Nellcor SRC-MAX Technical Manual

SRC-MAX

Pulse Oximetry
Functional Tester
Technical Manual

+

--

Nellcor Puritan Bennett Inc. is an affiliate of Tyco Healthcare. OXIMAX is a
trademark of Nellcor Puritan Bennett Inc.

This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme à la norme NMB-001 Canada.
To obtain information about a warranty, if any, contact Nellcor’s Technical

Services Department, or your local representative.
Purchase of this instrument confers no express or implied license under any

Nellcor Puritan Bennett patent to use the instrument with any sensor that is
not manufactured or licensed by Nellcor Puritan Bennett.

Covered by one or more of the following U.S. Patents and foreign
equivalents: 4,621,643; 4,653,498; 4,700,708; 4,770,179; Re.35,122 ;
4,928,692; 4,934,372; 5,078,136; 5,351,685; 5,368,026; 5,485,847; 5,533,507;
5,662,106; and 5,853,364.

Contents

Contents .................................................................................i

Figures ................................................................................. iii

Tables .................................................................................. iv

Safety Information ........................................ ..... ..... ............. 1

Cautions ......................................................................... 1

Introduction .......................................................................... 3

Intended Use .................................................................. 3

Controls, Indicators, and Symbols ....................................... 5

Front Panel ..................................................................... 5

Back Panel ..................................................................... 6

Side View ...................................................................... 6

SRC-MAX Buttons and Symbols .................................. 7

Select Options ................................................................ 8

SRC-MAX Components and Accessories ...........................9

List of Components ....................................................... 9

Optional Accessories: .................................................... 9

SRC-MAX Operation with a Pulse Oximeter or Monitor . 11

ON / OFF Operation .................................................... 11

Power-Saving Mode .................................................... 11

Introduction ................................................................. 11

Routine Maintenance .............................................. ........... 17

Cleaning ....................................................................... 17

Battery Replacement .................................................... 18

Performance Verification ................................................... 21

Introduction ................................................................. 21

Equipment Required .................................................... 21

LED Current to Photodetector Current Test ................ 22

Testing the RED LED .................................................. 23

Testing the IR LED ...................................................... 25

BPM (Beats per Minute) Test ...................................... 27

Three-Lead ECG Cable ........................................... 9

C-Lock Cable ........................................................ 10

Test Setup .............................................................. 12

Test 1: BPM (Beats per minute) ........................... 14

Test 2: Saturation (Sp0

2) ....................................... 15

Test 3: Modulation ................................................ 15

Test 4: Light .......................................................... 16

Equipment Required ............................................. 27

SRC-MAX i

Contents

Setup ......................................................................27

BPM Test (Alternate Method) ......................................29

Equipment Required: .............................................29

Setup ......................................................................29

Troubleshooting ..................................................................31

Introduction ..................................................................31

Obtaining Technical Assistance ...................................31

Troubleshooting ...........................................................31

Electromagnetic Interference .......................................32

Packing for Shipment ..........................................................35

Introduction ..................................................................35

Returning the SRC-MAX .............................................35

Specifications ......................................................................37

Controls ........................................................................37

Rate ........................................................................37

Light ....................................................................... 37

Modulation ............................................................. 37

Saturation ............................................................... 37

Performance .................................................................38

Saturation (SpO2) ..................................................38

Pulse Rate ..............................................................38

Light Levels ...........................................................38

Modulation (%MOD) ............................................38

ECG .......................................................................38

C-Lock ...................................................................38

Timing ....................................................................39

Simulated Waveform .............................................39

Power ............................................................................ 39

Physical Characteristics .........................................39

Environmental Conditions ............................................40

Standards ......................................................................40

Electrical Safety Requirements ..............................40

EMC/EMI ..............................................................41

International and European Union Compliance ....41

Index ...................................................................................43

ii

Figures

Figure 1: Front Panel..............................................5

Figure 2: Back Panel..............................................6

Figure 3: SRC-MAX Tester Side View ................... 6

Figure 4: Three-Lead ECG Cable .......................... 9

Figure 5: ECG Cable Warning Label...................... 9

Figure 6: C-Lock Cable ........................................ 10

Figure 7: DOC-10 Sensor Cable..........................13

Figure 8: SpO2 sensor/cable connector............... 13

Figure 9: Battery Compartment Access ............... 18

Figure 10: Pinout Reference SRC-MAX................. 21

Figure 11: Block Diagram....................................... 22

Contents

Figure 12: RED LED Low Light Setting..................24

Figure 13: RED LED High Light Setting................. 25

Figure 14: IR LED Low Light Setting...................... 26

Figure 15: IR LED High Light Setting..................... 27

Figure 16: 3 Volts Peak-to-Peak at 3 Hz................28

Figure 17: 200 BPM ............................................... 29

SRC-MAX iii

Contents

Tables

Table 1: Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 32

SRC-MAX iv

Safety Information

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O

monitors refer to OEM O

monitors.

