National Conventions ................................................................................................................................................ 1
Power ........................................................................................................................................................................ 2
Other ......................................................................................................................................................................... 5
Contents in Box ......................................................................................................................................................... 6
Setup Stand & Base .................................................................................................................................................. 7
Connecting the Monitor ............................................................................................................................................. 9
Adaptive-Sync function ............................................................................................................................................11
Color Setup .................................................................................................................................................. 16
Game Setting ............................................................................................................................................... 19
Extra ............................................................................................................................................................ 20
LED Indicator .......................................................................................................................................................... 21
General Specication .............................................................................................................................................. 23
Plug and Play .......................................................................................................................................................... 29
i
Safety
National Conventions
The following subsections describe notational conventions used in this document.
Notes, Cautions, and Warnings
Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type. These
blocks are notes, cautions, and warnings, and they are used as follows:
NOTE:
CAUTION:
problem.
WARNING:
may appear in alternate formats and may be unaccompanied by an icon. In such cases, the specic presentation of the
warning is mandated by regulatory authority.
A NOTE indicates important information that helps you make better use of your computer system.
A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
A WARNING indicates the potential for bodily harm and tells you how to avoid the problem. Some warnings
1
Power
The monitor should be operated only from the type of power source indicated on the label. If you are not sure of the
type of power supplied to your home, consult your dealer or local power company.
The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug will t
only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug, have an
electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the safety purpose of
the grounded plug.
Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect the
monitor from damage due to power surges.
Do not overload power strips and extension cords. Overloading can result in re or electric shock.
To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate congured
receptacles marked between 100-240V AC, Min. 5A.
The wall socket shall be installed near the equipment and shall be easily accessible.
2
Installation
Installed with stand
Do not place the monitor on an unstable cart, stand, tripod, bracket, or table. If the monitor falls, it can injure a
person and cause serious damage to this product. Use only a cart, stand, tripod, bracket, or table recommended by
the manufacturer or sold with this product. Follow the manufacturer’s instructions when installing the product and use
mounting accessories recommended by the manufacturer. A product and cart combination should be moved with care.
Never push any object into the slot on the monitor cabinet. It could damage circuit parts causing a re or electric
shock. Never spill liquids on the monitor.
Do not place the front of the product on the oor.
If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacturer and follow the kit
instructions.
Leave some space around the monitor as shown below. Otherwise, air-circulation may be inadequate hence
overheating may cause a re or damage to the monitor.
See below the recommended ventilation areas around the monitor when the monitor is installed on the wall or on the
stand:
Installed with stand
4 inches
10cm
12 inches
30cm
4 inches
10cm
Leave at lease this
space around the set
4 inches
10cm
3
Cleaning
Clean the cabinet regularly with cloth. You can use soft-detergent to wipe out the stain, instead of strong-detergent
which will cauterize the product cabinet.
When cleaning, make sure no detergent is leaked into the product. The cleaning cloth should not be too rough as it
will scratch the screen surface.
Please disconnect the power cord before cleaning the product.
4
Other
If the product is emitting a strange smell, sound or smoke, disconnect the power plug IMMEDIATELY and contact a
Service Center.
Make sure that the ventilating openings are not blocked by a table or curtain.
Do not engage the LCD monitor in severe vibration or high impact conditions during operation.
Do not knock or drop the monitor during operation or transportation.
5
Setup
*
*
*
*
*
CD Manual
Power CableDP CableHDMI CableVGA Cable
Warranty CardStandBase
Contents in Box
Not all signal cables (DP, HDMI, VGA cables) will be provided for all countries and regions. Please check with the local
dealer or AOC branch ofce for conrmation.
6
Setup Stand & Base
Please setup or remove the base following the steps as below.
Setup:
Remove:
7
Adjusting Viewing Angle
For optimal viewing it is recommended to look at the full face of the monitor, then adjust the monitor’s angle to your own
preference.
Hold the stand so you will not topple the monitor when you change the monitor’s angle.
You are able to adjust the monitor as below:
NOTE:
Do not touch the LCD screen when you change the angle. It may cause damage or break the LCD screen.
8
Connecting the Monitor
C27G2CQ27G2
6
1
2
35
6
1
2
345
Cable Connections In Back of Monitor and Computer:
1. HDMI-2
2. HDMI-1
3. DP
4. D-SUB
5. Earphone
6. Power
Connect to PC
1. Connect the power cord to the back of the display rmly.
2. Turn off your computer and unplug its power cable.
3. Connect the display signal cable to the video connector on the back of your computer.
4. Plug the power cord of your computer and your display into a nearby outlet.
5. Turn on your computer and display.
If your monitor displays an image, installation is complete. If it does not display an image, please refer Troubleshooting.
