Nonin 8500A User manual

Operator’s Manual

Models 8500A & 8500MA

Hand-held Pulse Oximeters

With Alarms

English

About the Manual

The information in this manual has been carefully checked and is believed to be accurate. In the interest of continued
product development, NONIN reserves the right to make changes and improvements to this manual and the products it
describes at any time, without notice or obligation.

Trademarks

is a registered trademark of NONIN Medical, Inc.

References

References to "NONIN" in this manual shall imply NONIN Medical, Inc.

References to "8500A" in this manual shall imply Models 8500A and 8500MA.

Authorized EC Representative:

MPS, Medical Product Service GmbH

Borngasse 20

D-35619 Braunfels, Germany

© 2007 Nonin Medical, Inc.

6130-101-01

Nonin Medical, Inc.

st

13700 1

Plymouth, MN 55441-5443

• [phone] • [phone] • FAX [phone]

Avenue North

Table of Contents

Precautions for Use .................................................................................................................................................1

Unpacking Your Pulse Oximeter ............................................................................................................................ 3

Introduction ...............................................................................................................................................................4

A. Indications for Use .........................................................................................................................................4

B. General ..........................................................................................................................................................4

Operating Instructions .............................................................................................................................................5

A. Batteries .........................................................................................................................................................5

B. General ..........................................................................................................................................................6

Features .....................................................................................................................................................................9

A. Controls ..........................................................................................................................................................9

B. Displays ........................................................................................................................................................14

C. Printer/Serial Output ....................................................................................................................................17

D. Memory Option (8500MA Only) .................................................................................................................. 18

Specifications .........................................................................................................................................................20

Service .....................................................................................................................................................................21

Warranty ..................................................................................................................................................................22

Accessories ............................................................................................................................................................23

Troubleshooting Guide .........................................................................................................................................24

Guide to Symbols

Symbol Definition Of Symbol

ATTENTION:
Consult Accompanying Documents

Type BF Applied Part
(patient isolation from electric shock)

UL Mark for Canada and the United States with respect to electric shock, fire, and mechanical
hazards only in accordance with UL 60601-1 30EM and CAN/CSA C22.2 No. 601.1

CE Marking indicating conformance to EC directive No. 93/42//EEC concerning medical
devices

Indicates separate collection for electrical and electronic equipment (WEEE).

Precautions for Use

Contraindication

• Do not operate in an explosive atmosphere.

• Do not operate the NONIN 8500A in an MRI environment.

Warning

• The 8500A is intended only as an adjunct in patient assessment. It must be used in conjunction with clinical signs and symptoms.

• The audible alarm of the 8500A is for the convenience of the attendant near the patient. It is not intended to call an attendant from

another room or from a distance. The user must determine the audible distance based on the operating environment.

• Use only NONIN manufactured sensors. These sensors are manufactured to meet the calibration requirements for NONIN Pulse

Oximeters. Use of other manufacturer's sensors may cause improper pulse oximeter performance.

• Check the application site frequently to determine the circulation and skin sensitivity of the patient and the positioning of the sensor.

Each patient's sensitivity to NONIN sensors might vary depending upon medical status or skin condition.

• Use of NONIN double-backed adhesive strips or the Hydrogel tape strips should be discontinued if the patient exhibits allergic

reactions to the adhesive material.

• Do not stretch the adhesive tape while applying the sensors. This may cause inaccurate readings or skin blisters.

• This device should not be used adjacent to or stacked with other equipment. If adjacent or stacked use is necessary, the device

should be observed carefully to verify normal operation.

• The use of accessories, sensors, and cables other than those listed in this manual may result in increased emission and/or

decreased immunity of this device.

Caution

• Federal law (USA) restricts this device to sale by or on the order of a physician.

• Read this manual carefully before use of the 8500A.

• Carefully read the instructional insert provided with the sensor before use.

• The 8500A is intended for spot checking or continuous monitoring by an attending health care professional.

• The 8500A must be able to measure the pulse properly to obtain accurate SpO

pulse measurement before relying on the SpO2 measurement.

• Fingernail polish may reduce light transmission and thereby affect SpO

accuracy.

2

• The 8500A may not work on all patients. If you are unable to achieve stable readings, discontinue use.

• 8500A Pulse Oximeters are sensitive and must be repaired by knowledgeable and specially trained personnel only.

• The 8500A may interpret motion artifact of sufficient amplitude and regularity as good perfusion (green).

• The NONIN 8500A Hand Held Pulse Oximeter is calibrated to determine the percentage of arterial oxygen saturation of functional

hemoglobin. Significant levels of dysfunctional hemoglobin such as carboxyhemoglobin or methemoglobin may affect the accuracy
of the measurement.

• Cardiogreen and other intravascular dyes, depending on the concentration, may affect the accuracy of the SpO

• Do not use different types of batteries at the same time. Do not mix fully charged and partially charged cells at the same time.

These actions may cause the batteries to leak.

• Do not immerse the 8500A or NONIN sensors in liquid to clean.

• Do not use caustic or abrasive cleaning agents.

• Ear Clip and Reflectance sensors are not recommended for pediatric or neonatal use. The accuracy of the sensors has not been

established for pediatric or neonatal use.

