph meets the Class A requirements of IEC
60601-1-2 regarding incidental emission of radio frequency interference. As
such it is suitable for use in commercial grade electrical environments. If
the electrocardiograph is used in residential grade electrical environments
and you experience incidental interference with other equipment that uses
radio frequency signals to operate, minimize the interference.

CAUTION Other medical equipment—including but not limited to
defibrillators, ultrasound machines, pacemakers, and other stimulators—
may be used simultaneously with the electrocardiograph. However, such
devices may disturb the electrocardiograph signal.

CAUTION The power cord must be disconnected from AC power before
cleaning, maintaining, transporting, or servicing.

10 Introduction CP 150 12-lead resting electrocardiograph

CAUTION The requirements of AAMI EC11, Section 3.2.7.2, Frequency
and Impulse Response, for an impulse triangle waveform may be impacted
by up to 5 milliseconds of small amplitude dampened ringing immediately
after the impulse when the muscle filter (35 Hz) is turned on or a small
amplitude offset when the baseline filter (0.5 Hz) is turned on. These filters,
in any combination turned on or off, meet the AAMI requirements.
Measurements performed by the optional interpretation algorithm are
unaffected by any filter selections.

Note The entire patient cable, up to and including the electrodes are considered

to be an Applied Part.

Setup

Connecting the patient cable

11

WARNING Do not allow the conductive parts of the patient cable,
electrodes, or associated connections of defibrillation-proof applied parts,
including the neutral conductor of the patient cable and electrodes, to
come into contact with other conductive parts, including earth ground.
Otherwise, an electrical short might result, risking electric shock to patients
and damage to the device.

WARNING To avoid injury to the patient or damage to the device, never
plug patient leads into any other device or wall outlet.

WARNING To provide CF protection use only accessories approved by
Welch Allyn. Visit www.welchallyn.com. The use of any other accessories
can result in inaccurate patient data, can damage the equipment, and can
void your product warranty.

CAUTION Always connect the patient cable and the leads properly during
defibrillation. Otherwise, the connected leads could be damaged.

Loading the thermal paper

The electrocardiograph prints on z-fold thermal paper.

Store the paper in a cool, dry, dark place.

•

• Do not expose it to bright light or UV sources.

• Do not expose it to solvents, adhesives, or cleaning fluids.

• Do not store it with vinyls, plastics, or shrink wraps.

Setup CP 150 12-lead resting electrocardiograph

12

Powering the electrocardiograph

The electrocardiograph runs on AC or battery power. Plug the electrocardiograph into AC
power as often as possible so that the built-in charger can keep the battery charged.
Regardless of the battery condition, you can use the electrocardiograph whenever it is
plugged in.

WARNING When you use AC power, always plug the electrocardiograph
into a hospital-grade outlet to avoid the risk of shock.

WARNING If the integrity of the building’s safety ground is in doubt,
operate this device on battery power to avoid the risk of shock.

To turn on or turn off

Press .

Verifying proper operation

To ensure the accuracy of test data, you should verify proper operation of the
electrocardiograph before it is used for the first time with patients. You should reverify
proper operation once a year.

Directions for use Setup 13

To verify proper operation

1. Use an ECG simulator to acquire and print a standard 12-lead ECG of known
amplitude and rate.

2. Look for the following indications of proper operation:

• Printing should be dark and even across the page.

• There should be no evidence of print-head dot failure (no printing breaks forming

horizontal streaks).

• Thermal paper should move smoothly and consistently during printing.

• The waveforms should have no distortion or excessive noise.

• The amplitude and rate of the waveforms should match the input value from the

ECG simulator.

• Z-fold thermal paper should stop with perforations near the tear bar, indicating

proper cue-sensor operation.

3. If you see any indications of improper operation, contact Welch Allyn Technical
Support.

Connecting to a CardioPerfect workstation

You can connect a electrocardiograph to a Welch Allyn CardioPerfect workstation via
USB cable or via Ethernet cable. Software provided in the Connex Software Connectivity
Kit is required to communicate with the workstation. After you connect, you can perform
several functions from the electrocardiograph, including:

•

Send ECG tests to the workstation.

• Search for patient data in the workstation database.

