DVI-D TO VGA CONVERTER
1 Introduction
This DVI to VGA Converter is mainly designed to connect DVI-KVM Extenders local outputs to traditional VGA KVM-Switches. Additionally they may be used to convert DVI signals of a graphic card, to be displayed on a VGA monitor – especially on older, expensive beamers etc. Depending on a strange behavior of some display drivers, it cannot be guaranteed, that it will work (on first attempt, without modifications) on each graphic card. For further information on this, please contact ‘Technical Support’.
2 Quick Setup
This section briefly describes how to install your DVI to VGA Converter. Unless you are an experienced user, we recommend that you follow the full procedures described in the rest of this manual..
Install system
1.Connect VGA monitor cable to Converter.
2.Connect DVI-D graphic source to Converter.
3.Connect p.s.u. to Converter.
4.Power up the system.
3 Installation
For first-time users, we recommend that you carry out a test placement, confined to a single room, before commencing full installation. This will allow you to identify and solve any cabling problems, and experiment with the DVI to VGA Converter more conveniently.
3.1Package Contents
You should receive the following items in your converter package:
•DVI-D to VGA Converter unit
•1x 5V DC universal power supply for the DVI-D to VGA Converter
•This manual
•CPU cable (1.8m) DVI-D video (DVI-D single link male) connector – DVI-D video (DVI-D single link male) connector
3.2System Setup
To install your DVI to VGA Converter:
1.Switch off all devices.
2.Connect the monitor to the Converter unit
3.Using the supplied CPU cable, connect the converter to your DVI-D graphic source.
4.Connect the 5V power supply to power the unit.
Only use the power supply originally supplied with this equipment or a manufacturer-approved replacement.
5.Power up the system.
3.3Interconnection Cable Requirements
To connect the Converter unit you will need:
•DVI-D:Please ensure, that you use high quality DVI-D cables, to attach the system to your CPU. The length of the cable should not expire 1.8m (6ft). The device should also work with longer cables . however this can never be guaranteed. To our experiences, lengths above of 5m normally fail.
•VGA: Please ensure, that you use high quality VGA cables, to attach the monitor to your Converter. The length of the cable should not expire 1.8m (6ft). The device should also work with longer cables . however this can never be guaranteed. To our experiences, lengths above of 20m normally fail.
DVI-D TO VGA CONVERTER
4 Device view
Connect to
DVI-D graphic source
DVI to VGA Converter – DVI side view
| Connect to 5V Power | | | |
| | | VGA-Monitor port– |
| supply | | |
| | | connect to VGA monitor |
| | | |
| | | | |
| | | | |
DVI to VGA Converter – VGA side view
5 Supported Resolutions
The Converter can handle all known DVI resolutions up to 1920x1080. Nevertheless, there is only a selection of most common resolutions stored in the DDC (EDID) table. If the converter does not show any picture on the VGA output, it may depend on a missing resolution in the table or a mal programmed driver, which is not able, to use any other than the preferred resolution. In this case, please contact Technical Support, to program a user defined DDC-table.
Detailed Timings : | |
1.) (preferred) | 1024x768 at 60Hz | fh = 48kHz, fd = 65MHz |
2.) | 1600x1200 at 60Hz | fh = 75kHz, fd = 162MHz |
Standard timings supported : | |
640x480/60Hz | | 640x480/67Hz |
640x480/72Hz | | 640x480/75Hz |
720x400/70Hz | | 720x400/88Hz |
800x600/56Hz | | 800x600/60Hz |
800x600/72Hz | | 800x600/75Hz |
832x624/75Hz | | 1024x768/60Hz |
1024x768/60Hz | | 1024x768/70Hz |
1024x768/75Hz | | 1152x870/75Hz |
1280x720/60Hz | | 1280x960/60Hz |
1280x1024/60Hz | 1280x1024/75Hz |
1360x765/60Hz | | 1400x1050/60Hz |
1600x900/60Hz | | 1600x1200/60Hz |
1680x1050/60Hz | 1920x1080/60Hz |
Timing characteristics : | |
VESA GTF support | Not supported |
Horizontal scan range | 22-95kHz |
Vertical scan range | 48-90Hz |
Video bandwidth | 170MHz |
DVI-D TO VGA CONVERTER
6 Troubleshooting
There isn’t a picture.
•Check the power supply.
•Your DVI Source provides a 1920x1200 resolution. VGA cannot display the 1920x1200 resolution, because this has a timing with no black shoulders. VGA monitors cannot detect the synchronization signals, if there is no black shoulder.
•The DVI2VGA Converter has a built-in, virtual ‘Digital DDC’ to show the graphic source, that a DVI monitor is attached. As there is no possibility, to translate ‘analogue DDC’ from the attached VGA monitor, this virtual DDC simulates the presence of a DVI monitor.
Some mal programmed drivers have strange reactions to this DDC information: Some do only display the preferred (native) resolution. Others do, if you have 1600x1200 for preferred resolution, not display 1920x1080 because 1920 is bigger than 1600. On the other hand, if you have 1920x1080 for maximum resolution, it will not display 1600x1200 because 1200 is bigger than 1080.
Under some circumstances, it is helpful, to deselect ‚Hide modes that this monitor cannot display’ in … ‘Graphic Properties’ – ‘Settings’ – ‘Advanced’ – ‘Monitor’
Deselect ‚Hide modes that this monitor cannot display’
If this does not help, please contact ‚Technical Support’ for a user adapted DDC table.