Respironics 920M PLUS Operator's Manual

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Operator’s Manual

920M

Handheld Pulse Oximeter

English/Español

PLUS

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

CAUTION: Federal law (USA) restricts this device to sale by or on

the order of a physician.

CAUTION: Read this entire manual carefully before using the 920M

PLUS Pulse Oximeter.

Respironics Georgia, Inc.

175 Chastain Meadows Court

Kennesaw, Georgia 30144

USA

(724) 387-4000

(800) 345-6443 (USA and Canada)

Fax (800) 886-0245 (USA and Canada)

www.respironics.com

References to “Respironics” in this manual shall imply Respironics, Inc. Respironics and 920M are registered trademarks of Respironics, Inc.

Finger Phantom, Flexi-Form, and FlexiWrap are registered trademarks or trademarks of Nonin Medical, Inc.

Windows is a registered trademark of Microsoft, Inc.

Guide to Symbols

Front Panel Symbols

Percent Oxygen Saturation

Pulse Rate

Pulse Quality (tricolor LED)

Low Battery

Front Panel Switches

On/Standby

Advance

Other Symbols

ATTENTION: See Instructions for Use

Not for Continuous Monitoring (No Alarm for SpO

)

Type BF Applied Part (Patient isolation from electrical shock)

UL Mark for Canada and the United States with respect to electric shock, fire, and

mechanical hazards only in accordance with UL 2601-1 and CAN/CSA C22.1 No. 601.1

Serial Number (located under the battery cover)

Table of Contents

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

Indications for Use ................................................... 3

General Description ................................................. 4

Basic Operation ....................................................... 6

Installing and Using the Batteries ............................ 6

Important Notes about Battery Use ........................ 7

Recharging Batteries (NiMH Battery Pack Only) .. 7

Connecting the Sensor ............................................... 8

Power On/Standby .................................................... 9

Power On Self-Test .................................................... 9

Monitoring ................................................................. 10

Cleaning the 920M PLUS Pulse Oximeter ........... 10

Detailed Operation .................................................11

Switches and Functions ........................................... 11

Displays and Indicators ........................................... 15

Communications .....................................................17

Serial Output ............................................................. 17

Memory ...................................................................... 17

Specifications .......................................................... 19

Service and Support ............................................... 20

Warranty ..................................................................21

Accessories ............................................................. 22

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

Precautions for Use

Contraindications

•

Do not use the 920M PLUS in an MRI environment.

• Do not use the 920M PLUS in situations where alarms are required. The

device has no alarms.

Warnings

Explosion hazard: Do not use the 920M PLUS in an explosive atmosphere.

•

• The 920M PLUS is intended only as an adjunct in patient assessment. It

must be used in conjunction with other methods of assessing clinical signs and symptoms.

• Use only Respironics compatible sensors, which are manufactured to meet

the accuracy specifications for Respironics pulse oximeters. Using other manufacturers’ sensors may cause improper pulse oximeter performance.

• As with all medical equipment, carefully route patient cabling to reduce the

possibility of patient entanglement or strangulation.

• Check the pulse oximeter sensor application site frequently to determine the

positioning of the sensor and the circulation and skin sensitivity of the patient. Each patient's sensitivity to Respironics sensors may vary depending on medical status or skin condition.

• Do not use adhesive tape strips if the patient exhibits an allergic reaction.

• Do not stretch the adhesive tape while applying the pulse oximeter sensor.

This may cause inaccurate readings or skin blisters.

• General operation of the 920M PLUS might be affected by the use of an

electrosurgical unit (ESU).

• Do not use a damaged sensor.

Cautions

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

•

physician.

• Before use, carefully read the package insert provided with the sensors.

• The 920M PLUS is intended for spot-checking or monitoring by an

attending healthcare professional. Because the 920M PLUS has no SpO alarms, international labeling requirements (EN 865) dictate it be labeled not for continuous monitoring, as indicated by the symbol.

• The 920M PLUS Pulse Oximeter is not an apnea monitor.

• Verify that all visible indicators illuminate during the startup (initialization)

sequence. If any indicator is not lit, do not use the 920M PLUS. Contact Respironics Customer Support for repair or replacement.

Precautions for Use 1

Cautions

• The 920M PLUS Pulse Oximeter must be able to measure the pulse

properly to obtain an accurate SpO hindering the pulse measurement before relying on the SpO

measurement. Verify that nothing is

measurement.

• Some nail polish colors (particularly dark shades) or artificial nails may

reduce light transmission and affect SpO or artificial nails before using the 920M PLUS.

accuracy. Remove any nail polish

• The 920M PLUS may not work on all patients. If you are unable to achieve

stable readings, discontinue use.

