DELL ULTRASHARP U2518DX User Manual

Dell UltraSharp  
U2518D/U2518DX/U2518DR  
User’s Guide  
Model: U2518D/U2518DX/U2518DR  
Regulatory model: U2518Dt  
Contents  
About Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Package Contents                                                     5          
Product Features                                                      6          
Identifying Parts and Controls                                          7          
Monitor Specifications                                                              
Plug-and-Play                                                                        
LCD Monitor Quality and Pixel Policy                                            
10  
22  
22  
Setting Up the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23  
Attaching the Stand                                                  23            
Using the Tilt, Swivel, and Vertical Extension                           2  6      
Adjusting the Rotation Display Settings of Your System                 2 7  
Connecting Your Monitor                                                          
Organizing Your Cables                                                             
Removing the Monitor Stand                                                      
Wall Mounting (Optional)                                                             
27  
30  
30  
31  
Operating the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32  
Turning on the Monitor                                               3 2          
Using the Front Panel Controls                                        32          
Using the On-Screen Display (OSD) Menu                                       
35  
Contents  
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3
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48  
Self-Test                                                             4 8           
Built-in Diagnostics                                                  50            
Common Problems                                                                    
51  
Product Specific Problems                                            52            
Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54  
Safety Instructions                                                    54          
FCC Notices (U S  only) and Other Regulatory Information              54  
Contacting Dell                                                                       54  
Setting Up Your Monitor                                              55          
Maintenance Guidelines                                                            
57  
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Contents  
About Your Monitor  
Package Contents  
Your monitor ships with the components shown below. Make sure that you have received all  
the components and contact Dell if something is missing.  
NOTE: Some items may be optional and may not ship with your monitor.  
Some features or media may not be available in certain countries.  
Monitor  
Stand riser  
Stand base  
Power cable (varies by country)  
About Your Monitor  
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5
USB 3.0 upstream cable (enables the  
USB ports on the monitor)  
DP cable (DP to mDP, only for  
U2518D)  
HDMI cable (U2518DX & U2518DR)  
Drivers and documentation media  
Quick Setup Guide  
Safety,Environmental,and  
Regulatory Information  
Factory Calibration Report  
Product Features  
The Dell UltraSharp U2518D/U2518DX/U2518DR monitor has an active matrix, thinfilm  
transistor (TFT), liquid crystal display (LCD), and LED backlight. The monitor features  
include:  
63.44 cm (25-inch) active area display (Measured diagonally) 2560 x 1440 resolution,  
plus full-screen support for lower resolutions.  
Wide viewing angles with 99% sRGB color.  
Tilt, swivel, pivot and vertical extension adjustment capabilities.  
Removable pedestal and Video Electronics Standards Association (VESA™) 100 mm  
mounting holes for flexible mounting solutions.  
Ultra-thin bezel minimizes the bezel gap in multi-monitor usage, enabling easier set up  
with an elegant viewing experience.  
Extensive digital connectivity with DP, mDP, HDMI, and USB 3.0 helps future-proof  
your monitor.  
Plug and play capability if supported by your system.  
On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.  
Software and documentation media includes an information file (INF), Image  
color Matching File (ICM), Dell Display Manager software application and product  
documentation. Dell Display Manager included (comes in the CD attached with the  
monitor).  
Security lock slot.  
Asset Management Capability.  
Arsenic-Free glass and Mercury Free for Panel only.  
Energy Gauge shows the energy level being consumed by the monitor in real time.  
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About Your Monitor  
0.5 W standby power when in the sleep mode.  
Optimize eye comfort with a flicker-free screen.  
The possible long-term effects of blue light emission from the monitor may cause  
damage to the eyes, including eye fatigue or digital eye strain. ComfortView feature is  
designed to reduce the amount of blue light emitted from the monitor to optimize eye  
comfort.  
Identifying Parts and Controls  
Front view  
Label  
Description  
1
Function buttons (For more information, see Operating the Monitor)  
Power on/off button (with LED indicator)  
2
About Your Monitor  
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7
Back View  
Label Description  
Use  
1
VESA mountiong holes (100 mm  
x 100 mm-behind attached VESA  
cover)  
Wall mount monitor using VESA-  
compatible wall mount kit (100 mm x 100  
mm).  
2
3
4
Regulatory label  
Lists the regulatory approvals.  
Release stand from monitor.  
Stand release button  
Security lock slot  
Secures monitor with security cable lock  
(sold separately).  
5
6
Barcode, serial number, and Service Refer to this label if you need to contact Dell  
Tag label  
for technical support.  
Cable management slot  
Use to organize cables by placing them  
through the slot.  
Side View  
USB downstream port  
Port with battery icon supports BC 1.2.  
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About Your Monitor  
Bottom View  
Label Description  
Use  
1
AC power connector  
To connect the monitor power cable.  
Connect your computer with HDMI cable(optional).  
Connect your computer with DP cable.  
Connect your computer with mDP to DP cable.  
2
3
4
5
HDMI connector  
DP connector (in)  
mDP connector (in)  
DP connector (out)  
DP output for MST (multi-stream transport) capable  
monitor. DP 1.1 monitor can only be connected as the  
last monitor in the MST chain. To enable MST, refer  
to instruction on section “Connecting the Monitor for  
NOTE: Remove the rubber plug when use DP out  
connector.  
6
Audio line-out port  
Connect speakers to playback audio coming through  
HDMI or DP audio channels.  
Only supports 2-channel audio.  
NOTE: The audio line-out port does not support  
headphones.  
WARNING: Excessive sound pressure from  
earphones or headphones can cause hearing  
damage or loss.  
7
8
USB upstream port  
Connect the USB cable that comes with your monitor  
to the computer. Once this cable is connected, you  
can use the USB downstream connectors on the  
monitor.  
