Computer Tech Link Computer Monitor 21dn User Manual

USERS GUIDE  
COLOR MONITOR  
Model No : 21d n  
C T L  
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INTRODUCTION  
CONTENTS  
Introduction ............................................................................. 1  
This manual explains how to correctly install, operate and get the  
best performance from your monitor. Please read this user’s  
guide carefully before installing your monitor, then keep it near  
your monitor for quick reference.  
Product Features ................................................................. 2  
Setup ......................................................................................... 3  
Connecting the D-sub Signal Cable .................................... 3  
Connecting the BNC Signal Cable ..................................... 4  
Connecting the Power Cord ................................................ 5  
Power Management System ............................................... 5  
DDC for Plug & Play ......................................................... 5  
Operation & Adjustment ...................................................... 6  
Specifications ......................................................................... 12  
Factory Preset Timings ......................................................... 12  
Troubleshooting ..................................................................... 13  
Description for D-sub Connector ........................................ 14  
First, please check that the contents of the box corresponds with  
the following checklist :  
Color monitor  
Power cord  
Signal cable  
User’s Guide  
Warranty Handbook  
Registration Card  
If any item is missing or damaged, please contact your dealer.  
Please keep the box and packing materials so that you may  
properly store or transport your monitor.  
1
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SETUP  
PRODUCT FEATURES  
CONNECTING THE D-SUB SIGNAL CABLE  
The convenient and user-friendly on-screen display allows for  
easy and accurate adjustments of horizontal and vertical  
screen size and position, geometry and screen color.  
1. Turn off the computer and monitor.  
2. Connect the 15 pin D-sub connector to the output port of the  
video card in your computer and monitor.  
The monitor supports a safe working environment in strict  
compliance with the MPR II standard for low emissions  
(TCO optional).  
3. Tighten the screws of connector.  
The monitor complies with the VESA Display Data Channel  
(DDC) specification for Plug and Play compatibility.  
Advanced microcircuitry makes setup and configuration fast  
and effortless.  
The monitor features Advanced Color Controls for fine-tuning  
to meet your own personal tastes or application requirements.  
Use the on-screen controls to adjust the color temperature,  
RGB gain value for the best possible screen color and  
intensity.  
Press the menu button and activate the Self-Diagnosis menu to  
determine whether your monitor is functioning normally, not  
receiving a signal or is receiving a signal that is out of  
scanning range.  
Activate the higher refresh rates of the monitor to stabilize the  
screen and eliminate the annoying flicker that contributes to  
eye-strain and headaches.  
The “borderless” full-screen display capability works under all  
graphic modes and provides a larger viewing area than  
conventional monitors, giving you a better picture with more  
workspace.  
D-sub signal cable  
2
3
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CONNECTING THE BNC SIGNAL CABLE  
CONNECTING THE POWER CORD  
1. Plug the power cord into the AC receptacle located at the back  
of the monitor.  
1. Turn off the computer and monitor.  
2. Connect the 5 BNC connectors from the signal cable to the  
monitor.  
2. Plug the other end of the power cord into the AC outlet.  
3. Push in and turn the connectors clockwise until they are  
locked in place.  
If your power cord is PC-to-Monitor type, plug the other end  
of the power cord into the AC receptacle in the computer.  
POWER MANAGEMENT SYSTEM  
If you use the monitor with a computer that complies with the  
power-saving program, you can set the monitor to go blank when  
the system has remained unused for a period of time. To specify  
the period or to disable this feature, set the system timeout field  
of the computer’s system setup program or use special software  
for power-saving. See the computer user’s manual for the details  
of using the system setup. While the monitor is in power-saving  
mode (blank screen), it consumes less power than when it is in its  
normal state. The color of the power LED will indicate the state.  
To restore the screen image, press any key of your keyboard or  
move your mouse. If the signal cable is connected loosely or  
disconnected, the power-saving feature will not operate.  
R
G
B
HS/HVS VS  
DISPLAY DATA CHANNEL FOR PLUG AND PLAY  
BNC signal cable  
(Optional Accessory)  
If you use the monitor with a computer that complies with  
DDC1/2B/CI of VESA, the host video card automatically  
configures itself without your intervention in a way that best fits  
the attached monitor. The Display Data Channel(DDC) allows  
the monitor to inform the host system about configuration  
information for optimum use of the monitor. Use of the video  
card utility is not required to match the resolutions and refresh  
rates of the monitor and video card.  
4
5
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OPERATION & ADJUSTMENT  
Key Pro cess  
Co n t ro l Pa n el  
ENGL SH  
DEUTSCH  
ESPAÑOL  
FRAN A S  
C
TAL ANO  
Move cursor to the right window on the OSD  
window.  
Increase the value of any selected function.  
Move cursor to the left window on the OSD  
window.  
Decrease the value of any selected function.  
Launch OSD(On-Screen Display) MENU window.  
MENU  
Move cursor to the high window on the OSD  
window.  
Start  
Increase the value of V.size or V.center.  
Move cursor to the low window on the OSD  
window.  
Decrease the value of V.size or V.center.  
Ho t Key  
BRIGHTNESS  
CONTRAST  
When you choose the icon  
OSD screen.  
on the OSD window, you can exit the  
6
7
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OSD Fu n ct io n s  
ICON  
CONTROL  
FUNCTION  
ICON  
CONTROL  
H. MOIRE  
FUNCTION  
Adjust the horizontal picture moire  
cancellation.  
LANGUAGE  
Select language for OSD (5 languages).  
Adjust the position of the display  
horizontally(left or right) and vertically  
(up or down).  
H. CENTER &  
V. CENTER  
Adjust the vertical picture moire  
cancellation.  
V. MOIRE  
Choose different preset color  
temperatures or set your own customized  
color parameters.  
FOCUS  
Adjust the focus image.  
COLOR TEMP  
H.CONVERGENCE  
V.CONVERGENCE  
Adjust the horizontal convergence image.  
Adjust the vertical convergence image.  
RED GAIN  
GREEN GAIN  
BLUE GAIN  
RED BIAS  
Adjust the red gain.  
Adjust the green gain.  
Adjust the display width & height at the  
same time.  
Adjust the blue gain.  
Adjust the red bias.  
Adjust the green bias.  
Adjust the blue bias.  
ZOOM  
Adjust the left and right margins for more  
convex or more concave margins.  
PINCUSHION  
TRAPEZOID  
PIN BALANCE  
GREEN BIAS  
BLUE BIAS  
Adjust the trapezoid of the screen by  
moving the lines inward or outward.  
Adjust the side balance when the sides of  
the screen are bowed towards left or right.  
H. SIZE &  
V. SIZE  
Adjust the width (horizontal size) and the  
height (vertical size) of the display.  
Adjust the parallelogram when the screen  
is leaning left or right.  
PARALLELOGRAM  
PIN S CONTROL  
Adjust the horizontal linearity.  
Adjust the vertical linearity.  
H. LINEARITY  
V. LINEARITY  
Adjust the pin S control when the sides of  
the screen are in a S shape.  
8
9
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Self Dia g n o sis  
When the monitor doesn’t display, if you press any key, Self  
Diagnosis screen is displayed. Self Diagnosis function checks if  
the status of the monitor is No Signal or Out of range.  
ICON  
CONTROL  
FUNCTION  
Adjust the pin W control when the sides  
of the screen are in a W shape.  
PIN W CONTROL  
No Signal screen is displayed when the  
D-Sub signal connector is not connected  
or the status of the monitor is on DPMS  
mode.  
Adjust the rotation when the screen is  
tilted left or right.  
ROTATION  
DEGAUSS  
Degaussing keeps the monitor free from  
unwanted magnetism that can result in  
color impurity.  
Out of Range screen is displayed when  
the applied frequency is under or over  
normal range.  