• The 920M PLUS may misinterpret motion as good pulse quality. Minimize

patient motion as much as possible.

• The 920M PLUS Pulse Oximeter is designed to determine the percentage

of arterial oxygen saturation of functional hemoglobin. Significant levels of dysfunctional hemoglobin may affect the accuracy of the measurement.

• Cardiogreen and other intravascular dyes, depending on the concentration,

may affect the accuracy of the SpO

measurement.

• Ear Clip sensors are not recommended for pediatric or neonatal use; their

accuracy of these sensors has not been established.

• Do not immerse the 920M PLUS or Respironics sensors in liquid.

• Do not use caustic or abrasive cleaning agents on the device or sensors.

• The 920M PLUS Pulse Oximeter is a precision electronic instrument and

must be repaired by trained Respironics-designated personnel only.

• Do not use different types of batteries at the same time, and do not mix

fully charged and partially charged batteries at the same time.

• Do not remove any covers (except the battery cover) when replacing

batteries. There are no user-serviceable parts inside other than the replaceable batteries.

• Follow local ordinances and recycling instructions regarding disposal or

recycling of the device and device components, including batteries.

• Batteries may leak or explode if used or disposed of improperly.

• Remove the batteries to avoid the risk of leakage if the 920M PLUS is going

to be stored for more than one month.

• This equipment complies with International Standard EN 60601-1-2:1993

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 (for example cellular phones, mobile two-way radios, electrical appliances), it is possible that high levels of such interference due to close proximity or strength of a source may result in disruption of performance of this device.

2 Precautions for Use

Indications for Use

The Respironics® 920M™ PLUS Handheld Pulse Oximeter is indicated for measuring and displaying functional oxygen saturation of arterial hemoglobin (SpO ambulatory, home, and EMS (emergency medical service) environments. The 920M PLUS is intended for spot-checking and/or continuous monitoring when attended by a trained healthcare professional.

) and pulse rate for adult, pediatric, and neonatal patients in hospital,

920M PLUS

&&& &&&

Figure 1. The Model 920M PLUS Pulse Oximeter.

Indications for Use 3

General Description

The 920M PLUS is a digital handheld pulse oximeter that displays numerical values for blood oxygen saturation and pulse rate (Figure 2).

The 920M PLUS operates for approximately 100 hours continuously between alkaline battery replacements, or for 45 hours with the Rechargeable NiMH (Nickel Metal Hydride) Battery Pack (optional). The 920M PLUS requires no routine calibration or maintenance other than replacement of alkaline batteries or recharging the optional battery pack using the Model 920MPC Charger Stand. (Refer to the Model 920MPC Operator’s Manual.)

Pulse Oximeter Sensor Connector

SpO2 Display (Percent Oxygen Saturation)

Pulse Rate Display

920M PLUS

&&& &&&

Pulse Quality Indicator (Tricolor)

Advance Switch

Low Battery Indicator

On / Standy Switch

Figure 2. 920M PLUS displays, indicators, and switches.

Oxygen saturation and pulse rate values are displayed by light-emitting diode (LED) digital displays. On each detected pulse, the pulse quality LED blinks. Patient pulse quality signals are graded as good, marginal, or inadequate and are indicated as such by the pulse quality indicator blinking green, yellow, or red, respectively. This simple method gives the user a pulse-by-pulse visual indication of waveform signal quality without requiring the user to perform complex waveform analysis.

The 920M PLUS features pulse oximeter sensors for a wide range of patient monitoring. Each sensor is designed for a specific site application and specific patient size and weight range. Refer to specific sensor instructional inserts for more detailed information about sensor use.

4 General Description

Because the 920M PLUS Handheld Pulse Oximeter has no patient alarms, frequent observation of SpO

and pulse rate displays is required.

A sensor disconnect or malfunction is indicated by a lack of good pulse quality blinking and/or a dash to the left of the SpO display. When adequate pulse signals are not received, the SpO

value on the LED

and/or pulse rate numerical values will be replaced by dashes. Low and critically low battery conditions will be indicated by the low battery LED.

4 X 1.5V AA

Battery Cover

RESPIRONICS GEORGIA, INC.

30EM

US2601-1

KENNESAW, GA USA

MODEL 920M PLUS

PULSE OXIMETER

2959-400 01

US PATENT # Re.33,643

"Contains NONIN Technology"

IEC LR6

Battery Cover Latch

Figure 3. Rear view of the 920M PLUS.

The 920M PLUS system includes the following items:

1 Model 920M PLUS Handheld Pulse Oximeter

1 Operator’s Manual

1 Respironics Pulse Oximeter Sensor

4 AA-Size Alkaline Batteries

Confirm that the items listed are packed with the 920M PLUS system. If any item on this list is missing or damaged, contact your distributor. Contact the carrier immediately if the shipping carton is damaged.