USB downstream ports (2) Connect your USB device. You can only use this  
connector after you have connected the USB cable  
to the computer and USB upstream connector on the  
monitor.Port with  
1.2.  
battery icon supports BC  
9
Stand lock  
Lock the stand to the monitor using a M3 x 6 mm  
screw (screw not included).  
About Your Monitor  
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9
Monitor Specifications  
Screen type  
Panel Type  
Active matrix - TFT LCD  
In-plane switching Technology  
16:9  
Aspect ratio  
Viewable image dimensions  
Diagonal  
63.44 cm (25 inches)  
Active Area  
Horizontal  
552.96 mm (21.77 inches)  
311.04 mm (12.25 inches)  
171992.7 mm2 (266.59 inches2)  
0.216 mm x 0.216 mm  
117.5  
Vertical  
Area  
Pixel pitch  
Pixel per inch (PPI)  
Viewing angle  
Horizontal  
Vertical  
178° (typical)  
178° (typical)  
Brightness  
350 cd/m² (typical)  
Contrast ratio  
1000 to 1 (typical)  
Display screen coating  
Anti-glare treatment of the front polarizer (3H) hard  
coating  
Backlight  
LED  
Response Time (Gray to Gray)  
5 ms (FAST mode)  
8 ms (NORMAL mode)  
Color depth  
Color gamut  
16.78 million colors  
99% sRGB  
99% REC709  
79% DCI-P3  
Calibration accuracy  
Connectivity  
Delta E < 2 (average)  
1 x DP 1.2 (HDCP 1.4)  
1 x mDP 1.2 (HDCP 1.4)  
1 x DP 1.2 (out) with MST (HDCP 1.4)  
1 x HDMI2.0 (HDCP 2.2)  
2 x USB 3.0 downstream port  
2 x USB 3.0 with BC1.2 charging capability at 2A  
(max)  
1 x USB 3.0 upstream port  
1 x Analog 2.0 audio line out (3.5mm jack)  
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About Your Monitor  
 
Border width (edge of monitor to  
active area)  
7.30 mm (Top)  
7.30 mm (Left/Right)  
8.80 mm (Bottom)  
Adjustability  
Height adjustable stand  
Tilt  
130 mm  
-5° to 21°  
-45° to 45°  
Yes  
Swivel  
Cable management  
Dell Display Manager (DDM)  
Compatibility  
Easy Arrange  
and other key features  
Security  
Security lock slot (cable lock sold separately) Anti-  
theft stand lock slot (to panel)  
Resolution Specifications  
Horizontal scan range  
30 kHz to 140 kHz (HDMI2.0)  
30 kHz to 88 kHz (Other)  
Vertical scan range  
56 Hz to 76 Hz  
Maximum preset resolution  
2560 x 1440 at 60 Hz  
Video display capabilities  
(DP & HDMI playback)  
480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 1440p  
About Your Monitor  
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11  
Preset Display Modes  
Display Mode  
Horizontal  
Frequency  
(kHz)  
Vertical  
Frequency  
(Hz)  
Pixel Clock  
(MHz)  
Sync Polarity  
(Horizontal/  
Vertical)  
720 x 400  
31.5  
31.5  
37.5  
37.9  
46.9  
48.4  
60.0  
67.5  
64.0  
80.0  
75.0  
67.5  
66.58  
88.8  
70.0  
60.0  
75.0  
60.3  
75.0  
60.0  
75.0  
75.0  
60.0  
75.0  
60.0  
60.0  
60.0  
60.0  
28.3  
-/+  
VESA, 640 x 480  
VESA, 640 x 480  
VESA, 800 x 600  
VESA, 800 x 600  
VESA, 1024 x 768  
VESA, 1024 x 768  
VESA, 1152 x 864  
VESA, 1280 x 1024  
VESA, 1280 x 1024  
VESA, 1600 x 1200  
VESA, 1920 x 1080  
VESA, 2048 x 1080  
CVR, 2560 x 1440  
25.2  
31.5  
-/-  
-/-  
40.0  
+/+  
+/+  
-/-  
49.5  
65.0  
78.8  
+/+  
+/+  
+/+  
+/+  
+/+  
+/+  
+/-  
+/-  
108.0  
108.0  
135.0  
162.0  
148.5  
147.16  
241.5  
12  
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About Your Monitor  
MST Multi-Stream Transport (MST) Modes  
MST Source Monitor  
Maximum number of external monitor that can be  
supported  
2560 x 1440/60 Hz  
2560 x 1440/60 Hz  
2
NOTE: Maximum external monitor resolution supported is 2560x1440 60Hz only.  
Electrical Specifications  
Video input signals  
Digital video signal for each differential line  
Per differential line at 100 ohm impedance  
DP/HDMI signal input support  
Input voltage/ frequency/current 100-240 VAC / 50 or 60 Hz 3 Hz / 1.6 A (maximum)  
Inrush current  
120 V: 40 A (Max.)  
240 V: 80 A (Max.)  
Physical Characteristics  
Connector type  
DP connector (include DP in and DP out)  
mDP connector  
HDMI connector  
Audio line-out  
USB 3.0 upstream port connector  
USB 3.0 downstream port connector x 4  
(Port with  
battery icon supports BC 1.2.)  
Signal cable type  
DP to mDP 1.8 M cable(only for U2518D)  
HDMI 1.8 M cable(U2518DX & U2518DR)  
USB 3.0 1.8 M cable  
Dimensions (with stand)  
Height (extended)  
Height (compressed)  
Width  
527.2 mm (20.76 inches)  
397.2 mm (15.64 inches)  
567.6 mm (22.35 inches)  
200.1 mm (7.88 inches)  
Depth  
Dimensions (without stand)  
Height  
331.5 mm (13.05 inches)  
567.6 mm (22.35 inches)  
Width  
About Your Monitor  
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13  
Depth  
49.2 mm (1.94 inches)  
Stand dimensions  
Height (extended)  
Height (compressed)  
Width  
432.7 mm (17.04 inches)  
386.5 mm (15.21 inches)  
292.4 mm (11.50 inches)  
200.1 mm (7.88 inches)  
Depth  
Weight  
Weight with packaging  
8.33 kg (18.36 lb)  
Weight with stand assembly and 6.24 kg (13.76 lb)  
cables  
Weight without stand assembly 3.42 kg (7.54 lb)  
(For wall mount or VESA mount  
considerations - no cables)  
Weight of stand assembly  
2.47 kg (5.45 lb)  
Environmental Characteristics  
Compliant Standards  
ENERGY STAR certified Monitor yes  
EPEAT  
EPEAT Gold registered in the U.S. EPEAT registration  
varies by country. See www.epeat.net for registration  
status by country.  
