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Dell™ U2312HM Flat Panel Monitor
User Guide
Setting the display resolution to 1920 x 1080 (maximum)
Information in this document is subject to change without notice.
© 2011 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc; Microsoft and Windows are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries, Intel is a registered trademark of Intel Corporation in the U.S. and other countries; and ATI is a trademark of Advanced Micro Devices, Inc. ENERGY STAR is a registered trademark of the U.S. Environmental
Protection Agency. As an ENERGY STAR partner, Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Model U2312HMt
June 2011 Rev. A00
Dell™ U2312HM Flat Panel Monitor User's Guide
Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Information in this document is subject to change without notice.
© 2011 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc; Microsoft
Corporation in the U.S. and other countries; and ATI is a trademark of Advanced Micro Devices, Inc. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner, Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency. and Windows registered trademarks of Microsoft Corporation in the United States and/or other countries, Intel is a registered trademark of Intel are either trademarks or
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Model U2312HMt
June 2011 Rev. A00
Setting Up Your Monitor
Dell™ U2312HM Flat Panel Monitor
Setting the display resolution to 1920 x 1080 (maximum)
For maximum display performance with Microsoft
1080 pixels by performing the following steps:
® Windows ® operating systems, set the display resolution to 1920 x
In Windows XP:
1. Right-click on the desktop and click Properties .
2. Select the Settings tab.
3. Move the slider-bar to the right by pressing and holding the left-mouse button and adjust the screen resolution to
1920 x 1080 .
4. Click OK .
In Windows Vista
® or Windows
®
7:
1. Right-click on the desktop and click Personalization .
2. Click Change Display Settings .
3. Move the slider-bar to the right by pressing and holding the left-mouse button and adjust the screen resolution to
1920 x 1080 .
4. Click OK .
If you do not see 1920 x 1080 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 provided directions:
1: If you have a Dell™ desktop or a Dell™ portable computer with internet access.
2: If you have a non Dell™ desktop, portable computer, or graphics card.
About Your Monitor
Dell™ U2312HM Flat Panel Monitor User's Guide
Identifying Parts and Controls
Universal Serial Bus (USB) Interface
LCD Monitor Quality and Pixel Policy
Package Contents
Your monitor ships with the components shown below. Ensure that you have received all the components and
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.
NOTE: To set up with any other stand, please refer to the respective stand setup guide for setup instructions.
Monitor
Stand
Power Cable
VGA Cable
DVI Cable
USB up stream cable (enables the USB ports on the monitor)
Quick Setup Guide media
Product and Safety Information Guide
Product Features
The U2312HM flat panel display has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD). The monitor features include:
■ 23-inch (58.42 cm) viewable area display (Measured diagonally). 1920 x 1080 resolution, plus full-screen support for lower resolutions.
■ Wide viewing angle to allow viewing from a sitting or standing position, or while moving from side-to-side.
■ Tilt, swivel, vertical extension and rotate adjustment capability. (with Enhanced Menu Rotation).
■ Removable pedestal and Video Electronics Standards Association (VESA
™
) 100 mm mounting holes for flexible mounting solutions.
■ 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), PowerNap software application and product documentation.
■ Energy Saver feature for Energy Star compliance.
■ Security lock slot.
■ Asset Management Capability.
■ Capability to switch from wide aspect to standard aspect ratio while maintaining the image quality.
■ EPEAT Gold Rating.
■ Halogen Reduced.
■ Arsenic-Free glass and Mercury Free for Panel only.
■ Energy Gauge shows the energy level being consumed by the monitor in real time.
■ High Dynamic Contrast Ratio (DCR).
■ PowerNap and Dynamic Dimming Software included (comes in the CD attached with the monitor).
■ TCO Certified Displays.
Identifying Parts and Controls
Front View
Front View
Label Description
1 Preset Modes (default, but configurable)
2 Brightness & Contrast (default, but configurable)
3 Menu
4 Exit
5 Power (with power light indicator)
Back View
Front panel controls
7
8
5
6
Back view
Label
1
Back view with monitor stand
Description
VESA mounting holes (100 mm x 100 mm
- behind attached VESA Plate)
Use
Wall mount monitor using VESA-compatible wall mount kit (100 mm x 100 mm) .
2
3
4
Regulatory label
Stand release button
Security lock slot
Lists the regulatory approvals.
Release stand from monitor.
Secures monitor with security cable lock.
Dell Soundbar mounting brackets
Barcode serial number label
USB downstream ports
Cable management slot
Attaches the optional Dell Soundbar.
Refer to this label if you need to contact Dell for technical support.
Connect your USB devices.
Use to organize cables by placing them through the slot.
