OBELAB NIRSIT LITE User manual

Before Using Our Product
i
Before Using Our Product
Thank you for purchasing NIRSIT-Lite. NIRSIT-Lite is functional Near-Infrared spectroscopy
device made by OBELAB Inc. It is a device designed to measure variations in cerebral blood
oxygen saturation by radiating a near-infrared light beam, at two wavelengths of 780 nm and
850 nm, into the cerebral cortex. The device radiates a LED light with a output of 1 mW or
less which is harmless to the human body. The device comes with PC software you can use to
monitor the distribution of cerebral oxygen saturation via multiple channels. This product
comes in two versions: NIRSIT Lite for adults and NIRSIT Lite for children.
This user manual contains important information regarding the use of the device. Please read
this manual carefully before using the device. Keep this manual within easy reach for future
reference.
Please contact us if you have questions about this manual or the product purchased.
▪Manufacturer: OBELAB Inc.
▪Address: 12F, Vision Tower, 312, Teheran-Ro, Gangnam-gu, Seoul, Korea
▪Tel: [phone]
▪Fax: [phone]
▪Email: [email protected]
▪Website: http://www.obelab.com
▪Version: v1.0

Warranty and Liability
ii
Warranty and Liability
Warranty
OBELAB Inc. warrants the quality of this product as specified below
Warranty Service
Free repair service is provided within warranty period (1 year from the date of purchase) to
the damaged device due to component failure during proper operation.
Charged Service
Service is charged when the following cases apply:
1 Out of warranty period
2 Within warranty period
a. Repairs resulting from natural disasters (lightning, fire, earthquake, storm, flood, etc.)
b. Repairs resulting from a device failure or damage caused by user mishandling (impact,
dropping)
c. repairs resulting from old or worn out consumables (battery, cable, etc.) that need
replacement
d. repairs resulting from a device failure due to unauthorized repair or modification
e. repairs resulting from the use of unauthorized components
f. repairs resulting from services performed by an unauthorized person or entity
Notice
For matters that are not specified in this document, the Act on Consumer Protection of Korea
and relevant regulations on compensation for consumers shall apply. For other repairs and
questions, please contact your dealer or the OBELAB Customer Support Center.
Request for service on a functioning device will result in service charges. Please read the User
Manual.
This warranty is only valid in the Republic of Korea, and not to be re-issued. Please store the
warranty in a safe place or send a scanned copy to OBELAB ([e-mail]).
For other repairs and any service-related questions, please contact your dealer or the OBELAB
Customer Support Center.

Copyrights
iii
Copyrights
This manual is the property of OBELAB Inc. and protected by copyright law. Unauthorized use
or reproduction, in whole or part, is strictly forbidden.
Contents of this user manual are subject to change without notice, regarding changes to the
performance or specifications of the device. For information on the device and user manual,
please contact the OBELAB Customer Support Center.
Copyright ⓒ2019 All Rights Reserved.

History of Revision
iv
History of Revision
Version
Revised date
Details
Remarks
1.0
2020/01/03
Initial edition
3.5
2021/04/19
Add an additioanl BLE Dongle setting
and marker type setting

Table of Contents
v
Table of Contents
Before Using Our Product............................................................................................ i
Warranty and Liability................................................................................................ ii
Copyrights ..................................................................................................................iii
History of Revision .....................................................................................................iv
Table of Contents ........................................................................................................v
1. Overview ......................................................................................................... 1
1.1 Safety Instructions ........................................................................................................ 1
1.1.1 User Qualification .............................................................................................. 1
1.1.2 Electrical Safety Instructions .............................................................................. 1
1.1.3 General Safety Instructions ................................................................................ 2
1.1.4 When cleaning the device .................................................................................. 2
1.2 Symbols Used ............................................................................................................... 3
1.3 Guideline for equipment disposal.................................................................................... 4
1.4 Notation ....................................................................................................................... 5
2. Using NIRSIT-Lite............................................................................................ 6
2.1 Names and Locations of Components ............................................................................. 6
2.2 Basic Components ......................................................................................................... 7
2.3 Battery ......................................................................................................................... 7
2.3.1 Charging the Battery ......................................................................................... 8
2.3.2 Checking Battery Level ...................................................................................... 9
2.4 Sensor Module Position.................................................................................................10
3. Before Using NIRSIT-Lite Software............................................................... 11
3.1 Preparing to wear.........................................................................................................11
3.1.1 Installing the Strap ...........................................................................................11
3.1.2 Checking Operation Status ................................................................................12
3.2 Turning on the device ...................................................................................................12

