Huvitz HNT-1 User manual

Non-Contact Tonometer
HNT-1 / 1P
User Manual

2
Important Notice
This product may malfunction due to electromagnetic waves caused by portable
personal telephones, transceivers, radio-controlled toys, etc. Be sure to avoid having
objects such as, which affect this product, brought near the product.
The information in this publication has been carefully checked and is believed to be
entirely accurate at the time of publication. HUVITZ assumes no responsibility,
however, for possible errors or omissions, or for any consequences resulting from
the use of the information contained herein.
HUVITZ reserves the right to make changes in its products or product specifications
at any time and without prior notice, and is not required to update this documentation
to reflect such changes.
9000ENG0030-A
Ver 0.2 (2017.03.)
ⓒ2016-2017 Huvitz Co., Ltd
38, Burim-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14055, Republic of
Korea
All rights reserved. Under copyright laws, this manual may not be copied, in whole or
in part, without the prior written consent of Huvitz Co.,Ltd.

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HNT-1/1P
CONTENT
1. INTRODUCTION...........................................................................................................5
1.1. INTENDED USE........................................................................................................5
1.2. OVERVIEW..............................................................................................................5
1.3. CLASSIFICAITON ....................................................................................................5
2.SAFETY INFORMATION................................................................................................6
2.1. OVERVIEW..............................................................................................................6
2.2. SYMBOL EXPLANATION ............................................................................................7
2.3. ENVIRONMENTAL CONSIDERATIONS ..........................................................................9
2.4. SAFETY PRECAUTION ............................................................................................ 11
3. CHARATERISTICS .....................................................................................................15
4. NOTE FOR USE .........................................................................................................16
5. NAMES AND FUNCTIONS OF EACH PART ..............................................................18
5.1. MAIN PARTS .........................................................................................................18
5.2. EXPLANATION OF MAIN SCREEN .............................................................................21
5.2.1. Main Screen of HNT-1 ....................................................................................21
5.2.2. Main Screen of HNT-1P..................................................................................27
6. INSTALLATION OF EQUIPMENT & PREPARATION OF MEASUREMENT ...............30
7. BASIC OPERATIONS .................................................................................................32
7.1. MEASUREMENT.....................................................................................................33
7.2. MANUAL MEASUREMENT MODE..............................................................................35
7.3. AUTO MEASUREMENT MODE ..................................................................................42

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8. OTHER MODES..........................................................................................................47
8.1. SETUP MODE ......................................................................................................47
8.2. RESULT MODE ......................................................................................................61
8.3. PACHY IMAGE MODE (ONLY IN HNT-1P)..................................................................64
8.4. ACA MODE (ONLY IN HNT-1P)...............................................................................67
8.4.1 Enlarged ACA Image Screen.........................................................................68
8.5. POWER SAVING MODE .............................................................................................69
9. MEASUREMENT ........................................................................................................70
9.1. BEFORE CALLING FOR SERVICEMAN ........................................................................70
9.1.1. Self diagnosis & Maintenance ......................................................................70
9.2. REPLACEMENT......................................................................................................72
9.2.1 Printer paper .................................................................................................72
9.2.2 Chinrest paper...............................................................................................73
9.2.3 Replacing Fuse .............................................................................................74
9.3. CLEANING.............................................................................................................74
9.4. AS CHANGING THE INSTALLATION PLACE OF THE EQUIPMENT .....................................75
10. SERVICE INFORMATION .........................................................................................76
11. MANUFACTURER.....................................................................................................77
12. EMC (ELECTROMAGNETIC COMPATIBILITY) INFORMATION ..............................78
13. SPECIFICATIONS.....................................................................................................80
14. ACCESSORIES ........................................................................................................82