Side View
Left view
Bottom View
Right view
Bottom view
Label
1
Description
AC power cord connector
2 DC power connector for Dell Soundbar.
Bottom view with monitor stand
Use
Connect the power cable
Connect the power cord for the soundbar (optional)
5
6
3
4
DisplayPort connector
DVI connector
VGA connector
USB upstream port
7 USB downstream ports
8 Stand lock feature
Connect your computer DP cable
Connect your computer DVI cable
Connect your computer VGA cable
Connect the USB cable that came with your monitor to the monitor connectors on the side and bottom of the monitor
Connect your USB devices. You can only use this connector after you connector on the monitor.
(screw not provided)
Monitor Specifications
Flat Panel Specifications
Screen type
Panel type
Screen dimensions
Preset display area:
Horizontal
Vertical
Pixel pitch
Viewing angle
Luminance output
Contrast ratio
Faceplate coating
Backlight
Response Time
Color depth
Color Gamut
Active matrix - TFT LCD
IPS
23 inches (23-inches viewable image size)
509.2 (H) X 286.4 (V) mm
509.2 mm (20.05 inches)
286.4 mm (11.28 inches)
0.265 mm
178° (vertical) typical
178° (horizontal) typical
300 cd/m²(typical)
1000 to 1 (typical), 2M : 1 (typical Dynamic Contrast On)
Antiglare with hard-coating 3H
LED edgelight system
8 ms gray-to-gray (typical)
16.7 million colors
82%*
*[U2312HM] color gamut (typical) is based on CIE1976 (82%) and CIE1931 (72%) test standards.
Resolution Specifications
Horizontal scan range
Vertical scan range
Maximum preset resolution
30 kHz to 83 kHz (automatic)
56 Hz to 76 Hz (automatic)
1920 x 1080 at 60 Hz
Supported Video Modes
Video display capabilities (DVI & DP playback) 480p, 576p, 720p, 1080p, 480i, 576i, 1080i
Preset Display Modes
Display Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (Horizontal/Vertical)
VESA, 720 x 400
VESA, 640 x 480
VESA, 640 x 480
31.5
31.5
37.5
70.0
60.0
75.0
28.3
25.2
31.5
-/+
-/
-/
VESA, 800 x 600
VESA, 800 x 600
VESA, 1024 x 768
VESA, 1024 x 768
37.9
46.9
48.4
60.0
60.0
75.0
60.0
75.0
40.0
49.5
65.0
78.8
+/+
+/+
-/
+/+
VESA, 1152 x 864
VESA, 1280 x 1024
VESA, 1280 x 1024
VESA, 1920 x 1080
67.5
64.0
80.0
67.5
75.0
60.0
75.0
60.0
108.0
108.0
135.0
148.5
+/+
+/+
+/+
+/+
Electrical Specifications
Video input signals
Synchronization input signals
Analog RGB, 0.7 Volts +/- 5%, positive polarity at 75 ohm input impedance
Digital DVI-D TMDS, 600mV for each differential line, positive polarity at 50 ohm input impedance
TTL levels required and separate syncs (including Trigger points), SOG (Composite
SYNC on green)
AC input voltage/frequency/current
Inrush current
100 to 240 VAC / 50 or 60 Hz + 3 Hz / 1.5 A (Typical)
120 V : 30 A (Max)
240 V : 60 A (Max)
Physical Characteristics
Connector type
Signal cable type
15-pin D-subminiature, blue connector; DVI-D, white connector;
DP, black connector.
Digital: Detachable, DVI-D, Solid pins, shipped detached from the monitor
Analog: attachable, D-Sub, 15pins, shipped detached from the monitor
Dimensions (with stand)
Height (extended)
Height (compressed)
Width
Depth
Dimensions (without stand)
Height
Width
Depth
Stand dimensions
Height (extended)
Height (compressed)
Width
Depth
Weight
Weight with packaging
Weight with stand assembly and cables
Weight without stand assembly
493.9 mm (19.44 inches)
365.0 mm (14.37 inches)
546.4 mm (21.51 inches)
185.4 mm (7.30 inches)
323.3 mm (12.73 inches)
546.4 mm (21.51 inches)
59.5 mm (2.34 inches)
401.2 mm (15.80 inches)
358.1 mm (14.10 inches)
279.8 mm (11.02 inches)
180.3 mm (7.10 inches)
6.47 kg (14.26 lbs)
5.18 kg (11.42 lbs)
2.96 kg (6.53 lbs)
considerations - no cables)
Weight of stand assembly
Front Frame Gloss
1.72 kg (3.79 lbs)
5.0 gloss unit (max.) (Black Frame)
20.0 gloss unit (max.) (Silver Frame)
Environmental Characteristics
Temperature
Operating
Non-operating
Humidity
Operating
Non-operating
Altitude
Operating
Non-operating
Thermal dissipation
0 °C to 40 °C
Storage: -20 °C to 60 °C (-4 °F to 140 °F)
Shipping: -20 °C to 60 °C (-4 °F to 140 °F)
10% to 80% (non-condensing)
Storage: 5% to 90% (non-condensing)
Shipping: 5% to 90% (non-condensing)
3,048 m (10,000 ft) max
10,668 m (35,000 ft) max
238.85 BTU/hour (maximum)
102.36 BTU/hour (typical)
Power Management Modes
as Power Save Mode *. If the computer detects input from 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 Sync Vertical Sync Video
Normal operation Active Active Active
Active-off mode
Switch off
Inactive
-
Inactive
-
Blanked
-
Power Indicator
Blue
Amber
Off
Power Consumption
70W (maximum) **
30W (typical)
Less than 0.5 W
Less than 0.5 W
The OSD will only function in the normal operation mode. When any button is pressed in Active-off mode, one of the following messages will be displayed:
Activate the computer and the monitor to gain access to the OSD.