• Do not remove any covers other than the battery cover when battery replacement is necessary . There are no user serviceable parts

inside other than the replaceable batteries.

• Alkaline batteries may leak or explode if used or disposed of improperly.

• This equipment complies with International Standard EN 60601-1-2:2001 for electromagnetic compatibility for medical electrical

equipment and/or systems. This standard is designed to provide reasonable protection against harmful interference in a typical
medical installation. However, because of the proliferation of radio-frequency transmitting equipment and other sources of electrical
noise in healthcare and other environments, it is possible that high levels of such interference due to close proximity or strength of a
source might disrupt the performance of this device. Medical electrical equipment needs special precautions regarding EMC, and all
equipment must be installed and put into service according to the EMC information specified in this manual.

• This device has not been tested for immunity to electromagnetic disturbances.

• Portable and mobile RF communications equipment can affect medical electrical equipment.

• In compliance with the European Directive on Waste Electrical and Electronic Equipment (WEEE) 2002/96/EC, do not dispose of

this product as unsorted municipal waste. This device contains WEEE materials; please contact your distributor regarding take-back
or recycling of the device. If you are unsure how to reach your distributor, please call Nonin for your distributor's contact information.

measurement. Verify that nothing is hindering the

2

measurement.

2

1

Manufacturer’s Declaration

Refer to the following table for specific information regarding this device’s compliance to IEC Standard 60601-1-2.

Table 1: Electromagnetic Emissions

Emissions Test Compliance Electromagnetic Environment— Guidance

This device is intended for use in the electromagnetic environment specified below.

The customer and/or user of this device should ensure that it is used in such an environment.

RF Emissions
CISPR 11

RF Emissions
CISPR 11

Harmonic Emissions
IEC 61000-3-2

Voltage Fluctuations/
Flicker Emissions
IEC 61000-3-3

Group 1

Class B

N/A

N/A

This device uses RF energy only for its internal function. Therefore, its RF
emissions are very low and are not likely to cause any interference in nearby
electronic equipment.

This device is suitable for use in all establishments, including domestic and
those directly connected to the public low-voltage power supply network that
supplies buildings used for domestic purposes.

2

Unpacking Your Pulse Oximeter

Contact the carrier immediately if the shipping carton for the 8500A is damaged. Carefully unpack the instrument and
its accessories. Confirm that the items listed below are packed with the 8500A Hand Held Pulse Oximeter. The
8500A/8500MA shipment includes:

• 8500A or 8500MA Hand Held Pulse Oximeter

• Operator’s Manual for Models 8500A and 8500MA

• Six AA batteries

• 8000K2 Sensor (Adult Finger Clip) or 8000AA Sensor (Adult Articulated Finger Clip)

If any item on this list is missing or damaged, do not use the pulse oximeter. Contact your local distributor or, if you do
not know your local distributor, contact NONIN's Customer Support department at [phone].

3

Introduction

A. Indications For Use

The 8500A Hand Held Pulse Oximeter is intended to be used for monitoring oxygen saturation and pulse rate for adult,
pediatric, and neonatal patients in hospital, ambulatory, home, and EMS environments. The 8500A may be used for
spot checking and/or continuous monitoring when attended by a healthcare professional. The variety of individual
sensors available must be checked frequently to ensure proper circulation and application.

B. General

The 8500A Hand Held Pulse Oximeter is small and light weight. The 8500A has audible and visual alarms for tracking
patient status. It typically will operate for 100 hours continuously between battery replacements. The 8500A requires
no routine calibration or maintenance.

The 8500A determines arterial oxyhemoglobin saturation (%SpO2) by measuring the absorption of red and infrared light
passed through tissue. Changes in absorption caused by pulsation of blood in the vascular bed are used to determine
arterial saturation and pulse rate.

Oxygen saturation and pulse rate are displayed on light emitting diode (LED) digital displays. On each detected pulse,
the perfusion LED flashes. Patient perfusion signals are graded as good, marginal or inadequate and are indicated as
such by the LED flashing green, yellow, or red. This simple method gives the user a pulse-by-pulse visual indication of
waveform signal quality without requiring the user to perform complex w aveform analy sis during critical patient care
situations.

Sensor disconnect or malfunction is indicated by lack of good perfusion flashes and/or a dash to the upper left of the

value on the LED display. Ultimately, if adequate perfusion pulses are not received, the SpO2 and Pulse Rate (♥

SpO

2

) numerical values will be replaced by dashes. When the batteries are low, the digital displays w ill blink.
The 8500 Pulse Oximeter may be used with all NONIN pulse oximeter sensors (except fiber optic) enabling proper

operation for nearly every patient.

NOTE: Nonin sensors do not contain natural rubber latex. Natural rubber latex has been found to caus e

allergic reactions in some individuals.

4

Operating Instructions

A. Batteries

Caution:

• Do not remove any covers other than the battery cover w hen battery replacement is necessary . There are no user
serviceable parts inside other than the replaceable batteries.

• Alkaline batteries may leak or explode if used or disposed of improperly.

• Do not use different types of batteries at the same time. In addition, do not mix fully charged and partially charged

cells at the same time. These actions may cause the batteries to leak.