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HNT-1/1P
Introduction
1.1. Intended Use
The Non-Contact Tonometer HNT-1 is intended to be used to measure the intraocular
pressure of the human eye. HNT-1P is also provided measurement of patient’s central
corneal thickness, as well as HNT-1’s function.
1.2. Overview
The Non-Contact Tonometer HNT-1/1P is indicated for measuring intraocular
pressure to aid in the screening and diagnosis of glaucoma.
Non-contact Tonometer HNT-1/1P measured intraocular pressure of both eye by Auto
alignment function. In particular, when a lot of lights are sensed the moment that
compressed air is separated, prescription about glaucoma is possible by system that
convert time to mmHg intraocular pressure after measure microseconds.
Automatic and passivity compensation function of measurement by cornea thickness
are possible, It supply optimum intraocular pressure information.
1.3. Classificaiton
•Classification of product : Class IIa according to Annex IX (Rule 10) of the Medical
Device Directive 93/42/EEC as amended by 2007/47/EC
•Resistance against electric shock : Class I (earthed)
•Protection class against electric : Type B(Head rest, chinrest paper)
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United Stateds Federal law restricts this device to the sale, distribution and use by
or on the order of an ophthalmologist or optometrist.
Safety Information
2.1. Overview
Safety is everyone’s responsibility. The safe use of this equipment is largely
dependent upon the installer, user, operator, and maintainer. It is imperative that
personnel study and become familiar with this entire manual before attempting to
install use, clean, service or adjust this equipment and any associated accessories. It
is paramount that the instructions contained in this manual are fully understood and
followed to enhance safety to the patient and the user/operator. It is for this reason that
the following safety notices have been placed appropriately within the text of this
manual to highlight safety related information or information requiring special emphasis.
All users, operators, and maintainers must be familiar with and pay particular attention
to all Warnings and Cautions incorporated herein.
“Warning” indicates the presence of a hazard that could result in severe personal
injury, death or substantial property damage if ignored.
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!
WARNING
!
CAUTION

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HNT-1/1P
“Note” describes information for the installation, operation, or maintenance of
which is important but hazard related if ignored.
“Caution” indicates the presence of a hazard that could result in minor injury, or
property damaged if ignored.
2.2. Symbol Explanation
The International Electrotechnical Commission (IEC) has established a set of symbols
for medical electronic equipment which classify a connection or warn of any potential
hazards. The classifications and symbols are shown below.
I and O on power switch represent ON and OFF
respectively.
Type B Isolated patient connection.
It indicates the connection of signal input/output.
!
NOTE
!
CAUTION

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This symbol identifies a safety note. Ensure you
understand the function of this control before using it.
Control function is described in the appropriate User’s
or Service Manual.
Hot surface.
Identifies the point where the system safety ground is
fastened to the chassis. Protective earth connected to
conductive parts of Class I equipment for safety purposes.
Manufacturer
Authorised Representative in the European Community
Temperature Limitation
Keep DRY
Warning: Crushing or insert of hand
UL Mark
CE Mark

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HNT-1/1P
2.3. Environmental Considerations
Please avoid the environment below for the operation and storage of the equipment.
A place where the equipment can be exposed to water.
Do not operate the equipment with wet hand.
A place where the equipment can be exposed to direct
sunlight.
A place where the equipment can be exposed to direct
ultraviolet.
Where the temperature changes frequently (Normal
temperature for operation of the machine is at the range of
10C ~ 35C, and the humidity is at the range of 30%~70%.
A place nearby a heating apparatus.
A place where the equipment can be exposed to water.
Do not operate the equipment with wet hand
A place where the equipment can be exposed to excessive
pressure or vibration.

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A place where the equipment can be exposed to chemical
substances or flammable gas.
Watch out for dust, especially metal pieces from entering the
equipment.
Do not disassemble the product.
Huvitz will not be held responsible for any negligence
regarding such action.
Do not close the thermal ventilation outlet
Do not connect the AC power adapter before all parts are fully
assembled. It can lead to a malfunction.
Always pull the power cord holding the plug and not the cord.
For the normal operation of the machine, please keep the ambient temperature is 10℃
~ 35℃, humidity is 30% ~ 90% and atmospheric pressure is 800 ~ 1060hpa. For the
Transfortation of the machine, please keep the ambient temperature is -40℃~ 70℃,
humidity is 10% ~ 95% and atmospheric pressure is 500 ~ 1060hpa. For the Storage
of the machine, please keep the ambient temperature is -10℃~ 55℃, humidity is 10%
~ 95% and and atmospheric pressure is 700 ~ 1060hpa. Avoid environments where
the equipment is exposed to excessive shocks or vibrations.