DDC EDID emulator for VGA signals


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Adder DDC-GHOST Diagram - DDC EDID emulator for VGA


The Adder DDC-GHOST has been developed to allow you to extend the life of your existing systems by adding full EDID data to your VGA signals.

The Adder DDC-GHOST is the most cost effective way to extend the life of your existing infrastructure. EDID data is a very important part of video extension and distribution, it allows the display drivers of the devices you attach (graphics cards for example) to match perfectly with the screen. The DDC (Display Data Channel) carries information about the physical characteristics of the screen, such as resolution or colour depth, back to the display adapter (graphics gard) to ensure the resulting picture is correct, every time.

What is DDC EDID?
DDC EDID is the data that describes the characteristics of the display device (monitor) to the display adapter (graphics card). This data is what enables plug and play connection with monitors. Characteristics included in the EDID data include: supported resolutions, manufacturer, phosphor/filter type, display size, luninance data and in the case of digital panels - pixel mapping.

The DDC EDID is stored in the monitor, and requested by the graphics card. When you put a device in between the two, you need to ensure the DDC EDID is still passed through. In cases where the DDC EDID is not passed, DDC Ghost sits inline and provides the data directly to the graphics card. Essentially, the monitor is no longer asked for DDC EDID.

DDC-GHOST Highlights

  • Adder DDC-Ghost - Ensure Perfect Match Between Source & Display

    Ensure Perfect Match Between Source & Display

    Unless an extender actively supports DDC, some high performance video cards cannot be used at high resolutions. The DDC Ghost supports dual page DDC ensuring compatible resolutions are supported.

  • Adder DDC-Ghost Full DDC / EDID Cloning

    Full DDC / EDID Cloning

    The DDC Ghost will clone a full dual page EDID (Extended Display Identification Data). This makes the DDC Ghost compatible with the latest ranges of display devices. The first page is the standard EDID data, and the second covers the extended data block.
  • Adder DDC-Ghost VGA Interface Powered

    VGA Interface Powered

    The DDC Ghost takes its power directly from VGA pin 9. This reduces clutter, and makes installation as simple as possible. In situations where no pin 9 power is available, DDC Ghost can be powered directly via the optional 5V power supply.

  • Adder DDC-Ghost uses Standard EDID Data

    Standard EDID Data

    Adder's expertise with DDC EDID data has allowed them to put together an extended profile which is designed to cover most display devices. As such, the DDC Ghost may be used in connections where no data is otherwise available. You can choose whether to use this data or the original screen EDID attached.

    Supported Resolutions

  • Adder DDC-Ghost - Push and Go Setup

    Push and Go Setup

    The DDC Ghost interface is secure and simple. Setting up the device is a single button process directed by the in built LED indicator. This makes changing display devices a fast and simple process.

DDC-GHOST Package Contents

Adder DDC-GHOST Package Contents

  • (1) DDC-Ghost module
  • (1) 6ft VGA video cable (15 pin D-type male-to-male)

What you may additionally need

  • Adder PSU-IEC-5VDC: Mains to 5VDC power adapter (if power cannot be obtained from the controlling computer via the VGA video cable)
  • Adder VSC18: Additional 6ft VGA video cable (15 pin D-type male-to-male)

DDC-GHOST Resources

Adder DDC-GHOST Diagram - DDC EDID emulator for VGA DDC-GHOST User Guide (PDF)
Adder DDC/EDID White Paper (PDF)

 EDID Management Banner

Adder DDC-GHOST Specifications

Height 21 mm./.83 in.
Width 68 mm./2.67 in.
Depth36 mm./1.42 in.
Weight56 g./.12 lb.
Operating Temperature0°C to 40°C / 32°F to 104°F
Inline Power5V
External Supply (optional)5V
StandardsCE, FCC
Question: Hi, I Have one question about DDC. I have one device that its company have claim this device use secure DDC. And how I check it and trust.
Answer: Thank you for your inquiry,

You could theoretically call the Adder DDC-Ghost secure because the device doesn't cache/store the signal passing through, but this is a bit of a stretch as the DDC-Ghost has not been certified secure by NIAP, Common Criteria, or another secure certification body.

For any further clarification on certified secure vs. a device that does not buffer, please feel free to check out our Secure KVM Guide or to contact your KVM Switches Online sales representative.