General Description 5

Basic Operation

Installing and Using the Batteries

The 920M PLUS Handheld Pulse Oximeter can be powered by 4 AA-size alkaline batteries (which will typically provide 100 hours of continuous operation), or by the optional Rechargeable NiMH Battery Pack. (See “Accessories” on page 22.) Respironics does not recommend the use of any other

battery types.

When the batteries are low, the low battery indicator (a yellow LED) will be steadily illuminated. (See Figure 2 on page 4.) Replace the batteries as soon as possible. When the batteries are critically low, the low battery indicator will flash and the pulse oximeter will not operate. The digital displays will go blank, and the pulse quality indicator will blink yellow or red, but not green. Replace the batteries immediately.

1. Press the battery cover latch (see Figure 3 on page 5), and remove the battery cover on the bottom of the 920M PLUS.

2. Insert four new AA-size alkaline batteries or a Rechargeable NiMH Battery Pack. Be sure to insert the batteries in the correct position, as indicated by the polarity markings (+ and -) inside the battery compartment. Refer to Figure 4 on page 8 for an illustration of correct battery orientation. Proper battery positioning is essential for correct operation.

3. Replace the battery cover and turn on the 920M PLUS. If the unit does not turn on, see “Troubleshooting Guide” on page 24.

6 Basic Operation

Important Notes about Battery Use

Four AA alkaline batteries provide the 920M PLUS with approximately 100 hours of continuous operation, while the Rechargeable NiMH Battery Pack provides the 920M PLUS with approximately 45 hours of continuous operation.

Clock/calendar settings can significantly affect battery storage life.

Batteries drain during storage, but they drain much more quickly when the unit’s clock/calendar functions are set. Refer to “Calendar and Clock Settings” on page 14 for more information.

With AA Batteries

If the clock/calendar is not set when the unit is stored, alkaline batteries will

•

need replacement in 10-12 months if the unit has not been used.

• If the clock/calendar is set when the unit is stored, alkaline batteries will

require replacement in about 6 weeks if the unit has not been used.

• Using the oximeter will shorten the required replacement time.

With Rechargeable NiMH Battery Pack

If the clock/calendar is not set when the unit is stored, the Rechargeable

•

NiMH Battery Pack will need recharging at least every 2 months if the unit has not been used.

• If the clock/calendar is set when the unit is stored, the Rechargeable NiMH

Battery Pack will need recharging at least every 3 weeks if the unit has not been used.

• Using the oximeter will shorten the required recharging time.

Recharging Batteries (NiMH Battery Pack Only)

• Completely recharging the NiMH battery pack requires approximately 90

minutes when the unit is completely discharged.

• The expected useful life of the Rechargeable NiMH battery pack is 500

charge/discharge cycles, or approximately 10 years, whichever is first. The battery pack must be charged at least once each year to maintain optimal battery life.

• AA alkaline batteries cannot be recharged in the charging stand.

Basic Operation 7

Note:

Battery Orientation

After removing batteries from the 920M PLUS, you will have approximately 2 minutes to replace them before losing data stored in memory and the clock and calendar settings. Replace the batteries immediately to avoid the loss of stored data.

Battery Pack

AA-size Alkaline Batteries

Figure 4. Installing batteries in the 920M PLUS.

Connecting the Sensor

Connect the pulse oximeter sensor to the top of the 920M PLUS as shown in Figure 5. Ensure that the sensor is firmly plugged in. Refer to the specific sensor package insert for pulse oximeter sensor positioning information.

Figure 5. Connecting a sensor to the 920M PLUS.

8 Basic Operation

Power On/Standby

Turn on the 920M PLUS by pressing and releasing the On/Standby switch . Turn off the unit by pressing and holding this switch for about 2 seconds. Refer to Figure 2 on page 4 for a detailed illustration of the switches and indicators. Refer to “Detailed Operation” on page 11 for detailed information about entering setup mode and on general operation of the 920M PLUS.

Power On Self-Test

When the 920M PLUS is powered on for normal operation by pressing and releasing the On/Standby switch , the unit will cycle through a startup (or initialization) sequence before displaying valid data values.

During a startup, always check for any missing indicators or LED display segments. If any indicator is not lit, do not use the 920M PLUS. Contact Respironics Customer Support for repair or replacement.