The 8500A Hand Held Pulse Oximeter is powered by 6 AA Alkaline cells that will typically provide 100 hours of
continuous operation. The 8500A indicates when the batteries are low by flashing the digital displays once each
second. When the displays begin flashing, the batteries should be replaced as soon as possible. Replace the
batteries by removing the battery door on the back of the 8500A. Be sure to follow the polarity markings on the rear
label of the pulse oximeter when installing new batteries. Refer to Figure I for an illustration of battery replacement.

Rechargeable Nickel Cadmium batteries may be used in the 8500A if desired. Since NiCad batteries have less than
half the capacity of alkaline batteries, the batteries will have to be recharged more often than every 100 hours.

NOTE:

NOTE:

Replacing batteries erases the clock settings of the 8500A. The memory of the 8500MA will also be erased
when the batteries are replaced. These settings should be reset after the batteries are replaced.

Batteries should be removed if the 8500A is going to be stored for more than 30 days. Batteries may leak if left in
the device for a long period of time.

Figure I: Replacing Batteries in the 8500A

5

B. General

The 8500A Hand Held Pulse Oximeter is portable and is intended for attended patient monitoring by trained personnel.
It displays numerical values for oxygen saturation and pulse rate.

1. Connect Sensors

Connect the sensor to its 9-pin mating jack on the top of the 8500A as shown in Figure II. If additional cable length is
necessary, connect the Model 8500I Patient Cable between the sensor and the 8500A Hand Held Pulse Oximeter.
Position the appropriate sensor on the patient.

Figure II: Connecting Sensors to the 8500A

2. Turn on the Pulse Oximeter

Turn on the 8500A Hand Held Pulse Oximeter by pressing the "⎮" switch on the front of the pulse oximeter. Refer to
Figure III.

When the 8500A is powered on, the SpO2 and ♥ displays will cycle through the follow ing sequence before display ing
valid data values:

•

"

•

current time

•

software revision number

•

" - - "

"

6

Figure III: Front View of the 8500A

Figure IV: Rear View of the 8500A

7

3. Verify Operation

Caution:

• The 8500A must be able to measure the pulse properly to obtain accurate SpO2 measurement. Verify that nothing is
hindering the pulse measurement before relying on the SpO2 measurement.

Verify that the sensor is properly positioned. Ensure the system is sensing adequate perfusion by observing that the

indicator is blinking green, and the blinking is correlated to the pulse rate for 10 seconds. Should the perfusion

light be red or yellow or flashing erratically, reposition the sensor or try a different sensor.
If the alarm is not disabled, the Alarm Active Indicator will flicker for the first 2 minutes of operation. This indicates that

the alarm is enabled, but the audible alarm is temporarily disabled when powered on. During this time, the "⎮" switch
may be pressed to enable the audible alarm. After the 2 minute power on period is completed or the "⎮" switch has
been pressed, the Alarm Active Indicator will be continuously illuminated and the audible alarm will be enabled.

If the alarm is disabled, the Alarm Active Indicator will not illuminate, and pressing the "⎮" switch w ill not affect the
operation of the 8500A.

4. Cleaning the Pulse Oximeter

Caution:

• Do not immerse the 8500A in liquid to clean.

• Do not use caustic or abrasive cleaning agents.

The 8500A Hand Held Pulse Oximeter may be cleaned with a mild detergent and a soft cloth or with an isopropyl
alcohol wipe. Allow enough time for the 8500A to dry thoroughly before reusing.

8

Features

A. Controls

All functions of the 8500A are controlled by switches found on the front of the unit. Refer to Figure III for an illustration
of these switches.

1. Power

Pressing the ON switch ("⎮") causes power to be applied to all internal circuitry . Pressing the OFF sw itch ("∅") causes
power to be removed from the displays and puts the oximetry circuitry into a low pow er standby mode.

In order to conserve battery life, the 8500A will automatically pow er off after 10 minutes of inactivity . Inactivity is
indicated by dashes on the displays and is caused by:

• no sensor connected to the pulse oximeter

• patient pulse too low

• sensor not attached to a patient

Each time a reading is displayed, the 10 minute timer is restarted.
The "⎮" switch has additional alarm, printer, clock, and calendar mode setting functions when used in conjunction w ith

the "×" switch.

2. Setup Mode

Setup mode is used to control the alarms, internal time-of-day clock and calendar, and the external real-time printer
(purchased separately). The setup mode is initiated by holding the "×" switch when the unit is turned on by pressing
the "⎮" switch. In setup mode, the "⎮" sw itch and the "×" sw itch are used to make the selections.

Advance to the next sequential mode by pressing the "⎮" switch. Each time the "×" sw itch is pressed, the number on
the ♥ display will increment. It starts w i th the current value stored in memory for the parameter designated in the
SpO

display. When the correct value appears in the ♥ display, pressing the "⎮" switch will advance the SpO

2

to the next sequential parameter as listed in Table I. This process is continued until all parameters are set. The
settings can be easily checked, since the first value displayed for each parameter represents the current setting. When
the setting sequence has been completed, the 8500A exits the setup mode and begins normal operation.

