Asus LS248H User manual

LS248 Series
LED Monitor
User Guide

ii
Contents
Notices......................................................................................................... iii
Safety information ...................................................................................... iv
Care & Cleaning........................................................................................... v
Chapter 1: Product introduction
1.1 Welcome! .................................................................................... 1-1
1.2 Package contents......................................................................... 1-1
1.3 Monitor introduction .................................................................... 1-2
1.3.1 Front view ....................................................................... 1-2
1.3.2 Back view........................................................................ 1-3
Chapter 2: Setup
2.1 Assembling the monitor base..................................................... 2-1
2.2 Adjusting the monitor.................................................................. 2-1
2.3 Connecting the cables................................................................. 2-2
2.4 Turning on the monitor................................................................ 2-2
2.5 Turning on Light-In-Motion ......................................................... 2-3
Chapter 3: General instructions
3.1 OSD (On-Screen Display) menu ................................................ 3-1
3.1.1 How to reconfigure.......................................................... 3-1
3.1.2 OSD function introduction ............................................... 3-1
3.2 Specicationssummary(LS248H) ............................................. 3-4
3.3 Troubleshooting (FAQ)................................................................ 3-5
3.4 Supported operating modes ....................................................... 3-6

iii
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received including interference that
may cause undesired operation.
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with manufacturer’s
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is
required to assure compliance with FCC regulations. Changes or modifications
to this unit not expressly approved by the party responsible for compliance
could void the user’s authority to operate this equipment.
As an Energy Star® Partner, our company has determined that this product meets
the Energy Star® guidelines for energy efficiency.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the
Canadian Department of Communications.
This class B digital apparatus complies with Canadian ICES-003.

iv
Safety information
• Before setting up the monitor, carefully read all the documentation that came
with the package.
• To prevent fire or shock hazard, never expose the monitor to rain or moisture.
• Never try to open the monitor cabinet. The dangerous high voltages inside the
monitor may result in serious physical injury.
• If the power supply is broken, do not try to fix it by yourself. Contact a qualified
service technician or your retailer.
• Before using the product, make sure all cables are correctly connected and the
power cables are not damaged. If you detect any damage, contact your dealer
immediately.
• Slots and openings on the back or top of the cabinet are provided for
ventilation. Do not block these slots. Never place this product near or over a
radiator or heat source unless proper ventilation is provided.
• The monitor should be operated only from the type of power source indicated
on the label. If you are not sure of the type of power supply to your home,
consult your dealer or local power company.
• Use the appropriate power plug which complies with your local power
standard.
• Do not overload power strips and extention cords. Overloading can result in
fire or electric shock.
• Avoid dust, humidity, and temperature extremes. Do not place the monitor in
any area where it may become wet. Place the monitor on a stable surface.
• Unplug the unit during a lightning storm or if it will not be used for a long period
of time. This will protect the monitor from damage due to power surges.
• Never push objects or spill liquid of any kind into the slots on the monitor
cabinet.
• To ensure satisfactory operation, use the monitor only with UL listed
computers which have appropriate configured receptacles marked between
100-240V AC.
• If you encounter technical problems with the monitor, contact a qualified
service technician or your retailer.
This symbol of the crossed out wheeled bin indicates that the product (electrical,
electronic equipment, and mercury-containing button cell battery) should not
be placed in municipal waste. Please check local regulations for disposal of
electronic products.

v
Care & Cleaning
• Before you lift or reposition your monitor, it is better to disconnect the cables
and power cord. Follow the correct lifting techniques when positioning the
monitor. When lifting or carrying the monitor, grasp the edges of the monitor.
Do not lift the display by the stand or the cord.
• Cleaning. Turn your monitor off and unplug the power cord. Clean the monitor
surface with a lint-free, non-abrasive cloth. Stubborn stains may be removed
with a cloth dampened with mild cleaner.
• Avoid using a cleaner containing alcohol or acetone. Use a cleaner intended
for use with the monitor. Never spray cleaner directly on the screen, as it may
drip inside the monitor and cause an electric shock.
The following symptoms are normal with the monitor:
• The screen may flicker during the initial use due to the nature of the fluorescent
light. Turn off the Power Switch and turn it on again to make sure that the
flicker disappears.
• You may find slightly uneven brightness on the screen depending on the
desktop pattern you use.
• When the same image is displayed for hours, an afterimage of the previous
screen may remain after switching the image. The screen will recover slowly or
you can turn off the Power Switch for hours.
• When the screen becomes black or flashes, or cannot work anymore, contact
your dealer or service center to fix it. Do not repair the screen by yourself!
Conventions used in this guide
WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when
trying to complete a task.
IMPORTANT: Information that you MUST follow to complete a task.
NOTE: Tips and additional information to aid in completing a task.

vi
Wheretondmoreinformation
Refer to the following sources for additional information and for product and
software updates.
1. ASUS websites
The ASUS websites worldwide provide updated information on ASUS
hardware and software products. Refer to http://www.asus.com
2. Optional documentation
Your product package may include optional documentation that may have
been added by your dealer. These documents are not part of the standard
package.

1-1ASUS LS248 Series LED Monitor
1.1 Welcome!
Thank you for purchasing the ASUS®LS248 Series LED monitor!
The latest widescreen LED monitor from ASUS provides a crisper, broader, and
brighter display, plus a host of features that enhance your viewing experience.
With these features, you can enjoy the convenience and delightful visual
experience that the LS248 Series brings to you!
1.2 Package contents
Check your package for the following items:
LED monitor
Quick start guide
User guide CD
Warranty card
Power cord + power adapter
VGA cable
HDMI-DVI cable
Cleaning cloth
If any of the above items is damaged or missing, contact your retailer
immediately.

1-2 Chapter 1: Product introduction
1.3 Monitor introduction
1.3.1 Front view
1. button:
Selects a desired preset mode.
Exits the OSD menu or goes back to the previous menu when the OSD
menu is active.
Automatically adjusts the image to its optimized position, clock, and phase
by touching this button for 2-4 seconds (for VGA mode only).
2.
Decreases values or moves your selection left/up.
Contrast hotkey
3. MENU button:
Turns on the OSD menu. Enacts the selected OSD menu item.
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1-3ASUS LS248 Series LED Monitor
4. Power button/power indicator
Turns the monitor on/off.
The color definition of the power indicator is as the below table.
Status Description
White ON
Amber Standby mode
OFF OFF
5. button:
Selects an available input source.
6.
Increases values or moves your selection right/down.
Brightness hotkey
1.3.2 Back view
HDMI VGA
FORHDMI
DC-IN
VGA
HDMI
FOR HDMI
5
Rear connectors
1. DC-IN port. This port connects the power cord.
2. HDMIport. This port is for connection with an HDMI compatible device.
3. VGA port. This 15-pin port is for PC VGA connection.
4. Earphone jack. This port is only available when an HDMI cable is connected.This port is only available when an HDMI cable is connected.
5. Kensington lock slot.
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1-4 Chapter 1: Product introduction

2-1ASUS LS248 Series LED Monitor
2.1 Assembling the monitor base
To assemble the monitor base:
1. Have the front of the monitor face down on a table.
2. Place the ring-shaped base on the back of the monitor by aligning the slots on
the base with the pins on the monitor.
3. Use a coin or the like to turn the screw until the ring-shaped base is securely
attached to the monitor.
We recommend that you cover the table surface with soft cloth to prevent
damage to the monitor.
2.2 Adjusting the monitor
For optimal viewing, we recommend that you look at the full face of the
monitor, then adjust the monitor to the angle that is most comfortable for you.
To adjust your viewing angle, gently push the top portion of the monitor or bring
the monitor forwards as illustrated.
Youcanadjustthemonitor’sanglefrom10˚to25˚.
+10
。
to +25
。
It is normal that the monitor slightly shakes while you adjust the the viewing
angle.
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2 Chapter 2: Setup
2.3 Connecting the cables
1. Connect the cables as the following instructions:
HDMI VGA
FORHDMI
DC-IN
VGA
HDMI
FOR HDMI
To connect the power cord:
Connect the power adapter securely to the monitor’s DC input port.
Connect one end of the power cord to the power adapter and the other
end to a power outlet.
ToconnecttheVGA/HDMI-DVIcable:
Plug one end of the VGA/HDMI-DVI cable to the monitor’s VGA/HDMI
port.
Connect the other end of the VGA/HDMI-DVI cable to your computer's
VGA/DVI port.
Tighten the two screws to secure the VGA/DVI connector.
Tousetheearphone(onlywhenanHDMIcable,notthesuppliedHDMI-
DVIcable,isconnected): connect the end with plug type to the monitor’s
earphone jack.
When these cables are connected, you can choose the desired signal from the
Input Select item in the OSD menu.
2.4 Turning on the monitor
Tap the power button . See page 1-2 for the location of the power button. The
power indicator lights up in white to show that the monitor is ON.
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3ASUS LS248 Series LED Monitor
2.5 Turning on Light-In-Motion
1. Tap MENU and turn the control wheel to select System Setup.
2. Tap MENU again and turn the control wheel to select Light-In-Motion.
3. Tap MENU again and turn the control wheel to select On.
4. Tap repeatedly until the OSD menu disappears to save and exit the
OSD.

4 Chapter 2: Setup

3-1ASUS LS248 Series LED Monitor
3.1 OSD (On-Screen Display) menu
3.1.1 Howtorecongure
Tap the MENU button to activate the OSD
menu.
1.
Turn the control wheel to navigate through the functions. Highlight the
desired function and tap the MENU button to activate it. If the function
selected has a sub-menu, turn the control wheel again to navigate through
the sub-menu functions. Highlight the desired sub-menu function and tap the
MENU button to activate it.
Turn the control wheel to change the settings of the selected function.
To exit and save the OSD menu, tap the button repeatedly until the
OSD menu disappears. To adjust other functions, repeat steps 1-3.
3.1.2 OSD function introduction
Splendid
This function contains five sub-functions
you can select for your preference. Each
mode has the Reset selection, allowing
you to maintain your setting or return to the
preset mode.
1.
Scenery Mode: best choice for scenery photo display with SPLENDID™
Video Enhancement.
Standard Mode: best choice for document editing with SPLENDID™
Video Enhancement.
Theater Mode: best choice for movies with SPLENDID™ Video
Enhancement.
Game Mode: best choice for games playing with SPLENDID™ Video
Enhancement.
Night View Mode: best choice for dark-scene games or movies with
SPLENDID™ Video Enhancement.
In the Standard Mode, the Saturation and Sharpness functions are not
user-configurable.
In the other modes, the sRGB function is not user-configurable.
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3-2 Chapter 3: General Instruction
2. Image
You can adjust brightness, contrast,
sharpness, saturation, position (VGA only),
and focus (VGA only) from this menu.
Brightness: the adjusting range is from 0 to 100. To have a quick access
to the adjustment menu, turn the control wheel clockwise.
Contrast: the adjusting range is from 0 to 100. To have a quick access to
the adjustment menu, turn the control wheel counterclockwise.
ASCR: turns on/off the ASCR (ASUS Smart Control Ratio) function.
Sharpness: the adjusting range is from 0 to 100.
Saturation: the adjusting range is from 0 to 100.
Position: adjusts the horizontal position (H-Position) and the vertical
position (V-Position) of the image. The adjusting range is from 0 to 100.
Focus: reduces Horizonal-line noise and Vertical-line noise of the image
by adjusting (Phase) and (Clock) separately. The adjusting range is from
0 to 100.
Phase adjusts the phase of the pixel clock signal. With a wrong phase
adjustment, the screen shows horizontal disturbances.
Clock (pixel frequency) controls the number of pixels scanned by one
horizontal sweep. If the frequency is not correct, the screen shows vertical
stripes and the image is not proportional.
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3. Color
Select the image color you like from this
function.
Color Temp.: contains five color modes including Cool, Normal, Warm,
sRGB, and User.
Skin Tone: contains three color modes including Reddish, Natural, and
Yellowish.
In the User mode, colors of R (Red), G (Green), and B (Blue) are user-
configurable; the adjusting range is from 0-100.
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3-3ASUS LS248 Series LED Monitor
4. Input Select
In this function, you can select your
desired input source.
5. System Setup
Allows you to adjust the system.
Splendid Demo Mode: turns on/off ASUS Splendid Demo function.
Light-In-Motion: Selecting “On” enables the lighting effect emitting
around the control wheel.
Volume: the adjusting range is from 0 to 100.
Aspect Control: adjusts the aspect ratio to full or 4:3.
OSD Setup:
Adjusts the horizontal position (H-Position)/the vertical position
(V-Position) of the OSD from 0 to 100.
Adjusts the OSD timeout from 10 to 120 seconds.
Enables or disables the DDC/CI function.
Language: there are 11 languages for your selection, including English,
German, Italian, French, Dutch, Spanish, Russian, Traditional Chinese,
Simplified Chinese, Japanese and Korean.
Information: shows the monitor information.
All Reset: “Yes” allows you to restore the default settings.
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3-4 Chapter 3: General Instruction
3.2 Specicationssummary(LS248H)
Panel Type TFT LCD
Panel size 23.6" (59.9 cm, 16:9) wide screen
Max. Resolution 1920 x 1080
Pixel pitch 0.2715 mm
Brightness (Max.) 300 cd/m2
Contrast Ratio (Typ.) 1000:1
Contrast Ratio (Max.) 10000000:1 (with ASCR on)
Viewingangle(H/V)CR>10 170˚/160˚
Display colors 16.7 M
Response time 2 ms
SPLENDID™ Video
Enhancement
Yes
SPLENDID™ selection 5 video preset modes (by hotkey)
Auto adjustment Yes (by hotkey)
Color temperature selection 5 color temperatures
Skin-Tone selection 3 skin-tones
Digital input HDMI v1.3
Analog input D-Sub
Earphone jack Yes (Only for HDMI)
Colors Black
Power LED White (On)/ Amber (Standby)
Tilt +10˚~+25˚
Kensington lock Yes
AC/DC adaptor input
voltage
AC: 100~240V
For use only with power supply via
Asus ADP-40PH ABA
Power consumption Power On: < 30 W, Standby: < 1 W, Power Off: < 1 W
Temperature (Operating) 0˚C~40˚C
Temperature
(Non-operating)
-20˚C~+60˚C
Dimension(WxHxD) 585 mm x 225 mm x 420.3 mm (machine)
685 mm x 150 mm x 506 mm (package)
Weight (Esti.) 5.6 kg (Net); 8.2 kg (Gross)
Multi-languages 11 languages (English, German, Italian, French, Dutch,
Spanish, Russian, Traditional Chinese, Simplified
Chinese, Japanese, Korean)
Accessories VGA cable, HDMI-DVI cable, Power cord, Power adapter,
User guide CD, Quick start guide, Warranty card,
Cleaning cloth
Regulation approvals Energy Star®, CB, CE, Gost-R, CCC, UL/cUL, FCC,
C-Tick, BSMI, VCCI, RoHS, WEEE, J-MOSS, PSB, PSE,
Windows Vista, Windows 7 WHQL
*Specicationsaresubjecttochangewithoutnotice.

3-5ASUS LS248 Series LED Monitor
3.3 Troubleshooting (FAQ)
Problem Possible Solution
Power LED is not ON Tap the button to check if the monitor is
in the ON mode.
Check if the power cord is properly
connected to the monitor and the power
outlet.
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The power LED lights amber and there is
no screen image
Check if the monitor and the computer are
in the ON mode.
Make sure the signal cable is properly
connected the monitor and the computer.
Inspect the signal cable and make sure
none of the pins are bent.
Connect the computer with another
available monitor to check if the computer
is properly working.
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Screen image is too light or dark Adjust the Contrast and Brightness
settings via OSD.
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Screen image is not centered or sized
properly
Touch the button for 2-4 seconds
to automatically adjust the image (for VGA
mode only).
Adjust the H-Position or V-Position
settings via OSD.
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Screen image bounces or a wave pattern is
present in the image
Make sure the signal cable is properly
connected to the monitor and the
computer.
Move electrical devices that may cause
electrical interference.
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Screen image has color defects (white does
not look white)
Inspect the signal cable and make sure
that none of the pins are bent.
Perform All Reset via OSD.
Adjust the R/G/B color settings or select
the Color Temperature via OSD.
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Screen image is blurry or fuzzy Touch the button for 2-4 seconds
to automatically adjust the image (for VGA
mode only).
Adjust the Phase and Clock settings via
OSD.
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No sound or sound is low Ensure that the HDMI cable is properly
connected to the monitor and the
computer.
Adjust the volume settings of both your
monitor and HDMI device.
Ensure that the computer sound card
driver is properly installed and activated.
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3-6 Chapter 3: General Instruction
3.4 Supported operating modes
Resolution
Frequency
Horizontal
Frequency(KHz)
Vertical Frequency
(Hz)
Pixel
(MHz)
720 x 400 31.47 70.08 28.32
640 x 480 31.47 59.94 25.18
640 x 480 35.00 66.66 30.24
640 x 480 37.87 72.82 31.50
640 x 480 37.50 75.00 31.50
800 x 600 35.16 56.25 36.00
800 x 600 37.88 60.32 40.00
800 x 600 48.08 72.12 50.00
800 x 600 46.86 75.00 49.50
832 x 624 49.72 74.55 57.28
1024 x 768 48.36 60.00 65.00
1024 x 768 56.476 70.069 75.00
1024 x 768 60.02 75.00 78.75
1152 x 864 67.50 75.00 108.00
1280 x 960 60.00 60.00 108.00
1280 x 1024 63.98 60.02 108.00
1280 x 1024 79.98 75.02 135.00
1366 x 768 47.712 59.79 85.50
1440 x 900 55.94 59.89 106.50
1600 x 1200 75.00 60.00 162.00
1680 x 1050 65.29 60.00 146.25
1920 x 1080 67.50 60.00 148.50
*Modesnotlistedinthetablemaynotbesupported.Foroptimalresolution,werecommendthat
you choose a mode listed in the table above.
*ThismonitorsupportsfullHD(480p,576p,720p,1080i/p)videocontentfromgameconsoles,DVD
playersandotherconsumervideodevicesviaHDMI.