To protect equipment, always turn off the PC and LCD monitor before connecting.
9
Wall Mounting
Preparing to Install An Optional Wall Mounting Arm.
This monitor can be attached to a wall mounting arm you purchase separately. Disconnect power before this procedure.
Follow these steps:
1. Remove the base.
2. Follow the manufacturer’s instructions to assemble the wall mounting arm.
3. Place the wall mounting arm onto the back of the monitor. Line up the holes of the arm with the holes in the back of
the monitor.
4. Reconnect the cables. Refer to the user’s manual that came with the optional wall mounting arm for instructions on
attaching it to the wall.
Noted: VESA mounting screw holes are not available for all models, please check with the dealer or ofcial department of
AOC.
10
Adaptive-Sync function
1. Adaptive-Sync function is working with DP/HDMI
2. Compatible Graphics Card: Recommend list is as the below, also could be checked by visiting www.AMD.com
Clock 0-100 Adjust picture Clock to reduce Vertical-Line noise.
Phase0-100 Adjust Picture Phase to reduce Horizontal-Line noise
Sharpness0-100Adjust picture sharpness
H. Position 0-100 Adjust the horizontal position of the picture.
V. Position 0-100 Adjust the vertical position of the picture.
15
Color Setup
Picture BoostOSD SetupExitExtra
Luminance
Red50
Green50
Blue50DCB DemoOff
Color Temp.Warm
DCB ModeOff
Color Setup
Image Setup
Game Setting
Warm Recall Warm Color Temperature from EEPROM.
Normal Recall Normal Color Temperature from EEPROM.
Cool Recall Cool Color Temperature from EEPROM.
Color Temp.
sRGB Recall SRGB Color Temperature from EEPROM.
RedRed Gain from Digital-register
User
GreenGreen Gain Digital-register.
BlueBlue Gain from Digital-register
Full Enhance on or offDisable or Enable Full Enhance Mode
Nature Skin on or offDisable or Enable Nature Skin Mode
DCB Mode
Green Field on or offDisable or Enable Green Field Mode
Sky-blue on or offDisable or Enable Sky-blue Mode
Auto Detect on or offDisable or Enable AutoDetect Mode
DCB Demoon or offDisable or Enable Demo
16
Picture Boost
OSD SetupExitExtra
Luminance
Image Setup
Brightness50
Contrast50
H. Position0
V. Position0
Bright Frameoff
Frame Size14
Picture Boost
Color Setup
Game Setting
Bright Frame on or off Disable or Enable Bright Frame
Frame Size 14-100 Adjust Frame Size
Brightness 0-100 Adjust Frame Brightness
Contrast 0-100 Adjust Frame Contrast
H. position 0-100 Adjust Frame horizontal Position
V. position0-100 Adjust Frame vertical Position
Note:
Adjust the brightness, contrast, and position of the Bright Frame for better viewing experience.
17
OSD Setup
ExitExtra
Luminance
Image Setup
Color Setup
H. Position50
V. Position0
Transparence25
50
LanguageEnglish
Timeout10
DP Capability1.2Volume
Break ReminderOff
Frame CounterOff
OSD Setup
Picture Boost
Game Setting
Language Select the OSD language
Timeout 5-120Adjust the OSD Timeout
DP Capability1.1/1.2
Please be noted that only DP1.2 support Adaptive-Sync
function
H. Position 0-100 Adjust the horizontal position of OSD
V. Position 0-100 Adjust the vertical position of OSD
Volume0-100Volume Adjustment.
Transparence0-100Adjust the transparence of OSD
Break Reminder
Frame Counter
(C27G2)
on or off
Off / Right-Up /
Right-Down / LeftDown / Left-Up
Break reminder if the user continuously work for more
than 1hrs
Display V frequency on the corner selected
(Frame counter feature only works with AMD graphic
card.)
Note:
If the DP video content supports DP1.2, please select DP1.2 for DP Capability; otherwise, please select DP1.1
18
Game Setting
Picture BoostOSD SetupExitExtra
Luminance
Low Input Lag
LowBlue Mode
Overdrive
Shadow Control
Game ModeOff
Off
Off
Off
Image Setup
Color Setup
Game Setting
50
Game Color
10
Frame Counter
Off
Adaptive-Sync
Off
MBR
0
For playing FPS (rst Person Shooters) games.
Improves dark theme black level details.
For playing RTS (Real Time Strategy). Improves the
image quality.
For playing Racing games, Provides fastest response
time and high color saturation.
Game Mode
FPS
RTS
Racing
Gamer 1User’s preference settings saved as Gamer 1.
Gamer 2User’s preference settings saved as Gamer 2.
Gamer 3User’s preference settings saved as Gamer 3.
offNo optimization by Smart image game
Shadow Control Default is 50, then end-user can adjust
from 50 to 100 or 0 to increase contrast for clear picture.
Shadow Control0-100
1. If picture is too dark to be saw the detail clearly,
adjusting from 50 to100 for clear picture.
2. If picture is too white to be saw the detail clearly,
adjusting from 50 to0 for clear picture
Low Input LagOn/OffTurn off frame buffer to decrease input lag
Game Color0-20
Game Color will provide 0-20 level for adjusting
saturation to get better picture.
Reading / Ofce
Low Blue Mode
/ Internet /
Decrease blue light wave by controlling color
temperature.
Multimedia / Off
Weak
Medium
Overdrive
Strong
Adjust the response time.
Boost
Off
Off / Right-up /
Frame Counter
(CQ27G2)
Right-Down / Left-
Display V frequency on the corner selected
Down / Left-Up
MBR0 ~ 20Adjust the Motion Blur Reduction.
Adaptive-SyncOn/OffAdjust the Adaptive-Sync.
Note:
The function MBR and Overdrive Boost are available only when Adaptive-Sync is off and the vertical frequency is up to
75 Hz.
19
Extra
Picture BoostOSD SetupExit
Luminance
Image Setup
Color Setup
Off Timer00
Input SelectAuto
Auto Config.No
ResetNo
Image RatioWide
DDC/CIYes
Resolution : 1920(H)X1080(V)
H. Frequency : 67KHz
V. Frequency : 60Hz
Extra
Game Setting
Input SelectSelect Input Signal Source
Auto Cong.
(C27G2)
yes or no Auto adjust the picture to default
Off timer0-24hrsSelect DC off time
Wide
4:3
1:1
17” (4:3)
19” (4:3)
19” (5:4)
Image Ratio
Select image ratio for display.
19”W (16:10)
21.5”W (16:9)
22”W (16:10)
23”W (16:9)
23.6”W (16:9)
24”W (16:9)
DDC/CIyes or noTurn ON/OFF DDC/CI Support
ResetYes or noReset the menu to default
20
Exit
Picture BoostOSD Setup
Luminance
Image Setup
Color Setup
Exit
Extra
Game Setting
Exit Exit the main OSD
LED Indicator
StatusLED Color
Full Power ModeWhite
Active-off ModeOrange
21
Troubleshoot
Problem & Question
Power LED Is Not ON
No images on the screen
Picture Is Fuzzy & Has
Ghosting Shadowing Problem
Picture Bounces, Flickers Or
Wave Pattern Appears In The
Picture
Monitor Is Stuck In Active OffMode”
Missing one of the primary
colors (RED, GREEN, or
BLUE)
Screen image is not centered
or sized properly
Picture has color defects
(white does not look white)
Possible Solutions
Make sure the power button is ON and the Power Cord is properly
connected to a grounded power outlet and to the monitor.
Is the power cord connected properly?
Check the power cord connection and power supply.
Is the cable connected correctly?
(Connected using the VGA cable)
Check the VGA cable connection.
(Connected using the HDMI cable)
Check the HDMI cable connection.
(Connected using the DP cable)
Check the DP cable connection.
* VGA/HDMI/DP input is not available on every model.
If the power is on, reboot the computer to see the initial screen (the login
screen), which can be seen.
If the initial screen (the login screen) appears, boot the computer in the
applicable mode (the safe mode for Windows 7/8/10) and then change the
frequency of the video card.
(Refer to the Setting the Optimal Resolution)
If the initial screen (the login screen) does not appear, contact the Service
Center or your dealer.
Can you see “Input Not Supported” on the screen?
You can see this message when the signal from the video card exceeds
the maximum resolution and frequency that the monitor can handle
properly.
Adjust the maximum resolution and frequency that the monitor can handle
properly.
Make sure the AOC Monitor Drivers are installed.
Adjust the Contrast and Brightness Controls.
Press to auto adjust.