Appears in Range of Default

Parameter

Alarm mode

High SpO

Low SpO

High Pulse Rate limit

Low Pulse Rate limit

2

2

Printer

Year

Month

Day

Hours

Minutes

limit

limit

♥ Display

Values Value

, ,

(OFF)
0 (OFF),
80 - 100
0 (OFF),

50 - 95

0 (OFF),

75 - 275 1

0 (OFF),
30 - 110

00 - 15 00
00 - 99 94

00 - 12 00
01 - 31 01
00 - 23 00
00 - 59 00

OFF
80%

200 BPM

50 BPM

ON

display

2

1

The high pulse rate limit value increments by 5, while all other parameters are incremented in steps of 1.

Table I: Alarm, Printer, Calendar, and Clock Mode Parameters

9

a. Alarm Settings

Once setup mode is initiated, " " will appear in the SpO2 display indicating the alarm settings. There are three
options for the alarm settings: default ("

display. Refer to Figure V for a flow chart of setting the alarms. When the alarm setting sequence has been
completed, the 8500A continues to the printer settings.

NOTE:

When the 8500A is powered on, it resets to the default alarm settings unless the user specifies to recall
parameters in the Setup mode each time the unit is powered on.

SpO

2

Display

"), recall (" "), or OFF (" "). These options appear in the ♥

Display

Setup
Mode

Default

Settings

Press

Alarms are

ON

Default

alarm

settings

Press

Press

Press

Press

Press

Press

Press

Press

Press

Modify

settings

Recall

Settings

Press

Alarms are
ON or OFF

depending on

previous setting

Press

Recall last

non-default

user-defined

settings

Press

Press

Press

Alarms

Off

Set
alarms
to OFF

Press

Proceed to

printer setup

Figure V: Flow Chart for Setting Alarms

10

b. Printer Settings

* NOTE:

After the alarm settings have been determined in the setup mode, "
setup mode. There are 16 options for the printer mode: 00 through 15. Each printer mode is explained in Table II. The
modes determine how often data is written out to the printer and the format of data written to the printer. Refer to Figure
VI for a flow chart of setting the printer mode. When the printer setting sequence has been completed, the 8500A
continues to the calendar settings (refer to Calendar Settings section).

WARNING: The use of the 8500P may result in increased emission and/or decreased immunity of this device.

The 8500P prints out real-time data only. Data stored in the 8500MA can not be downloaded to the 8500P.

" will appear in the SpO2 display indicating print

SpO

2

Display

Display

Setup
Mode

Default
Setting

Press

Press

Press

Proceed to

calendar setup

Increment

printer

mode

Press

Figure VI: Flow Chart for Setting Printer Mode

Printer

Mode

Seconds per

data point

SpO2 printed?*

Minimum

Touch print

capability?**

00 10 No Yes
01 30 No Yes
02 120 No Yes
03 10 Yes Yes
04 30 Yes Yes
05 120 Yes Yes
15 --- No Yes

* For modes where the minimum SpO2 data is written, there are two lines of data written for each data output.
The first line contains the minimum value for SpO2 since the last printout, and the second line contains the
current data values.

** The touch print mode enables the user to print out data at any time. This is activated by pressing the "⎮"
switch.

* NOTE:

Table II: 8500P Printer Modes

Printer modes 06 - 14 are not used at this time. They are reserved for future development.

11

c. Calendar Settings

After the printer setting has been determined in the setup mode, "
setup mode for the year. The year may be set to "00" through "99". After selecting the year, the display w ill show "

indicating the setup mode for the month. The month may be set to "00" through "12". After selecting the month, the
display will show "

" indicating the setup mode for the day of the month. The day may be set to "01" through "31".
Refer to Figure VII for a flow chart of setting the calendar. When the calendar setting sequence has been completed,
the 8500A continues to the clock settings (refer to Clock Settings section).

* NOTE:

Setting the month to "00" disables the clock function and helps conserve battery life.

SpO

2

Display

" will appear in the SpO2 display indicating calendar

Display

"

Setup

Mode

Proceed to

clock

settings

Default
Setting

Press

Press

Press

Press

Increment

Press

Press

Increment

month

Press

Press

Increment

Press

Proceed to

calendar setup

Press

year

Press

Press

day

Figure VII: Flow Chart for Setting Calendar

12

d. Clock Settings

After the calendar settings have been determined in the setup mode, " " will appear in the SpO2 display indicating
clock setup mode for the hour. The hour may be set to "00" through "23". After selecting the hour, the display will show

" " indicating the setup mode for the minutes. The minutes may be set to "00" through "59". After selecting the
minutes, the display will flash the settings for the alarms and will then return to normal operation. Refer to Figure VIII for
a flow chart of setting the clock.