Cables longer than 3 meters have not been verified for use with the electrocardiograph.
Do not use cables longer than 3 meters.

To connect to a network-connected workstation via Ethernet cable

1. Connect the electrocardiograph to the same network as the workstation. If you need
help, consult your network administrator.

WARNING To reduce the risk of fire and shock hazards,
connect Ethernet cables within the boundaries of a single
building. Ethernet cables that span multiple buildings can
introduce fire or shock hazards unless fiber optic cables or
lightning arrestors are properly installed or other appropriate
safety measures are taken.

14 Setup CP 150 12-lead resting electrocardiograph

2. Go to the Network screen

a. Touch the Settings tab.

b. Touch the Device tab.

c. Touch the Network button.

3. Fill in the screen.

• If DHCP is enabled for the network, select the DHCP checkbox.

• If DHCP is not enabled, fill in the fields: Network IP address, Subnet mask, and

Default gateway.

4. Touch the Test with ping button.

5. Connect to the network.

a. In the Host Address field, enter the host IP address.

b. Touch the Ping Test button. The electrocardiograph pings the host.

6. Choose one of these to specify how to get DCP server IP information:

• Obtain server IP information automatically: Select this option if you want the

device to get the IP address, or if you don’t know the server’s IP address.

• DCP IP address: Fill in this field if your DCP server IP address is available.

• Fill in the UDP broadcast port field.

7. Touch Test connection.

8. Fill in the Remote file server address, User ID, and password.

9. Touch Test remote folder.

The electrocardiograph connects to the remote file server. The electrocardiograph is
ready to send tests to the remote file server. (To set up the workstation, see the
instructions that came with the workstation connectivity software.

ECG home screen

ECG home screen

The ECG home screen includes the following areas:

15

Item Area

1 Device status

2 Content

3 Navigation

Device status area

The Device status area, located at the top of the ECG home screen, displays:

Time and date

•

• Battery status

• Error or information messages. These items are displayed until the condition has
been resolved.

16

ECG home screen CP 150 12-lead resting electrocardiograph

Content area

The Content area includes 3 test selection buttons and a preview selection button:

• Auto ECG

• Rhythm ECG

• Stat ECG

• Electrode Placement

The content area also provides shortcuts to several controls.

About the test types

Auto ECG

Rhythm ECG

Stat ECG

Navigation area

The Navigation area includes the following tabs:

•

ECG home: Displays ECG test types and provides shortcuts to several controls.

• Saved tests: Accesses the patient ECG tests.

• Settings: Accesses device configuration settings.

A report typically showing a 10-second acquisition of 12 leads of ECG information combined
with patient data, measurements, and optional interpretation. Auto ECGs can be saved to
the electrocardiograph’s test directory or to a USB mass-storage device.

A continuous, real-time printout of rhythm strips with a user-defined lead configuration.
Rhythm ECGs are printouts only. They cannot be saved.

An auto ECG that starts without waiting for you to enter patient data or adjust the
waveforms.

To navigate to a tab, touch the tab in the Navigation area with the corresponding name.
The active tab is highlighted.

Directions for use ECG home screen 17

Example ECG report

18 ECG home screen CP 150 12-lead resting electrocardiograph

ECG tests

Attaching the leads to the patient

Proper lead attachment is important for a successful ECG. The most common ECG
problems are caused by poor electrode contact and loose leads. Follow your local
procedures for attaching the leads to the patient. Here are some common guidelines.

19

WARNING Electrodes can cause allergic reactions. To avoid this, follow
the electrode manufacturer’s directions.

To attach the leads to the patient

1.

Prepare the patient.

• Describe the procedure. Explain the importance of holding still during the test.

(Movement can create artifact.)

• Verify that the patient is comfortable, warm, and relaxed. (Shivering can create

artifact.)

• Put the patient in a reclining position with the head slightly higher than the heart

and legs (the semi-Fowler’s position).

2. Select the electrode locations. (See the “Electrode locations” chart.)

• Look for flat areas.

• Avoid fatty areas, bony areas, and major muscles.

3. Prepare the electrode locations.

• Shave or clip the hair.

• Thoroughly clean the skin, and lightly rub it dry. You may use soap and water,

isopropyl alcohol, or skin preparation pads.