NOTE: This monitor is ENERGY STAR
®
-compliant.
* Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the monitor.
** Maximum power consumption with max luminance, Dell Soundbar, and USB active.
Pin Assignments
VGA Connector
Pin
Number
15-pin Side of the Connected Signal Cable
1 Video-Red
2
3
Video-Green
Video-Blue
4 GND
5
6
11
12
13
14
15
7
8
9
10
Self-test
GND-R
GND-G
GND-B
Computer 5V/3.3V
GND-sync
GND
DDC data
H-sync
V-sync
DDC clock
DVI Connector
Pin
Number
1
2
3
4
5
6
7
8
24-pin Side of the Connected Signal Cable
TMDS RX2
TMDS RX2+
TMDS Ground
Floating
Floating
DDC Clock
DDC Data
Floating
19
20
21
22
15
16
17
18
23
24
9
10
11
12
13
14
TMDS RX1
TMDS RX1+
TMDS Ground
Floating
Floating
+5V/+3.3V power
Self test
Hot Plug Detect
TMDS RX0
TMDS RX0+
TMDS Ground
Floating
Floating
TMDS Ground
TMDS Clock+
TMDS Clock-
DisplayPort Connector
Pin
Number
1
2
3
4
5
6
20-pin Side of the Connected Signal Cable
ML0(p)
GND
ML0(n)
ML1(p)
GND
ML1(n)
12
13
14
15
16
17
7
8
9
10
11
18
19
20
ML2(p)
GND
ML2(n)
ML3(p)
GND
ML3(n)
GND
GND
AUX(p)
GND
AUX(n)
HPD
DP_PWR Return
+3.3V DP_PWR
Plug and Play Capability
using Display Data Channel (DDC) protocols so the system 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
Universal Serial Bus (USB) Interface
This section gives you information about the USB ports that are available on the left side of your monitor.
NOTE: This monitor supports High-Speed Certified USB 2.0 interface.
Transfer speed
High speed
Full speed
Low speed
Data
Rate
Power Consumption
480 Mbps 2.5W (Max., each port)
12 Mbps 2.5W (Max., each port)
1.5 Mbps 2.5W (Max., each port)
USB Upstream Connector
Pin Number 4-pin Side of the Connector
1
DMU
2
3
VCC
DPU
4
GND
USB Downstream Connector
Pin Number
1
2
3
4
4-Pin Side of the Signal Cable
VCC
DMD
DPD
GND
USB Ports
1 upstream - back
4 downstream - 2 on back; 2 on left side
NOTE: USB 2.0 functionality requires a USB 2.0-capable computer
NOTE: The monitor's USB interface works only when the monitor is on or in 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.
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 Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com
.
Maintenance Guidelines
Cleaning Your Monitor
WARNING:
Read and follow the safety instructions
before cleaning the monitor.
WARNING: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet.
For best practices, follow the instructions in the list below while unpacking, cleaning, or handling your monitor:
To clean your antistatic screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the antistatic coating. Do not use benzene, thinner, ammonia, abrasive cleaners, or compressed air.
Use a lightly-dampened, warm 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 scratch 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.
Setting Up the Monitor
Dell™ U2312HM Flat Panel Monitor User's Guide
Attaching the Soundbar (optional)
Attaching the Stand
NOTE: The stand is detached when the monitor is shipped from the factory.
NOTE: This is applicable for a monitor with a stand. When any other stand is bought, please refer to the respective stand setup guide for set up instructions.
To attach the monitor stand:
1. Remove the cover and place the monitor on it.
2. Fit the two tabs on the upper part of the stand to the groove on the back of the monitor.
3. Press the stand till it snaps into its place.
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 and disconnect the power cable.
Connect the blue (VGA) cable from your monitor to your computer.
NOTE: If your computer supports a white DVI connector, unscrew and detach the blue (VGA) cable from the monitor and then connect the White DVI cable to the monitor and the white DVI connector on your computer.
NOTE: Do not connect the blue VGA, the white DVI, or the black DisplayPort cables to the computer at the same time.
2. Connect the white (digital DVI-D) or the blue (analog VGA) or the black (DisplayPort) display connector cable to the corresponding video port on the back of your computer. Do not use the three cables on the same computer. Use all the cables only when they are connected to three different computers with appropriate video systems.