SpO

2

Display

Display

Setup

Mode

Figure VIII: Flow Chart for Setting Clock

3. Alarms Indicated On Demand

Default
Setting

Press

Press

Press

Increment

hour

Press

Press

Increment

minute

Press

Proceed to

cycle through

alarm settings

Press

Press

The set points of the adjustable alarms may be displayed upon demand at any time during operation of the 8500A
oximeter, either when SpO
switch while holding the "×" sw itch depressed. This w ill cause the current settings of the four alarms - SpO
SpO

low limit, pulse rate high limit, and pulse rate low limit - to be displayed in the same format and order as during

2

clock set. Each alarm set point is displayed for approximately three seconds. If the alarms are OFF, then "
displayed for settings.

and Pulse Rate values are being displayed, or when the unit is out-of-track. Press the "⎮"

2

13

high limit,

2

" will be

B. Displays

1. Visual Indicators

a. SpO2 Display

The left digital display is a 3-digit light emitting diode (LED) digital display that displays oxygen saturation percentage.

b. ♥ (Pulse Rate) Display

The right digital display is a 3-digit LED digital display that displays pulse rate in pulses per minute.

c. (Perfusion) Indicator

The perfusion indicator (identified by the waveform symbol
oxygen saturation. The perfusion indicator changes color to indicate changes in the pulse waveform signal that may
affect the SpO

data.

2

The perfusion indicator may blink one of three colors: green, yellow, or red:

• Red indicates the pulse amplitude is too small. During red perfusion, SpO
not updated. After approximately twenty seconds, the values are replaced w ith dashes indicating
SpO

measurement is not possible.

2

• Yellow indicates the pulse waveform amplitude is marginal or the pulse oximeter has detected
artifact. Although SpO2 data is acceptable, corrective measures should be considered to improve
sensor placement, change sensor type, or reduce patient movement.

• Green indicates the pulse waveform signal is of good quality and SpO2 data is accurate.

Caution:

• The 8500A may interpret motion artifact of sufficient amplitude and regularity as good perfusion (green).

will flash once for each pulse while measuring

and pulse rate values are

2

14

d. Flashing or Flickering Displays

♥ Display

If the patient's pulse rate is equal to or goes beyond the set limits for pulse rate, the ♥ display flickers until the
alarm condition concludes.

SpO

Display

2

If the patient's SpO2 is equal to or goes beyond the set limits for SpO2, the SpO
condition concludes.

♥ and SpO2 Display

display flickers until the alarm

2

If both the SpO2 and ♥ displays flicker, the pulse rate and SpO2 values are both equal to or go beyond their set
limits.

If both the SpO2 and ♥ displays flash at once per second, the batteries are low and need to be replaced. Replace
all six batteries. Refer to Figure I: Replacing batteries in the 8500A.

NOTE:

e. (Alarm Active) Indicator

Inaccurate SpO2 and/or pulse rate measurement may result if the 8500A is operated in a low battery condition.

• The Alarm Active Indicator continuously illuminated indicates audible alarms are enabled. (See Figure IX)

• The Alarm Active Indicator not illuminated indicates audible alarms are disabled. (See Figure IX)

• The Alarm Active Indicator flickers when the audible alarms are temporarily disabled.

Figure IX: Sensor Disconnect and Alarm Active Indicators

15

f. Dash in SpO2 Display

If the 8500A determines that a sensor fault exists (sensor disconnect, sensor failure, or sensor dislodgment), a dash (-)
appears in the upper left-most digit of the SpO2 display (refer to Figure IX). The readings that are displayed remain
unchanged while the sensor fault exists. If the sensor fault is not corrected, a dash will be display ed in both the SpO
and ♥ displays 10 seconds after the sensor disconnect indicator appears.

2

2. Audible Indicators

Caution:

• The audible alarm of the 8500A is for the convenience of the attendant near the patient. It is not intended to call an
attendant from another room or from a distance. The user must determine the audible distance based on the
operating environment.

a. Audible Alarm

• During operation, pressing the "⎮" switch disables audible alarms for 2 minutes (includes during power up).

• Pressing the "⎮" switch during the 2-minute disabled period immediately enables the audible alarm.

• When enabled, the audible alarm sounds once per second for all patient alarms: high SpO

heart rate, low heart rate, and low perfusion.

• When enabled, the audible alarm sounds steadily for equipment alarms: sensor alarm and low battery.

b. Audible Heart Beat

• During operation, pressing the "×" switch toggles the audible heart beat status ON or OFF.

• When enabled, the 8500A will sound once for each heart beat detected.

• The audible heart beat is disabled when batteries are installed.

• Each time the 8500A is turned on, the audible heart beat will default to the previously selected mode (audible

heart beat ON or OFF).

, low SpO2, high

2

16

C. Printer/Serial Output

Both the 8500A and 8500MA Pulse Oximeters provide output capability to a custom printer via the 9-pin Sub-D
connector. This connector serves as a sensor input connector as well as a printer interconnect device. The 9-pin Sub­D connector pin assignments are listed in Table III.

Pin Number Assignment

1 Battery Voltage
2 Infrared Anode, Red Cathode
3 Infrared Cathode, Red Anode
4 Serial Data, TTL Levels
5 Detector Anode
6 Logic Level
7 Cable Shield
8 Coaxial Shield
9 Detector Cathode, +5 V

Table III: Printer/Sensor Interface Assignments

The information from the 8500A in the real-time mode is sent in an ASCII serial format at 9600 baud with 9 data bits, 1
start bit, and 1 stop bit. The data is output at a rate of once per second.