Cautions

Cautions are identified by the CAUTION symbol shown
above.

XIMAX technology-based

Cautions alert the user to exercise care necessary for the safe
and effective use of the SRC-MAX.

Caution: The case of the SRC-MAX should be opened
only by qualified service personnel. There are no user
serviceable parts inside. Opening the battery
compartment does not constitute opening the tester case.

Caution: Use your institution’s appropriate bench test
procedures when using the SRC-MAX functional tester.

Caution: Install batteries into the SRC-MAX before
using. See Routine Maintenance, page 17.

Caution: Do not open the case of the unit, as the device
could be damaged.

Caution: Do not connect ground directly to any pins on
the DB 9, as the device could be damaged. Refer to Block
Diagram, Figure 17 on page 22.

SRC-MAX 1

Safety Information

Caution: Prior to connecting the oscilloscope’s negative
terminal to the +5 volt supply (+) terminal, ensure that
the oscilloscope negative is isolated from the +5 volt
supply ground.

Caution: This device has been designed to provide
resistance to electromagnetic interference. However,
because of the proliferation of radio-frequency
transmitting equipment and other sources of electrical
noise in the health-care environment (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. Disruption may be evidenced by erratic readings,
cessation of operation, or other incorrect functioning. If
this occurs, the site of use should be surveyed to
determine the source of disruption, and actions taken to
eliminate the source. If assistance is required, contact
Nellcor Puritan Bennett’s Technical Services Department
or your local Nellcor Puritan Bennett representative.

Caution: Do not spray, pour, or spill any liquid on the
SRC-MAX, its accessories, connectors, switches, or
openings.

Caution: Do not use the SRC-MAX to test non-O
pulse oximeters or non-O

XIMAX OEM monitors.

XIMAX

Caution: Dispose of batteries in accordance with local
requirements and regulations.

2

Introduction

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O

monitors refer to OEM O

monitors.

Intended Use

The SRC-MAX is intended for qualified technicians to
functionally test Nellcor O
oximeters and OEM O
The SRC-MAX tester will perform the following tests:

• Red and infrared light-emitting diode (LED) drive
circuitry

XIMAX technology-based

XIMAX technology-based pulse

XIMAX technology-based monitors.

• Heart rate (beats per minute, BPM)

• Oxygen saturation (Sp0

2)

• Light level

• Percent modulation

The SRC-MAX functional tester is designed to simulate an
operational Nellcor O

XIMAX compatible sensor and check

performance of the pulse oximeter or monitor.

SRC-MAX 3

(Blank Page)

Controls, Indicators, and
Symbols

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

Front Panel

XIMAX technology-based

1. Pulse oximeter/monitor cable connector 6. % Modulation select button

2. RED LED drive indicator 7. % Sp0

3. C-LOCK output connector port 8. Light level output button

4. ECG output connector port 9. Pulse rate beats per minute (BPM) button

5. Battery low indicator 10. INFRARED LED drive indicator

SRC-MAX 5

2 select button

Figure 1: Front Panel

Controls, Indicators, and Symbols

Back Panel

Side View

1. C-LOCK connector port 2. ECG Port

Figure 2: Back Panel

Figure 3: SRC-MAX Tester Side View

6

Controls, Indicators, and Symbols

SRC-MAX Buttons and Symbols

Front panel symbology for the SRC-MAX are as follows:
Pulse rate/beats per minute (BPM) selector Button

Light output selector button

Percentage of Sp0

2 selector button

Modulation selector button

Feature not available at this time

Battery low indicator

Red LED indicator

C-Lock port symbol

ECG Port symbol

IR (infrared) LED indicator

SRC-MAX 7

Controls, Indicators, and Symbols

Select Options

There are four button switches on the SRC-MAX Front Panel
with two associated LEDs.