TCO Certified Display  
RoHS Compliant  
BFR/PVC Free monitor  
(excluding external cables)  
Temperature  
yes  
yes  
yes  
Operating  
0°C to 40°C (32°F to 104°F)  
–20°C to 60°C (–4°F to 140°F)  
Non-operating  
Humidity  
Operating  
10% to 80% (non-condensing)  
5% to 90% (non-condensing)  
Non-operating  
Altitude  
Operating  
5,000 m (16,404 ft) (maximum)  
12,192 m (40,000 ft) (maximum)  
375.32 BTU/hour (maximum)  
102.36 BTU/hour (typical)  
Non-operating  
Thermal dissipation  
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About Your Monitor  
Power Management Modes  
If you have VESA’s DPM-compliant video card or software installed in your PC, the monitor  
can automatically reduce its power consumption when not in use. This is referred to as  
power save mode*. If the computer detects input from the keyboard, mouse, or other input  
devices, the monitor automatically resumes functioning. The following table shows the  
power consumption and signaling of this automatic power saving feature.  
VESA  
Modes  
Horizontal Vertical Video Power Indicator  
Power Consumption  
Sync  
Sync  
Normal  
operation  
Active  
Active  
Active White  
110 W (maximum)**  
30 W (typical)  
Active-off  
mode  
Inactive  
-
Inactive Off  
White  
(Glowing)  
Off  
Less than 0.5 W  
Switch off  
-
-
Less than 0.3 W  
Energy Star  
Power Consumption  
PON  
23.2 W***  
ETEC  
72.4 kWh****  
The OSD operates only in the normal operation mode. If you press any button in the active-  
off mode, one of the following message is displayed:  
*Zero power consumption in OFF mode can only be achieved by disconnecting  
the AC mains cable from the monitor.  
**Maximum power consumption with maximum luminance.  
***Power consumption of on mode as defined in Energy Star 7.0 version.  
****Total energy consumption in kWh as defined in Energy Star 7.0 version.  
This document is informational only and reflects laboratory performance. Your product may  
perform differently, depending on the software, components and peripherals you ordered  
and shall have no obligation to update such information. Accordingly, the customer should  
About Your Monitor  
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15  
 
not rely upon this information in making decisions about electrical tolerances or otherwise.  
No warranty as to accuracy or completeness is expressed or implied.  
Activate the computer and the monitor to gain access to the OSD.  
NOTE: This monitor is ENERGY STAR -compliant.  
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About Your Monitor  
Pin Assignments  
DP connector (in)  
Pin number 20-pin side of the connected signal cable  
1
ML3(n)  
GND  
2
3
ML3(p)  
ML2(n)  
GND  
4
5
6
ML2(p)  
ML1(n)  
7
8
GND  
9
ML1(p)  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
ML0(n)  
GND  
ML0(p)  
CONFIG1  
CONFIG2  
AUX CH (p)  
GND  
AUX CH (n)  
Hot Plug Detect  
Return  
DP_PWR  
About Your Monitor  
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17  
DP connector (out)  
Pin number 20-pin side of the connected signal cable  
1
ML0(p)  
GND  
2
3
ML0(n)  
ML1(p)  
4
5
GND  
6
ML1(n)  
7
ML2(p)  
GND  
8
9
ML2(n)  
ML3(p)  
GND  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
ML3(n)  
CONFIG1  
CONFIG2  
AUX CH(p)  
GND  
AUX CH(n)  
Hot Plug Detect  
Return  
DP_PWR  
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About Your Monitor  
mDP connector  
Pin number 20-pin side of the connected signal cable  
1
GND  
2
Hot Plug Detect  
ML3 (n)  
CONFIG1  
ML3 (p)  
CONFIG2  
GND  
3
4
5
6
7
8
GND  
9
ML2 (n)  
ML0 (p)  
ML2 (p)  
ML0 (p)  
GND  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
GND  
ML1 (n)  
AUX (p)  
ML1 (p)  
AUX (n)  
GND  
DP_PWR  
About Your Monitor  
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19  
HDMI connector  
Pin number 19-pin side of the connected signal cable  
1
TMDS DATA 2+  
2
TMDS DATA 2 SHIELD  
TMDS DATA 2-  
3
4
TMDS DATA 1+  
5
TMDS DATA 1 SHIELD  
TMDS DATA 1-  
6
7
TMDS DATA 0+  
8
TMDS DATA 0 SHIELD  
TMDS DATA 0-  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
TMDS CLOCK+  
TMDS CLOCK SHIELD  
TMDS CLOCK-  
CEC  
Reserved (N.C. on device)  
DDC CLOCK (SCL)  
DDC DATA (SDA)  
DDC/CEC Ground  
+5 V POWER  
HOT PLUG DETECT  
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About Your Monitor  
Universal Serial Bus (USB)  
This section gives you information about the USB ports available on your monitor.  
NOTE: Up to 2 A on USB downstream port (port with  
battery icon) with BC 1.2  
compliance devices; up to 0.9 A on the other 3 USB downstream ports.  
Your computer has the following USB ports:  
1 upstream - bottom  
4 downstream - 2 at left side, 2 at bottom  
Power Charging Port - the ports with  
battery icon supports fast current  
charging capability if the device is BC 1.2 compatible.  
