TV One 1T-DVI-VGA User manual

Instruction Manual
1T-DVI-VGA
DVI to VGA Scaler

Table of Contents
1.0 Introduction 2
2.0 Specifications 4
3.0 Checking Package Contents 5
4.0 Connecting the Hardware 5
5.0 Operating The Unit 6
6.0 Troubleshooting 8
7.0 Limited Warranty 8
8.0 Regulatory Compliance 9
9.0 Contact Information 10

2
1.0 INTRODUCTION
Thanks for purchasing this DVI to VGA Scaler from TV One. The 1T-DVI-VGA is
designed to convert DVI signals to analog . Our professional video conversion products
have been serving the industry for over twenty years. TV One offers a full line of high
quality Seamless Switchers, Video Scalers, Up/Down/Cross Converters, Analog-Digital
Converters (SD/HD-SDI, HDMI, DVI), Format Converters, Standards Converters,
TBC/Frame Synchronizers, Matrix Routing Switchers, Signal Distribution Amplifiers and
Cat.5 Transmission Systems.
1.1 Liability Statement
Every effort has been made to ensure that this product is free of errors. TV One cannot
be held liable for the use of this hardware or any direct or indirect consequential
damages arising from its use. It is the responsibility of the user of the hardware to check
that it is suitable for his/her requirements and that it is installed correctly. All rights
reserved. No parts of this manual may be reproduced or transmitted by any form or
means electronic or mechanical, including photocopying, recording or by any
information storage or retrieval system without the written consent of the publisher.
TV One reserves the right to revise any of its hardware and software following its policy
to modify and/or improve its products where necessary or desirable. This statement
does not affect the legal rights of the user in any way.
All third party trademarks and copyrights are recognised. The TV One logo, TV One-
task and CORIO are the registered Trademarks of TV One. All other trademarks are the
property of their respective holders.
1.2 Features
The 1T-DVI-VGA Video Scaler has many features that enable it to perform in a superior
manner. Among those features you will find:
Converts DVI Inputs to RGB Outputs
The input may be DVI or HDTV signals in RGBHV, YPbPr or YUV
The output may be Analog RGBHV, plus YPbPr for some resolutions
Automatic Detection of Input Resolution
Output Picture Adjustments
1.3 Getting the Best Results
There are many factors affecting the quality of results when scaling video signals. Some
basic precautions will ensure the best possible performance.

3
Using Native Resolution – It is always best to set the output resolution of the scaler to
the native resolution and refresh rate of the display device. This allows our scaler to do
most of the work, which usually results in a superior picture.
Distance between the Video Scaler and the display device – This plays a major role
in the final result. Long distances are possible, but special measures should be taken in
order to avoid cable losses. These include using high quality VGA cables and Premium
DVI Cables. Line amplifiers may also be necessary.
Output connection cables – Low quality cables are susceptible to interference. They
degrade signal quality due to poor matching and cause elevated noise levels.
Therefore, cables should be of the best quality. Coax-type computer cables are
recommended because of their superior shielding characteristics.
Interference from nearby electrical devices – These can have an adverse effect on
signal quality. For example, an older computer monitor often emits very high
electromagnetic fields that can interfere with the performance of video equipment in its
proximity.
2.0 SPECIFICATIONS
Connectors
Input DVI-I
Output HD-15 Female
Picture Controls
Input Signal Clock Frequency, Phase
Output Signal Brightness, Contrast, RGB Levels,
Color, Horiz & Vert Position
Mechanical
(H-W-D) 30x133x76mm (1.2"x5.25"x3")
Weight (Net) 280 g (0.62 lbs)
Warranty
Limited Warranty 3 Years Parts and Labor
Environmental
Operating Temperature 0° to +50° C (+32° to +122° F)
Operating Humidity 10% to 90%, Non-condensing
Storage Temperature -10° to +60° C (+14° to 122°F)
Storage Humidity 10% to 90%, Non-condensing
Power Requirement
External Power Supply 5VDC@2A – Locking DC
Regulatory Approvals
Amplifier Units FCC, CE, RoHS
Power Supplies UL, CUL, CE, PSE, GS, RoHS
Accessories Included
1x Power Adapter US, UK or Euro
1x Operations Manual

4
2.1 Supported Input Formats and Resolutions
The 1T-DVI-VGA accepts a wide variety of input resolutions and formats as detailed in
the following table:
2.2 Supported Output Formats and Resolutions
The 1T-DVI-VGA outputs a wide variety of input resolutions and formats as detailed in
the following table:
Note 1 - The 1080i Output is actually a doubled 540p signal. It will appear as 1080i on most
displays, however, it is not a true 1080i signal format.
Resolutions Vert Rate Format Scan Type
VGA
SVGA
XGA
MAC
WXGA
SXGA
640x480
800x600
1024x768
1152X864
1280x768
1280x1024
60,72,75,85 Hz
60,72,75,85 Hz
60,70,75,85 Hz
70,75 Hz
60 Hz
60Hz
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
Progressive
Progressive
Progressive
Progressive
Progressive
Progressive
480i
480p
576p
720p
1080i
852x480
720x480
720x576
1280x720
1920x1080
60Hz
60Hz
50Hz
50,60Hz
50,60Hz
YUV
YPbPr, RGBHV
YPbPr, RGBHV
YPbPr, RGBHV
YPbPr, RGBHV
Interlaced
Progressive
Progressive
Progressive
Interlaced
Resolutions Vert Rate Format Scan Type
VGA
VESA85
VGA70
SVGA
XGA
MAC
WXGA
1280A
SXGA
640x480
640X480
720X400
800x600
1024x768
1152X864
1280x768
1280X960
1280x1024
60,72,75,85 Hz
85 Hz
70 Hz
60,72,75,85 Hz
60,70,75,85 Hz
70,75 Hz
60 Hz
60 Hz
60,75 Hz
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
RGBHV
Progressive
Progressive
Progressive
Progressive
Progressive
Progressive
Progressive
Progressive
Progressive
480p
576p
720p
1080i
(Note 1)
720x480
720x576
1280x720
1920x1080
60Hz
50Hz
50,60Hz
50,60Hz
YPbPr, RGBHV
YPbPr, RGBHV
YPbPr, RGBHV
YPbPr, RGBHV
Progressive
Progressive
Progressive
Pseudo
Interlaced

5
3.0 CHECKING PACKAGE CONTENTS
Before attempting to use this unit, please check the packaging and make certain the
following items are contained in the shipping carton:
1x 1T-DVI-VGA Scaler
1x 100-240VAC AC/DC Power Adapter
1x User Manual
Note: Please retain the original packing material should the need ever arise to return the
unit. If you find any items are missing, contact your reseller or TV One immediately.
Have the Model Number, Serial Number and Invoice available for reference when you
call.
4.0 CONNECTING THE HARDWARE
The first step is to connect a video source to the input of the Scaler and to connect its
output to a display device. Below you’ll find drawings of the unit showing the locations
of the input, output and power connectors.
4.1 Connecting the Input
The 1T-DVI-VGA can accept both PC and HDTV inputs in the DVI format. The 1T-DVI-
VGA will automatically detect the mode and resolution of the PC/HDTV input.
4.2 Connecting the Output
The 1T-DVI-VGA Video Scaler can output a wide variety of Analog RGBHV resolutions.
Use a high quality cable to connect the scaler to a display device.
Note: Proper signal levels are very important to the operation of this product so make
sure your inputs are of the levels specified on page 5. If improper operation of the unit
occurs and the unit has power, the most likely cause of the problem is high or low signal
levels, use of a low quality cable or the use of a wrong input cable.

6
4.3 Connecting Power to the Unit
The Video Scaler is shipped with an In-Plug Power Adapter to convert 100~240VAC
@50-60Hz to 5VDC. Connect the DC Output Cord from the Power Adapter to the back
of the unit and then plug the Power Adapter into an AC Receptacle. When the unit’s
front panel Power Switch is turned On, the Power LED indicator will illuminate.
5.0 OPERATING THE UNIT
The Scaler is controlled via three buttons with status indicated by On Screen Display.
Menu Button: This Button displays the Menu Options via the On Screen Display
on the display device connected to the output.
+ and - Buttons: These Buttons allow navigation within the Menu and
adjustments of the parameters available.
XGA Reset: Simultaneously depressing the – and + buttons returns settings to
factory defaults and sets the output to XGA@60 Hz.
Pressing the Menu Button results brings up the Initial or
Main Menu. Move the cursor to the desired setup
option by using the + and – buttons. Press the Menu
Button again to call up that option. Once the desired
option is reached and selected, a new Menu will appear
and you once again use the + & - Keys to select the
parameter you wish to change or adjust.
5.1 OSD Menus
If you select the first item on the main menu, Input Set up, a secondary menu will show
the following items:
5.1.1 Input set up - When it is selected, a simple, two-selection sub menu will appear.
This menu allows you to manually select the type of input you are feeding to the scaler.
You can select either YPbPr or RGB as the input type. Selecting the wrong type of input
will cause unpredictable results on the output. Pressing the + or - buttons to select the
input type, press menu to save your selection, press + and – as required to navigate to
the Exit word and, once there, press Menu again to exit this menu.
5.1.2 Output set up -When Output Set Up is selected, a new sub-menu appears.
This OSD choice will give you a display showing all the possible output resolutions and
formats. Use the + and – buttons to navigate to your choice, pres the menu key to save
your choice then use the + and – buttons again to navigate to the exit command and
press the menu button to exit the OSD display.
Input Set up
Output Set up
Picture Adjust
HV Adjust
OSD Adjust
System Information
Auto Adjust
Exit

7
5.1.3 Output Modes
Per the Table in Section 2.2.
5.1.4 Output Adjustments When in DVI-D Mode:
Picture Adjust - When the Picture Adjust Menu is selected, the following adjust
parameters will appear on the OSD:
Contrast 070
Bright 130
Color 070
Reset
Exit
Use the + and – buttons to choose the desired parameter, press Menu to select and
then use + or – to increase or decrease the value. Press Menu to save the value. When
finished with all adjustments, use the + and – buttons to move to Exit and then press
Menu to actually exit the routine.
5.1.5 Menu Ranges and Defaults
The adjustment range and factory preset value as follows:
Value Range Default
Contrast
Bright
Color
0~255
0~255
0~255
047
102
064
Note: Select reset to reset all adjustment back to the factory preset value.
HV adjust- When selected, the following sub-menu appears.
H-position 184
V-position 32
Use the + and – buttons to adjust the best horizontal and vertical position of the
picture.

8
OSD adjust- When this mode is selected, you can adjust the Horizontal and Vertical
position of the OSD menu.
System information- When selected, this shows the input/output resolutions and their
vertical refresh rate on the screen.
Auto adjust- When selected, the T1-DVI-VGA will automatically adjust all the
parameters to the factory presets.
Exit- Select to exit from the current menu page.
Notes:
The default output resolution of the 1T-DVI-VGA is XGA@60 Hz.
The unit has non-volatile memory and memorizes all setting before power off and
recalls those setting on next power on however changing output resolution
erases all settings.
At any time, pressing + and - buttons simultaneously will reset the output
resolution to XGA@60Hz, and other settings back to factory default values.
6.0 TROUBLESHOOTING
Other than checking for faulty cables, the only common problem would be choosing a
wrong Output Setting. Make sure the display is capable of handling the resolution and
refresh rate selected and make sure the output format selected (RGB or YPbPr) for the
type of cable being used at the output.
After trying the above suggestions should the problem still persist, contact your dealer
for additional suggestions before contacting TV One. Should the dealer’s technical
personnel be unable to assist you, contact TV One via our support website:
http://tvone.crmdesk.com. Create a technical support request on the site and our
support team will respond within a short period of time.
7.0 LIMITED WARRANTY
TV One warrants the original purchaser that the equipment it manufactures or sells will
be free from defects in materials and workmanship for a fixed term from the date of
purchase. The warranty term for specific product lines is defined below.
1. TV One branded products based on TV One’s CORIO technology are warranted for
a period of five years from the date of purchase. This includes products with the
model number prefix of C2, 1T-C2, CX, A2 or S2.
2. TV One-task branded products, other than those based on TV One’s CORIO
technology mentioned above, are warranted for a period of three years from the date