Pulse/Beats per Minute

Light Level

% Sp0

2

Percent Modulation

The pulse oximeter or monitor will display readings for both
Saturation (Sp0

2) and Pulse Rate. The numeric displays will

correlate with the SRC-MAX control panel.

8

SRC-MAX Components and
Accessories

List of Components

(1) SRC-MAX Functional Tester
(2) AA Alkaline Batteries
(1) Technical Manual

Optional Accessories:

Three-Lead ECG Cable

See Figure 4. The three-lead ECG cable is shipped with a
warning label, Figure 5. Attach the warning label to the three­lead ECG cable before using the cable.

Figure 4: Three-Lead ECG Cable

SRC-MAX 9

Figure 5: ECG Cable Warning Label

SRC-MAX Components and Accessories

C-Lock Cable

See Figure 6.

Figure 6: C-Lock Cable

10

SRC-MAX Operation with a Pulse
Oximeter or Monitor

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

ON / OFF Operation

The SRC-MAX will automatically turn ON when connected
to the sensor/patient cable and a pulse oximeter or monitor
that is turned on.

The SRC-MAX will automatically turn OFF when detached
from the pulse oximeter or monitor, or if the pulse oximeter
or monitor is turned off.

XIMAX technology-based

Install two AA batteries in the battery compartment of the
SRC-MAX before connecting to the sensor/patient cable and
the pulse oximeter or monitor. Refer to Battery Replacement
on page 18.

Power-Saving Mode

When the SRC-MAX is connected to a pulse oximeter or
monitor and no buttons are pressed for 2 minutes the SRC­MAX goes into the power-saving mode. All of the LEDs turn
off, with the exception of the IR and RED LEDs. The SRC­MAX continues to function normally . Press any button on the
SRC-MAX and the LEDs will illuminate.

Introduction

The SRC-MAX functional tester allows qualified technicians
to functionally test Nellcor O
oximeters and OEM O

SRC-MAX 11

XIMAX technology-based pulse

XIMAX technology-based monitors.

SRC-MAX Operation with a Pulse Oximeter or Monitor

The technician must perform the test setup procedure before
performing tests 1 through 4. The following is a brief
description of each test:

• Test Setup — This procedure establishes the

baseline for all the other tests. The Test Setup
procedure must be performed before performing any
or all of the SRC-MAX tests.

• Test 1: BPM — This procedure simulates an

O

XIMAX sensor attached to a patient indicating 60

BPM and 200 BPM. The test setup procedure sets up
Test 1 for 60 BPM.

Test Setup

• Test 2: SpO

XIMAX sensor attached to a patient ,indicating 75

O

2 — This procedure simulates an

percent blood oxygen saturation and 90 percent
blood oxygen saturation. The test setup procedure
sets up Test 2 for 75 percent blood oxygen saturation.

• Test 3: Modulation — This procedure simulates an

O

XIMAX sensor attached to a patient indicating low

and high pulse strength. The test setup procedure sets
up Test 3 for low pulse strength.

• Test 4: Light — This procedure simulates an

O

XIMAX sensor attached to a patient indicating low

and high light level passing throug h the patien t at the
sensor site. The test setup procedure sets up Test 4
for low light level.

Note: Refer to the applicable pulse oximeter or monitor

1. Locate the Sp0
pulse oximeter or monitor.

2. Connect a DOC-10 pulse oximetry cable to the pulse
oximeter’s Sp0
to the monitor’s Sp0

12

operator’s manual for the pulse oximeter or monitor
operation and test procedures.

2 Sensor Port on the front panel of the

2 sensor port or the ap plicable OEM cable

2 sensor port. See Figure 7.

SRC-MAX Operation with a Pulse Oximeter or Monitor

Figure 7: DOC-10 Sensor Cable

3. Connect the SRC-MAX Sp0

2 sensor/cable connector to

other end of the DOC-10 cable or applicable OEM cable.
See Figure 8.

Figure 8: SpO

2 sensor/cable connector

4. Turn on the pulse oximeter or monitor. Refer to the
applicable pulse oximeter or monitor operator’s manual.

5. The IR and RED LEDs will alternately flash, turn off,
turn on and remain lit once the SRC-MAX is powered up.

6. The Green and Amber LED ( ) and the Red Battery
Low LED will illuminate for 2 seconds and turn off,
indicating the LEDs are functioning properly.