* NOTE:

The data printed by the 8500P printer is in the following format:

where "HH" represents the hour the real-time clock is set to, "MM" represents the minutes, "SS" represents the
seconds, "XXX" represents the SpO
displayed as "---" if there is no data available for the data reading.

WARNING: The use of the 8500P may result in increased emission and/or decreased immunity of this device.

The 9th data bit is used for parity in memory playback mode. In real-time mode, it is always set to the mark
condition. Therefore the real-time data may be read as 8 data bits, no parity.

HH:MM:SS SPO

=XXX HR=YYY

2

value, and "YYY" represents the pulse rate. The SpO2 and pulse rate will be

2

17

D. Memory Option (8500MA Only)

The memory option is identified by the "M" in the model number (i.e. 8500MA as opposed to the 8500A). This model
number is located just above the serial number on the back of the unit. The 8500MA Hand Held Pulse Oximeter can
collect and store up to eighteen hours of SpO
transfers the data to the 8586 Printer Interface unit where it can be printed on an Epson®-compatible graphics printer
(parallel version).

The solid-state memory in the 8500MA functions much like the "endless loop" tapes that are used in some telephone
answering machines. When the memory fills up, the unit begins overwriting the oldest locations w ith the latest data.

Each time the 8500MA is powered up, the current time/date information (if the clock is set properly) is stored in memory
to allow quick differentiation of recording sessions. Patient SpO
seconds. The stored resolution of the oxygen saturation is in 1% increments in the range of 0 to 100%. The stored
pulse rate ranges from 18 to 300 BPM. The stored values have a resolution of 1 BPM from 18 to 200 and a resolution
of 2 BPM from 201 to 300.

During the printing of the data, the last data recorded is the first data printed. For example, the last four minutes of data
recorded would be the first four minutes of printout.

1. Recording Sessions

Each time the 8500MA is turned on (except while setting the clock) data is automatically collected.

NOTE:

Only recording sessions greater than one minute in length are kept in memory for later printing.

2. Memory Output Mode

To output the data stored in the memory of the 8500MA, start with the unit OFF and then:

1) Hold the "×" switch while pressing the "⎮" switch;

2) Release the "×" and "⎮" switches when "

3) Observe " " will be displayed in the SpO2 and ♥ LEDs;

4) Data is automatically transferred from the memory.

Data is transferred at a rate of 20 minutes of collected data per second. An 18-hour recording session (the maximum
memory saved) is transferred in approximately 1 minute. After all the data is transferred, the 8500M should be shut off
prior to collecting new patient data. The patient information is held in memory as long as the batteries are good, so if the
memory has to be cleared, remove the batteries for a period of 60 seconds or longer. Outputting the memory does not
clear any data from the memory.

NOTE:

The format of the data transferred is given in Table IV. The size of this file will depend on the amount of data saved in
the memory. The most recent data is transferred first. The memory data format is in binary. Bad data is represented
by FF (hexadecimal) or 255 (decimal). If the memory "wrapped around" (the recording time exceeded 18 hours) and
the final (i.e. the oldest) file of data has been truncated, the final start time will be represented by zeroes and the start
times for that file will then not match up.

The memory is cleared each time the batteries are changed.

and pulse rate information. An infrared optical link or 8500YC cable

2

and pulse rate are sampled and stored every four

2

" is displayed in the SpO2 and ♥ LEDs;

18

E. Cleaning the Sensors

Caution:

• Do not immerse the sensors in liquid to clean.

• Do not use caustic or abrasive cleaning agents.

Carefully clean the NONIN reusable sensors with an isopropyl alcohol wipe and ensure that all tape residue is removed.
Allow enough time for the sensor to dry thoroughly before reusing. The sensors may be sterilized using ethylene oxide
(EtO) (cold cycle).

F. Sensor Compatibility

Caution:

• Use only NONIN manufactured sensors. These sensors are manufactured to meet the calibration requirements for
NONIN Pulse Oximeters.

The 8500A is compatible with all NONIN manufactured sensors (except the Fiber Optic sensors).

19

Specifications

1. Oxygen Saturation
Range (SpO2)

2. Pulse Rate Range

3. Displays
Patient Indicator
Digital Displays

4. Measurement Wavelengths

Red
Infrared

5. Accuracy
SpO2

(± 1 Standard Deviation)♦

Pulse Rate

6. Alarm Ranges

High SpO2 limit
Low SpO2 limit
High pulse rate limit

Low pulse rate limit

7. Alarm Volume

8. Temperature

Operating
Non-operating

9. Humidity

Operating
Non-operating

10. Power Requirements

11. Dimensions

12. Weight

♦

Standard Deviation is a statistical measure: up to 32% of the readings may fall outside these limits.