Display horizontal & vertical frequency  
and polarity.  
Normal range  
H : 30 - 107 KHz  
V : 50 - 160 Hz  
STATUS  
YES : VESA DPMS operation.  
NO : NO DPMS operation.  
POWER SAVER  
Display a RGB Color Bar to determine  
whether the screen color is expressed  
normally or not.  
TEST PATTERN  
Select a input signaling type between D-  
sub and BNC connector.  
BNC/D-SUB  
RECALL  
Reset the screen to the Factory Preset  
Display Settings.  
10  
11  
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SPECIFICATIONS  
TROUBLESHOOTING  
CDT Size  
21-inch  
20-inch  
0.25 mm  
Symptom  
Diagonal visible image area  
Dot Pitch  
Check  
No picture.  
Check if power switch and computer power switch  
are in the on position.  
Synchronization  
Horizontal 30 - 107 KHz  
Vertical  
50 - 160 Hz  
Plug and Play  
DDC1/2B/CI  
Check if the signal cable is correctly connected to  
the video card.  
Power Saving  
Power Source  
EPA, VESA DPMS, Nutek Compliant  
100-240 Vac, 50/60Hz (Free Voltage)  
135 W  
Check if the pins of D subconnector are not bent.  
Check if the computer is in the power- saving mode.  
Power Consumption  
Dimension-W x H x D  
(set with stand)  
494 x 500 x 518mm  
POWER LED is not Check if power switch is in the on position.  
lit.  
Weight-unpacked (lbs/Kg)  
Operating Temperature  
61.7/28.0  
10 ~ 40°C /50 ~ 104°F  
Check if the power cord is correctly connected.  
This specification can be changed without any prior notice to improve the  
quality of the product.  
*
Image is unstable.  
Check if the signal cable is suitable to the video card.  
Image is not  
centered, too small  
or too large.  
Adjust H &V Size or H&V Center to get the proper  
image.  
FACTORY PRESET TIMINGS  
Resolution  
Mode  
H.Freq (KHz) V.Freq(Hz)  
Remark  
(dots  
X
lines)  
Picture bounces or a Keep the devices that may cause electrical  
VGA 480  
640  
720  
X
480  
400  
31.5  
31.3  
43.0  
46.9  
53.7  
60.0  
68.7  
80.0  
87.5  
91.1  
93.8  
106.3  
60  
70  
85  
75  
85  
75  
85  
75  
70  
85  
75  
85  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
Non-interlaced  
wave pattern is  
present in the  
picture.  
interference away from the monitor.  
VGA 400  
X
X
X
X
X
X
X
X
X
X
X
VESA 43K  
640  
480  
See the FCC information at the front cover of the  
manual.  
VESA 46K  
800  
600  
VESA SVGA 85  
VESA 60K  
800  
600  
Color looks blotchy. Operate Degauss once.  
1024  
1024  
1280  
1600  
1280  
1600  
1600  
768  
VESA 1024/85  
VESA 1280/75  
VESA 1600/70  
VESA 1280/85  
VESA 1600/75  
VESA 1600/85  
768  
Picture is blurred.  
Adjust Contrast and Brightness.  
1024  
1200  
1024  
1200  
1200  
Operate Degauss once.  
Edges of available  
area on the screen  
are not straight.  
Adjust Geometry Control (Pincushion, Trapezoid..).  
12  
13  
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DESCRIPTION FOR D-SUB CONNECTOR  
Signal  
Pin  
Red  
Green  
1
2
Blue  
3
GND  
4
GND  
5
GND-Red  
6
GND-Green  
GND-Blue  
7
8
+5Vdc  
9
GND-H.Sync  
GND-V.Sync  
Bi-directional Data(SDA)  
Horizontal Sync  
Vertical Sync(VCLK)  
Data Clock(SCL)  
10  
11  
12  
13  
14  
15  
1
6
10  
15  
GND=Ground  
*
14  
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S/N : 9978628318  
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