Make sure you are not using an extension cable or switch box. We
recommend plugging the monitor directly to the video card output connector
on the back.
Move electrical devices that may cause electrical interference as far away
from the monitor as possible.
Use the maximum refresh rate your monitor is capable of at the resolution
you are using.
The Computer Power Switch should be in the ON position.
The Computer Video Card should be snugly tted in its slot.
Make sure the monitor’s video cable is properly connected to the computer.
Inspect the monitor’s video cable and make sure no pin is bent.
Make sure your computer is operational by hitting the CAPS LOCK key on
the keyboard while observing the CAPS LOCK LED. The LED should either
turn ON or OFF after hitting the CAPS LOCK key.
Inspect the monitor’s video cable and make sure that no pin is damaged.
Make sure the monitor’s video cable is properly connected to the computer.
Adjust H-Position and V-Position or press hot-key (AUTO).
Adjust RGB color or select desired color temperature.
Horizontal or vertical
disturbances on the screen
Use Windows 7/8/10 shut-down mode to adjust CLOCK and FOCUS.
Press to auto-adjust.
22
Specification
General Specification
Model nameC27G2
Driving system TFT Color LCD
Viewable Image Size68.6 cm diagonal
Panel
Others
Physical
Characteristics
Environmental
Pixel pitch
VideoR, G, B Interface & HDMI lnterface & DP Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Horizontal scan range
Horizontal scan Size(Maximum)597.888mm
Vertical scan range
Vertical Scan Size(Maximum)336.312mm
Optimal preset resolution 1920x1080@60Hz
Max resolution
Plug & Play VESA DDC2B/CI
Input Connector HDMIx2/DP/VGA
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, TMDS
Output ConnectorEarphone out
Power Source 100-240V~, 50/60Hz,1.5A
Power Consumption
Connector TypeVGA/HDMI/DP/Earphone out
Signal Cable Type
Temperature
Humidity
Altitude
0.3114mm(H) x 0.3114mm(V)
30k-83kHz(D-SUB)
30k-200kHz(HDMI/DP)
50-76Hz(D-SUB)
48-165Hz(HDMI/DP)
1920x1080@60Hz(D-SUB)
1920x1080@165Hz(HDMI/ DP)
Typical(Brightness = 90,Contrast = 50) 31W
Max. (brightness = 100, contrast =100)≤41W
Power saving
Detachable
Operating 0°~ 40°
Non-Operating -25°~ 55°
Operating 10% ~ 85% (non-condensing)
Non-Operating 5% ~ 93% (non-condensing)
Operating 0~ 5000 m (0~ 16404ft )
Non-Operating 0~ 12192m (0~ 40000ft )
≤
0.3W
23
Panel
Others
Physical
Characteristics
Environmental
Model nameCQ27G2
Driving system TFT Color LCD
Viewable Image Size68.6 cm diagonal
Pixel pitch
VideoHDMI lnterface & DP Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Horizontal scan range 30k-200kHz
Horizontal scan Size(Maximum)
Vertical scan range 48-144Hz
Vertical Scan Size(Maximum)335.664mm
Optimal preset resolution 2560x1440@60Hz
Max resolution2560x1440@144Hz
Plug & Play
Input Connector HDMIx2/DP
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, TMDS
Output ConnectorEarphone out
Power Source 100-240V~, 50/60Hz,1.5A
Power Consumption
Connector TypeHDMI/DP/Earphone out
Signal Cable Type
Temperature
Humidity
Altitude
0.2331mm(H) x 0.2331mm(V)
596.736mm
VESA DDC2B/CI
Typical(Brightness = 90,Contrast = 50) 28W
Max. (brightness = 100, contrast =100)≤38W
Power saving
Detachable
Operating 0°~ 40°
Non-Operating -25°~ 55°
Operating 10% ~ 85% (non-condensing)