Connecting the white DVI cable
Connecting the blue VGA cable
Connecting the black DisplayPort cable
CAUTION: The Graphics are used for the purpose of illustration only. Appearance of the computer may vary.
Connecting the USB cable
After you have completed connecting the DVI/VGA/DP cable, follow the procedure below to connect the USB cable to the computer and complete your monitor setup:
1. Connect the upstream USB port (cable supplied) to an appropriate USB port on your computer. (See
view for details.)
2. Connect USB peripherals to the downstream USB ports (side or bottom) on the monitor. (See
or
view for details.)
3. Plug the power cables for your computer and monitor into a nearby outlet.
4. Turn on the monitor and the computer.
If your monitor displays an image, installation is complete. If it does not display an image, see
Organizing Your Cables
After attaching all necessary cables to your monitor and computer, (See
for cable attachment,) use the cable management slot to organize all cables as shown above.
Attaching the Soundbar (Optional)
CAUTION: Do not use with any device other than the Dell Soundbar.
NOTE: The Soundbar power connector (+12 V DC output) is for the optional Dell Soundbar only.
To attach the Soundbar:
1. Working from the back of the monitor, attach the Soundbar by aligning the two slots with the two tabs along the bottom of the monitor.
2. Slide the Soundbar to the left until it snaps into place.
3. Connect the Soundbar with the DC power connector.
4. Insert the mini stereo plug from the back of the Soundbar into the computer's audio output jack.
Removing the Stand
NOTE: To prevent scratches on the LCD screen while removing the stand, ensure that the monitor is placed on a soft, clean surface.
NOTE: This is applicable for a monitor with a stand. When any other stand is bought, please refer to the respective stand setup guide for set up instructions.
To remove the stand:
2. Press and hold the Stand release button.
3. Lift the stand up and away from the monitor.
Wall Mounting (Optional)
(Screw dimension: M4 x 10 mm).
Refer to the instructions that come with the VESA-compatible base mounting kit.
1. Place the monitor panel on a soft cloth or cushion on a stable flat table.
2. Remove the stand.
3. Use a screwdriver to remove the four screws securing the plastic cover.
4. Attach the mounting bracket from the wall mounting kit to the LCD.
NOTE: For use only with UL Listed Wall Mount Bracket with minimum weight/load bearing capacity of 2.96 kg.
Operating the Monitor
Dell™ U2312HM Flat Panel Monitor User's Guide
Using the Front Panel Controls
Using the On-Screen Display (OSD) Menu
PowerNap with Enhanced Menu Rotation Software
Setting the Maximum Resolution
Using the Dell Soundbar (Optional)
Using the Tilt, Swivel, and Vertical Extension
Adjusting the Rotation Display Settings of Your System
Using the Front Panel
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.
The following table describes the front panel buttons:
1
Front panel Button Description
Use this button to choose from a list of preset color modes.
Shortcut key/
Preset
Modes
2 Use this button to directly access the "Brightness/Contrast" menu.
Brightness/Contrast
3 Use the MENU button to launch the on-screen display (OSD) and select the OSD Menu. See
.
Menu
4 Use this button to go back to the main menu or exit the OSD main menu.
Exit
5
Power
(with power light indicator)
Use the Power button to turn the monitor on and off.
The Blue LED indicates the monitor is on and fully functional. An amber LED indicates DPMS power save mode.
Using the On-Screen Display (OSD) Menu
Accessing the Menu System
NOTE: If you change the settings and then either proceed to another menu or exit the OSD menu, the monitor automatically saves those changes. The changes are also saved if you change the settings and then wait for the OSD menu to disappear.
1. Push the button to launch the OSD menu and display the main menu.
2. Push the and buttons to move between the setting options. As you move from one icon to another, the option name is highlighted. See the following
3. Push the button once to activate the highlighted option.
4. Push and button to select the desired parameter.
5. Push to enter the slide bar and then use the and buttons, according to the indicators on the menu, to make your changes.
6. Select the
Icon button to return to the main menu.
Menu and
Submenus
Brightness / Contrast Use this menu to activate Brightness/Contrast adjustment.
Description
Brightness Brightness adjusts the luminance of the backlight.
Push the button to increase brightness and push the button to decrease brightness (min 0 ~ max 100).
Contrast Adjust Brightness first, and then adjust Contrast only if further adjustment is necessary.
Push the button to increase contrast and push the button to decrease contrast (min 0 ~ max 100).
Auto Adjust Even though your computer recognizes your monitor on startup, the Auto Adjustment function optimizes the display settings for use with your particular setup.
Auto Adjustment allows the monitor to self-adjust to the incoming video signal. After using Auto Adjustment, you can further tune your monitor by using the Pixel Clock (Coarse) and Phase (Fine) controls under Image Settings.
Input Source
NOTE: In most cases, Auto Adjust produces the best image for your configuration.
NOTE: Auto Adjust option is only available when you are using the analog (VGA) connector.