Table of Contents
vi
3.3 Putting on the device ...................................................................................................13
3.4 Installing the Software .................................................................................................14
3.5 Running the Software...................................................................................................14
3.6 Connecting to the device ..............................................................................................15
4. Using NIRSIT-Lite Software .......................................................................... 17
4.1 PC Software Structure ..................................................................................................17
4.2 Setting Serial Port ........................................................................................................18
4.2.1 Connecting to Serial Port ..................................................................................18
4.3 Gain Calibration ...........................................................................................................20
4.4 MONITORING ..............................................................................................................21
4.4.1 MONITORING Mode Screen Overview................................................................22
4.5 REPLAY .......................................................................................................................24
4.5.1 REPLAY Screen Overview ..................................................................................24
5. Maintenance .................................................................................................. 25
5.1 Replacing Accessories and Components .........................................................................25
5.1.1 Replacing Straps ..............................................................................................25
5.2 Cleaning ......................................................................................................................25
5.2.1 Cleaning Silicone padded sensors ......................................................................25
5.2.2 Cleaning NIRSIT-Lite ........................................................................................25
6. Troubleshooting............................................................................................. 26
7. 7. Product Specifications ............................................................................... 27
7.1 Mechanical Characteristics ............................................................................................27
7.2 Technical Characteristics ...............................................................................................27
7.3 Electrical Characteristics ...............................................................................................28
7.4 PC Requirements..........................................................................................................28
7.5 Environmental Requirements ........................................................................................28
8. Appendix........................................................................................................ 29
8.1 Guidance and Manufacturer’s Declaration ......................................................................29
8.1.1 Guidance and Manufacturer’s Declaration – Electromagnetic Emissions................29
8.1.2 Guidance and Manufacturer’s Declaration – Electronmagnetic Immunity ..............30

Table of Contents
vii
8.1.3 Guidance and Manufacturer’s Declaration – Electronmagnetic Immunity –
Equipment & Systems that are NOT life supporting..........................................31
8.1.4 Recommended separation distances between portable and mobile RF
communications equipment and the system ....................................................32

Overview
1
1. Overview
1.1 Safety Instructions
Safety instructions are provided to ensure user safety and prevent property damage. Please
read the following safety instructions and warnings before using the device.
▪WARNING Symbol
WARNING
Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury. Failure to comply with a warning could
result in severe damage to the device.
▪CAUTION Symbol
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury. Failure to comply with a caution may
result in damage to the device.
▪IMPORTANT Symbol
IMPORTANT
Indicates instructions that users must observe or refer to. All users must
check and follow the instructions.
1.1.1 User Qualification
IMPORTANT
To use the device, the user must
▪Read and understand this user manual.
▪Understand the basic structure and features of the device.
▪Be able to detect abnormal operation and take appropriate measures.
▪Be at least 15 years old and have reading experience for at least five
years.
▪Be capable of understanding numbers and languages without
difficulty, have knowledge of oxygen saturation measurement
principles, and have experience using the device or previous training.
1.1.2 Electrical Safety Instructions
WARNING
▪Always check the condition of the power supply, computer, tablet, and
cable connections before using the device.
▪Ensure that the battery is not replaced by an unauthorized user. There
is risk of overheating, fire, and explosion.
▪Do not disassemble the device for maintenance or repair when it is
connected to a power supply.

Overview
2
CAUTION
Make sure to turn off the device when it is not in use.
1.1.3 General Safety Instructions
WARNING
▪Do not use the device in a place where there is a risk of explosion.
▪Keep the device away from inflammables.
▪Do not stare directly into the sensor unit or LED.
▪Do not operate the device with wet hands.
▪Do not arbitrarily disassemble, repair, or modify the device. Inspection
and repair must only be performed by certified professionals. For
technical support, please contact the nearest Customer Support
Center.
CAUTION
▪Do not use the device on a patient who has a stab wound on the
forehead or who is undergoing surgery.
▪Keep the device away from water, humidity, and/or contaminants.
▪To ensure safety, follow the instructions described in this user manual
when using the device.
▪Never let the device drop. Do not expose the device to excessive
shock.
▪Always keep the device in the storage case when not in use.
IMPORTANT
This device is intended for research purposes only and must be used by
researchers or personnel that have been sufficiently trained in its use.
▪Use the device with the dedicated software.
▪Use the device under indoor lighting condition.
▪Ensure that a fire extinguisher is within reach.
▪Use the device at optimal temperature (15-35℃) to ensure safe
operation.
▪Store the device away from direct sunlight.
1.1.4 When cleaning the device
WARNING
Do not spray disinfectant on the device. Sprayed disinfectant can cause
ignition.
CAUTION
Do not use wet or damp clothes or spray cleaners. There is risk of electric
shock and damage to the device.

Overview
3
1.2 Symbols Used
A list of symbols found in this manual and on the label on the device is shown below. It is
important to understand these indications, and to follow the safety instructions.
Table 1-1 Symbols Used
Symbol
Name
Description
WARNING
WARNING
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Failure to comply with a warning could result in
severe damage to the device.
CAUTION
CAUTION
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate
injury. Failure to comply with a caution may result
in damage to the device.
IMPORTANT
IMPORTANT
Indicates instructions that users must observe or
refer to. All users must check and follow the
instructions.
NOTE
NOTE
Additional information that aids in device operation.

Overview
4
1.3 Guideline for equipment disposal
Figure 1-1 WEEE label (Directive 2002/96/EC)
Please dispose of the device according to your local regulations. The product contains
components that can be recycled. Please recycle products to protect the environment. All of
the product components, except for the battery, can be recycled. Plastic parts may be recycled,
or burned in a controlled environment, depending on local laws.
NOTE
Please consult OBELAB, its resellers, or other disposal agencies for more
information regarding disposal.

Overview
5
1.4 Notation
Notation is a series of special symbols or conventions used in this manual to denote different
items.
This manual uses the following notation for users’ better understanding of the device:
Table 1-2 Notation Used in the Manual
Notation
Decryption
“”
Used to denote a reference.
Example: See "Chapter 1. Overview."
Bold
Used to denote GUI elements such as menus and buttons.
Example: Click the STOP button.
>
Used to list several menus or buttons in sequence.
Example: Click the STOP > OPEN buttons.
Used to divide or list items of the same level in an organized way.
Used to describe a work procedure in order.
Used to name or describe components of an image.

Using NIRSIT-Lite
6
2. Using NIRSIT-Lite
2.1 Names and Locations of Components
Figure 2-1 Components of the System
Table 2-1 Components and Their Functions
No.
설명
1
Strap
2
Power button
3
Silicone padded Sensors
4
5-pin micro connector
5
Status Indicator (Bluetooth)
6
Status Indicator (Power)
7
Status Indicator (Charging)

Using NIRSIT-Lite
7
2.2 Basic Components
When opening the package, please make sure to check the components and inform the
OBELAB Customer Support Center if there are any issues with the package.
NIRSIT-Lite
Strap
USB 2.0 Cable
BLE dongle (BLED112)
Storage and carry-on box for NIRSIT LITE
USB Memory stick with
PC software and Manual
NOTE
To purchase accessories, please contact OBELAB or an authorized dealer.
BLE Dongle specifications: Sinicon Labs, BLED112, BLE v4.0 CE, FCC, IC,
KC certified
Tx: +0dBm to -27dBm, Rx: -91dBm
Interface: USB (virtual COM port emulation)
2.3 Battery
NIRSIT is powered by a lithium-ion polymer battery. For prolonged use, charge the battery at
least 1 hour and 30 minutes before operating the device. Regularly check the remaining
battery level to ensure availability.

Using NIRSIT-Lite
8
2.3.1 Charging the Battery
Charge the battery by connecting the NIRSIT-Lite via a USB cable to a power adaptor.
NOTE
▪For the power adapter, must use an IEC60950-1 certified adapter for
the charging adapter.
Input: AC 100-240V, 50/60Hz 0.4A, Maximum output: DC 5V, 2.1A

Using NIRSIT-Lite
9
2.3.2 Checking Battery Level
Charging in Progress
Fully Charged
Red LED Off
Charging Mode
Make sure that the device is off before you charge.
Measurement cannot be performed while charging
Red LED On

Using NIRSIT-Lite
10
2.4 Sensor Module Position
The below picture shows the difference between LED modules and detector modules in terms
of external appearance.
Optical Safety
The device uses LED Light Sources which is harmless to human body.