Yeasn YPB-2100 User manual

YPB-2100
LCD VISUAL CHART
User Manual
Version: 1.4
Revision date: 2022.12

Product Name: LCD VISUAL CHART
Nome do produto: TABELA VISUAL DE LCD
Nombre del producto: TABLA VISUAL LCD
Ürün Adı: LCD GÖRSEL ŞEMA
Nome prodotto: TABELLA VISIVA LCD
Produktname: LCD-VISUAL TABELLE
Nom du produit: TABLEAU VISUEL LCD
Име на продукта: LCD ВИЗУАЛНА КАРТА
Produkto pavadinimas: LCD ženklųekranas
Nazwa produktu: WYKRES WIZUALNY LCD
Název produktu: VIZUÁLNÍ TABULKA LCD
Toote nimi: LCD VISUAALNE KAART
Produkta nosaukums: LCD Vizuālākarte
Όνομα προϊόντος: ΟΡΑΤΙΚΟ ΔΙΑΓΡΑΜΜΑ LCD
Numele produsului: HABĂVISUALĂLCD
Productnaam: LCD VISUELE KAART
User Manual Download link: www.yeasn.com/en/
Link para download do manual do usuário: www.yeasn.com/en/
Manual de usuario Enlace de descarga: www.yeasn.com/en/
Kullanım Kılavuzu İndirme linki: www.yeasn.com/en/
Manuale d'uso Link per il download: www.yeasn.com/en/
Link zum Herunterladen des Benutzerhandbuchs: www.yeasn.com/en/
Lien de téléchargement du manuel d'utilisation: www.yeasn.com/en/
Линк за изтегляне на ръководството за потребителя: www.yeasn.com/en/
Naudotojo vadovo atsisiuntimo nuoroda: www.yeasn.com/en/
Link do pobrania instrukcji obsługi: www.yeasn.com/en/
Uživatelská příručka Odkaz ke stažení: www.yeasn.com/en/
Kasutusjuhendi allalaadimise link: www.yeasn.com/en/
Lietotāja rokasgrāmatas lejupielādes saite: www.yeasn.com/en/
Εγχειρίδιο χρήστη Σύνδεσμος λήψης: www.yeasn.com/en/
Link de descărcare manual de utilizare: www.yeasn.com/en/
Gebruikershandleiding Downloadlink: www.yeasn.com/en/

Preface
Thank you for purchasing and using our LCD visual chart.
Please read this User Manual carefully before using this device. We sincerely
hope that this User Manual will provide you with sufficient information to use the
device.
Our pursuit is to provide people with high-quality, complete-function and more
personalized devices. Information in promotional materials and packing boxes is subject
to changes due to performance improvement without additional notice. Chongqing
Yeasn Science - Technology Co., Ltd. reserves the rights to update the devices and
materials.
If you have any questions during using, please contact at our service hotline: (86-023)
62797666, we will be very happy to help you.
Your satisfaction, our impetus!
Information of manufacturer
Name: CHONGQING YEASN SCIENCE - TECHNOLOGY CO., LTD
Address: 5 DANLONG ROAD, NAN’AN DISTRICT, CHONGQING, CHINA.
Tel: [phone]

Content
1. Basic information .....................................................................................................- 1 -
1.1 Uses ................................................................................................................- 1 -
1.2 Performance Parameters.................................................................................- 1 -
1.3 Power Supply Parameters...............................................................................- 3 -
1.4 Weight and Size ..............................................................................................- 3 -
1.5 Name plate and indications ............................................................................- 3 -
2. Safety Precautions ....................................................................................................- 5 -
3. Main Structure..........................................................................................................- 8 -
3.1 Host.................................................................................................................- 8 -
3.2 Remote Controller ........................................................................................- 10 -
3.3 Power Adapter ..............................................................................................- 11 -
4 Installation ...............................................................................................................- 12 -
4.1 Part List ........................................................................................................- 12 -
4.2 Installation Instructions ................................................................................- 13 -
5. Preventive inspection..............................................................................................- 17 -
6. Directions for Use...................................................................................................- 17 -
6.1 Device Startup and Shutdown ......................................................................- 17 -
6.2 How to use the Remote Controller ...............................................................- 20 -
6.3 Other operating instructions .........................................................................- 28 -
7. Troubleshooting......................................................................................................- 29 -
8. Cleaning and Protection .........................................................................................- 30 -
8.1 Clean LCD displayer ....................................................................................- 30 -
8.2 Clean external parts ......................................................................................- 30 -
9. Maintenance ...........................................................................................................- 31 -
10. Environmental Conditions and Service Life ........................................................- 32 -
10.1 Environmental conditions for normal operation.........................................- 32 -
10.2 Environmental conditions for transportation and storage...........................- 32 -
10.3 Service life..................................................................................................- 32 -
11. Disposal and Environmental protection................................................................- 32 -
12. Manufacturer’s Responsibility .............................................................................- 33 -
13. Electrical Schematic Diagram ..............................................................................- 34 -
14. Guidance of EMC and other interference.............................................................- 35 -

