Huvitz HNT-7000 User manual

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User`s Manual
Auto Tonometer HNT-7000

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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..
Ver 1.0
© 2004 - 2010 –Huvitz Co..Ltd.
-689-3, Gumjeong-dong,Gunpoci, Gyeonggi-do
435-862,Republic of Korea
All rights are reserved. Under copyright laws, this manual may not be copied, in whole or
in part, without prior written consent of HUVITZ Co.,Ltd.

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Contents
1. Introduction............................................................................................................6
1.1. Overview.......................................................................................................6
1.2. Classificaiton.................................................................................................6
2. Safety Information...............................................................................................7
2.1. Overview.......................................................................................................7
2.2. Safety Symbol...............................................................................................8
2.3. Environmental Considerations.......................................................................9
2.4. Safety Precaution........................................................................................11
3. Charateristics.......................................................................................................13
4. Note for Use.........................................................................................................14
5. Names and functions of each part......................................................................15
5.1. Main parts ...................................................................................................15
5.2. Explanation Switches in Front......................................................................18
6. Installation of Equipment & Preparation of Measurement ................................19
7. Measurement .......................................................................................................21
7.1. Tonometry Measurement..........................................................................21
7.2. Manual Measurement Mode........................................................................23
7.3. Auto Measurement Mode ............................................................................30
8. Other Modes.........................................................................................................34
8.1. Compensation mode of Cornea Thickness ..................................................34

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8.1.1 Composition of Window...............................................................................34
8.1.2 DISPLAY Mode...........................................................................................35
8.2. User SETUP Mode......................................................................................36
8.3. Power saving Mode.....................................................................................41
8.4. Before calling for serviceman.......................................................................41
8.4.1 Self diagnosis & Maintenance......................................................................41
8.5. Replacement ...............................................................................................44
8.5.1 Printer paper................................................................................................44
8.5.2 Chinrest paper ..........................................................................................45
8.5.3 Replacing Fuse ...........................................................................................45
8.6. Cleaning Equipment ....................................................................................46
8.7. As changing the installation place of the equipment.....................................46
9. Service Information..............................................................................................47
10. EMC Information..................................................................................................48
10.1. Guidance and manufacturer’s declaration – electromagnetic emissions.......48
10.2. Guidance and manufacturer’s declaration – electromagnetic immunity........49
10.3. Guidance and manufacturer’s declaration – electromagnetic immunity........51
10.4. Recommended separation distances between portable and mobile RF
communications equipment and the EUT.......................................................53
10.5. Immunity and Compliance Level..................................................................54
10.6. Guidance and manufacturer’s declaration – electromagnetic immunity........55

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11. Main Specifications .............................................................................................57
12. Accessories .........................................................................................................58

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1. Introduction
1.1 Overview
Auto Non Contact Tonometer HNT-7000 is the equipment to provide.The
information of examinee`s Intraocular pressure.
Auto Non contact Tonometer HNT-7000 measured intraocular pressure of
both eye by Full-Auto button.
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.
1.2 Classificaiton
Classification of product : 2nd Grade Medical Instrument
Resistance against electric shock : Class I (earthed)
Protection class against electric : Type B

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2. 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.
NOTE
“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.
!
WARNING
!
CAUTION

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2.2 Safety Symbol
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.
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.
It indicates the year of manufacture and the manufacturer.
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.

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2.3 Environmental Considerations
Please avoid the environment below for the operation and storage of the equipment.
Where the equipment is exposed to water vapor.
Don’t operate the equipment with wet hands.
Where the machine is exposed directly to the sunlight.
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%.
Where any heaters are at the close distance to the machine.
Where the humidity is high and there are problems to the heat
dissipation and/or ventilation.
Where the equipment is subject to excessive shocks or
Vibrations.

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Where the machine can be exposed to the chemical or
flammable substances.
Please keep the equipment out of dust and do not let
inserted any metal parts such as coins, clips, etc.
Do not disassemble or open the machine. The manufacture
shall have no responsibility for any problems caused by
these.
Do not close the thermal ventilation outlet.
Do not connect theAC power plug into the outlet while not
putting the parts of machine together completely. It can
harm the equipment.
Do not pull the plug out of outlet while holding the cord.
For the normal operation of the machine, please keep the ambient temperature is 10℃
~ 35℃, humidity is 30% ~ 75% 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 30% ~ 75%
and and atmospheric pressure is 700 ~ 1060hpa. Avoid environments where the
equipment is exposed to excessive shocks or vibrations.