0 to 100%

18 to 300 Pulses Per Minute

Perfusion LED
3-digit 7-segment LEDs

660 nanometers
910 nanometers

70 - 100% ± 2 digits for adults using the Finger Clip Sensors

70 - 95% ± 3 digits for neonates using infant or neonatal sensors
70 - 100% ± 3 digits for adults using Flex or Reflectance Sensors
70 - 100% ± 4 digits using Ear Clip Sensor
Below 70% is not specified for all sensors
± 3% ± 1 digits

80 – 100 %, OFF default: OFF
50 – 95 %, OFF default: 80 %
75 – 275 BPM, OFF (increments of 5)

default: 200 BPM
30 – 100 BPM, OFF default: 50 BPM
70 dbA at 1 ft. (30 cm)

-20 to +50 °C

-30 to +50 °C

10 to 90% non-condensing
10 to 95% non-condensing

6 AA alkaline batteries; 100 hours typical operation
3" wide x 6" high x 1" deep

8 cm x 15 cm x 2 cm
10 oz. (280 g) with batteries

20

Service

Caution:

• 8500A Pulse Oximeters are sensitive and must be repaired by knowledgeable and specially trained personnel only.
Any sign or evidence of opening the system, field service by non-NONIN personnel, tampering, or any kind of misuse
or abuse of the system, shall void the warranty in its entirety.

The solid state circuitry within the 8500A Hand Held Pulse Oximeter requires no periodic maintenance or calibration
other than battery replacement.

NONIN does not recommend field repair of the 8500A Hand Held Pulse Oximeter. The circuit board in the 8500A
is a multi-layer board using traces 0.01" wide. Due to the very small trace size, extreme care must be used w hen
replacing components to prevent permanent non-repairable damage to the circuit board. Most components are
surface-mounted and require special hot air jet soldering and desoldering equipment. After any repairs are made, the
pulse oximeter must be tested to ensure correct operation.

NOTE:

All non-warranty work shall be done according to NONIN standard rates and charges in effect at the time of delivery to
NONIN. All repairs include a complete retest of the pulse oximeter using factory test fixtures.

All repair work on the 8500A Hand Held Pulse Oximeter should be done by trained NONIN personnel. For
NONIN Customer Support contact:

Nonin Medical, Inc.

st

13700 1
Plymouth, Minnesota 55441-5443

[phone]
[phone] (USA and Canada only)
FAX: [phone]

Avenue North

21

Warranty

NONIN MEDICAL, INCORPORATED, (NONIN) warrants to the purchaser, for a period of three years from the date
of purchase, each system exclusive of sensors, cables, and batteries. (Refer to the individual package inserts for
specific warranty information for sensors, cables, and other accessories.) NONIN shall repair or replace any systems
found to be defective in accordance with this warranty, free of charge, for which NONIN has been notified by the
purchaser by serial number that there is a defect, provided said notification occurs within the applicable warranty
period. This warranty shall be the sole and exclusive remedy by the purchaser hereunder for any systems or
accessories delivered to the purchaser which are found to be defective in any manner whether such remedies be in
contract, tort, or by law.

This warranty excludes cost of delivery to and from NONIN. All repaired units shall be received by the purchaser at
NONIN's place of business. NONIN reserves the right to charge a fee for a warranty repair request on any device
that is found to be within specifications.

These are precision electronic instruments and must be repaired by knowledgeable and specially trained NONIN
personnel only. Accordingly, any evidence of opening the system, field service by non-NONIN personnel, tampering,
or any kind of system misuse or abuse shall void the warranty in its entirety.

All non-warranty work shall be done according to NONIN standard rates and charges in effect at the time of delivery
to NONIN.

DISCLAIMER/EXCLUSIVITY OF WARRANTY

THE EXPRESS WARRANTIES SET FORTH IN THIS MANUAL ARE EXCLUSIVE, AND NO OTHER
WARRANTIES OF ANY KIND, WHETHER STATUTORY, WRITTEN, ORAL, OR IMPLIED, INCLUDING
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, SHALL APPLY.

22

Accessories

The following NONIN accessories function with the 8500A and 8500MA Hand Held Pulse Oximeter:

Model Description

Pulse Oximeter Reusable Sensors

8000AA-1 Adult Articulated Finger Clip Sensor (1 meter)
8000AA-2 Adult Articulated Finger Clip Sensor (2 meters)
8000AA-3 Adult Articulated Finger Clip Sensor (3 meters)
8000AP Pediatric Finger Clip Sensor (1 meter)
8000AP-3 Pediatric Finger Clip Sensor (3 meters)
8000J Adult Flex Sensor
8000J-3 Adult Flex Sensor (3 meters)
8008J Infant Flex Sensor
8001J Neonatal Flex Sensor
8000Q Ear Clip Sensor
8000R Reflectance Sensor

7000A Adult Finger Flexi-Form
7000P Pediatric Finger Flexi-Form
7000I Infant Toe Flexi-Form
7000N Neonatal Foot Flexi-Form
7000D Flexi-Form

Pulse Oximeter Disposable Sensors

®

Sensor Assortment Pack, 10 per box

®

II Sensor, 10 per box

®

II Sensor, 10 per box

®

II Sensor, 10 per box

®

II Sensor, 10 per box

Accessories

8000JFW Adult FlexiWrap, 8000JFW, bag of 25
8001JFW Neonatal FlexiWrap, 8001JFW, bag of 25
8008JFW Infant FlexiWrap, 8008JFW, bag of 25
8000H Reflectance Senso r Holder System
8000S Patient Simulator
UNI-EXT-1 Extension Cable (3 feet/1 meter)
UNI-EXT-3 Extension Cable (10 feet/3 meters)
UNI-EXT-6 Extension Cable (20 feet/6 meters)
UNI-EXT-9 Extension Cable (30 feet/9 meters)
UNI-RA-0 Right Angle Connector (6 inches/0.15 meters)
UNI-RA-3 Right Angle Connector (10 feet/3 meters)
NiMHBC-NA Nickel metal hydride battery charger with 12 AA NiMH batteries
NiMHBC-