4. Attach the lead wires to the electrodes.

5. Apply the electrodes to the patient.

20 ECG tests CP 150 12-lead resting electrocardiograph

Electrode examples, left to right: arm clamp (reusable), Welsh cup (reusable), tab
electrode (disposable), monitoring electrode (disposable).

• For reusable electrodes: Use electrode paste, gel, or cream to cover an area

the size of each electrode but no larger. Secure the arm and leg clamps. Apply
the Welsh cups (suction electrodes) to the chest.

• For disposable tab electrodes: Place the electrode tab between the “jaws” of

the connector. Keep the tab flat. Verify that the metal portion of the connector
makes contact with the skin side of the electrode tab.

• For all disposable electrodes: Lightly tug on the connector to ensure that the

lead is securely attached. If the electrode comes off, replace it with a new
electrode. If the connector comes off, reconnect it.

Directions for use ECG tests 21

Electrode locations

AHA IEC Location

A V1 (red) C1 (red) Fourth intercostal space at the right sternal border.

B V2 (yellow) C2 (yellow) Fourth intercostal space at the left sternal border.

C V3 (green) C3 (green) Midway between V2 and V4.

D V4 (blue) C4 (brown) Fifth intercostal space to the left of the midclavicular line.

E V5 (orange) C5 (black) Anterior axillary line at the same horizontal level as V4.

F V6 (purple) C6 (purple) Mid-axillary line at the same horizontal level as V4 and V5.

G LA (black) L (yellow) Just above the left wrist on the inside of the arm.

H LL (red) F (green) Just above the left ankle.

I RL (green) N (black) Just above the right ankle.

J RA (white) R (red) Just above the right wrist on the inside of the arm.

22 ECG tests CP 150 12-lead resting electrocardiograph

Viewing electrode placement

1. Touch the (ECG preview) button.

The ECG preview screen appears.

2. Touch the (torso) button to enlarge the lead placement image or touch

to close it.

Performing an Auto ECG test

CAUTION Patient data is not saved until the ECG test is completed.

Note The ECG configuration settings can be changed in the Settings tab. The

following settings may appear differently if the default settings have been
modified.

1. Touch the (Auto ECG) button. The Summary tab appears.

2. (Optional) Search for patient.

The Search tab gives you access to patient data in the Saved tests directory or in
a connected database (CardioPerfect workstation or EMR).

• Touch the Search tab.

• Enter the Patient ID or Last name.

• Touch the OK button.

• Touch the Search button.

• Touch the patient's name or ID in the Patient Name/Patient ID field.

• Touch the Select button.

• Touch the (Next) button to review or edit patient information.

• Touch the (Next) button again.

Skip to step 7.

3. Enter the following patient information as desired:

Directions for use ECG tests 23

• Patient ID. Touch the OK button.

• Birth date. Touch the OK button.

• Last name. Touch the OK button.

• First name. Touch the OK button.

• Middle Initial. Touch the OK button.

Note If the patient has a pacemaker touch the Pacemaker present

button.

4. Touch the (Next) button.

5. Enter the following patient information as desired:

• Gender

• Race

• Height. Touch the OK button.

• Weight. Touch the OK button.

6. Touch the (Next) button.

7. Attach the leads to the patient.

Note If the lead-status screen is closed, touch the (torso)

button to enlarge the lead-status screen.

Any flashing dots on the lead-status screen indicate unattached or poorly attached
leads.

When all leads have been attached for several seconds, the ECG preview screen
appears.

24 ECG tests CP 150 12-lead resting electrocardiograph

Item Button

1 Leads button

2 Gain button (size)

3 Speed button

4 Filters button

8. If an Artifact message appears, minimize the artifact, as described under
Troubleshooting. You might need to ensure that the patient is comfortably warm,
reprepare the patient’s skin, use fresh electrodes, or minimize patient motion.

9. (Optional) Adjust the waveforms, using the buttons to cycle through the following
options:

• leads displayed

• gain (size)

• speed

• filters

10. Touch the Print button to perform the Auto ECG test.

11. If a Waiting for 10 seconds of quality data message appears, at least 10 seconds
of ECG data have been collected with excessive artifact. Time requirements in the
message may vary, based upon selected print format. Minimize the artifact, as
described under Troubleshooting. Then wait for the test to print. If necessary, you
can override the wait time and print the available data immediately, but the result
might be an incomplete or poor-quality test.