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2.4 Safety Precaution
This equipment has been developed and tested in conformity with domestic &
international safety standards and regulations, which guarantees the high stability of
this product. This guarantees a very high degree of safety for this device. The legislator
expects us to inform the user expressively about the safety aspects in dealing with the
device. The correct handling of this equipment is imperative for its safe operation.
Therefore, please read carefully all instructions before switching on this device. For
more detailed information, please contact our Customer Service Department or one of
our authorized representatives.
1. This equipment must not be used (a) in an area that is in danger of explosions
and (b) in the presence of flammable, explosive, or volatile solvent such as
alcohol, benzene or similar chemicals.
2. The device should neither be kept nor installed in the place with high humidity.
For the optimal operation, the humidity should be at the range of 30%~75%.
The machine should not be exposed to the place where water splashes, drips
or sprays. Do not place containers containing fluids, liquids, or gases on top of
any electrical equipment or devices
3. The equipment must be operated only by, or under direct supervision of
properly trained and qualified person/s.
4. Modifications of this equipment may only be carried out by Huvitz’s service
technicians or other authorized persons.
5. Customer maintenance of this equipment may only be performed as stated in
the User’s Manual and Service Manual. Any additional maintenance may only
be performed by Huvitz’s service technicians or other authorized persons.
6. The manufacturer is only responsible for effects on safety, reliability, and
performance of this equipment when the following requirements are fulfilled: (1)
The electrical installation in the respective room corresponds to the
specifications stated in this manual and (2) This equipment is used, operated
and maintained according to this manual and Service Manual.

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7. The manufacturer is not liable for damage caused by unauthorized tampering
with the device(s). Such tampering will forfeit any rights to claim under
warranty.
8. The equipment may only be used together with accessories supplied by
Huvitz’s. If the customer makes use of other accessories, use them only if
there are usability under technical safety aspects has been proved and
confirmed by Huvitz or the manufacturer of the accessory.
9. Only persons who have undergone proper training and instructions are
authorized to install, use, operate, and maintain this equipment.
10. User’s manual or service manual should be kept in the place where the
persons in chare of operation and maintenance can access easily any time.
11. Do not force cable connections. If a cable does not connect easily, be sure that
the connector (plug) is appropriate for the receptacle (socket). If you cause any
damage to a cable connector(s) or receptacle(s), let the damage(s) be repaired
by an authorized service technician.
12. Please do not pull on any cable. Always hold on to the plug when
disconnecting cables.
13. This equipment may be used for the international application related to
Tonometry according to this manual.
14. Before every operation, proceed with visual inspection on the equipment
exterior to seek any mechanical damage(s) to ensure the proper functioning.
15. Do not obstruct any ventilation outlet for proper heat dissipation.
16. In case of any presence of smoke, spark or abnormal noise/smell from the
machine, please power off immediately and pull out the plug.

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3. Charateristics
1. Distance between eye and device are established automatically to
measurement position. ( Working Distance : 11mm)
2. Patient`s intraocular pressure of left/right eye automatically if press button
once.
3. The peak of the air pressure is automatically controlled within the range of
0 to 60 mmHg.
4. Air pressure by pressure of patient`s eye in controlled suitable.
5. Confirm data amount and detection comparison between reference
pressure and data.
6. Reduce error compensating measurement according to patient`s cornea
thickness.

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4. Note for Use
1. Do not hit or drop the instrument. The instrument may be damaged by the
strong impact. The impact may damage the function of this instrument. Handle
it with care.
2. The precision of measurement can be affected when the machine is exposed to
the direct sunlight or too bright indoor illumination. It is recommended to
perform the measurement in the dark optometry room.
3. If you want to use it as connecting the device to other equipment, please follow
the guidance of our local representative.
4. Sudden heating of the room in cold areas will cause condensation of vapor on
the protective glass in the measurement window and on nozzle parts inside the
instrument. In this case, wait until condensation disappears before performing
measurements.
5. Make sure to keep the window in examinee side is clean at all times. In case
that it has become dirty by dusts or other substances, it can cause errors in the
machine or affect the precision of measurement.
6. In case of any presence of smoke, smell or noise during the use of machine,
please contact our local representative after plugging it off from the socket
(outlet).
7. If you clean the surface of the equipment with organic solvents such as alcohol,
thinner, benzene, etc, it can damage the machine. So, please do not use them.
8. In case of moving HNT-7000, carry it holding the lower part of machine body
with both hands as fixing the stage after switching the machine off all the time.
9. In case of no use of the machine for a long time, please put the dust cover on
the device after powering and plugging off.

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5. Names and functions of each part
5.1 Main parts
[ Figure 1. Front Section ]
1. LCD TOUCH SCREEN : Selectiong for measurement and function parts
2. Operatin Lamp : Indicates whether or not the electric power is on
3. Printer : Printing the measured results
4. SAFETY Button : Safety distance establishment between patient and device
5. Printer Button : A button for printing of measuring results.
6. START Button : Performing the measurement by AT/MT/FT pressing if after focusing.
7. Scroll Wheel : Adjusting the focus by moving the directions of forward/backward.
8. Ball Mouse : Adjusting the focus by moving the directions of left/right, up and down.
9. R/L Button: Adjusting the measured by patient`s eye of left/right
10. DEMO 버튼 : Button that discharge wind before measure. (Measurement explanation to patient)
11. Chin rest up/down(▲,▼)Button : Move up or down the chinrest

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[ Figure 2. Back Section ]
1. Forehead Rest : Preventing the vibration by fixing the forehead.
2. Air Nozzle : Measuring the intraocular pressure on eyes.
3. Chinrest : Preventing the vibration by fixing the chin.
4. Power Switch : Switch for power on/off
5. High Adjustment Mark : Adjusts the eyes` height of examinees.

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[ Figure 3. Bottom Section ]
1. Power Supply Socket : A socket connecting to exterior power plug
2. Serial Interface Connector : A terminal connecting to the exterior equipment.

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5.2 Explanation Switches in Front
[Figure 4. Front Section Switches]
Num 1 : A switch to change the mode for measurement (FT/AT/MT)
Num 2 : A switch to change the Shooting mode for measurement (A1/A3)
Num 3 : The selected measurement range is displayed (IOP30/IOP60/SPC30/SPC60)
Num 4 : Thickness compensation function of cornea On/Off
Num 5 : Right eye`s measurement DATA
Num 6 : Left eye`s measurement DATA
Num 7 : Used as a guide to position the patient`s eye in the center of screen.
Num 8 : Show the patient Measurement number (Counter)
Num 9 : A switch to change the mode for Environment mode

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6. Installation of Equipment & Preparation of Measurement
1. Connection of Pwer Cable
-Put HNT-7000 on the table.
-Insert the power cable into power connector.
at the bottom of the main body.
-After checking that the power of the machine
is off, insert the power plug into AC outlet
(socket)
2. Inserting Chin Restpaper
-Pull out the pushing pins at left/right sides.
-Insert the pushing pins into the holes at left/right
sides of the chin-rest paper.
-Stick the chin-rest paper inserted with the
Pushing pins onto the chin-rest.
3. Installation of Printing Paper
Please refer to section 8.5.1 regarding the sequence of installation of
Printing paper.
4. Input of Message
Input the contents desirable to be printed such as name or address of
hospital, etc. in the memory of message editing monitor in advance at all
times.
5. Check of Set up
As set up of patient counter, Auto Tracking, Auto Shooting , SPC mode,
pressure measurement unit, ACC mode, Cornea thickness input, print mode,
data, etc, please check them in SETUP mode. (refer to Section 8.2)
[ Figure 5. Connection of power cable ]
[ Figure 6. Inserting chin-rest paper ]

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6. Transmission to Other Machines.
In case of transmitting the measured results to other machines, prepare
other machines while connecting the cable into the interface connector of
this machine. You can select the transmitting speed in the user`s SETUP
mode. Please contact to the agent where you bought this machine for
details..