Nickel metal hydride battery charger with 12 AA NiMH batteries
UNIV
NiMHB 1800 mAH NiMH, 6 AA batteries for use with NiMHBC-NA and -UNIV
HHCC Handheld carrying case, 8500/9840, black, holds 8500/9840 monitor, sensor, and airway

adapter tubes
8500P Attachable printer—8500/9840-series (Real-time pulse oximetry data)
8500PAP Thermal Printer Paper (package of 20 rolls)
8500PCC Carrying case for 8500, 8500P, and accessories (blue)
8500TS Tabletop stand
8500CC-B Carrying Case – Black
8500MB Mounting Bracket (Wall or Pole Mount System)
1000MC Memory Transfer Cable (for use with PC)
1000RTC Serial cable, memory or real-time (may be used for real-time interface to a PC; however,

this application is not supported by nVISION software).
8500RB Rubber Bumper
nVISION nVISION Data Management Software for oximetry screening (CD-ROM)

For more information about NONIN parts and accessories contact your distributor, or contact NONIN at [phone]
(USA and Canada) or [phone].

23

Troubleshooting Guide

Symptom Possible Cause Possible Solution

8500A will not power up Batteries are completely
Incorrect battery installation Verify battery sequence. Refer to Figure I: Replacing Batteries in the

Numeric displays are
blinking at once per
second
Incorrect battery installation Verify battery sequence. Refer to Figure I: Replacing Batteries in the

SpO2 or pulse rate alarm

Dash appears in upper left
of SpO2 display

Displayed pulse rate does
not correlate to pulse rate
displayed on ECG monitor

Patient may have an

Non-NONIN sensor is being
ECG monitor may not be

Erratic ♥ display and/or
yellow perfusion LED
during concurrent use of
electrosurgical equipment
(ESU)

Perfusion is blinking yellow
with each pulse

Unable to obtain green
perfusion
Sensor site poorly perfused
Sensor not correctly positioned
Sensor attached too tightly or

Circulation reduced due to

Excessive ambient light Reduce ambient light
Excessive patient motion Reduce patient motion
Sensor applied to a polished

Interference from:

depleted

Battery voltage is low Replace all six batteries of the 8500A

condition exists
Sensor fault exists. Sensor

may have become dislodged
from 8500A or from the patient

Excessive motion at sensor
site may be prohibiting the
8500A from acquiring a
consistent pulse signal

arrhythmia resulting in some
heart beats that do not yield a
perfusion signal at sensor
sight

used
functioning properly

ESU may be interfering with
oximeter performance

Perfusion signal at sensor site
is marginal

Low patient pulse strength Reposition sensor on patient

tape or other items are
restricting perfusion at sensor
site

excess pressure between the
sensor and a hard surface

fingernail

•

arterial catheter

•

blood pressure cuff

•

electrosurgical procedure

•

infusion line

Replace all six batteries of the 8500A

8500A

8500A
Examine the patient:
Patient may need medical attention

Verify sensor is connected to the 8500A and the patient correctly; Try a
new sensor if condition persists

Eliminate or reduce cause of motion artifact
sensor site where motion is not present

Examine the patient:
Condition may persist even though both monitors are functioning
properly if patient's arrhythmia persists

Replace sensor with a NONIN sensor
Examine the patient:

replace ECG monitor
Examine the patient:

move oximeter, cables, and sensor as far away from ESU as possible
refer to the ESU operator's manual

Examine the patient:
Reposition sensor

Reapply sensor, select alternate sensor site, or remove restrictive
material from sensor site

Allow sensor and finger to rest comfortably on surface

Remove fingernail polish
Reduce or eliminate interference

or refer to operator's manual for ECG monitor

or select alternate sensor site

or reposition sensor to new

or

24

Troubleshooting Guide (Continued)

Symptom Possible Cause Possible Solution

Segments of SpO2 or
♥ display are missing

Perfusion LED is
blinking red and SpO2
and ♥ displays show
dashes Excessive motion at sensor

Alarm going
continuously but SpO2
and pulse rate are
within alarm limits

Printer not printing out
after changing

mode

Defective LED displays Displayed values may not be reliable; discontinue use of 8500A

Inadequate perfusion signal at
sensor site

site may be prohibiting 8500A
from acquiring a consistent
pulse signal

Internal circuitry watchdog
failed

Printer mode did not get
updated internally

Examine the patient:
reposition sensor

Eliminate or reduce cause of motion artifact or reposition sensor to
sensor site where motion is not present

Reset 8500A by turning the unit OFF, wait a few seconds, and turn the
unit ON

Reset pulse oximeter by turning it off and then on

or select alternate sensor site

If any of these solutions do not correct the problem with your 8500A, please contact NONIN Customer Support at
[phone].

25