Use the Input Source menu to select between different video signals that may be connected to your monitor.
Auto Select
VGA
DVI-D
DisplayPort
Color Settings
Push to select the Auto Select , the monitor will auto detect either VGA input or DVI-D input or DislpayPort input.
Select VGA input when you are using the analog (VGA) connector. Push to select the VGA input source.
Select
Select
DVI-D input when you are using the Digital (DVI) connector. Push
DisplayPort input to select the DVI input source. when you are using the DisplayPort (DP) connector. Push to select the DisplayPort input source.
Use the Color Settings to adjust the color setting mode and color temperature.
There are different color setting sub-menus for VGA/DVI-D and Video input.
Input Color Format Choose the RGB option if monitor is connected to a computer or a DVD using a VGA or DVI cable. Choose the YPbPr option if monitor is connected to a DVD by a YPbPr to VGA cable or if the DVD color output setting is not RGB.
Gamma Allows you to set the color mode to PC or MAC.
Preset Modes You can choose Standard, Multimedia, Movie, Game, Text, Color Temperature, or Custom Color;
Standard : Loads the monitor's default color settings. This is the default preset mode.
Multimedia : Loads color settings ideal for multimedia applications.
Movie : Loads color settings ideal for most movie applications.
Game : Loads color settings ideal for most gaming applications.
Text : Loads color settings ideal for text.
temperature. The screen appears cooler with a blue tint.
Color Temperature : Increase the color temperature. The screen appears warmer with a red/yellow tint. Decreases the color
Hue
Custom Color : Allows you to manually adjust the color settings. Press the
G, B) values and create your own preset color mode. and buttons to adjust the three colors (R,
This feature can shift color of video image to green or purple. This is used to adjust the desired flesh tone color. Use adjust the hue from '0' to '100'.
Press
Press to increase the green shade of the video image. to increase the purple shade of the video image.
NOTE: Hue adjustment is available only for Movie and Game mode. or to
Saturation
This feature can adjust the color saturation of the video image. Use
Press
Press to increase the monochrome appearance of the video image. to increase the colorful appearance of the video image. or
Reset Color Setting s
Display Settings
NOTE: Saturation adjustment is available only for Movie and Game mode.
Reset your monitor color settings to the factory settings.
Use the Display Settings to adjust image. to adjust the saturation from '0' to '100'.
Aspect Ratio
Horizontal Position
Adjust the image ratio as wide 16:9, 4:3 or 5:4.
Use the or to adjust image left or right. Minimum is '0' (-). Maximum is '100' (+).
Vertical Position
Use the or to adjust image up or down. Minimum is '0' (-). Maximum is '100' (+).
NOTE: Horizontal Position and Vertical Position Adjustments are only available for "VGA" input.
Sharpness
Pixel Clock
This feature can make the image look sharper or softer. Use or to adjust the sharpness from '0' to '100'.
The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference.
Use the or to adjust for best image quality.
Phase
Dynamic Contrast
Reset Display
Settings
Other Settings
If satisfactory results are not obtained using the Phase adjustment, use the Pixel Clock (coarse) adjustment and then use Phase (fine), again.
NOTE: Pixel Clock and Phase Adjustments are only available for "VGA" input.
Dynamic Contrast adjusts the contrast ratio to 2M : 1.
Push the button to select the Dynamic Contrast "On" or "Off" .
NOTE: Dynamic Contrast provides higher contrast if you choose Game mode and Movie mode.
Select this option to restore default display settings.
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 Language option to set the OSD display to one of eight languages (English, Espanol, Francais, Deutsch, Brazilian Portuguese, Russian,
Simplified Chinese or Japanese).
Menu Transparency
Menu Timer
Select this option to change the menu transparency by pressing and buttons (Minimum: 0 ~ Maximum: 100).
OSD Hold Time: Sets the length of time the OSD will remain active after the last time you pressed a button.
Menu Lock
Menu Rotation
Use the or to adjust the slider in 1 second increments, from 5 to 60 seconds.
Controls user access to adjustments. When Lock is selected, no user adjustments are allowed. All buttons are locked.
NOTE: Lock function – Either soft lock (through OSD menu) or hard lock (Press and hold the button above power button for 10 sec)
Unlock function– Only hard unlock (Press and hold the button above power button for 10 sec)
Rotates the OSD by 90 degrees counter-clockwise. You can adjust the menu according to your
Energy Smart When Energy Smart is switched On, the Brightness function shall be disabled.
When the Energy Smart is Off, Brightness function shall be activated.
The text and the icon of “Dynamic Contrast” shall be deactivated and grey out.
When Energy Smart is On, monitor will adjust brightness dynamically according to the screen content for saving power consumption.
When Energy Smart is On, The 'Energy Use indicator' on OSD menu should response to the changes in the screen content.
Power Save Audio To turn on or off Audio Power during Power Save mode.
