Accriva Diagnostic AVOXimeter 4000 User manual

Operator’s Manual

ii
Manufacturing Company Location
Accriva Diagnostics, Inc.
6260 Sequence Drive, San Diego, CA USA
Phone: [phone]
Fax: [phone]
web site: www.accriva.com
Copyright and Trademarks
Copyright© 2015 Accriva Diagnostics, Inc. All rights reserved. This material may not be
reproduced or copied, in whole or in part, without the written permission of Accriva.
Accriva and AVOXimeter are registered trademarks of Accriva Diagnostics, Inc. in the United
States and other jurisdictions.
U.S. Patents. 5,430,542 and 6,262,798. Euro/UK Patent 0663070. Other patents pending.
Technical Support
Contact Technical Support at [phone] or [phone], or by e-mail at
[e-mail].

iii
Table of Contents
1INTRODUCTION......................................................................................................6
Intended Use of the AVOXimeter 4000.....................................................................6
Summary and Explanation of the Test......................................................................6
Glossary of Abbreviation Equivalents ……………………………………………………7
Operating Precautions and Warnings.......................................................................8
Limitations................................................................................................................9
2DESCRIPTION.......................................................................................................10
Front Panel.............................................................................................................10
Keypad...................................................................................................................11
Menus ...................................................................................................................12
Test Cuvettes.........................................................................................................13
Connections...........................................................................................................14
Automatic Standby and Shutdown..........................................................................14
Instrument Specifications .......................................................................................15
Reportable Range......................................................................................15
Accuracy....................................................................................................15
Precision ....................................................................................................15
Interference................................................................................................16
Calibration..............................................................................................................16
3GETTING STARTED .............................................................................................17
Unpacking and Inspection......................................................................................17
Materials Provided......................................................................................17
Materials Required But Not Provided..........................................................17
Optional Materials ......................................................................................18
Charging the Batteries............................................................................................18
Setting Up the Instrument.......................................................................................19
Setting Display Backlighting .......................................................................19
Specifying Units for Total Hemoglobin (THb)..............................................19
Enabling or Disabling Display of [sO2], [O2Ct], and [O2Cap]........................20
Enabling or Disabling Suppression of Negative Values ..............................20
Changing the Date and Time......................................................................21
Setting the Standby Delay..........................................................................22
Specifying Entry of User ID and/or Patient ID.........................................................23
Specifying Mandatory Entry of an Authorized User ID................................23
Specifying Optional Entry of a User ID Whenever a Test is Run.................28
Specifying Optional Entry of a Patient ID Whenever a Test is Run.............29
Specifying a Different Value for Hüfner’s Number...................................................30
Calibration..............................................................................................................31
Cuvette Calibration Code ...........................................................................31
Re-Calibration............................................................................................31

iv
4OPERATION.......................................................................................................329
Startup ...................................................................................................................32
Sample Collection and Preparation.........................................................................33
Sample Collection.......................................................................................33
Sample Preparation....................................................................................33
Running a Test.......................................................................................................34
Running a Test on a Patient Sample ..........................................................34
Using the Printer.....................................................................................................36
Printing the Current Test Results................................................................36
Specifying Automatic Printing of Results.....................................................36
Changing the Serial Port Baud Rate and Parity..........................................36
Data Management..................................................................................................37
Reviewing and/or Printing the Last Sample ................................................37
Locating, Reviewing, and/or Printing any Sample.......................................38
Printing all Stored Data...............................................................................38
Aborting Printing of Results ........................................................................38
Quality Control........................................................................................................39
Performing Optical Quality Control..............................................................39
Running Liquid Controls..............................................................................41
Entering Liquid Control Lot Numbers..........................................................43
Entering Cuvette Lot Numbers....................................................................44
Shutdown ...............................................................................................................45
Troubleshooting......................................................................................................46
5MAINTENANCE....................................................................................................49
Verification of Instrument Temperature...................................................................49
Cleaning the Optical Detector.................................................................................50
Replacing the Battery .............................................................................................54
6QUALITY CONTROL LOGS................................................................................. 57
7WARRANTY .........................................................................................................60
Certification, Warranty and Service Warranty, and Service.....................................60
8SAFETY STANDARDS ......................................................................................... 62
Guidance and Manufacturer’s Declaration – Electromagnetic Emissions....................63
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity..................64
INDEX .........................................................................................................65
32