NOTE: The monitor’s USB ports work only when the monitor is on or in the power save  
mode. If you turn off the monitor and then turn it on, the attached peripherals may take  
a few seconds to resume normal functionality.  
Transfer speed  
SuperSpeed  
Hi-Speed  
Data rate  
5 Gbps  
Power consumption  
4.5 W (Max., each port)  
2.5 W (Max., each port)  
2.5 W (Max., each port)  
480 Mbps  
12 Mbps  
Full speed  
USB upstream port  
USB downstream port  
Pin number  
Signal name  
VBUS  
Pin number  
Signal name  
VBUS  
1
1
2
D-  
2
D-  
3
D+  
3
D+  
4
GND  
4
GND  
5
StdB_SSTX-  
StdB_SSTX+  
GND_DRAIN  
StdB_SSRX-  
StdB_SSRX+  
Shield  
5
StdA_SSRX-  
StdA_SSRX+  
GND_DRAIN  
StdA_SSTX-  
StdA_SSTX+  
Shield  
6
6
7
7
8
8
9
9
Shell  
Shell  
About Your Monitor  
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21  
Plug-and-Play  
You can install the monitor in any Plug-and-Play-compatible system. The monitor  
automatically provides the computer system with its extended display identification data  
(EDID) using display data channel (DDC) protocols so the computer can configure itself  
and optimize the monitor settings. Most monitor installations are automatic; you can select  
different settings if desired. For more information about changing the monitor settings, see  
LCD Monitor Quality and Pixel Policy  
During the LCD monitor manufacturing process, it is not uncommon for one or more pixels  
to become fixed in an unchanging state which are hard to see and do not affect the display  
quality or usability. For more information on LCD Monitor Pixel Policy, see Dell support site  
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About Your Monitor  
Setting Up the Monitor  
Attaching the Stand  
NOTE: The stand riser and stand base are detached when the monitor is shipped  
from the factory.  
NOTE: The procedure below is applicable for the default stand. If you purchased  
any other stand, see the documentation shipped with the stand to set it up.  
CAUTION: Place monitor of a flat, clean, and soft surface to avoid scratching the  
display panel.  
To attach the monitor stand:  
1 Remove the monitor protective cover and place the monitor with its front facing  
downward on it.  
2 Insert the two tabs on the upper part of the stand to the groove on the back of  
the monitor.  
3 Press the stand down till it snaps into its place.  
Setting Up the Monitor  
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23  
Hold the stand base with the triangle  
mark facing upward.  
Align the stand base protruded blocks to the matching slot on the stand.  
Insert the stand base blocks fully into the stand slot.  
24  
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Setting Up the Monitor  
Lift the screw handle and turn the  
screw clockwise.  
After fully tighten the screw, fold the  
screw handle flat within the recess.  
Setting Up the Monitor  
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25  
Using the Tilt, Swivel, and Vertical Extension  
NOTE: This is applicable for a monitor with a stand. If you purchased any other  
stand, refer to the respective stand setup guide for set up instructions.  
Tilt, Swivel and Vertical Extension  
With the stand attached to the monitor, you can tilt the monitor for the most comfortable  
viewing angle.  
NOTE: The stand is detached when the monitor is shipped from the factory.  
Rotating the Monitor  
Before you rotate the monitor, your monitor should be fully vertically extended and fully  
tilted up to avoid hitting the bottom edge of the monitor.  
NOTE: To use the Display Rotation function (Landscape versus Portrait view) with  
your Dell computer, you require an updated graphics driver that is not included with  
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Setting Up the Monitor  
 
this monitor. To download the graphics driver, go to www.dell.com/support and see the  
Download section for Video Drivers for latest driver updates.  
NOTE: When in the Portrait View Mode, you may experience performance degradation  
in graphic-intensive applications (3D Gaming and etc.).  
Adjusting the Rotation Display Settings of Your System  
After you have rotated your monitor, you need to complete the procedure below to adjust  
the Rotation Display Settings of your System.  
NOTE: If you are using the monitor with a non-Dell computer, you need to go the  
graphics driver website or your computer manufacturer website for information on  
rotating the ’contents’ on your display.  
To adjust the Rotation Display Settings:  
1
Right-click on the desktop and click Properties.  
Select the Settings tab and click Advanced.  
2
3
4
5
If you have an AMD graphics card, select the Rotation tab and set the preferred  
rotation.  
If you have an nVidia graphics card, click the nVidia tab, in the left-hand column  
select NVRotate, and then select the preferred rotation.  
If you have an Intel® graphics card, select the Intel graphics tab, click Graphic  
Properties, select the Rotation tab, and then set the preferred rotation.  
NOTE: If you do not see the rotation option or it is not working correctly, go to  
www.dell.com/support and download the latest driver for your graphics card.  
Connecting Your Monitor  
WARNING: Before you begin any of the procedures in this section, follow the  
To connect your monitor to the computer:  
1
Turn off your computer.  
2
Connect the HDMI/DP-mDP/USB cable from your monitor to  
the computer. (Vertically extend and tilt the monitor completely to rotate it for  
cable connection. See Rotating the Monitor.)  
3
Switch on your monitor.  
4 Select the correct input source at Monitor OSD Menu and turn on your  
computer.  
NOTE: U2518D/U2518DX/U2518DR default setting is DP 1.2. DP 1.1 Graphic card  
may not display normally. Please refer to “product specific problems – No image when  
using DP connection to the PC” to change default setting.  
Setting Up the Monitor  
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27  
 
Connecting the HDMI cable(Optional)  
Connecting the DP (or mDP) cable  
NOTE: Default is DP port. Select input source on monitor to switch to mDP.  
28  
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Setting Up the Monitor  
Connecting the monitor for DP Multi-Stream Transport (MST)  
function  
NOTE: Supports the DP MST feature. To make use of this feature, your PC  
Graphics Card must be certified to DP1.2 with MST option.  