- 1 -
1. Basic information
1.1 Uses
Used to detect visual sensitivity, refractive properties and binocular vision function of human eye.
Produce name: LCD visual chart.
Model: YPB-2100
Software version number: V3
Contraindications: none.
Target groups of patients: adults, children.
Intended users: optometrists in hospital ophthalmology and optical shops.
Specific qualifications of device users and/or other persons: have a qualification certificate for
optometry and glasses.
If cleaning and maintenance needed, please power off the product and unplug from the socket.
Detailed cleaning and maintenance method, please refer to 8 Cleaning and Protection 9
Maintenance.
1.2 Performance Parameters
1.2.1 LCD displayer: 23.8 inches (1920 ×1080 pixels)
1.2.2 Optometry distance: 1.5~7.3 m optional, step 0.1 m
5-24 ft optional, step 0.5 ft
1.2.3 Optotypes
Visual Chart: Used for vision test, including 6 types Charts such as “E”, “C”, Letter, Number, Kids
and ETDR.
1.2.4 Visual Charts display modes: all, single, row and column.
1.2.5 Automatic screensaver: 5 mins, 15 mins and 45 mins are optional.

- 2 -
E/C/Letter/Number/Kids
5-Grade LOG decimal1 decimal2 Imperial Metric decimal3 decimal4
3.6 1.4 0.04 0.05 20/500 20/500 0.04 0.04
3.7 1.3 0.05 0.06 20/400 20/400 0.05 0.05
3.8 1.2 0.06 0.07 20/300 20/300 0.06 0.066
3.9 1.1 0.08 0.08 20/250 20/250 0.08 0.08
4 1 0.1 0.09 20/200 20/200 0.1 0.1
4.1 0.9 0.12 0.1 20/150 20/150 0.125 0.133
4.2 0.8 0.15 0.2 20/100 20/100 0.16 0.2
4.3 0.7 0.2 0.3 20/90 20/90 0.2 0.222
4.4 0.6 0.25 0.4 20/80 20/80 0.25 0.25
4.5 0.5 0.3 0.5 20/70 20/70 0.32 0.285
4.6 0.4 0.4 0.6 20/60 20/60 0.4 0.33
4.7 0.3 0.5 0.7 20/50 20/50 0.5 0.4
4.8 0.2 0.6 0.8 20/40 20/40 0.63 0.5
4.9 0.1 0.8 0.9 20/30 20/30 0.8 0.66
5 0 1 1 20/25 20/25 1 0.8
5.1 -0.1 1.2 1.2 20/20 20/20 1.25 1
5.2 -0.2 1.5 1.5 20/15 20/15 1.6 1.33
5.3 -0.3 2 2 20/10 20/10 2 2
Remarks: When distance less than 2.5m, Chart “E”, “C”, Letter ，Number, Kids will be influenced
by pixel size, the last three lines optotypes of above chart will be shielded.
ETDRS
5-Grade LOG decimal1 decimal2 Imperial Metric decimal3 decimal4
4.5 0.5 0.3 0.3 20/63 6/20 0.32 0.32
4.6 0.4 0.4 0.4 20/50 6/15 0.4 0.4
4.7 0.3 0.5 0.5 20/40 6/12 0.5 0.5
4.8 0.2 0.6 0.6 20/32 6/9.5 0.63 0.63
4.9 0.1 0.8 0.8 20/25 6/7.5 0.8 0.8
5 0 1 1 20/20 6/6 1 1
5.1 -0.1 1.2 1.2 20/16 6/5 1.25 1.25
5.2 -0.2 1.5 1.5 20/13 6/4 1.6 1.6
5.3 -0.3 2 2 20/10 6/3 2 2