At normal startup (when not entering the setup mode), with fresh batteries, the 920M PLUS will cycle through the following sequence:

888

• will appear briefly in the SpO

888

and pulse rate displays

• the yellow low battery indicator will turn on steadily for a few seconds

• the pulse quality indicator will turn on red for 1 second, then green for 1

second, and then begin to blink

• the clock time currently set in the memory (in hours and minutes, for

example) appears briefly in the displays

• the software revision number (the letter “r” followed by a 3-digit number,

for example) appears briefly in the displays

018

• (two dashes) will appear in the displays until a valid pulse signal is

detected

Note: When entering setup mode at power on (for memory clear, calendar, or

clock settings), the 920M PLUS will cycle through a startup sequence similar to the above, with the following exceptions: 1) The pulse quality indicator will first turn on red for 1 second, then green for 1 second, but will then turn off and not blink until after exiting setup mode; 2) the software revision number will not appear; and 3) the two dashes will appear only after exiting setup mode.

04 41

Basic Operation 9

Monitoring

Verify that the pulse oximeter sensor is properly positioned (on a finger, for example). Ensure that the pulse oximeter is sensing adequate pulse quality by:

• verifying that the pulse quality indicator is blinking green and

• verifying that the pulse rate and SpO

displays are showing readings and

• verifying that the pulse quality indicator blinking is correlated to the pulse rate

for at least 10 seconds

If the pulse quality indicator light is blinking red or yellow or is blinking erratically, reposition the pulse oximeter sensor or try a different sensor.

If a finger, toe, etc., is not properly inserted into the pulse oximeter sensor, or no pulse oximeter sensor is attached to the pulse oximeter after startup (a few seconds after powering on), both the SpO a single dash until a valid pulse signal is detected.

and pulse rate displays will display

Cleaning the 920M PLUS Pulse Oximeter

Clean the 920M PLUS Pulse Oximeter separately from the sensors. For instructions on cleaning pulse oximeter sensors, refer to the respective pulse oximeter sensor package inserts.

Clean the 920M PLUS with a soft cloth dampened with isopropyl alcohol. Do not pour or spray any liquids onto the 920M PLUS, and do not allow any liquid to enter any openings in the device. Allow the 920M PLUS to dry thoroughly before reusing.

CAUTION: Do not immerse the 920M PLUS in liquid, and do not

use caustic or abrasive cleaning agents on the 920M PLUS.

10 Basic Operation

Detailed Operation

Switches and Functions

All functions of the 920M PLUS are controlled by the On/Standby and advance switches found on the front of the unit. Refer to Figure 2 on page 4 for an illustration of the switches and indicators.

Power

Turn on the 920M PLUS by presing and releasing the On/Standby switch on the front of the unit. Turn off the unit by pressing and holding this switch for about 2 seconds. Refer to “Power On Self-Test” on page 9 for important information about starting up the 920M PLUS.

In order to conserve battery life, the 920M PLUS will automatically power off after 10 minutes of inactivity. Inactivity is indicated by dashes on the displays and may be caused by the following conditions:

• the sensor is not connected to the pulse oximeter

• the sensor is not attached to the patient

• the patient pulse signal is inadequate

Setup Mode

Setup mode is used to set 1) the memory clear function, 2) the calendar and clock, and 3) the memory playback function. (To initiate the memory playback, refer to “Memory Playback” on page 18.) In setup mode, the advance switch and the On/Standby switch are used to make the selections.

Note: Setting the month to “00” disables the calendar and clock functions and

helps conserve battery life

Entering Setup Mode

1. With the unit off, press and hold the advance switch while pressing and then releasing the On/Standby switch .

2. Release the advance switch when is displayed on the SpO pulse rate displays. The clock time currently set in the memory, for example, appears briefly in the displays, and then appears.

888 888

Clr no

and

04 41

Detailed Operation 11

Making Selections in Setup Mode

1. Upon entering setup mode, the displays will show . (Memory clear

Clr no

and the default value “no”, the first setting.) Press and release the advance switch (or press and hold to quickly scroll) to change the value for this setting.

Note: The menu starts at the current value stored in memory for the setting.

The menu will cycle through the range of values for that setting.

2. When the desired value appears, press and release the On/Standby switch to store the value and advance to the next sequential setting (year, month, etc.).

3. Continue this process until all settings are chosen.

When the setting sequence has been completed, the 920M PLUS exits the setup mode and then displays

(two dashes). The unit is then ready

to begin normal operation.

Memory Clear, Calendar, and Clock Settings

Range of Values

Appears in

Setting

Memory Clear

Delete (confirm clear)

Year

Month

Day

Hour

Minute

(Not available)

Choosing “yes” for both the Clr and del settings (the memory clear function) will clear the memory and exit setup mode.

Prn settings 00 to 15 are not used at this time. Setting these values will

not affect the operation of the 920M PLUS.