NOTE: Remove the rubber plug when use DP out connector.  
Connecting the USB cable  
Setting Up the Monitor  
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29  
 
Organizing Your Cables  
After attaching all necessary cables to your monitor and computer, (see Connecting Your  
Monitor for cable attachment) organize all cables as shown above.  
Removing the Monitor Stand  
CAUTION: To prevent scratches on the LCD screen while removing the  
stand, make sure that the monitor is placed on a soft, clean surface.  
NOTE: The procedure below is applicable for the default stand. If you purchased  
any other stand, see the documentation shipped with the stand to set it up.  
To remove the stand:  
1
Place the monitor on a soft cloth or cushion.  
Press and hold the stand-release button.  
Lift the stand up and away from the monitor.  
2
3
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Setting Up the Monitor  
Wall Mounting (Optional)  
NOTE: Use M4 x 10 mm screws to connect the monitor to the wall-mounting kit.  
Refer to the instructions that come with the VESA-compatible wall mounting kit.  
1
Place the monitor on a soft cloth or cushion on a stable, flat table.  
Remove the stand.  
2
3
Use a Phillips crosshead screwdriver to remove the four screws securing the  
plastic cover.  
4
5
Attach the mounting bracket from the wall mounting kit to the monitor.  
Mount the monitor on the wall by following the instructions that comes with the  
wall mounting kit.  
NOTE: For use only with UL or CSA or GS-listed wall mount bracket with minimum  
weight/load bearing capacity of 3.42 kg (7.54 lb).  
Setting Up the Monitor  
|
31  
Operating the Monitor  
Turning on the Monitor  
Press the  
button to turn on the monitor.  
Using the Front Panel Controls  
Use the control buttons on the front of the monitor to adjust the characteristics of the  
image being displayed. As you use these buttons to adjust the controls, an OSD shows the  
numeric values of the characteristics as they change.  
32  
|
Operating the Monitor  
 
The following table describes the front panel buttons:  
Front-Panel Button  
1
Description  
Use this button to choose from a list of preset  
color modes.  
Shortcut key:  
Preset Modes  
2
3
Use this button to choose from a list of Input Source.  
Shortcut key:  
Input Source  
Use this menu button to launch the on-screen display  
(OSD) and select the OSD menu.  
Menu  
Exit  
4
5
Use this button to go back to the main menu or exit the  
OSD main menu.  
Use the Power button to turn the monitor On and Off.  
The white LED indicates the monitor is On and fully  
functional.  
Power (with power light  
indicator)  
A glowing white LED indicates DPMS Power Save  
Mode.  
Operating the Monitor  
|
33  
Front-Panel Button  
Use the buttons on the front of the monitor to adjust the image settings.  
Front Panel Button  
1
Description  
Use the Up (increase) and Down (decrease) keys to adjust  
items in the OSD menu.  
Up  
Down  
2
3
Use the OK button to confirm your selection.  
OK  
Use the Back button to go back to the previous menu.  
Back  
34  
|
Operating the Monitor  
Using the On-Screen Display (OSD) Menu  
Accessing the Menu System  
NOTE: Any changes you make using the OSD menu are automatically saved if  
you move to another OSD menu, exit the OSD menu, or wait for the OSD menu  
to disappear.  
1 Press the  
button to launch the OSD menu and display the main menu.  
2 Press the  
and  
buttons to move between options. As you move from one  
icon to another, the option name is highlighted.  
3 Press the  
4 Press the  
5 Press  
or  
or  
buttons to select the desired parameter.  
or button, according to the  
button once to activate the highlighted option.  
and  
to enter the slide bar and then use the  
indicators on the menu, to make your changes.  
6 Select the  
to return to previous menu or  
to accept and return to previous  
menu.  
Operating the Monitor  
|
35  
   
Icon Menu and  
Submenus  
Description  
Brightness/  
Contrast  
Use this menu to activate Brightness/Contrast adjustment.  
Brightness  
Brightness adjusts the luminance of the backlight  
(minimum 0; maximum 100).  
Press the  
Press the  
button to increase brightness.  
button to decrease brightness.  
NOTE: Manual adjustment of Brightness is disabled when  
Dynamic Contrast is switched on.  
Contrast  
Adjust the Brightness first, and then adjust Contrast only if  
further adjustment is necessary.  
Press the  
button to increase contrast and press the  
button to decrease contrast (between 0 and 100).  
Contrast adjusts the difference between darkness and lightness  
on the monitor.  
Input Source  
Use the Input Source menu to select between different  
video inputs that are be connected to your monitor.  
36  
|
Operating the Monitor  
 
Icon Menu and  
Submenus  
Description  
DP  
Select DP input when you are using the DP (DisplayPort)  
connector.  
Use  
to select the DP input source.  
mDP  
Select mDP input when you are using the  
mDP (mini DisplayPort) connector.  
Use  
to select the mDP input source.  
HDMI  
Select the HDMI input when you are using the HDMI connector.  
Use  
Use  
to select the HDMI input source.  
Auto Select  
to select Auto Select, the monitor scans for available  
input sources.  
Reset Input  
Source  
Resets your monitor’s Input Source settings to the factory  
defaults.  
Color  
Use the Color menu to adjust the color setting mode.  
Operating the Monitor  
|
37  
Icon Menu and  
Submenus  
Description  
Preset Modes When you select Preset Modes, you can choose Standard,  
ComfortView, Movie, Game, Color Temp. or Custom Color  
from the list.  
Standard: Default color settings. This is the default preset  
mode.  
ComfortView: Decreases the level of blue light emitted from  
the screen to make viewing more comfortable for your eyes.  
NOTE: To reduce the risk of eye strain and neck/arm/back/  
shoulders pain from using the monitor for long periods of time,  
we suggest you to :  
Set the screen about 20 to 28 inches (50-70 cm) from your  
eyes.  