12. After the test prints, select the desired option: Reprint, Save, or Retest. If the Auto
Save setting is turned off, touch Save to save the test. Select one of the following
locations:

• Local (internal memory)

• USB mass storage device (Any tests that you save to a USB mass storage

device can be retrieved only from a CardioPerfect workstation.)

• Workstation

Directions for use ECG tests 25

• Remote file location

13. Touch Reprint to print the test again, touch Retest to discard the test and start over,
or touch Exit.

WARNING To avoid the risk of associating reports with the
wrong patients, make sure that each test identifies the
patient. If any report does not identify the patient, write the
patient identification information on the report immediately
following the ECG test.

26 ECG tests CP 150 12-lead resting electrocardiograph

Saved tests

Searching for saved tests

Search for Saved Tests by:

• Date

• Last name

• Patient ID

• Test type

○

All

○

Unconfirmed

○

Unprinted

○

Unsent

27

Once retrieved, Saved Tests can be printed, deleted, edited, or sent to a USB storage
device or a Workstation.

Managing the saved tests

Saved tests are a group of ECG tests that have been saved in the electrocardiograph
memory.

With all electrocardiograph models, you can delete or print saved tests. You can also do
the following:

•

Edit the patient data in Saved Tests.

• Send saved tests to a USB mass-storage device or to a Welch Allyn CardioPerfect
workstation. (Any tests that you send to a USB mass-storage device can be retrieved
only from a CardioPerfect workstation.)

To manage saved tests

Touch the Saved tests tab.

1.

2. Enter data into the Date from, Last name, or Patient ID field, or select the check
box to search the Test Type for All, Unconfirmed, Unprinted, or Unsent tests.

3. Touch the (Search) button.

4. Select a single test or multiple tests.

5. Touch the Delete, Print, Edit, or Send button to manage the saved tests.

28 Saved tests CP 150 12-lead resting electrocardiograph

Settings

Viewing or changing the ECG settings

• The ECG settings control the content and format of your reports. These settings
include a second Auto report format (Auto report) and a Rhythm format (Rhythm
report), customizable patient data fields, and auto save options.

29

To view or change the settings

1. Touch the Settings tab. The ECG tab and the vertical ECG configuration tab appear.

Modify the settings as desired:

Note The following settings are saved as they are selected.

• Waveform centering on

• Baseline filter on

• Muscle filter on

• Save reminder on

• Default gain

• QTc method

Touch the (Next) button.

Modify the settings as desired:

•

Electrode labels

• Electrode configuration

• ECG interval

• Lead timing

Touch the Rhythm report tab.

Modify the settings as desired:

Default speed

•

• Print options

Touch the (Next) button.

Modify the settings as desired:

30 Settings CP 150 12-lead resting electrocardiograph

• Rhythm leads 1 - 12

Touch the Auto report tab.

Modify the settings as desired:

• Printer

• Report format

• Average cycles

• Rhythm leads 1 - 3

Touch the (Next) button.

Modify the settings as desired:

• First name

• Height

• Weight

• Race

• Middle Initial

Select:

•

Age or Birth date

Touch the (Next) button.

Modify the settings as desired:

•

Extended measurements

• MEANS reason statements (optional purchase)

Selecting the device information

To select the device information

1.

Touch the Settings tab. The ECG tab appears.

2. Touch the Device tab. The Regional tab appears.

Modify the settings as desired:

•

Date format

• Time format

• Height

○

cm

○

ft & in

○

in

• Weight

○

kg

○

lb

• Mains (AC) frequency

Directions for use Settings 31

• Language

Touch the Device configuration tab.

Modify the settings as desired:

• Auto save

• Data management

• LCD brightness

• HR beep on

• Error beep on

• Caps lock on or off

• Calibrate

Touch the About tab to view:

• Device serial number, model, software version, memory, battery charge percentage,
etc.

Touch the Network tab to view or modify network settings. See To connect to a
network-connected workstation via Ethernet cable for further details.