SpO2 Display:

Clr yes or no no

del yes or no no

d 01 - 31 00

h 00

nn 00

Prn 00-15 00

Appears in Pulse Rate

- 99 00

00 - 12 00

Display:

- 23 00

- 59 00

Default Value

12 Detailed Operation

Clearing Memory

Upon entering setup mode, “Clr” will appear in the SpO2 display, indicating the memory clear function. (Refer to “Setup Mode” on page 11.) This function allows you to delete all data currently stored in memory. Refer to Figure 6 below for a diagram describing the memory clear settings.

To Choose Memory Clear Settings:

Clr” may be set to “no” or “yes”.

1. “

If “

no” is entered in response to “Clr” (indicating that you do not

want to clear the memory), the setup mode will continue directly to the calendar and clock settings. (Refer to “Calendar and Clock Settings” on page 14.)

yes” is entered in response to “Clr”, then “del” will next

If “ appear in the SpO

display, again with a choice of “no” or “yes”.

This redundant prompting gives you a second opportunity to avoid clearing the memory.

Make the “

Clr” selection. Use the advance switch to scroll through

the values. Use the On/Standby switch to accept a value and move to the next setting.

2. If “

no” is entered in response to “del”, the setup mode continues to

the calendar and clock settings.

yes” is entered in response to “del”, (confirming that you do

If “ want to clear the memory), then “

dne Clr” will briefly appear in the

displays indicating that the memory is cleared. The 920M PLUS will then exit setup mode and is ready to begin normal operation.

Make the “

Use the advance switch to scroll through the values.

Use the on/standby switch to accept a value and move to the next setting.

del” selection.

CLr

Clear the memory?

YES

del

Confirm "yes" to

clearing the memory?

YES

dne clr

(default)

Continue to the

calendar and clock

settings.

Continue to the

calendar and clock

settings.

Detailed Operation 13

Begin normal operation.

Figure 6. Choosing memory clear settings.

Calendar and Clock Settings

Note:

helps conserve battery life

Setting the month to “00” disables the calendar and clock functions and

Refer to Figure 7 below for a diagram describing the calendar and clock settings.

Choosing Calendar and Clock Settings:

1. After selecting “no” in the memory clear settings, “y” will appear in the SpO

display,

indicating the calendar year setting.

2. Make the year, month, day, hour, and minute selections. Use the

Use the advance switch to scroll through the values.

Use the on/standby switch to accept a value and move to the next setting.

CLr

Clear the memory?

del

Confirm clearing the memory?

(default)

Continue to the calendar and clock settings.

advance switch to scroll through the values. Use the On/Standby switch to accept a value and

Set the year, 00 through 99.

move to the next setting.

3. After selecting the minutes,

Prn” will appear in the SpO

“ display. However, the “

Prn”

setting is not used at this time.

Press and release the On/Standby switch to exit setup mode.

When the setting sequence has been completed, the 920M PLUS displays

(two dashes). The unit is then ready

Set the month, 00 through 12.

Set the day, 01 through 31.

Set the hour, 00 through 23.

Note: This is a 24-hour clock.

Set the minute, 00 through 59.

to begin normal operation.

14 Detailed Operation

prn

Setting not available.

Press and release the

on/standby switch to exit setup.

Begin normal operation.

Figure 7. Choosing calendar and clock settings.

Displays and Indicators

SpO2 Display

The SpO2 display is the upper numeric display. (Identified by the %SpO

symbol; see Figure 2 on page 4.) This 3-digit light-emitting diode (LED) display shows the current oxygen saturation percentage.

Pulse Rate Display

The pulse rate display is the lower numeric display. (Identified by the ♥ symbol; see Figure 2 on page 4.) This 3-digit LED display shows the pulse rate in pulses per minute.

Pulse Quality Indicator

The pulse quality indicator, a tricolor LED, blinks once for each detected pulse. (Identified by the symbol; see Figure 2 on page 4.) The pulse quality indicator changes color to indicate changes in the pulse waveform signal that may affect the SpO

data.

The pulse quality indicator may blink one of three colors: green, yellow, or red. These colors are similar to the colors of a stoplight:

• Green indicates that the pulse waveform signal is of good quality and the

and pulse rate data are accurate.

SpO

• Yellow indicates that the pulse waveform amplitude is marginal or that the

pulse oximeter has detected artifact. Although the SpO may be acceptable, corrective measures should be considered if the indicator continues to blink yellow frequently. To improve the signal quality, try repositioning the sensor, try a different sensor type, eliminate patient movement, or improve circulation at the site by massaging the area.

and pulse rate data

• Red indicates that the pulse waveform amplitude is inadequate. While the

pulse quality indicator is red, SpO updated). After approximately 20 seconds, the values are replaced with dashes indicating that SpO

CAUTION: The 920M PLUS might misinterpret motion as good

pulse quality. Minimize patient motion as much as possible.

Detailed Operation 15

and pulse rate values are frozen (not

and pulse rate measurements are not possible.