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Important Labels and Symbols
Before using the AVOXimeter 4000, it is essential that the contents of this Operator’s Manual,
any labels on the instrument or its packaging, and instructions accompanying AVOXimeter 4000
cuvettes are read and understood by the operator. These materials make reference to additional
symbols that are explained below:
Product Conforms to Directive 98/79/EC, 27 October 1998 on In-Vitro Diagnostic
Medical Devices
Serial Number of Instrument
Lot Number of Cuvettes
Catalogue Number of Devices
Do Not Reuse– Single Use Only
Upper and Lower Temperature Limitations (For Storage or Use)
For in vitro Diagnostic Use
Attention - Read Accompanying Documentation or Instructions
Consult Instructions for Use
Input Port for DC Power Cord from AC/DC Power Module - Polarity, VDC
and A Input
Serial Output Port for Data Transfer – RS232C
Temperature Probe Input
Name and Address of Manufacturer
Warning - Biohazard
Medical Equipment per Annex 1A, Item 8 Directive 2002/96/EC For Electronic
Equipment Waste – Contact Technical Support @ 1-800-579-2255

vi
1 Introduction
Intended Use of the AVOXimeter 4000
The AVOXimeter 4000 is a battery-operated desktop whole blood oximeter that performs
individual point-of-care measurements of total hemoglobin (tHb), oxyhemoglobin saturation
(%02Hb), carboxyhemoglobin (%COHb), and methemoglobin (%MetHb) on freshly-drawn or
heparin- or EDTA-anticoagulated whole blood samples. Oxygen content ([02Ct]), percent
saturation (SO2) and oxygen carrying capacity (O2Cap) of the blood sample are automatically
calculated from the %Hb02and tHb measurements.
No sample preparation is required, and analysis is quickly accomplished by injecting the sample
into a disposable cuvette and inserting the cuvette into the instrument. The AVOXimeter 4000
then illuminates the sample with multiple wavelengths, records the optical density of the sample
at each of the wavelengths, and computes the results. In less than 10 seconds, the total
hemoglobin concentration and the percentages of oxyhemoglobin, carboxyhemoglobin, and
methemoglobin in the sample are shown in appropriate units on the liquid-crystal display on the
front panel.
Data management capabilities are included with the instrument. These capabilities include
storage of up to 100 patient or QC results, designation of quality control levels and lot numbers,
tagging of test results with date, time, Patient ID and/or Operator ID, and printing of results.
In vitro diagnostic use, For Professional Use, Rx Only
Summary and Explanation of the Test
The AVOXimeter 4000 measures whole blood tHb, %02Hb, %COHb, and %MetHb using
disposable single-use cuvettes. The operator inserts a whole blood sample into a cuvette, the
cuvette is inserted into the test chamber on the instrument, and the results are displayed. The
results will remain on the display after the cuvette is removed from the instrument until any key is
pressed, clearing the screen.
The result can be automatically printed along with the time and date the test was run, the Patient
ID, Operator ID, and other information entered. The result is also saved in an internal database,
which has the capability to store up to 100 results.
Up to three liquid control lot numbers for each level of Liquid Quality Control (LQC) can be stored
in the AVOXimeter 4000 and must be tagged to the stored or printed records. Cuvette lot
numbers can also be tagged to the LQC records. The instruments can be configured so that only
authorized operators can operate the system and that patient IDs can be entered for each test
run.
The AVOXimeter 4000 measures oxygenated hemoglobin (O2Hb), reduced hemoglobin (HHb),
methemoglobin (MetHb), and carboxyhemoglobin (COHb) directly, using novel optics and
multiple wavelengths. This reduces interference from dyshemoglobins and other interfering
substances such as fetal hemoglobin and bilirubin and minimizes the effects of hemolysis.

AVOXimeter 4000 Operator’s Manual
7
The measured values are used to calculate total hemoglobin (tHb) and percent oxyhemoglobin
saturation [%02Hb] of the sample, using the fractional method described below:
(tHb) = (O2Hb) + (HHb) + (MetHb) + (COHb)
%O2Hb =
(O2Hb) x 100
(tHb)
Oxygen content [O2Ct] of the sample is then calculated:
O2Ct =
1.39 x tHb x % O
2
Hb
100
where 1.39 is the amount of oxygen assumed to be carried by one gram of oxygenated
hemoglobin (Hϋfner’s Number). Depending on your facility protocols, the Hϋfner’s Number stored
in the AVOXimeter 4000 can be set at any value in the range of 1.30 to 1.39 (see page 30).
Glossary of Abbreviation Equivalents
In some cases, the display screen of the AVOXimeter 4000 does not show the most commonly
used format for a specific constituent’s abbreviation. Below is a glossary of abbreviation
equivalents to ensure that users fully understand each reading on the AVOXimeter 4000 display.
Constituent
AVOXimeter 4000
Display
Conventional
Equivalent
Total Hemoglobin
tHb
tHb
Fractional O2 Saturation
sO2
SO2
Oxygen Content
O2Ct
O2Ct
Carboxyhemoglobin
COHb
COHb
Methemoglobin
MetHb
MetHb
Oxyhemoglobin Saturation
%O2Hb
%O2Hb

AVOXimeter 4000 Operator’s Manual
8
Operating Precautions and Warnings
●For in vitro Diagnostic use.
●Do not allow blood, water, or other liquids to enter the instrument.
●The AVOXimeter 4000 instrument is designed for use only with AVOXimeter 4000
cuvettes.
●Do not re-use test cuvettes.
●Always keep cuvettes in sealed bag with desiccant, and replace desiccant if the
indicator dot on the desiccant pack indicates the presence of mositure.
●When filling cuvette, do not use excessive pressure on the syringe or cause the
vent patch to bulge outward by overfilling the cuvette.
●For proper calibration and calibration verification, use only the controls recommended
in this manual. Controls from other sources may yield erroneous results.
●The AVOXimeter 4000 instrument is designed to be used for testing in a stationary
position. DO NOT perform testing while carrying or holding the instrument.
●In order to charge the AVOXimeter 4000 instrument, the AC power cord should be
plugged into an electrical service outlet and the AC/DC power module while the DC
power cord from the AC/DC power module is plugged into the DC port in the back
of the instrument.
●DO NOT expose the AVOXimeter 4000 instrument to extreme temperature (above
35°C, 95°F). Such exposure could affect the performance of any type of electronic
instrumentation.
●DO NOT drop the AVOXimeter 4000 instrument, and do not use the results if the
instrument is dropped during a test.
●Only properly qualified personnel should attempt to open and perform work on the
AVOXimeter 4000 instrument as identified in this manual.
●DO NOT remove the AC/DC power module from the AVOXimeter 4000 instrument
by pulling on the cord.
The use of accessory equipment (e.g., printers, etc.) not identified in this manual either
in the patient vicinity, or that does not comply with either the equivalent safety
requirements of this equipment or IEC/EN 61010-1:2010 or IEC/EN 61010-2-101:2002,
may lead to a reduced level of safety with the resulting system.
Any items exposed to human blood, plasma or serum must be handled cautiously as a
biohazardous material in accordance with laboratory safety practices and federal and
local regulations. Federal, state and local laws and regulations require that hazardous
waste be disposed of in a specific manner. Waste material from the AVOXimeter 4000
which may be classified as biohazardous include used cuvettes. It is important that
steps be taken to dispose of these materials in accordance with the prevailing
regulations in your location.

AVOXimeter 4000 Operator’s Manual
9
Limitations
Do not disturb the instrument while a test is in progress.
As with all diagnostic tests, AVOXimeter 4000 test results should be scrutinized in light of a
specific patient’s condition and therapy. Any results exhibiting inconsistency with the patient’s
clinical status should be repeated or supplemented with additional test data.

AVOXimeter 4000 Operator’s Manual
10
2 Description
The AVOXimeter 4000 (Figure 1) is a tabletop device for use at the bedside. It contains a test
chamber which performs all operations to measure the concentrations of reduced oxyhemoglobin
(HHb), oxyhemoglobin saturation (%02Hb), carboxyhemoglobin (COHb), and methemoglobin
(MetHb) of a whole blood sample after the operator inserts a test cuvette containing the sample
into the test chamber.
The concentration of total hemoglobin (tHb), the relative fractions of carboxyhemoglobin
(%COHb) and methemoglobin (%MetHb), and the oxygen content (02) of the blood sample are
then automatically calculated and reported.
Each AVOXimeter 4000 is calibrated at the factory. The AVOXimeter 4000 can be operated either
from its internal batteries or from the AC adapter. The batteries are charged whenever the AC
Adapter is connected.
Figure 1. AVOXimeter 4000 Oximeter
Front Panel
The front panel (Figure 2) contains the test chamber, a keypad with the key, action and
menu keys, number keys, and a display panel. Operator instructions are shown on the display
panel, and the operator enters commands and information using the keypad.
When the test is completed, the results are shown on the display panel and stored in system
memory for current or future printing.
The display panel is illuminated to enhance visibility in low light conditions. The illumination can
be adjusted (or turned off) to conserve power during battery operation.
Test Cuvette
Finger Grip
Display
Panel
Keypad
Test Cuvettes
Optical QC
Filters
Printer (Optional)
Test Chamber
Temperature
Probe

AVOXimeter 4000 Operator’s Manual
11
Figure 2. Front Panel
Keypad
The routine analysis of blood samples does not require the use of menus or the numeric keypad.
However, these enable the user to take advantage of many useful features.
The purpose of each key is summarized below:
Key
Purpose
Switch the instrument on. Select a command.
Display a menu of commands for calibration, printing, stored
data, and shutdown.
Display a menu of commands for entering hemodynamic
variables, entering device settings, entering the time and date,
viewing battery status and temperature, and managing data.
Print the results that are displayed.
and Respond to questions that are displayed.
Backspace over a numerical entry (such as a QC lot number) so
that it can be corrected.
Return to the previous menu.
to
Enter characters for Operator IDs or Patient IDs. Enter a
character for selection of a command.
Test Chamber Number Keys (White)
Action Keys
(Grey)
Enter/On Key
(Red)
Menu Keys
(Grey)
Display
Panel

AVOXimeter 4000 Operator’s Manual
12
Menus
The principal menus, their commands, and the procedure to access each menu are summarized
below:
Note:
Press the button at any time to return to the previous menu.
Menu
Commands
Access
Main Menu
Press the key when a test is not
running or another menu is not active.
Calibration
Submenu
Press followed by while the
main menu is displayed.
Printer Mode
Submenu
Press followed by while the
main menu is displayed.
Stored Data
Submenu
Press followed by while the
main menu is displayed.
Data Menu
Press the key when a test is not
running or another menu is not active.
Data Management
Submenu
Press followed by while the
data menu is displayed.
Device Settings
Submenu (Page 1)
Press followed by while the
data menu is displayed.
Device Settings
Submenu (Page 2)
Press followed by while
Page 1 of the device settings menu is
displayed.
Time, Date, and
Temperature
Submenu
Press followed by while the
data menu is displayed.

AVOXimeter 4000 Operator’s Manual
13
Test Cuvettes
Tests are performed with single-use disposable test cuvettes (Figure 3). Each test cuvette
contains a finger grip, filling port, optical window, and a vent patch.
Figure 3. Test Cuvette
A whole blood sample is inserted into a test cuvette by connecting a small syringe containing the
whole blood sample to the filling port and then gently pressing the syringe plunger to dispense
approximately 50 µL of whole blood into the test cuvette. Air escapes from the vent patch at the
end of the test cuvette while the whole blood sample is being inserted. The test cuvette (with the
syringe still attached) is then inserted into the test chamber of the instrument (see page 33 for
details).
Note: Be sure to handle the cuvette either by the edges or by the finger grip. Refer to the
package insert accompanying the test cuvettes for storage and handling instructions.
●Remove any blood or debris from the exterior of the test cuvette before
inserting it into the test chamber.
●After filling the cuvette with blood, inspect the vent patches to ensure they
are not bulging out. If a vent patch protrudes, discard the cuvette. Do not
insert a cuvette with a protruding vent patch into the test chamber.
BIOHAZARD WARNING: Any items exposed to human blood, plasma or serum
must be handled cautiously as a biohazardous material in accordance with
laboratory safety practices and federal and local regulations. Federal, state and
local laws and regulations require that hazardous waste be disposed of in a
specific manner. Waste material from the AVOXimeter 4000 which may be
classified as biohazardous include used cuvettes. It is important that steps be
taken to dispose of these materials in accordance with the prevailing regulations
in your location.
Filling Port
Light Path
Vent Patch
Optical
Window
Finger Grip

AVOXimeter 4000 Operator’s Manual
14
BIOHAZARD WARNING: Any items exposed to human blood, plasma or serum
must be handled cautiously as a biohazardous material in accordance with
laboratory safety practices and federal and local regulations. Federal, state and
local laws and regulations require that hazardous waste be disposed of in a
specific manner. Waste material from the AVOXimeter 4000 which may be
classified as biohazardous include used cuvettes. It is important that steps be
taken to dispose of these materials in accordance with the prevailing regulations
in your location.
Connections
Connections to the power supply and an optional printer (or a computer) are made at the rear of
the instrument (Figure 4).
Use only the power supply provided with the instrument.
Figure 4. Rear Panel Components
Automatic Standby and Shutdown
The AVOXimeter 4000 enters a low-power standby mode after the instrument has been idle for a
specified period of time (the standby delay). The instrument is factory preset for a standby delay
time of 60 minutes, but a time of 10 to 180 minutes can be specified (see page 22). To resume
normal operation when the instrument is in standby, press and hold down any key for one
second.
Note: The AVOXimeter 4000 also enters standby if the battery charge becomes critically
low.
The AVOXimeter 4000 shuts down after it has been in standby for 4 hours.
Printer or Computer Temperature Sensor
Connector Connector
AC Adapter
Connector
Serial Number
Label
Carrying
Handle

AVOXimeter 4000 Operator’s Manual
15
Instrument Specifications
Size
20.3 cm (8.0 in) x 25.4 cm (10.0 in) x 9.5 cm (3.8 in)
Weight
1.8 kg (4 lbs)
Operating Temperature
Room temperature (15°C to 30°C, 59°F to 86°F)
Battery Type
Nickel Cadmium (NiCad)
Operating Time On Battery
Approximately 8 hours (constant run) or 10 complete test cycles
per charge. Tests may also be run while the AVOXimeter 4000
is plugged into the AC/DC power module.
Anticipated Battery Life Approximately 500 charge / discharge cycles
Power Supply/Chargers Input: 100 / 240 VAC, 50 / 60 Hz
Output: 12 VDC, 800 mA
Serial Data Port RS232C
Sample Type Whole blood
Sample Volume 50 µL
Analysis Time 7 to 10 seconds per sample
Analysis Wavelengths 5
Reportable Range
tHb
4 to 25 g/dL
%O
2
Hb
0 to 100%
%COHb
0 to 75%
%MetHb
0 to 85%
[O
2
]
0 to 35 mL O
2
/dL
Accuracy
tHb (>10 g/dL)
±0.45 g/dL
tHb (<10 g/dL)
±0.35 g/dL
%O
2
Hb
±1.6%
%COHb
±2%
%MetHb
±1.5%
Precision
tHb
0.3 g/dL
%O
2
Hb
0.8 % O
2
Hb
%COHb
1 % COHb
%MetHb
0.7 % MetHb

AVOXimeter 4000 Operator’s Manual
16
Interferences
tHb %O2Hb %COHb %MetHb
Bilirubin
(11 mg/dL)
None None < 1% < 1%
Hemolysis
None None < 1% < 1%
Fetal Hemoglobin
(tHb = 13.5 g/dL, HbF = 100%
< 0.45 g/dL < 1% < 0.6% per
%HbF < 1%
Indocyanine Green Dye
(<10 mg/L)
< 0.45 g/dL < 1% < 1% < 1%
Methemoglobin
(tHb = 16 g/dL, MetHb <10%,
7.1 < pH < 7.8)
< 0.2 g/dL < 1%
Calibration
The AVOXimeter 4000 is factory-calibrated and employs highly stable state-of-the-art light
sources. Should recalibration be required please contact a Technical Support representative.
Proper calibration also requires entry of the correct cuvette pathlength by the user (see page 30)
and use of a customary value for Hüfner’s number (see page 30).
CAUTION:If quality control results are not acceptable, erroneous results are
encountered, or error messages are displayed, the most likely cause may be
contamination of the optical detector by blood or debris, which cannot be resolved by
re-calibration. Consult the Troubleshooting section for additional information.

AVOXimeter 4000 Operator’s Manual
17
3 Getting Started
Unpacking and Inspection
Note: Inspect each component for damage when unpacking. If damage is observed, contact
your shipping representative immediately.
1. Remove any protective packaging that may be present around the instrument.
2. Examine the packaging material to be sure that the AC Adapter, temperature
probe, connecting cables, or other components have been removed. The
materials that are provided are listed below.
Note: Do not discard the packaging material. It should be preserved for
future use, in the event that it is necessary to re-pack the instrument for
shipping or transport.
Materials Provided
Item
Quantity
AVOXimeter 4000 Instrument 1
Power Supply 1
Temperature Probe 1
Operator’s Manual 1
Quality Control Filters 2
Note: An AC power cord is supplied only for the 110VAC version of the US/Canada/Japan
instrument. For all others, the customer must obtain a 3 conductor AC power cord
that is compatible with an IEC 320 connection at the power supply AC inlet and any
other local requirements.
Materials Required But Not Provided
Item
Quantity
AVOXimeter 4000 Cuvettes As Needed
Liquid Controls (Manufactured by RNA)
See page 41 for additional information As Needed

AVOXimeter 4000 Operator’s Manual
18
Optional Materials
Item
Quantity
Dymo Printer
•110 V
•220 V
1
Printer Paper As Needed
Charging the Batteries
Charge the batteries before the system is used for the first time.
1. Plug the AC Adapter into an electrical service outlet.
2. Connect the AC Adapter cord to the power connector on the rear of the instrument.
3. Allow the battery to charge for at least eight hours.
Note: The AC Adapter can remain connected all the time.
4. To ensure adequate charge, leave the instrument connected to the AC Adapter
for a minimum of eight hours. This eliminates the risk of the instrument powering
down during a test.
Fully charged batteries will allow the AVOXimeter 4000 to analyze blood samples continuously for
up to 8 hours when the display is set at medium brightness.
Battery power can be conserved by:
●Reducing (or turning off) display backlighting (see page 19).
●Reducing the standby delay (see page 22).
Note: The batteries can suffer from a “memory effect” if they are charged before being completely
discharged. For optimal battery performance, discharge completely when possible before
charging them. The message “Battery Critical – Connect Charger” will be displayed when
the battery is completely discharged.
The message “Battery Critical – Connect Charger”is displayed and the instrument reverts to
the standby mode if the battery power is insufficient to complete the test. The AC Adapter must
be used for additional tests until the battery is recharged.
Checking the Battery:
1. Display the “Time, Date, and Temperature” menu (a submenu of , see page
12).
2. Press followed by to display the battery status:

AVOXimeter 4000 Operator’s Manual
19
3. Press to display the time, date, and battery menu again.
4. Press to return to the previous menu, if desired.
Setting Up the Instrument
The user can specify the display brightness, specify the units that are used for reporting total
hemoglobin (tHb), change the date and time, and specify the length of time that the instrument is
idle before it enters the standby mode.
Setting Display Backlighting
Lighting of the display can be reduced to conserve battery power or increased to improve
visibility.
1. Display the “Device Settings” menu (a submenu of , see page 12).
2. Press followed by to display the screen for changing the LCD
backlighting:
3. Select the backlighting level (or turn it off) by pressing the corresponding number
key followed by . The backlighting changes accordingly.
4. Press to display the “Device Settings” menu again.
Specifying Units for Total Hemoglobin (tHb)
Measured values of total hemoglobin can be expressed in units of mmol/L or gm/dL.
1. Display the “Device Settings” menu (a submenu of , see page 12).
2. Press followed by to display the screen for changing the units for total
hemoglobin:
3. Press followed by to change the units, or press followed by
when the desired units are displayed. The “Device Settings” menu is again
displayed.
4. Press to return to the previous menu, if desired.

AVOXimeter 4000 Operator’s Manual
20
Enabling or Disabling Display of SO2, O2Ct, and O2Cap
Display of calculated oxygen content (O2Ct), percent saturation (SO2) and oxygen carrying
capacity (O2Cap) of the blood sample can be enabled or disabled.
Note:
Oxygen content (O
2
Ct), percent saturation (SO
2
), and oxygen carrying capacity
(O2Cap) are automatically calculated for each test.
When display of these values is enabled, these values are displayed on the
second page (of three pages) when results are reviewed in the ‘stored data’ menu
(see page 37), and they are included in printed test results.
Only measured values of tHb, %HbO2, %COHb, and %MetHb are displayed on the
instrument display panel after a test is run, regardless of whether display of
calculated oxygen content (O2Ct), percent saturation (SO2), and oxygen carrying
capacity (O2Cap) of the blood sample is enabled.
1. Display the second page of the “Device Settings” menu (a submenu of ).
2. Press followed by to display the screen for enabling or disabling display
of calculated (O2Ct), (SO2), and (O2Cap) for each test:
3. Select the appropriate option by pressing the corresponding number key followed
by . A corresponding confirmation prompt is displayed.
4. Press to return to the previous menu, if desired.
Enabling or Disabling Suppression of Negative Values
Users can choose to display or suppress negative values.
Note:
Negative values may occur because in some cases, due to instrument precision
ranges, a very low Met- or Carboxyhemoglobin value may read as a negative
value. Users can choose to suppress negative values, and have them read as ‘0’.
1. Display the second page of the “Device Settings” menu (a submenu of , see
page 12).
2. Press followed by to display the screen for enabling or disabling display
of negative values:
3. Select the appropriate option by pressing the corresponding number key followed
by . A corresponding confirmation prompt is displayed. Press to return
to the previous menu, if desired.