If you need help, consult your network administrator.

Touch the Ownership tab.

Modify the settings as desired:

•

Practice ID

• Device ID

• Contact information

Touch the Updates tab.

•

Touch Update to install the latest device software.

• Touch Restore to restore factory defaults.

• Touch Save configuration to save the device configuration to USB.

• Touch Copy configuration to copy the configure from USB.

32 Settings CP 150 12-lead resting electrocardiograph

Maintenance

Cleaning the equipment

WARNING Keep the electrocardiograph, reusable electrodes, and the
patient cable clean. Patient contact with contaminated equipment can
spread infection.

33

CAUTION Never let soap or water come into contact with the
electrocardiograph’s internal printer, connectors, or jacks.

CAUTION Never immerse the electrocardiograph or the patient cable in
liquid. Never autoclave or steam clean the electrocardiograph or the patient
cable. Never pour alcohol directly on the electrocardiograph or the patient
cable, and never soak any components in alcohol. If any liquid enters the
electrocardiograph, remove the electrocardiograph from service, and have
it inspected by a qualified service person before using it again.

Note The patient cables should be cleaned after each use.

Acceptable cleaning solutions:

•

Mild detergent and water, ½ tsp detergent per cup of water

• Bleach and water, 1 part bleach (6.00% sodium hypochlorite) with 9 parts water

• Isopropyl alcohol and water, 70% by volume

•

PDI®Sani-Cloth® Plus wipes (14.85% isopropanol)

• CaviWipes™ (17.2% isopropanol)

To clean the equipment (monthly or more often if needed)

1.

Disconnect the power plug from the AC outlet.

2. Turn off the electrocardiograph. (Press and hold the power button for at least six

seconds until the screen goes blank.)

Maintenance CP 150 12-lead resting electrocardiograph

34

3. Dampen a cloth with any of the acceptable cleaning solutions, and wipe the exterior

of the patient cable and electrocardiograph. Dry all components with a clean, soft
cloth, or paper towel.

4. Before you turn on the electrocardiograph again, wait at least 10 minutes for all

traces of liquid to evaporate.

Inspecting the equipment

Perform the following inspections daily.

• Check for cracked or broken patient cable, patient electrodes, power cord,
communications cables, display, and enclosure.

• Check for bent or missing pins on all cables.

• Check all cable and cord connections; reseat if any connectors are loose.

Testing the electrocardiograph

Welch Allyn recommends verifying proper operation of the electrocardiograph once a
year to ensure reliability. See Verifying proper operation.

Whenever the electrocardiograph is serviced or whenever problems are suspected,
verify continued electrical safety of the device using IEC 60601-1 or ANSI/AAMI ES1
methods and limits.

WARNING Only qualified service personnel should perform leakage
current tests.

Test for the following:

•

Patient leakage current

• Chassis leakage current

• Earth leakage current

• Dielectric strength (AC and patient circuits)

Replacing the battery

Replace the battery under these circumstances:

•

It loses its charge quickly.

• You have charged it, and the electrocardiograph still does not turn on when
unplugged.

The first time that you press the power button after installing a new battery, the
electrocardiograph goes through some diagnostic tests that cause it to take longer than
usual to power up.

Discard the old battery appropriately. Contact your local authorities concerning recycling.

Directions for use Maintenance 35

To replace the battery

Replacing the AC fuses

You might need to replace one or both of the AC fuses if the AC power indicator does
not light up when the electrocardiograph is connected to AC power.

WARNING Failure to unplug could result in electrocution.

36 Maintenance CP 150 12-lead resting electrocardiograph

To replace the AC fuses

If either fuse is dark or has a broken wire, replace the fuse. Line up the fuse case with
the opening; it goes in only one way.

Storing the equipment

When storing the electrocardiograph, cords, and accessories, observe the environmental
storage conditions that are identified in the product specifications.

Discarding the equipment

Discard the electrocardiograph, cords, and accessories according to local laws.

Do not dispose of this product as unsorted municipal waste. Prepare this product for reuse or
separate collection as specified by Directive 2002/96/EC of the European parliament and the
Council of the European Union on Waste Electronic and Electrical Equipment (WEEE). If this
product is contaminated, this directive does not apply. For more specific disposal information,
see www.welchallyn.com/weee, or contact Welch Allyn Customer Service at [phone].

Troubleshooting

Lead-quality problems

“Artifact” message on the screen

Artifact is signal distortion that makes it difficult to accurately discern the waveform
morphology.

37

Causes

•

The patient was moving.

• The patient was shivering.

• There is electrical interference.

Actions

See actions for wandering baseline, muscle tremor, and AC interference.

Wandering baseline

Wandering baseline is an upward and downward fluctuation of the waveforms.

Causes

•

Electrodes are dirty, corroded, loose, or positioned on bony areas.

• The electrode gel is insufficient or dried.

• The patient has oily skin or used body lotions.

• Rising and falling of chest during rapid or apprehensive breathing.

Actions

Clean the patient’s skin with alcohol or acetone.

•

• Reposition or replace the electrodes.

• Verify that the patient is comfortable, warm, and relaxed.

• If wandering baseline persists, turn the baseline filter on.

38 Troubleshooting CP 150 12-lead resting electrocardiograph

Muscle tremor

Causes

• The patient is uncomfortable, tense, nervous.

• The patient is cold and shivering.

• The exam bed is too narrow or short to comfortably support arms and legs.

• The arm or leg electrode straps are too tight.

Actions

• Verify that the patient is comfortable, warm, and relaxed.

• Check all electrode contacts.

• If interference persists, turn the muscle-tremor filter on. If interference still persists,
the problem is probably electrical in nature. See the suggestions for reducing AC
interference (in a related troubleshooting tip).

AC interference

AC interference superimposes even-peaked, regular voltage on the waveforms.

Causes

•

The patient or technician was touching an electrode during recording.

• The patient was touching a metal part of an exam table or bed.

• A lead wire, patient cable, or power cord are broken.

• Electrical devices in the immediate area, or lighting, or wiring concealed in walls or
floors are interfering.

• An electrical outlet is improperly grounded.

• The AC filter is turned off or set incorrectly.

Actions

•

Verify that the patient is not touching any metal.

• Verify that the AC power cable is not touching the patient cable.

• Verify that the proper AC filter is selected.

• If interference persists, unplug the electrocardiograph from AC power and run it on
the battery. If this solves the problem, you’ll know that the noise was introduced
through the power line.

• If interference still persists, the noise may be caused by other equipment in the
room or by poorly grounded power lines. Try moving to another room.

Directions for use

Lead alert or square wave

A dot might be flashing on the lead-status screen. Or one or more leads might appear as
a square wave.

Causes

• Electrode contact might be poor.

• A lead might be loose.

• A lead might be defective.

Actions

• Replace the electrode.

• Verify that the patient’s skin has been properly prepared.

• Verify that electrodes have been properly stored and handled.

• Replace the patient cable.

Troubleshooting 39

System problems

The electrocardiograph won't turn on when it is plugged in

Causes

•

The AC power connection is faulty.

• An AC fuse is blown.

• There is no AC power.

Actions

•

Check the AC power source.

• Check the AC fuses.

The electrocardiograph won't turn on when it is unplugged

Causes

•

The battery is disconnected or incorrectly connected.

• The battery is low, not charging, depleted, or bad.

Actions

Check the battery connections.

•

• Recharge the battery.

• Replace the battery.

The electrocardiograph shuts down during printing

Causes

The battery is low or bad.

•

Actions

Troubleshooting CP 150 12-lead resting electrocardiograph

40

• Recharge the battery.

• Replace the battery.

The electrocardiograph prints fewer than 10 reports on a full battery charge

Causes

• The battery is degraded.

Actions

• Replace the battery.

The electrocardiograph does not respond when you press buttons or touch the screen

Causes

• The electrocardiograph is frozen.

Actions

• Reset the electrocardiograph by pressing and holding the power button for at least
six seconds until the screen goes blank. Press the power button again. The
electrocardiograph goes through some diagnostic tests that cause it to take longer
than usual to power up.

Note For more troubleshooting guidelines, see the service manual.

Limited warranty

Welch Allyn warrants the product to be free of defects in material and workmanship and
to perform in accordance with manufacturer's specifications for the period of three years
from the date of purchase from Welch Allyn or its authorized distributors or agents.

The warranty period shall start on the date of purchase. The date of purchase is: 1) the
invoiced ship date if the device was purchased directly from Welch Allyn, 2) the date
specified during product registration, 3) the date of purchase of the product from a
Welch Allyn authorized distributor as documented from a receipt from said distributor.

This warranty does not cover damage caused by: 1) handling during shipping, 2) use or
maintenance contrary to labeled instructions, 3) alteration or repair by anyone not
authorized by Welch Allyn, and 4) accidents.

CAUTION The service manual is for use only by qualified service
personnel who understand technical English.

The product warranty is also subject to the following terms and limitations: Accessories
are not covered by the warranty. Refer to the directions for use provided with individual
accessories for warranty information.

Shipping cost to return a device to a Welch Allyn Service center is not included.

A service notification number must be obtained from Welch Allyn prior to returning any
products or accessories to Welch Allyn's designated service centers for repair. To obtain
a service notification number, contact Welch Allyn Technical Support.

Directions for use

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILTY AND FITNESS FOR A PARTICULAR PURPOSE. WELCH ALLYN’S
OBLIGATION UNDER THIS WARRANTY IS LIMITED TO REPAIR OR REPLACEMENT
OF PRODUCTS CONTAINING A DEFECT. WELCH ALLYN IS NOT RESPONSIBLE FOR
ANY INDIRECT OR CONSEQUENTIAL DAMAGES RESULTING FROM A PRODUCT
DEFECT COVERED BY THE WARRANTY.

Service policy

All repairs on products under warranty must be performed by Welch Allyn or by a service
provider authorized by Welch Allyn. Unauthorized repairs will void the warranty. In
addition, whether or not covered under warranty, any product repair should be
performed exclusively by Welch Allyn or by a service provider that has been authorized
by Welch Allyn.

If the product fails to function properly—or if you need assistance, service, or spare parts
—contact the nearest Welch Allyn Technical Support Center.

Before contacting Welch Allyn, try to duplicate the problem, and check all accessories to
ensure that they are not causing the problem. When calling, please be prepared to
provide:

• Product name, model number, and serial number of your product.

• Complete description of the problem.

• Complete name, address and phone number of your facility.

• For out-of-warranty repairs or spare parts orders, a purchase order (or credit card)
number.

• For parts orders, the required spare or replacement part numbers.

Troubleshooting 41

If your product requires warranty, extended warranty, or non-warranty repair service,
please call first the nearest Welch Allyn Technical Support Center. A representative will
assist you troubleshooting the problem and will make every effort to solve it over the
phone, avoiding potential unnecessary return of your product.

In case a return cannot be avoided, the representative will record all necessary
information and will provide a Return Material Authorization (RMA) number, as well as
the appropriate return address. An RMA number must be obtained prior to any return.

If you have to return your product for service, follow these recommended packing
instructions:

•

Remove all hoses, cables, sensors, power cords, and other accessories (as
appropriate) before packing, unless you suspect they are associated with the
problem.

• Wherever possible use the original shipping carton and packing materials.

• Include a packing list and the Welch Allyn Return Material Authorization (RMA)
number.

It is recommended that all returned goods be insured. Claims for loss or damage to the
product must be initiated by the sender.

42 Troubleshooting CP 150 12-lead resting electrocardiograph

Specifications

Item Specification

43

Dimensions, including rubber
feet (length x width x height)

Weight , including battery 5.2 kg (11.5 lb)

Keyboard type (power button) Polyester overlay

Display

Type TFT, 18 cm (7 in.) color touch screen

Resolution WVGA, 800 x480

Thermal paper

Z-fold

Thermal printer (internal) Computer-controlled dot array, 8 dots/mm

Thermal-chart-paper speeds 10, 25, 50 mm/s

Gain settings

380.9 mm x 358.1 mm x 136.2 mm (15 x 14.1 x 5.4 in.)