7. The four selectable parameters (BPM, light level,
%SpO
condition (LED will be lit closest to the selector button).

SRC-MAX 13

2, and percent modulation) will initiate to a default

SRC-MAX Operation with a Pulse Oximeter or Monitor

Pulse/Beats per Minute

Light Level

% Sp0

2

Percent Modulation

8. The SRC-MAX is ready to test the pulse oximeter or
monitor.

Test 1: BPM (Beats per minute)

The BPM test checks the pulse oximeter or monitor beats per
minute operation at 60 and 200 BPM.

Prerequisite Procedure — Test Setup on page 12.

1. The pulse oximeter or monitor should be displaying a
BPM of 60 (57 to 63 BPM).

2. Press and release the SRC-MAX Heart Rate/BPM button.

3. The BPM LED indicator on the SRC-MAX will switch to
illuminate the 200 numeric reading.

4. Observe the display of the pulse oximeter or monitor.
The numeric reading for BPM will gradually rise to the
200 (197 to 203 BPM) level. Allow the pulse oximeter or
monitor 10-30 seconds to achieve the test result.

14

SRC-MAX Operation with a Pulse Oximeter or Monitor

Test 2: Saturation (Sp02)

The saturation test checks the operation of the pulse oximeter
or monitor percent of blood oxygen saturation at 75% and
90%.

Prerequisite Procedure — Test Setup on page 12.

1. The pulse oximeter or monitor should be displaying a
%SpO

2 of 75 (72 to 78).

2. Press and release the SRC-MAX %Sp0

3. The %Sp0
from a value of 75 and illuminate the 90 value.

4. Observe the display of the pulse oximeter or monitor. The
numeric reading for %Sp0
(87 to 93). Allow the oximeter several seconds to achieve
the test result.

Test 3: Modulation

The modulation test checks to ensure that the pulse oximeter
or monitor is functioning properly under low and high
modulation conditions. The pulse oximeter or monitor shall
display the correct %SpO
in tests 1 and 2, under low and high modulation conditions.

2 button.

2 LED indicator on the SRC-MAX will switch

2 will flash and change to 90

2 and pulse rate reading, as defined

Prerequisite Procedure — Test Setup on page 12.

1. Perform Test 1: BPM on page 14.

2. Perform Test 2: %SpO

3. Press and release the SRC-MAX MOD button.

SRC-MAX 15

2 on page 15.

SRC-MAX Operation with a Pulse Oximeter or Monitor

4. The Modulation LED indicator on the SRC-MAX will
switch from the low (arrow down) value and illuminate
the high value (arrow up).

5. The Plethysmographic waveform or blip bar on the pulse
oximeter or monitor display will increase in amplitude
within a few seconds.

6. Perform Test 1: BPM on page 14.

7. Perform Test 2: %SpO

Test 4: Light

The light test checks to ensure that the pulse oximeter or
monitor is functioning properly under low and high light
conditions. The pulse oximeter or monitor shall display the
correct %SpO
and 2, under low and high light conditions.

Prerequisite Procedure — Test Setup on page 12.

1. Perform Test 1: BPM on page 14.

2. Perform Test 2: %SpO

3. Press and release the Light button on the SRC-MAX.

2 on page 15.

2 and pulse rate reading, as defined in tests 1

2 on page 15.

4. The HIGH (arrow up) LED will illuminate.

5. Pleth View — The Plethysmographic waveform on the
pulse oximeter display may briefly disappear and then
reappear slightly altered from the previously displayed
waveform.
Blip View — The blip display will saturate momentarily
and then return to normal indications.

6. Perform Test 1: BPM on page 14.

7. Perform Test 2: %SpO

16

2 on page 15.

Routine Maintenance

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

Cleaning

Caution: Do not spray, pour or spill any liquid on the
SRC-MAX, its accessories, connectors, or openings in the
chassis.

The SRC-MAX may be surface-cleaned by using a soft cloth
dampened with either a commercial, non-abrasive cleaner or
a solution of 70% alcohol in water, and lightly wiping the
surface of the unit.

XIMAX technology-based

SRC-MAX 17

Routine Maintenance

Battery Replacement

Figure 9: Battery Compartment Access

Press and slide the battery compartment door down to expose
the batteries. See Figure 9, above.

The SRC-MAX requires two AA alkaline batteries. The unit
will run continuously for a minimum of 45 hours with a new
set of batteries.

Caution: Install the batteries in the unit according to
polarity markings within the battery compartment.

When the SRC-MAX is connected via cable to a pulse
oximeter or monitor, the SRC-MAX will automatically
power on. The unit will turn off within two seconds of being
disconnected from the pulse oximeter or monitor.

18

Routine Maintenance

The Low Battery Indicator LED will illuminate and blink
when the voltage drops below 1.75 volts. There is
approximately 15 minutes of use after first indication of low
battery LED. It is recommended to cease operation as soon as
possible and replace the batteries in the SRC-MAX.

SRC-MAX 19

(Blank Page)

Performance Verification

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

Introduction

This section describes the procedures for verifying specified
functionality of the SRC-MAX.

All measurements/tests shall be performed through the 9-pin
sensor/cable connector. See Figure 10.

Caution: Do not open the case of the SRC-MAX. The
device could be damaged.

XIMAX technology-based

Figure 10: Pinout Reference SRC-MAX

Caution: Do not connect ground to any pins on the SRC­MAX 9 pin connector or the 9-pin D-sub female connector
used in the test set up. The device could be damaged.
Refer to Block Diagram, Figure 11 on page 22.

Equipment Required

• Oscilloscope; 20 MHz bandwidth, 2 channels, able to
resolve 500 millivolts peak-to-peak to 3 volts peak­to-peak at 1,000 Hz, 1 and 3 Hz

• 10 ohm ±1% resistor; 1/10 Watt Metal Film

• 1 meg-ohm ±1% resistor; 1/10 Watt Metal Film

• Power Supply, able to deliver +5 volts 100 mA

SRC-MAX 21

Performance Verification

• Signal/Function Generator, able to deliver 0 to ±5
volts peak-to-peak at 1,000 Hz, 100 mA

• Pulse oximeter or monitor

• ECG monitor (RA, LA, LL)

LED Current to Photodetector Current Test

Note: The initial setting on the Signal Generator is 1000

Hz, Square wave, 0 to 5 volts peak-to-peak. The
RED and IR LEDs will be tested separately.

1. Connect a 10 ohm resistor (R1 in Figure 11) to pin 3 of a
9-pin D-sub female connector. The other side of the 10
ohm resistor should be connected to the Signal
Generator’s ground. See Figure 11.

2. Connect the positive side of the Signal generator to pin 2
of the 9 pin D-sub female connector.

3. Connect the oscilloscope channel 1 (+) to the junction of
pin 3 and the 10 ohm resistor.

4. Connect the oscilloscope channel 1 (-) to the junction of
the Signal Generator’s ground and the 10 ohm resistor.

22

Figure 11: Block Diagram

Testing the RED LED

1. Turn on the signal generator.

2. Adjust the output until there is 475 to 525 millivolts peak
across the 10 ohm resistor.

3. Connect one end of a 1 meg ohm resistor (R2 in Figu re

11) to pin 9 of the 9 pin D-sub female connector.

4. Connect the other end to the positive terminal of the
power supply set for +5 volts.

5. Connect the negative terminal of the +5 volt supply to
pin 5 of the 9 pin D-sub female connector.

Performance Verification

Caution: See Figure 11. Prior to connecting the
oscilloscope’s negative terminal to the +5 volt supply (+)
terminal, ensure that the oscilloscope negative is isolated
from the +5 volt supply ground.

6. Connect the oscilloscope channel 2 (+) lead to the
junction of pin 9 and the 1 meg ohm resistor.

7. Connect the oscilloscope channel 2 (-) lead to the
junction of the positive terminal of the power supply (set
for +5 volts) and the other end of the 1 meg ohms.

8. With Low-Light setting selected on the SRC-MAX,
measure the peak-to-peak voltage across the 1 meg ohm
resistor on channel 2 of the oscilloscope. the peak-to­peak voltage should be 600 to 900 millivolts peak-to­peak. See Figure 12. The peak-to-peak voltage tolerance
includes a possible probe impedance error.

SRC-MAX 23

Performance Verification

Figure 12: RED LED Low Light Setting

Note: This figure and the following waveform figures

represent typical measurements. The actual
measured waveforms may vary in amplitude and
scale.

9. Select the High Light setting on the SRC-MAX. Measure
the peak-to-peak voltage across the 1 meg ohm resistor
on Channel 2 of the oscilloscope. The peak-to-peak
voltage should be 2.4 to 3.6 volts peak-to-peak. See
Figure 13.

24

Performance Verification

Figure 13: RED LED High Light Setting

Note: The peak-to-peak voltage tolerance includes a

possible probe impedance error.

Testing the IR LED

1. Turn on the signal generator.

2. Adjust the signal generator output until there is -475 to ­525 millivolts peak across the 10 ohm resistor (R1 in
Figure 11).

3. Select the Low Light setting on the SRC-MAX.

4. Measure the peak-to-peak voltage across the 1 meg ohm
resistor (R2 in Figure 11) on Channel 2 of the
oscilloscope. The peak-to-peak voltage should be 600 to
900 volts peak-to-peak . See Figure 14.

SRC-MAX 25

Performance Verification

Figure 14: IR LED Low Light Setting

Note: The peak-to-peak voltage tolerance includes a

possible probe impedance error.

5. Select the High Light Setting on the SRC-MAX.

6. Measure the peak-to-peak voltage across the 1 meg ohm
resistor on Channel two of the Oscilloscope. The peak-to­peak voltage should be 2.4 to 3.6 volts peak-to-peak. See
Figure 15.

26

Performance Verification

Figure 15: IR LED High Light Setting

Note: The peak-to-peak voltage tolerance includes a

possible probe impedance error.

BPM (Beats per Minute) Test

Equipment Required

• Pulse oximeter or monitor

• Oscilloscope

• Sub-mini 3/32” phone plug (Tip = signal, Sleeve =
ground)

Setup

1. Connect the SRC-MAX to the powered up pulse
oximeter or monitor. The SRC-MAX should power up
normally.

2. Select the BPM for 60 on the SRC-MAX.

3. Connect a Sub-mini 3/32” phone plug to the C- Lock
output of the SRC-MAX.

SRC-MAX 27

Performance Verification

4. Connect the oscilloscope positive lead to the phone
plug’s tip and the ground to the sleeve.

5. Adjust the oscilloscope for 3 volts peak-to-peak at 1 Hz.
See Figure 16.

.

Figure 16: 3 Volts Peak-to-Peak at 3 Hz

Note: The period of the signal should be 0.96 to 1.04

seconds.

6. The pulse width of the signal should be 50 to 100
milliseconds.

7. Select 200 BPM on the SRC-MAX.

8. Adjust the Oscilloscope for 3 volts peak-to-peak at 3 Hz.
See Figure 17.

28

Performance Verification

Figure 17: 200 BPM

9. The period of the signal should be 0.27 to 0.33 seconds.

10. The pulse width of the signal should be 50 to 100
milliseconds.

BPM Test (Alternate Method)

Equipment Required:

• Pulse oximeter or monitor

• ECG monitor

• Three lead ECG cable

Setup

T olerances for this procedure are in the Specifications section,
page 37.

1. Connect the SRC-MAX to the powered-up pulse
oximeter or monitor. The SRC-MAX should power up
normally.

SRC-MAX 29

Performance Verification

2. Select 60 BPM on the SRC-MAX.

3. Connect the 3-Lead ECG cable to the ECG monitor and
the ECG port of the SRC-MAX.

4. Select Lead 1 on the ECG monitor.

5. Verify the 60 BPM reading on the ECG monitor.

6. Repeat step 5 for Lead selection 2 and 3.

7. Select 200 BPM on the SRC-MAX.

8. Select Lead 1 on the ECG monitor.

9. Verify the 200 BPM reading on the ECG monitor.

10. Repeat step 9 for Lead selection 2 and 3.

30

Troubleshooting

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

Introduction

Caution: The case of the SRC-MAC should be opened
only by qualified service personnel. There are no user­serviceable parts inside.

Obtaining Technical Assistance

XIMAX technology-based

Contact Nellcor Technical Services Department,

1.800.635.5267 or your local Nellcor representative.

Troubleshooting

Troubleshooting symptoms, causes, and fixes are provided in
Table 1.

SRC-MAX 31

Troubleshooting

Table 1: Troubleshooting

Symptom Cause/Fix

SRC-MAX does not power­up when attached to a pulse
oximeter or monitor.

SRC-MAX powers on and
turns off after about 3
seconds.

All the LEDs turn off, with
the exception of the IR and
RED LEDs; functionality
continues.

1. Batteries not installed,
inserted incorrectly, or
discharged.

2. Pulse oximeter or monitor
is not powered-on.

3. Sensor/patient cable not
connected.

4. Non-compatible pulse
oximeter or monitor.

5. Disconnect and reconnect
the SRC-MAX.

1. Disconnect and reconnect
SRC-MAX.

2. Pulse oximeter or monitor
has shutdown or reset.

Normal operation, the SRC­MAX goes into power-saving
mode after about 2 minutes.
Press any button and the LEDs
will illuminate.

All of the LEDs turn on and
then turn off; this action
repeats.

Electromagnetic Interference

This device has been tested and found to comply with the
limits for medical devices to the IEC 60101-1-2: 1993,
EN60601-1-2:1994, Medical Device Directive 93/42/EEC.
These limits are designed to provide rea sonable 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

32

Batteries are too low for normal
operation. Replace batteries.

Troubleshooting

in the health-care environment (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.

This equipment generates, uses and can radiate radio
frequency energy and if not used in accordance with the
instructions, may cause harmful interference with other
devices in the vicinity. Disruption or interference may be
evidenced by erratic readings, cessation of operation, or other
incorrect functioning. If this occurs, the site of use should be
surveyed to determine the source of this disruption, and
actions taken to eliminate the source.

The user is encouraged to try to correct the interference by
one or more of the following measures:

• Turn equipment in the vicinity off and on to isolate
the offending equipment

• Reorient or relocate the other receiving device

• Increase the separation between the interfering
equipment and this equipment

• If assistance is required, contact Nellcor Puritan
Bennett’s Technical Services Department or your
local Nellcor Puritan Bennett representative.

SRC-MAX 33

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Packing for Shipment

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

Introduction

To return the tester for any reason, follow the instructions in
this section.

Returning the SRC-MAX

Contact Nellcor Technical Services Department,

1.800.635.5267 or your local Nellcor representative for
shipping instructions including a Returned Goods
Authorization (RGA) number. Unless Otherwise instructed
by Nellcor T echnical Services Department, it is not necessary
to return any other accessory item with the tester.

XIMAX technology-based

If the original carton is not available, use a suitable carton
with appropriate packing material to protect the unit during
shipping.

Mark the shipping carton and any shipping documents with
the Returned Goods Authorization (RGA) number . Return the
SRC-MAX by any method that provides proof of delivery.

SRC-MAX 35

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Specifications

Note: In this manual, pulse oximeters refer to Nellcor

XIMAX technology-based pulse oximeters and

O
monitors refer to OEM O
monitors.

Controls

Rate

Two positions, Simulated Heart Rate:
60 BPM
200 BPM

XIMAX technology-based

Light

Two Positions, Simulated light attenuation level :
Low light level
High light level

Modulation

Two positions, Simulated Pulse Strength:
Low % Modulation
High % Modulation

Saturation

Two Positions:
75 % Sp02
90 % Sp02

SRC-MAX 37

Specifications

Performance

Saturation (SpO2)

75% ±1 Sat Point
90% ±1 Sat Point

Pulse Rate

60 bpm ±1 bpm
200 bpm ±2 bpm

Light Levels

Low Level = 750 nAi ±10%
High Level = 3,000 nAi ±10%

(nAi = nano-Amperes photodetector current)

Modulation (%MOD)

Low Modulation = 0.4% to 0.6%
High Modulation = 4.5% to 5.5%

ECG

Analog Outputs (R-Wave)
Output 1: = RA (White)
Output 2: = LA (Black)
Output 3: = LL (Red)
This is a 3 lead ECG compatible output.

C-Lock

Output 1: SRC-MAX System Ground

38

Output 2: CMOS Compatible Output

Timing

C-Lock timing is synchronous with each optical pulse.
C-Lock synchronization signals start to 45-55 msec prior to

the optical pulse.
C-Lock synchronization signal is 50 msec to 100 msec in

width.

Simulated Waveform

Rise Time = 95 msec to 105 msec for all heart rates.
Fall Time = 190 msec to 210 msec for 200 BPM.

Specifications

Fall Time = 855 msec to 945 msec for 60 BPM.

Power

2 AA Alkaline Batteries
Minimum of 45 hours of continuous operation with new

batteries.
Typical power consumption: 80 milliwatts

Physical Characteristics

Overall Dimensions: 7 inches x 3.52 inches x 1.45 inches
Weight: .45 pounds

SRC-MAX 39

Specifications

Environmental Conditions

Temperature 0 ºC to 40 ºC (32 ºF to 104 ºF)
Relative Humidity 15% to 95% non-condensing
Altitude 2,000 m (6,561.6 feet)

Transport and Storage (not in shipping container)

Temperature -20 ºC to 70 ºC

Operation

(-4 ºF to 158 ºF)

Relative Humidity 15% to 95% non-condensing

Transport and Storage (in shipping container)

Temperature -20 ºC to 70 ºC

Relative Humidity 15% to 95% non-condensing

Standards

Electrical Safety Requirements

UL 3101-1/UL 3111-1: Safety Requirements for Electrical
Equipment for measurement, control and laboratory use.

(-4 ºF to 158 ºF)

IEC 61010-1 (EN61010): Safety Requirements for Electrical
Equipment for measurement, control and laboratory use.

CSA 22.2 No. 1010.1: Safety Requirements for Electrical
Equipment for measurement, control and laboratory use.

40

EMC/EMI

Specifications

IEC 61326-1, Amendment 1 (EN 61326-1): Electrical
Equipment for measurement, control and laboratory use ­EMC Requirements.

Radiated emissions per Federal Communication Commission
(FCC) part 15.

This ISM device complies with Canadian ICES-001, (CISPR
11, Class b, Group 1).

CISPR 11: Industrial, Scientific and Medical (ISM) Radio­Frequency Equipment - Electromagnetic Disturbance
Characteristics - Limits and Methods of Measurement.

IEC 61000-4-2: Electromagnetic Comparability (EMC) ­Testing and Measurement Techniques - Electrostatic
Discharge Immunity Test.

IEC 61000-4-3: Electromagnetic Comparability (EMC) ­Testing and Measurement Techniques - Radiated, Radio
Frequency, Electromagnetic Field Immunity Test.

International and European Union Compliance

CB Scheme (Certified Body for non-North American
Certification) for Electrical Safety requirements under the
IEC for international compliance.

CE-Mark requirements to meet the Electromagnetic
Compatibility Directives (EMCD), 89/336/ECC.

SRC-MAX 41

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Index

A

Accessories 9

B

Batteries disposal 2
Battery Low indicator 5
Battery replacement 18
Beats per minute test 14, 27
Buttons 7

C

Cautions 1
Cleaning 17
C-Lock cable 10
C-LOCK connector port 6
C-LOCK output connector port 5

D

Dispose of batteries 2
DOC-10 sensor cable 13

E

ECG output connector port 5
ECG Port 6
Electrical safety requirements 40
EMC/EMI 41
Environmental conditions 40

F

Front panel 5

I

INFRARED LED drive indicator 5
Intended use 3
IR LED test 25

L

LED current to Photodetector current test 22
Light level output button 5
Light test 16
List of components 9

SRC-MAX 43

M

Modulation test 15

N

Non-OXIMAX OEM monitors 2
Non-OXIMAX pulse oximeters 2

O

Opening the SRC-MAX 1
Operating

Relative Humidity 40
Temperature 40

Operation 11

P

Packing 35
Percent Modulation Select Button 5
Percent Sp02 Select Button 5
Performance specifications 38
Performance verification 21
Power specifications 39
Pulse oximeter/monitor cable connector 5
Pulse rate beats per minute button 5

Index

R

RED LED Drive Indicator 5
Returned Goods Authorization number 35
Returning the SRC-MAX 35
Routine maintenance 17

S

Safety Information 1
Saturation test 15
Setup 12
Specifications

Environmental 40

Storage

Relative Humidity 40
Temperature 40

Symbols 7

T

Technical assistance 31
Testing the RED LED test 23

44

Three-Lead ECG cable 9
Transport

Relative Humidity 40
Temperature 40

Troubleshooting 31

Index

SRC-MAX 45

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Tyco Healthcare Group LP
Nellcor Puritan Bennett Division
4280 Hacienda Drive
Pleasanton, CA 94588 USA
Toll Free: 1.800.635.5267

Authorized Representative
T yco Healthcare UK LTD
154 Fareham Road
Gosport PO13 0AS, U.K.

© 2002 Nellcor Puritan Bennett Inc. All rights reserved. 065696A-0602