Blink frequently to moisten or rewet your eyes when working  
with the monitor.  
Take regular and frequent breaks for 20 minutes every two  
hours.  
Look away from your monitor and gaze at a distant object at  
20 feet away for at least 20 seconds during the breaks.  
Perform stretches to relieve tension in the neck/arm/back/  
shoulders during the breaks.  
Movie: Ideal for movies.  
Game: Ideal for most gaming applications.  
Color Temp.: The screen appears warmer with a red/yellow tint  
with slider set at 5,000K or cooler with blue tint with slider set  
at 10,000K.  
38  
|
Operating the Monitor  
Icon Menu and  
Submenus  
Description  
Custom Color: Allows you to manually adjust the color settings.  
Press the  
and  
buttons to adjust the Red, Green, and  
Blue values and create your own preset color mode.  
NOTE: When Smart HDR is ON, Movie and Game preset modes  
will operate with backlight local dimming.  
Input Color  
Format  
Allows you to set the video input mode to:  
RGB: Select this option if your monitor is connected to a  
computer (or DVD player) using the HDMI, DP-mDP cable.  
YPbPr: Select this option if your DVD player supports only  
YPbPr output.  
Hue  
Use  
or  
to adjust the hue from 0 to 100.  
NOTE: Hue adjustment is available only for Movie and Game  
mode.  
Saturation  
Reset Color  
Use  
or  
to adjust the saturation from 0 to 100.  
NOTE: Saturation adjustment is available only for Movie and  
Game mode.  
Resets your monitor’s color settings to the factory defaults.  
Operating the Monitor  
|
39  
Icon Menu and  
Submenus  
Description  
Display  
Use the Display menu to adjust image.  
Aspect Ratio Adjust the image ratio to Wide 16:9, 4:3, or 5:4.  
Sharpness  
Makes the image look sharper or softer.  
Use or to adjust the sharpness from ‘0’ to ‘100.  
Dynamic  
Contrast  
Allows you to increase the level of contrast to provide sharper  
and more detailed image quality.  
Push the  
or “Off.  
button to select the Dynamic Contrast “On”  
NOTE: For Game and Movie preset mode only.  
NOTE: Dynamic Contrast provides higher contrast if you select  
Game or Movie preset mode.  
NOTE: when HDR is off, DCR can be set to on,otherwise can’t.  
Response  
Time  
Allows you to set the Response Time to Normal or Fast.  
MST  
DP Multi Stream Transport, Set to ON enables MST(DP out), Set  
to OFF disables MST function.  
Smart HDR  
Use  
or  
to enable or disable High-Dynamic Range.  
Reset Display Restores the display settings to factory defaults.  
40  
|
Operating the Monitor  
Icon Menu and  
Submenus  
Description  
Menu  
Select this option to adjust the settings of the OSD, such as, the  
languages of the OSD, the amount of time the menu remains on  
screen, and so on.  
Language  
Rotation  
Set the OSD display to one of eight languages.  
(English, Spanish, French, German, Brazilian Portuguese, Russian,  
Simplified Chinese, or Japanese).  
Rotates the OSD by 0/90/180/270 degrees.  
You can adjust the menu according to your display rotation.  
Transparency  
Select this option to change the menu transparency by using  
and  
(min. 0 / max. 100).  
Timer  
OSD Hold Time: Sets the length of time the OSD remains active  
after you press a button.  
Use the  
and  
buttons to adjust the slider in 1-second  
increments, from 5 to 60 seconds.  
Reset Menu  
Restore the menu settings to factory defaults.  
Operating the Monitor  
|
41  
Icon Menu and  
Submenus  
Description  
Personalize  
Select from Preset Modes, Brightness/Contrast, Input  
Source, Aspect Ratio,Smart HDR,Rotation set as shortcut key.  
Power Button Allows you to set the state of the power light to save energy.  
LED  
USB  
Allows you to enable or disable USB function during monitor  
standby mode.  
NOTE: USB ON/OFF under standby mode is only available when  
the USB upstream cable is unplugged. This option will be greyed  
out when the USB upstream cable plugs in.  
Monitor  
Sleep  
Sleep After Timeout: Monitor goes into sleep after timeout.  
Never: Monitor never goes into sleep.  
Reset  
Restores shortcut keys to factory defaults.  
Persona-  
lization  
42  
|
Operating the Monitor  
Icon Menu and  
Submenus  
Description  
Other  
Select this option to adjust the OSD settings, such as the  
DDC/CI, LCD conditioning, and so on.  
Display Info  
DDC/CI  
Displays the monitor’s current settings.  
DDC/CI (Display Data Channel/Command Interface) allows you  
to adjust the monitor settings using software on your computer.  
Select Off to turn off this feature.  
Enable this feature for best user experience and optimum  
performance of your monitor.  
Operating the Monitor  
|
43  
Icon Menu and  
Submenus  
Description  
LCD  
Helps reduce minor cases of image retention. Depending on the  
Conditioning degree of image retention, the program may take some time to  
run. Select On to start the process.  
Firmware  
Firmware version  
Reset Others Restores other settings, such as DDC/CI, to factory defaults.  
Factory  
Reset  
Restores all OSD settings to the factory defaults.  
NOTE: This monitor has a built-in feature to automatically calibrate the brightness  
to compensate for LED aging.  
44  
|
Operating the Monitor  
OSD Warning Messages  
When the Dynamic Contrast feature is enabled (in these preset modes: Game or Movie),  
manual brightness adjustment is disabled.  
When the monitor does not support a particular resolution mode, you can see the following  
message:  
This means that the monitor cannot synchronize with the signal that it is receiving from  
the computer. See Monitor Specifications for the Horizontal and Vertical frequency ranges  
addressable by this monitor. Recommended mode is 2560 x 1440.  
You can see the following message before the DDC/CI function is disabled:  
Operating the Monitor  
|
45  
When the monitor enters the Power Save mode, the following message appears:  
Activate the computer and wake up the monitor to gain access to the OSD.  
If you press any button other than the power button, the following messages will appear  
depending on the selected input:  
When user try to change preset mode when Smart HDR is ON, the following message will  
show:  
46  
|
Operating the Monitor  
If either DP, mDP, HDMI input is selected and the corresponding cable is not connected, a  
floating dialog box as shown below appears.  
or  
or  
See Troubleshooting for more information.  
Operating the Monitor  
|
47  
Troubleshooting  
WARNING: Before you begin any of the procedures in this section, follow the  
Self-Test  
Your monitor provides a self-test feature that allows you to check whether your monitor is  
functioning properly. If your monitor and computer are properly connected but the monitor  
screen remains dark, run the monitor self-test by performing the following steps:  
1
Turn off both your computer and the monitor.  
2
Unplug the video cable from the back of the computer. To ensure proper Self-Test  
operation, remove all digital and the analog cables from the back of computer.  
3
Turn on the monitor.  
The floating dialog box should appear on-screen (against a black background), if the monitor  
cannot sense a video signal and is working correctly. While in self-test mode, the power LED  
remains white. Also, depending upon the selected input, one of the dialogs shown below will  
continuously scroll through the screen.  
or  
48  
|
Troubleshooting  
 
or  
4
5
This box also appears during normal system operation, if the video cable becomes  
disconnected or damaged.  
Turn off your monitor and reconnect the video cable; then turn on both your  
computer and the monitor.  
If your monitor screen remains blank after you use the previous procedure, check your video  
controller and computer, because your monitor is functioning properly.  
Troubleshooting  
|
49  
Built-in Diagnostics  
Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality  
you are experiencing is an inherent problem with your monitor, or with your computer and  
video card.  
NOTE: You can run the built-in diagnostics only when the video cable is unplugged  
and the monitor is in self-test mode.  
To run the built-in diagnostics:  
1
Make sure that the screen is clean (no dust particles on the surface of the screen).  
Unplug the video cable(s) from the back of the computer or monitor. The monitor  
then goes into the self-test mode.  
2
3
4
5
6
7
Press and hold Button 1 for 5 seconds. A gray screen appears.  
Carefully inspect the screen for abnormalities.  
Press Button 1 on the front panel again. The color of the screen changes to red.  
Inspect the display for any abnormalities.  
Repeat steps 5 and 6 to inspect the display in green, blue, black, white, and text  
screens.  
The test is complete when the text screen appears. To exit, press Button 1 again.  
If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the  
monitor is functioning properly. Check the video card and computer.  
50  
|
Troubleshooting  
Common Problems  
The following table contains general information about common monitor problems you might  
encounter and the possible solutions:  
Common  
Symptoms  
What You  
Experience  
Possible Solutions  
No Video/Power No picture  
LED off  
Ensure that the video cable connecting the monitor  
and the computer is properly connected and secure.  
Verify that the power outlet is functioning properly  
using any other electrical equipment.  
Ensure that the power button is depressed fully.  
Ensure that the correct input source is selected in  
the Input Source menu.  
No Video/Power No picture or no Increase brightness & contrast controls via OSD.  
LED on  
brightness  
Perform monitor self-test feature check.  
Check for bent or broken pins in the video cable  
connector.  
Run the built-in diagnostics.  
Ensure that the correct input source is selected in  
the Input Source menu.  
Missing Pixels  
LCD screen has • Cycle power on-off.  
spots • Pixel that is permanently off is a natural defect  
that canoccur in LCD technology.  
• For more information on Dell Monitor Quality  
and Pixel Policy, see Dell Support site at:  
Stuck-on Pixels LCD screen has • Cycle power On-Off.  
bright spots • Pixel that is permanently off is a natural defect  
that canoccur in LCD technology.  
• For more information on Dell Monitor Quality  
and PixelPolicy, see Dell Support site at:  
Brightness  
Problems  
Picture too dim Reset the monitor to factory settings.  
or too bright  
Adjust brightness & contrast controls via OSD.  
Safety Related  
Issues  
Visible signs of  
smoke or sparks Contact Dell immediately.  
Do not perform any troubleshooting steps.  
Intermittent  
Problems  
Monitor  
malfunctions on  
& off  
Ensure that the video cable connecting the monitor  
to the computer is connected properly and is  
secure.  
• Reset the monitor to factory settings.  
Perform monitor self-test feature check to  
determine if the intermittent problem occurs in self-  
test mode.  
Troubleshooting  
|
51  
Common  
Symptoms  
What You  
Experience  
Possible Solutions  
Missing Color  
Picture missing  
color  
Perform monitor self-test.  
Ensure that the video cable connecting the monitor  
to the computer is connected properly and is  
secure.  
Check for bent or broken pins in the video cable  
connector.  
Wrong Color  
Picture color not Change the settings of the Preset Modes in the  
good  
Color menu OSD depending on the application.  
Adjust R/G/B value under Custom. Color in Color  
menu OSD.  
Change the Input Color Format to PC RGB or  
YPbPr in the Color menu OSD.  
Run the built-in diagnostics.  
Image retention Faint shadow  
Use the Power Management feature to turn off  
the monitor at all times when not in use (for more  
information, see Power Management Modes).  
Alternatively, use a dynamically changing  
screensaver.  
from a static  
image left on  
the monitor for  
from the static  
image displayed  
appears on the  
a long period of screen  
time  
Product Specific Problems  
Specific  
Symptoms  
What You  
Experience  
Possible Solutions  
Screen image is Image is  
too small centered on  
Check the Aspect Ratio setting in the Display  
menu OSD.  
screen, but does Reset the monitor to factory settings.  
not fill entire  
viewing area  
No Input Signal No picture, the  
Check the signal source. Ensure the computer is  
when user  
controls are  
pressed  
LED light is white not in the power saving mode by moving the mouse  
or pressing any key on the keyboard.  