Low Battery Indicator

When the batteries are low, the low battery indicator, a yellow LED, will be steadily illuminated. (Identified by the symbol; see Figure 2 on page 4.) Replace the batteries as soon as possible.

When the batteries are critically low, the low battery indicator will flash and the pulse oximeter will not operate. The digital displays will go blank, and the pulse quality indicator will blink yellow or red, but not green. Replace the batteries immediately.

Sensor Fault Indication

If the 920M PLUS determines that a sensor fault exists (a sensor disconnect or dislodgment, or a sensor failure) or if a pulse oximeter sensor signal is no longer detected, a dash (-) appears in the left-most digit of the SpO The readings that are displayed will freeze for 10 seconds if the pulse oximeter sensor fault or the inadequate signal continues.

If the sensor fault or the inadequate signal is not corrected, the frozen readings and the left-most dash will be replaced by dashes in the middle digit of both

the SpO2 and the pulse rate displays, 10 seconds after the first dash

appeared.

display.

When the sensor fault or the inadequate signal is corrected, the SpO pulse rate displays will return to normal operation.

and

16 Detailed Operation

Communications

Serial Output

The 920M PLUS provides real-time data output capability via the pulse oximeter sensor connector (a 9-pin Sub-D connector). The pulse oximeter sensor connector pin assignments are listed below.

Pulse Oximeter Sensor Connector Pin Assignments

Pin Number

1 Battery Voltage

2 Infrared Anode, Red Cathode

3 Infrared Cathode, Red Anode

4 Serial Data, TTL Levels

5 Detector Anode

6 Sensor Type

7 Cable Shield (Ground)

8 Ground

9 Detector Cathode, +5 V

Assignment

The information from the 920M PLUS 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 are output at a rate of once per second.

Real-time data may be printed or displayed by devices other than the pulse oximeter. On power up a header is sent identifying the format and the time and date. Thereafter, the data are sent once per second by the 920M PLUS in the following format:

SPO2=XXX HR=YYY

where “XXX” represents the SpO rate. The SpO

and pulse rate will be displayed as “---” if there are no data

available for the data reading.

Memory

The 920M PLUS can collect and store up to 72 hours of SpO2 and pulse rate information. Data retrieval software is available for use with Microsoft Windows Respironics for options.

The memory in the 920M PLUS functions much like an “endless loop” tape. When the memory fills up, the unit begins overwriting the oldest data with the new data.

Communications 17

95/98/00 operating systems. Contact your distributor or

value and “YYY” represents the pulse

Each time the 920M PLUS is turned on, the current time/date information (if the clock is set properly) is stored in memory to allow quick differentiation of recording sessions. Patient SpO

and pulse rate are sampled and stored

every 4 seconds.

The oxygen saturation values are stored in 1% increments in the range of 0 to 100%. The stored pulse rate ranges from 18 to 300 pulses per minute. The stored values are in increments of 1 pulse per minute in the interval from 18 to 200 pulses per minute, and increments of 2 pulses per minute in the interval from 201 to 300 pulses per minute.

During data printing, the last data recorded are the first data printed. For example, the last 4 minutes of data recorded would be the first 4 minutes of printout.

Recording Sessions

Each time the 920M PLUS is turned on (except during setup mode) data are automatically collected in memory.

Note: Only recording sessions greater than 1 minute in length are stored in

memory, and memory will be cleared approximately 2 minutes after removing batteries. Replace batteries immediately to avoid losing stored data.

Memory Playback

Note: Playing back data in memory does not clear any data from memory.

Note: The keypad sequence for starting memory playback is identical to the

sequence used for entering setup mode.

Playing Back Data Stored in 920M PLUS Memory

1. With the unit off, press and hold the advance switch while pressing and then releasing the On/Standby switch .

2. Release the advance switch when is displayed on the SpO pulse rate displays. The clock time currently set in the memory ( for example) appears briefly in the displays, and then appears.

888 888

Clr no

3. Data will be automatically played back from the memory. Data are played back at a rate of 20 minutes of collected data per second. A 72-hour recording session (the maximum memory saved) is played back in approximately 3.5 minutes.