Non-Operating 5% ~ 93% (non-condensing)
Operating 0~ 5000 m (0~ 16404ft )
Non-Operating 0~ 12192m (0~ 40000ft )
≤
0.3W
24
Preset Display Modes
C27G2
STANDARDRESOLUTION
VGA640x480@60Hz31.46959.94
VGA640x480@67Hz3566.667
VGA640x480@72Hz37.86172.809
VGA640x480@75Hz37.575
VGA640x480@100Hz51.0899.769
VGA640x480@120Hz61.91119.518
DOS MODE720x400@70Hz31.46970.087
DOS MODE720x480@60Hz29.85559.710
SD720x576@50Hz31.2550
SVGA800x600@56Hz35.15656.25
SVGA800x600@60Hz37.87960.317
SVGA800x600@72Hz48.07772.188
SVGA800x600@75Hz46.87575
SVGA800x600@100Hz63.68499.662
HORIZONTAL
FREQUENCY(kHz)
VERTICAL
FREQUENCY(Hz)
SVGA800x600@120Hz76.302119.97
SVGA832x624@75Hz49.72574.551
XGA1024x768@60Hz48.36360.004
XGA1024x768@70Hz56.47670.069
XGA1024x768@75Hz60.02375.029
XGA1024x768@100Hz81.57799.972
XGA1024x768@120Hz97.551119.989
WXGA+1440x900@60Hz55.93559.887
SXGA1280x1024@60Hz63.98160.02
SXGA1280x1024@75Hz79.97575.025
HD1280x720@50HZ37.07149.827
HD1280x720@60HZ4560
HD1280x1080@60Hz67.17359.976
Full HD1920x1080@60Hz67.560
Full HD1920x1080@100Hz113.2199.93
Full HD1920x1080@120Hz137.26119.982
Full HD1920x1080@165Hz158.1165
25
CQ27G2
STANDARDRESOLUTION
VGA640x480@60Hz31.46959.940
VGA640x480@72Hz37.86172.809
VGA640x480@75Hz37.50075.00
SVGA800x600@56Hz35.15656.250
SVGA800x600@60Hz37.87960.317
SVGA800x600@72Hz48.07772.188
SVGA800x600@75Hz46.87575.000
XGA1024x768@60Hz48.36360.004
XGA1024x768@70Hz56.47670.069
XGA1024x768@75Hz60.02375.029
SXGA1280x1024@60Hz63.98160.020
SXGA1280x1024@75Hz79.97675.025
WXGA+1440x900@60Hz55.93559.887
WXGA+1440x900@60Hz55.46959.901
WSXGA1680x1050@60Hz65.29059.954
HORIZONTAL
FREQUENCY(kHz)
VERTICAL
FREQUENCY(Hz)
WSXGA1680x1050@60Hz64.67459.883
FHD1920x1080@60Hz67.50060.000
QHD for HDMI,DP2560x1440@60Hz88.78759.951
QHD for HDMI,DP2560x1440@75Hz111.02874.968
QHD for HDMI,DP2560x1440@144Hz222.056143.952
IBM MODES
DOS640x350@70Hz31.46970.087
DOS720x400@70Hz31.46970.087
MAC MODES
VGA640x480@67Hz35.00066.667
SVGA832x624@75Hz49.72574.551
XGA1024x768@75Hz60.24174.927
26
Pin Assignments
19-Pin Color Display Signal Cable
Pin No. Signal NamePin No. Signal NamePin No. Signal Name
1.TMDS Data 2+9.TMDS Data 0-17.DDC/CEC Ground
2.TMDS Data 2 Shield10.TMDS Clock +18.+5V Power
3.TMDS Data 2-11.TMDS Clock Shield19.Hot Plug Detect
4.TMDS Data 1+12.TMDS Clock-
5.TMDS Data 1Shield13.CEC
6.TMDS Data 1-14.Reserved (N.C. on device)
7.TMDS Data 0+15.SCL
8.TMDS Data 0 Shield16.SDA
20-Pin Color Display Signal Cable
Pin No.Signal NamePin No.Signal Name
1ML_Lane 3 (n)11GND
2GND12ML_Lane 0 (p)
3ML_Lane 3 (p)13CONFIG1
4ML_Lane 2 (n)14CONFIG2
5GND15AUX_CH(p)
6ML_Lane 2 (p)16GND
7ML_Lane 1 (n)17AUX_CH(n)
8GND18Hot Plug Detect
9ML_Lane 1 (p)19Return DP_PWR
10ML_Lane 0 (n)20DP_PWR
27
15-Pin Color Display Signal Cable
Pin No.Signal NamePin No.Signal Name
1Video-Red9+5V
2Video-Green10Ground
3Video-Blue11N.C.
4N.C.12DDC-Serial data
5Detect Cable13H-sync
6GND-R14V-sync
7GND-G15DDC-Serial clock
8GND-B
28
Plug and Play
Plug & Play DDC2B Feature
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor
to inform the host system of its identity and, depending on the level of DDC used, communicate additional information
about its display capabilities.
The DDC2B is a bi-directional data channel based on the I2C protocol. The host can request EDID information over the
DDC2B channel.
29
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