Check whether the signal cable is plugged in  
properly. Re-plug the signal cable if necessary.  
Reset the computer or video player.  
The picture does The picture  
not fill the entire cannot fill the  
Due to different video formats (aspect ratio) of  
DVDs, the monitor may display in full screen.  
Run the built-in diagnostics.  
screen  
height or width  
of the screen  
52  
|
Troubleshooting  
Specific  
Symptoms  
What You  
Experience  
Possible Solutions  
No image  
Black screen  
Verify which DP standard (DP 1.1a or DP 1.2) is your  
Graphics Card certified to. Download and install the  
latest graphics card driver.  
Some DP 1.1a graphics card cannot support  
DP 1.2 monitors. Go to OSD menu, under Input  
Source selection, press and hold DP select  
key for 8 sec to change the monitor setting from  
DP 1.2 to DP 1.1a.  
when using DP  
connection to  
the PC  
Troubleshooting  
|
53  
 
Appendix  
Safety Instructions  
For displays with glossy bezels the user should consider the placement of the display as the  
bezel may cause disturbing reflections from surrounding light and bright surfaces.  
WARNING: Use of controls, adjustments, or procedures other than those  
specified in this documentation may result in exposure to shock, electrical  
hazards, and/or mechanical hazards.  
For information on safety instructions, see the Safety, Environmental, and Regulatory  
Information (SERI).  
FCC Notices (U.S. only) and Other Regulatory  
Information  
For FCC notices and other regulatory information, see the regulatory compliance website  
Contacting Dell  
NOTE: If you do not have an active Internet connection, you can find contact  
information on your purchase invoice, packing slip, bill, or Dell product catalog.  
Dell provides several online and telephone-based support and service options. Availability  
varies by country and product, and some services may not be available in your area.  
To get online Monitor support content:  
To contact Dell for sales, technical support, or customer service issues:  
1
2
Verify your country or region in the Choose A Country/Region drop-down menu  
at the top-left corner of the page.  
3
4
5
Click Contact Us next to the country dropdown.  
Select the appropriate service or support link based on your need.  
Choose the method of contacting Dell that is convenient for you.  
54  
|
Appendix  
   
Setting Up Your Monitor  
Setting Display Resolution to 2560 x 1440 (maximum)  
For best performance, set the display resolution to 2560 x 1440 pixels by performing the  
following steps:  
In Windows Vista, Windows 7, Windows 8 or Windows 8.1:  
1 For Windows 8 or Windows 8.1 only, select the Desktop tile to switch to classic  
desktop.  
2 Right-click on the desktop and click Screen Resolution.  
3 Click the Dropdown list of the Screen Resolution and select 2560 x 1440.  
4 Click OK.  
In Windows 10:  
1 Right-click on the desktop and click Display Settings.  
2 Click Advanced display settings.  
3 Click the dropdown list of Resolution and select 2560 x 1440.  
4 Click Apply.  
If you do not see the recommended resolution as an option, you may need to update your  
graphics driver. Please choose the scenario below that best describes the computer system  
you are using, and follow the given steps.  
Dell computer  
1 Go to www.dell.com/support, enter your service tag, and download the latest  
driver for your graphics card.  
2 After installing the drivers for your graphics adapter, attempt to set the resolution to  
2560 x 1440 again.  
NOTE: If you are unable to set the resolution to 2560 x 1440, please contact Dell  
to inquire about a graphics adapter that supports these resolutions.  
Appendix  
|
55  
Non-Dell computer  
In Windows Vista, Windows 7, Windows 8 or Windows 8.1:  
1 For Windows 8 or Windows 8.1 only, select the Desktop tile to switch  
to classic desktop.  
2 Right-click on the desktop and click Personalization.  
3 Click Change Display Settings.  
4 Click Advanced Settings.  
5 Identify your graphics controller supplier from the description at the top of the  
window (e.g. NVIDIA, AMD, Intel etc.).  
6 Refer to the graphic card provider website for updated driver (for example,  
7 After installing the drivers for your graphics adapter, attempt to set the resolution  
to 2560 x 1440 again.  
In Windows 10:  
1 Right-click on the desktop and click Display Settings.  
2 Click Advanced display settings.  
3 Click Display adapter properties.  
4 Identify your graphics controller supplier from the description at the top of the  
window (e.g. NVIDIA, AMD, Intel etc.).  
5 Refer to the graphic card provider website for updated driver (for example,  
6 After installing the drivers for your graphics adapter, attempt to set the resolution  
to 2560 x 1440 again.  
NOTE: If you are unable to set the recommended resolution, please contact the  
manufacturer of your computer or consider purchasing a graphics adapter that supports  
the video resolution.  
56  
|
Appendix  
Maintenance Guidelines  
Cleaning Your Monitor  
WARNING: Before cleaning the monitor, unplug the monitor power cable from  
the electrical outlet.  
CAUTION: Read and follow the Safety Instructions before cleaning the monitor.  
For best practices, follow these instructions in the list below while unpacking, cleaning, or  
handling your monitor:  
To clean your anti-static screen, lightly dampen a soft, clean cloth with water. If  
possible, use a special screen-cleaning tissue or solution suitable for the anti-static  
coating. Do not use benzene, thinner, ammonia, abrasive cleaners, or compressed air.  
Use a lightly-dampened, soft cloth to clean the monitor. Avoid using detergent of any  
kind as some detergents leave a milky film on the monitor.  
If you notice white powder when you unpack your monitor, wipe it off with a cloth.  
Handle your monitor with care as a darker-colored monitor may get scratched and  
show white scuff marks more than a lighter- colored monitor.  
To help maintain the best image quality on your monitor, use a dynamically changing  
screen saver and turn off your monitor when not in use.  
Appendix  
|
57  

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