4. After all data are played back, the 920M PLUS should be shut off before collecting new patient data. The patient information is held in memory as long as the batteries are sufficiently charged, so if the memory must be cleared, use the memory clear function.

and

04 41

18 Communications

Specifications

920M PLUS Specifications

Oxygen Saturation Range (SpO2) 0 to 100%

Pulse Rate Range 18 to 300 Pulses Per Minute

Accuracy

(± 1 Standard Deviation)*70 - 100% ± 2 digits for adults using Finger Clip

SpO

Pulse Rate ± 3% ± 1 digit

Measurement Wavelengths and Output Power

Red 660 nanometers @ 3 mw nominal

Infrared 910 nanometers @ 3 mw nominal

Indicators

Pulse Quality Indicator LED, tricolor

Numeric Displays 3-digit 7-segment LEDs, red

Low Battery Indicator Dedicated icon, yellow

Temperature

Operating -20 to +50°C (-4 to +122°F)

Storage/Transportation -30 to +50°C (-22 to +122°F)

Humidity

Operating 10 to 90% noncondensing

Storage/Transportation 10 to 95% noncondensing

Altitude

Operating Altitude Up to 12,000 meters (40,000 feet)

Hyperbaric Pressure Up to 4 atmospheres

Power Requirements Four 1.5V AA-size alkaline batteries

Dimensions 13.8 cm H x 7.0 cm W x 3.2 cm D

Weight 210 g (7.4 oz) (with alkaline batteries)

Classifications per IEC 60601-1/CSA 601.1/UL 2601-1

Type of Protection Internally powered (on battery power)

Degree of Protection Type BF-Applied Part

Mode of Operation Continuous

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

Sensors

70 - 100% ± 3 digits for adults using Flex, Flexi-Form, or Reflectance Sensors

70 - 100% ± 4 digits using Ear Clip Sensors

70 - 95% ± 3 digits for neonates using infant or neonatal sensors

Below 70% is not specified for all sensors

(100 hours typical operation) or NiMH rechargeable battery pack (45 hours typical operation)

(5.4 in H x 2.8 in W x 1.3 in D)

230 g (8.1 oz) (with NiMH rechargeable battery pack)

Specifications 19

Service and Support

CAUTION: The 920M PLUS is a precision electronic instrument and

must be repaired by trained Respironics personnel only.

Note: Any sign or evidence of opening the system, field service by

non-Respironics personnel, tampering, or any kind of misuse or abuse of the system shall void the warranty in its entirety.

The advanced digital circuitry within the 920M PLUS requires no periodic maintenance or calibration.

Respironics does not recommend field repair of the 920M PLUS. The circuit board in the 920M PLUS is a multi-layer board using very narrow traces. Due to the very small trace size, extreme care must be used when 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 920M PLUS must be tested to ensure correct operation.

For additional technical information contact Respironics’ Customer Support department at:

Respironics, Georgia Inc.

175 Chastain Meadows Court

Kennesaw, Georgia 30144 USA

(800) 345-6443 (USA and Canada)

(724) 387-4000

Fax (800) 886-0245 (USA and Canada)

(412) 473-5010

www.respironics.com

All non-warranty work shall be done according to Respironics standard rates and charges in effect at the time of delivery to Respironics. All repairs include an 18-hour minimum burn-in and a complete retest of the 920M PLUS using factory test fixtures.

20 Service and Support

Warranty

RESPIRONICS, INC., (Respironics) warrants to the purchaser, for a period of three years from the date of purchase, each Model 920M PLUS Handheld Pulse Oximeter exclusive of sensors, cables, and batteries. (Refer to the individual package inserts for specific warranty information for sensors, cables, and other accessories.) Respironics shall repair or replace any 920M PLUS found to be defective in accordance with this warranty, free of charge, for which Respironics 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 920M PLUS delivered to the purchaser which is 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 Respironics. All repaired units shall be received by the purchaser at Respironics' place of business. For any 920M PLUS sent to Respironics for warranty repair which is found to be within specification, the purchaser agrees to pay $100.00 (US dollars).

The 920M PLUS is a precision electronic instrument and must be repaired by knowledgeable and specially trained Respironics-designated personnel only. Accordingly, any sign or evidence of opening the 920M PLUS, field service by non-Respironics personnel, tampering, or any kind of misuse or abuse of the 920M PLUS, shall void the warranty in its entirety.

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

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.

Warranty 21

Accessories

The following Respironics accessories function with the 920M PLUS:

Part Number Description

1007355 Rechargeable NiMH Battery Pack

920MPC Charger Stand

1007334 Charger Stand Power Supply - Domestic

1007333 Charger Stand Power Supply - Universal

Contact your distributor or Respironics

1007332 Carrying Case (Blue)

1007474 Operator’s Manual for the 920M PLUS

1007473 Operator’s Manual for the Model 920MPC Charger Stand

936 Adult Articulated Finger Clip Sensor (1 meter)

Charger Stand Power Cord - Universal

Pulse Oximeter Reusable Sensors

936P Pediatric Finger Clip Sensor

953 Adult Flex Sensor

934 Infant Flex Sensor

935 Neonatal Flex Sensor

948 Ear Clip Sensor

Pulse Oximeter Disposable Sensors

953D Adult Finger Flexi-Form Sensor, 10 per box

937D Pediatric Finger Flexi-Form Sensor, 10 per box

934D Infant Toe Flexi-Form Sensor, 10 per box

935D Neonatal Foot Flexi-Form Sensor, 10 per box

22 Accessories

Part Number Description

Other Accessories

Contact your distributor or Respironics

954A Adult FlexiWrap Sensor Wrap

954I Infant FlexiWrap Sensor Wrap

954N Neonatal FlexiWrap Sensor Wrap

927 Patient Extension Cable (1 meter)

955 Patient Simulator

960

1007476 Memory Cable (for use between the 920M PLUS and a PC running

1007478 Real-Time and Memory Cable (for use with 920M PLUS and a PC

Data retrieval software for Microsoft Windows 95/98/00 operating systems

Finger Phantom

Microsoft Windows 95/98/00 operating systems)

running Microsoft Windows 95/98/00 operating systems)

Pulse Oximeter Tester

For more information about Respironics parts and accessories, contact your distributor, or contact Respironics at (800) 345-6443 (USA and Canada) or (724) 387-4000.

Accessories 23

Troubleshooting Guide

Problem Possible Cause Possible Solution

The unit will not turn on. The batteries are depleted. Replace all 4 batteries.

A dash appears in the left digit of the SpO display.

The middle digits display dashes in both the SpO and pulse rate displays.

The displayed pulse rate does not correlate to the pulse rate displayed on the ECG monitor.

The batteries are installed incorrectly.

Metal contact in battery compartment is missing or damaged.

A sensor fault exists. The sensor may have become dislodged from the 920M PLUS or from the patient.

No signal is detected because the sensor is not

plugged in.

There is a sensor failure. Replace the sensor.

Excessive motion at the sensor site may be preventing the 920M PLUS from acquiring a consistent pulse signal.

The patient may have an arrhythmia, resulting in heart beats that do not yield a pulse quality signal at the sensor site.

Verify correct battery installation.

Contact Respironics Customer Support.

Verify that the sensor is correctly connected to the 920M PLUS and the patient; try a new sensor if the condition persists.

Verify the sensor connections.

Eliminate or reduce the cause of the motion artifact, or reposition the sensor to a site where motion is not present.

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

An erratic pulse rate display and/or a yellow pulse quality indicator during the concurrent use of electrosurgical equipment (ESU).

The pulse quality indicator is blinking yellow with each pulse.

24 Troubleshooting Guide

A non-Respironics sensor is being used.

The ECG monitor may not be functioning properly.

The ESU may be interfering with the pulse oximeter performance.

The quality of the pulse signal at the sensor site is marginal.

Replace the sensor with a Respironics sensor.

Examine the patient: replace the ECG monitor, or refer to the operator's manual for the ECG monitor.

Examine the patient: move the 920M PLUS, cables, and sensors as far away from the ESU as possible or refer to the ESU operator's manual.

Examine the patient: reposition the sensor or select an alternate sensor site.

Troubleshooting Guide (Continued)

Problem Possible Cause Possible Solution

You are unable to obtain a green blinking pulse quality display.

Low patient pulse strength;

the sensor site is poorly perfused;

the sensor is not correctly positioned.

The sensor is attached too tightly, or tape or other items are restricting the pulse quality at the sensor site.

Circulation is reduced due to excess pressure between the sensor and a hard surface.

Excessive ambient light. Reduce the ambient light.

Excessive patient motion. Reduce the patient motion.

The sensor is applied to a polished finger or toe nail.

Interference from:

• arterial catheter

• blood pressure cuff

• electrosurgical procedure

• infusion line

Reposition the sensor on the patient.

Reapply the sensor, select an alternate sensor site, or remove the restrictive material from the sensor site.

Allow the sensor and finger, foot, etc., to rest comfortably on the surface.

Remove the nail polish.

Reduce or eliminate the interference.

Pulse quality indicator is blinking red and the SpO

and/or pulse rate

displays show dashes.

Segments of the SpO pulse rate displays are missing.

Disruption in the 920M PLUS performance.

An inadequate signal at the sensor site.

Excessive motion at the sensor site may be prohibiting the 920M PLUS from acquiring a consistent pulse signal.

Sensor failure. Replace the sensor.

Defective LED displays. Displayed values may not be

Electromagnetic interference (EMI).

Examine the patient: reposition the sensor or select an alternate sensor site.

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

reliable; discontinue use of the 920M PLUS.

Remove the 920M PLUS from the EMI environment.

If these solutions do not correct the problem, please contact Respironics Customer Support at (800) 345-6443 (USA and Canada) or (724) 387-4000.

1007336

3485-000-03

Troubleshooting Guide 25

Respironics 920M PLUS Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual