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HDC-9100 SERVICE MANUAL
1.
Introduction
1.1.
Outline of product
The Huvitz Digital Chart (HDC-9100) is a computerized chart presenting device that provides charts for refractive correction
test and various functional tests such as cross cylinder, red/green, binocular balance, fusion and suppression, heterophoria,
associated phoria, aniseikonia, stereopsis, and dominant eye test for heterophoria. Since the Digital Chart implements
charts on the LCD panel by exploiting the cutting edge digital technology, it’s not only faster and quieter but also equipped
with multifarious convenience functions. The contrast sensitivity and the background luminance of the chart are adjustable
for environmental needs. The chart can be installed in a wide range from 1.5 to 6 meter. The distance between optotypes
can be set to variable distance and even the selection of optotype can be randomized. Also the image gallery contains a
dozen of image clips that the examiner could utilize during the examination. Various masking and random functions would
be helpful for a punctual vision test.
The examiner may execute all the charts and functions by using the remote and the buttons on the main body of the digital
chart. If the chart is connected to the Huvitz Digital Refractor, the examiner would just use the Operation Panel of the Digital
Refractor for chart operation as it allows to control the lens unit and the chart device at the same time by a touch of buttons
on it.
1.2.
Classification
Product Name
Digital Eye Chart (Huvitz Digital Chart HDC-9100PF, HDC-9100N)
Weight , Packing Unit
Weight: 6.1 kg, Packing: EA
Objective: Device for optometry, which can display letters or symbols, and can save and load videos for medical
purpose.
Manufacturer and dealer
Huvitz Co., Ltd.
38, Burim-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14055 Republic of Korea
Classification
Classification of Equipment
Parameter Value
According to protection against electric shock.
Class I [Grounded]. This includes the AC/DC
adapter(XP power, AHM85PS12)
According to the degree of safety in the
presence of Flammable Anesthetics mixture
with air, with oxygen, or with nitrous oxide.
Equipment is NOT suitable for use in the presence
of flammable anesthetics mixture with oxygen or
with nitrous oxide
According to the mode of operation.
Continuous Operation.