1.3 Pow
e
1) Input v
o
2) Input fr
e
3) Input p
o
1.4 Wei
g
1) Wall-m
o
Weight
Size
* The des
i
notice.
1.5 Nam
e
Name plat
e
In case the
authorized
M
D
S
C
C
e
r Suppl
y
o
ltage
e
quency
o
wer
g
ht and S
i
o
unte
d
Host: abo
Remote
c
Host: 595
Remote
c
i
gn and sp
e
e
plate a
n
e
and indic
a
name plate
distributor
s
M
anufactur
e
D
ate of ma
n
S
erial num
b
C
ountry of
m
C
E markin
g
Parame
t
AC10
0
50/60 H
z
1.0-0.5
A
i
ze
ut 4.65 kg
c
ontroller:
a
.6 mm (L)
×
c
ontroller: 1
e
cifications
n
d indica
t
a
tions are p
a
is not past
e
s
.
er
n
ufacture
b
e
r
m
anufactur
g
t
ers
0
V
~
240V(±
z
A
a
bout 80 g
×
388.7 mm
86 mm (L)
are subject
t
ions
a
sted on th
e
e
d well or t
h
e
- 3 -
10%)
(W) × 62
m
× 55 mm (
W
to change
s
e
instrume
n
h
e characte
r
m
m (H)
W
) × 17 m
m
s
due to tec
t to arise e
n
s become u
n
m
(H)
hnical upd
a
nd
-users' no
n
clear to re
c
a
tes withou
t
tice.
c
ognize, pl
e
t
additiona
l
e
ase contac
t
l
t

- 4 -
Correct Disposal of This Product (Waste Electrical & Electronic Equipment)
Medical device
Use-by date
Consult instructions for use
Refer to instruction manual / booklet
Authorized European representative
Catalogue number
Unique Device Identifier
Model number
G.W. Gross Weight
DIM. Dimension
Attention! Please refer to accompanying documents
Power switch identification
Audio interface
USB interface
Switch Mark
Nonionizing radiation
Fragile, handle with care
This way up
Keep dry
Do not roll
Stacking limit by 5

- 5 -
Temperature limit
Humidity limitation
Atmospheric pressure limitation
We will make available on request circuit diagrams, component part lists, descriptions, calibration
instructions, or other information that will assist service personnel to repair those parts of ME
equipment that are designated by the manufacturer as repairable by service personnel.
2. Safety Precautions
Please read the following precautions carefully to avoid personal injury, device damages or
other possible hazards:
●Use the device indoors and keep it clean and dry; do not use it under inflammable, explosive, high
temperature and dusty environment;
●Do not use the device near water; also be careful not to make any kinds of liquid drop onto the
device. Do not place the device in damp or dusty places, nor place it where humidity and temperature
change quickly;
●When mounting the device on the wall, make sure the wall is able to withstand the weight of 8 kg;
●When mounting the device on the wall, reserve a gap over 50mm all around the device;
●The device is hung on the rack. Be careful when touching the device on the wall: Upward
displacement may cause the device unhooked and fall, resulting in personal injury or device failure;
●Dedicated power adaptor configured for the device should be used:
Model: GSM40A15-P1J (Component of the device), Input 100- ～
240V 1.0-0.5A 50-60Hz,
Output15V 2.67A;
●Make sure the input voltage is consistent with rated input voltage and the electric wire is correctly
connected and well grounded;
●Do not use multiperture socket or extend the power cord to insert the plug of the device into power
socket;
●Unplug power cord and cut off power supply line especially under emergency circumstances; hold
the power plug to pull out it from the socket rather than pulling the power cord;
●Do not touch the power cord with wet hands. Check the power cord and do not allow the power

- 6 -
cord to be stamped, pressed by heavy objects or knotted;
●Power cord damage may cause fire or electric shock. Please check it regularly;
●Cut off power before cleaning or disinfecting the device;
●Do not dismantle or touch the interior parts of the device, otherwise it may cause electric shock or
device failure;
●The device has passed electromagnetic compatibility test. Follow below instructions related to
EMC (electromagnetic compatibility) when mounting and using the device:
- Do not use the device with other electric devices to avoid electromagnetic disturbance to the device;
- Do not use the device nearby other electric devices to avoid electromagnetic disturbance to the
device;
- Do not use a power adaptor that is not configured with the device, otherwise it may increase the
electromagnetic emission amount, which may reduce the capacity of resisting disturbance.
●This product contains a wireless module, and the wireless parameter specifications are as follows
(transmit and receive):
-Network conditions: CS structure, local area network mode.
-Modulation type: 802.11b CCK; 802.11g OFDM; 802.11n OFDM.
-Channel bandwidth: 20MHz.
-Recommended operating parameters: Operating frequency: 40MHz.
-Working mode: 802.11b/g/n mixed operation mode.
●Communication equipment requirements
-Network equipment requirements: automatic optometry head produced by Chongqing Yeasn
Science - Technology Co., Ltd.
-Storage media U disk configuration requirements: meet its own industry standards; support
USB2.0 interface; file storage space is not less than 16GB; file format: NTFS file format, FAT32
file format.
●User access control mechanism:
-User identification method: After selecting the user type, verify it by entering a password.
-User type and permissions:
Ordinary users: no USB port connection function and no WIFI connection function permission.
YPA users: have USB port connection function and have WIFI connection function authority.
Administrator user: Has YPA user rights and has software upgrade rights.