DDC/CI / DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color balance etc) to be adjustable via software on your computer. You can disable this feature by selecting "Disable".
Enable this feature for best user experience and optimum performance of your monitor.
LCD Conditioning Helps reduce minor cases of image retention. Depending on the degree of image retention, the program may take some time to run. You can enable this feature by selecting "Enable".
Factory Reset
Personalize
Reset all OSD settings to the factory preset values.
User can select from "Preset Modes", "Brightness/Contrast", "Auto Adjust", "Input Source" and set as shortcut key.
OSD Warning Messages
When Dynamic Contrast Feature is enabled (in these modes: Game and Movie), the manual brightness adjustment is disabled.
When the monitor does not support a particular resolution mode you will see the following message:
This means that the monitor cannot synchronize with the signal that it is receiving from the computer. See
for the Horizontal and
Vertical frequency ranges addressable by this monitor. Recommended mode is 1920 x 1080.
You will see the following message before the DDC/CI function is disabled.
When monitor enters Power Save mode, the following message appears:
Activate the computer and wake up the monitor to gain access to the
If you press any button other than the power button one of the following messages will appear depending on the selected input:
VGA/DVI-D/DP input
If either VGA or DVI-D or DP input is selected and both VGA and DVI-D cables are not connected, a floating dialog box as shown below appears. or or
See
for more information.
PowerNap with Enhanced Menu Rotation Software
The PowerNap with Enhanced Menu Rotation software comes in the CD that shipped with the monitor you have just purchased. This software provides two functions – power-saving mode and allows for easy pivoting from landscape to portrait and vice versa.
The power-saving mode allows the user to select "Screen dim" or " Sleep" when the PC goes to the screensaver mode.
1. Screen dim - monitor dims to minimum brightness level when the PC is in the screensaver mode.
2. Sleep - monitor goes into the sleep mode when the PC is in the screensaver mode.
The Enhanced Menu Rotation function allows for pivoting of the monitor screen from the Monitor On Screen Menu Control, selection of “Landscape” and “Portrait” will trigger the monitor screen accordingly.
NOTE: PowerNap with Enhanced Menu Rotation function operates on VGA and DVI interface only.
Picture of Enhanced Menu Rotation screen shot (OSD Menu selections to trigger Enhanced Menu Rotation function)
NOTE: After installation, one desktop shortcut and one shortcut under "Start" for PowerNap are created.
OS support: Windows XP32, XP64, Vista32, Vista64, Win 7.
Output interface support: VGA and DVI.
The latest version of the PowerNap Software can be downloaded from Dell’s website. This will ensure that the software is compatible with your graphics card.
Steps to download software:
Go to http://www.support.dell.com
Setting the Maximum Resolution
To set the Maximum resolution for the monitor:
Windows XP:
1. Right-click on the desktop and select Properties .
2. Select the
4. Click OK .
Settings tab.
3. Set the screen resolution to 1920 x 1080 .
Windows Vista ® or Windows ® 7:
2. Click Change Display Settings .
Personalization .
3. Move the slider-bar to the right by pressing and holding left-mouse button and adjust the screen resolution to 1920 x 1080 .
4. Click OK .
If you do not see 1920 x 1080 as an option, you may need to update your graphics driver. Depending on your computer, complete one of the following procedures:
If you have a Dell desktop or portable computer:
Go to support.dell.com
, enter your service tag, and download the latest driver for your graphics card.
If you are using a non-Dell computer (portable or desktop):
Go to the support site for your computer and download the latest graphic drivers.
Go to your graphics card website and download the latest graphic drivers.
Using the Dell Soundbar (Optional)
The Dell Soundbar is a stereo two channel system adaptable to mount on Dell Flat Panel Displays. The Soundbar has a rotary volume and on/off control to adjust the overall system level, a blue LED for power indication, and two audio headset jacks.
1. Attach mechanism
2. Headphone jacks
3. Power indicator
4. Power/Volume control
Using the Tilt, Swivel, and Vertical Extension
NOTE: This is applicable for a monitor with a stand. When any other stand is bought, please refer to the respective stand setup guide for set up instructions.
Tilt, Swivel
With the built-in pedestal, you can tilt the monitor for the most comfortable viewing angle.
NOTE: The stand is detached when the monitor is shipped from the factory.
Vertical Extension
NOTE: The stand extends vertically up to 130 mm. The figures below illustrate how to extend the stand vertically.
Rotating 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 this monitor. To download the graphics driver, go to support.dell.com and see the Download section for Video Drivers for latest driver updates.
NOTE: When in Portrait View Mode , you may experience performance degradation in graphic-intensive applications (3D Gaming 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 .
2. Select the Settings tab and click Advanced .
3. If you have an ATI graphics card, select the Rotation tab and set the preferred rotation.
If you have an nVidia graphics card, click the
If you have an Intel
® nVidia graphics card, select the Intel tab, in the left-hand column select graphics tab, click
NVRotate
Graphic Properties
, and then select the preferred rotation.
, 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 support.dell.com and download the latest driver for your graphics card.
Troubleshooting
Dell™ U2312HM Flat Panel Monitor User's Guide
Universal Serial Bus Specific Problems
WARNING:
Before you begin any of the procedures in this section, follow the Safety Instructions
.
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 (white connector) and the Analog (blue
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 blue. Also, depending upon the selected input, one of the dialogs shown below will continuously scroll or or
4. This box also appears during normal system operation if the video cable becomes disconnected or damaged.
5. Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor. properly.
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. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Unplug the video cable(s) from the back of the computer or monitor. The monitor then goes into the self-test mode.
3. Press and hold the
6. Inspect the display for any abnormalities.
Button 1
5. Press the Button 4 on the front panel again. The color of the screen changes to red. and Button 4 on the front panel simultaneously for 2 seconds. A gray screen appears.
4. Carefully inspect the screen for abnormalities.
7. Repeat steps 5 and 6 to inspect the display in green, blue, black, white screens.
The test is complete when the white screen appears. To exit, press the Button 4 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.
Common Problems
The following table contains general information about common monitor problems you might encounter and the possible solutions.
Common Symptoms
No Video/Power LED off
What You Experience
No picture
Possible Solutions connected and secure.
Verify that the power outlet is functioning properly using any other electrical equipment.
Ensure that the power button is depressed fully.
button.
No Video/Power LED on
Poor Focus
No picture or no brightness
Picture is fuzzy, blurry, or ghosting
Increase brightness & contrast controls via OSD.
Perform monitor self-test feature check.
Check for bent or broken pins in the video cable connector.
Run the built-in diagnostics.
button.
Perform Auto Adjust via OSD.
Adjust the Phase and Pixel Clock controls via OSD.
Eliminate video extension cables.
Reset the monitor to Factory Settings.
Shaky/Jittery Video Wavy picture or fine movement
Missing Pixels
Stuck-on Pixels
Brightness Problems
Geometric Distortion
LCD screen has spots
LCD screen has bright spots
Picture too dim or too bright
Screen not centered correctly
Perform Auto Adjust via OSD.
Adjust the Phase and Pixel Clock controls via OSD.
Reset the monitor to Factory Settings.
Check environmental factors.
Cycle power on-off.
Pixel that is permanently off is a natural defect that can occur in LCD technology.
For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com
.
Cycle power on-off.
Pixel that is permanently off is a natural defect that can occur in LCD technology.
For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com
.
Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Horizontal/Vertical Lines Screen has one or more lines
NOTE: When using DVI-D input, the positioning adjustments are not available.
Reset the monitor to Factory Settings.
Perform Auto Adjust via OSD.
Adjust Phase and Pixel Clock controls via OSD.
Perform monitor self-test feature check and determine if these lines are also in self-test mode.
Synchronization Problems
Safety Related Issues
Intermittent Problems
Missing Color
Wrong Color
Screen is scrambled or appears torn
NOTE: When using DVI-D input, the Pixel Clock and Phase adjustments are not available.
Reset the monitor to Factory Settings.
Perform Auto Adjust via OSD.
Restart the computer in the safe mode .
Perform monitor self-test feature check to determine if the scrambled screen appears in self-test mode.
Check for bent or broken pins in the video cable connector.
Visible signs of smoke or sparks
Do not perform any troubleshooting steps.
Contact Dell immediately.
Monitor malfunctions on & off
Check for bent or broken pins in the video cable connector.
Run the built-in diagnostics.
Picture missing color
Picture color not good
Image retention from a static Faint shadow from the static the screen
Reset the monitor to Factory Settings.
properly and is secure.
Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.
Perform monitor self-test feature check.
Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.
Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depending on the application.
Settings OSD if the Color Management is turned off.
Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.
Run the built-in diagnostics.
Use the Power Management feature to turn off the monitor at all times when not in use
(for more information, see
Alternatively, use a dynamically changing screensaver.
Product Specific Problems
Specific Symptoms
Screen image is too small
Cannot adjust the monitor with the buttons on the front panel
No Input Signal when user controls are pressed
The picture does not fill the entire screen.
What You Experience
Image is centered on screen, but does not fill entire viewing area
OSD does not appear on the screen
No picture, the LED light is green. When you press "+", "-" or "Menu" key, the message
"No S-Video input signal", or
"No Composite input signal", or appears
"No Component input signal"
The picture cannot fill the height or width of the screen
Possible Solutions
Check the Scaling Ratio setting in Image Setting OSD
Reset the monitor to Factory Settings.
seconds to unlock. See Menu Lock
.
Check the signal source. Ensure the Computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard.
Check to make sure Video Source to S-Video, Composite or Component is powered and playing video media.
Check whether the signal cable is plugged in properly. Re-plug the signal cable if necessary.
Reset the computer or video player.
Due to different video formats (aspect ratio) of DVDs, the monitor may display in full screen.
Run the built-in diagnostics.
NOTE: When choosing DVI-D mode, the Auto Adjust function will not be available.
Universal Serial Bus (USB) Specific Problems
Specific Symptoms What You Experience
USB interface is not working USB peripherals are not working
High Speed USB 2.0 interface is slow.
High Speed USB 2.0 peripherals working slowly or not working at all
Possible Solutions
Check that your monitor is turned ON.
Reconnect the upstream cable to your computer.
Reconnect the USB peripherals (downstream connector).
Switch off and then turn on the monitor again.
Reboot the computer.
Some USB devices like external portable HDD require higher electric current; connect
Check that your computer is USB 2.0-capable.
Some computers have both USB 2.0 and USB 1.1 ports. Ensure that the correct USB port is used.
Reboot the computer.
Reconnect the upstream cable to your computer.
Reconnect the USB peripherals (downstream connector).
Dell™ Soundbar Problems
Common Symptoms
No Sound
What You Experience
No power to Soundbar - the power indicator is off
Possible Solutions the power indicator (Blue LED) on the front of the Soundbar is illuminated.
Confirm that the power cable from the Soundbar is plugged into the adapter.
No Sound
Distorted Sound
Distorted Sound
Low Volume
Unbalanced Sound Output
Soundbar has power - power indicator is on
Computer's sound card is used as the audio source
Other audio source is used
Sound from only one side of
Soundbar
Volume is too low
Plug the audio line-in cable into the computer's audio out jack.
Set all Windows volume controls to their maximum
Turn the Power/Volume knob on the Soundbar clockwise to a higher volume setting.
Clean and reseat the audio line-in plug.
Play some audio content on the computer (i.e. audio CD, or MP3).
Test the Soundbar using another audio source (i.e. portable CD player).
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the sound card.
Decrease the volume of the audio application.
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower volume setting.
Clean and reseat the audio line-in plug.
Troubleshoot the computer's sound card.
Test the Soundbar using another audio source (i.e. portable CD player).
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the audio source.
Decrease the volume of the audio source.
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower volume setting.
Clean and reseat the audio line-in plug.
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the sound card or audio source.
Set all Windows audio balance controls (L-R) to their midpoints.
Clean and reseat the audio line-in plug.
Troubleshoot the computer's sound card.
Test the Soundbar using another audio source (i.e. portable CD player).
Clear any obstructions between the Soundbar and the user.
Turn the Power/Volume knob on the Soundbar clockwise to the maximum volume setting.
Set all Windows volume controls to their maximum.
Increase the volume of the audio application.
Appendix
Dell™ U2312HM Flat Panel Monitor User's Guide
FCC Notice (U.S. Only) and Other Regulatory Information
WARNING: Safety Instructions
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 Product Information Guide .
FCC Notices (U.S. Only) and Other Regulatory Information
For FCC notices and other regulatory information, see the regulatory compliance website located at www.dell.com\regulatory_compliance .
Contacting Dell
For customers in the United States, call 800-WWW-DELL (800-999-3355).
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 contact Dell for sales, technical support, or customer service issues:
1. Visit support.dell.com
.
2. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom of the page.
3. Click Contact Us on the left side of the page.
4. Select the appropriate service or support link based on your need.
5. Choose the method of contacting Dell that is convenient for you.
Setting Up Your Monitor
Dell™ U2312HM Flat Panel Monitor
If you have a Dell™ desktop or a Dell™ portable computer with internet access
1. Go to http://support.dell.com, 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 1920 x 1080 again.
NOTE: If you are unable to set the resolution to 1920 x 1080, please contact Dell™ to inquire about a Graphics
Adapter that supports these resolutions.
Setting Up Your Monitor
Dell™ U2312HM Flat Panel Monitor
If you have a non Dell™ desktop, portable computer, or graphics card
In Windows XP:
1. Right-click on the desktop and click Properties .
2. Select the Settings tab.
3. Select Advanced .
4. Identify your graphics controller supplier from the description at the top of the window (e.g. NVIDIA, ATI, Intel etc.).
5. Refer to the graphic card provider website for updated driver (for example, http://www.ATI.com OR http://www.NVIDIA.com ).
6. After installing the drivers for your Graphics Adapter, attempt to set the resolution to 1920 x 1080 again.
In Windows Vista
® or Windows
®
7:
1. Right-click on the desktop and click Personalization .
2. Click Change Display Settings .
3. Click Advanced Settings .
4. Identify your graphics controller supplier from the description at the top of the window (e.g. NVIDIA, ATI, Intel etc.).
5. Refer to the graphic card provider website for updated driver (for example, http://www.ATI.com OR http://www.NVIDIA.com ).
6. After installing the drivers for your Graphics Adapter, attempt to set the resolution to 1920 x 1080 again.
NOTE: If you are unable to set the resolution to 1920 x 1080, please contact the manufacturer of your computer or
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