8.25 x 11 inches (21 x 28 cm), 200 sheets

Auto ECGs 2.5, 5, 10, 20 mm/mV, Auto

Rhythm ECGs 2.5, 5, 10, 20 mm/mV

Lead configurations Standard, Cabrera

Report formats, internal printer,
Auto report*

3x4-2.5s @ 25 mm/s

3x4-2.5s @ 50 mm/s

3x4+1R-2.5s @ 25 mm/s

3x4+3R-2.5s @ 25 mm/s

3x4-5.0s @ 25 mm/s

3x4-5.0s @ 50 mm/s

Specifications CP 150 12-lead resting electrocardiograph

44

Item Specification

6x2-5.0s @ 25 mm/s

6x2-5.0s @ 50 mm/s

12x1-10.0s @ 25 mm/s

Report formats, internal printer,
Average

ECG storage (in test directory) At least 100 ECG tests

Patient storage

Frequency range 0.3 to 150 Hz

Digital sampling rate > 1,000 samples/second/channel

Pacemaker detection ANSI/AAMI EC11

Power requirement Universal AC power supply 110-240 V~, 50/60 Hz ~, 1.5 A maximum

AC fuses Time-lag type, 2.0-amp 250-V rating, Littelfuse 0218002P or equivalent

Rechargeable battery 9 cells

3x4+3R @ 25 mm/s

3x4+3R @ 50 mm/s

6x2+1R @ 25 mm/s

6x2+1R @ 50 mm/s

No print

Up to 50 patients

Rating

Composition

Recharge time to 100 percent
capacity

Full charge capacity

Filters

High-performance baseline 0.5 Hz

Muscle tremor 35 Hz

AC interference 50 Hz or 60 Hz

Safety, EMC, and regulatory
compliance

10.8 V 6.75Ah (73Wh)

Lithium-ion

4 hrs

25 ECG tests @ 20 minutes per test

8 hrs of continuous operation or 250 continuous ECGs

ANSI/AAMI EC11**

CAN/CSA C22.2 No. 601.1

CAN/CSA C22.2 No. 601.1.2

IEC/EN 60601-1

IEC/EN 60601-1-2

IEC/EN 60601-1-4

Directions for use Specifications 45

Item Specification

CAN/CSA C22.2 No. 601.1.4

CAN/CSA C22.2 No. 601.2.25

Standard connectivity

Connectivity with electronic
medical records

Electrodes Rigorously tested for conductivity, adhesion, and hypoallergenic qualities, and exceed

Power cable Meets or exceeds Type SJT.

Environmental operating
conditions

Temperature +10° C to +40° C (+50° F to +104° F)

Relative humidity 15 - 95% noncondensing (30 - 70% for printing)

Atmospheric air-pressure limits 700 - 1060 hPa

1 USB client
4 USB hosts

Through the Welch Allyn CardioPerfect workstation software

all AAMI standards

IEC/EN 60601-1-6

IEC/EN 60601-2-25 ***

IEC/EN 60601-2-51* (3x4 report format)

Environmental storage
conditions

Temperature -20° C to +50° C (-4° F to +122° F)

Relative humidity 15 - 95% noncondensing

Atmospheric air-pressure limits 700 - 1060 hPa

Protection against electric shock Class I, internally powered Type CF

Mode of operation Continuous

* If you print at a high gain setting, the waveform or calibration marks might be clipped. This clipping does not

comply with clause 51.103.1 of the IEC/EN 60601-2-51 standard. Use a lower gain setting to observe the full
waveform.

** Per AAMI EC11:1991/®)2007 Diagnostic Electrocardiographic Devices, Section 3.1.2.1 Disclosure of cautionary

information/ performance characteristics paragraph c) Accuracy of input signal reproduction, the manufacturer
shall disclose the methods used to establish overall system error and frequency response. Welch Allyn has used
methods A & D, as prescribed in section 3.2.7.2 and 4.2.7.2 of this same standard, to verify overall system error
and frequency response. Because of the sampling characteristics and the asynchronism between sample rate and
signal rate, digital ECG systems such as the CP 150 may produce a noticeable modulating effect from one cycle to
the next, particularly in pediatric recordings. This phenomenon is not physiologic.

46 Specifications CP 150 12-lead resting electrocardiograph

*** Disposable electrodes from Welch Allyn shall be used during patient defibrillation.

Specifications are subject to change without notice.

Reorder No.
Material No.

105313

719479