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Resolves HDMI video loss / stability issues -
replicates a full 1080p, 3D EDID out-of-the-box
What is Doctor HDMI?
Doctor HDMI helps remove or reduce switching delays or loss of video when a TV
or projector is turned on/off or when receiver or switcher input is
Need a long run? Doctor HDMI can also act as an HDMI signal booster allowing longer HDMI cable runs.
Have a display that doesn't support FullHD 1080p? Doctor HDMI can limit the source output resolution.
Doctor HDMI solves these issues by acting as an EDID manager and HDMI/DVI-D emulator/repeater that comes
with pre-defined presets, user programmable banks, EDID
sniffing and more. It fixes HDMI incompatibilities and faulty EDID
handshakes by keeping a source device
"always on" by it by feeding back a constant (user programmable) EDID signal.
What is EDID? What EDID problems exist?
EDID stands for Extended Display Identification Data
and it's a piece of information that is transmitted by a display or "sink" (such
as a TV, a projector, or a monitor) to describe its audio and video capabilities
to an AV "source" such as a Cable Box, PS3, or Disc Player. The EDID contains
the video resolutions and audio setups supported for the sink device.
switching between multiple sources, a significant delay can occur before the
video re-appears as the source and sink devices try to "sync up" on the EDID. In
some cases, the video may not even come back unless the source is reset,
causing huge headaches for AV integrators and installers. In other cases,
specific combinations of TV & receiver devices will create invalid EDIDs,
resulting is no picture at all.
Doctor HDMI solves all these problems by:
- Minimize the lag time for the video signal to return
- Help eliminate "loss of video"
- For source devices with invalid EDIDs, a "corrected" EDID can be
injected midstream to allow normal AV operation
- Connect the output device (receiver, display, HDMI switch, etc.) to the OUTPUT
of Doctor HDMI.
- Connect the source to the INPUT of Doctor HDMI.
- Press the up/down buttons on the Doctor HDMI to choose which EDID to use,
or to learn a new EDID.
If using multiple sources and having issues (such as slow switching), you'd need
to connect one Doctor HDMI between each source and the display or receiver
in order to preserve the EDID that is being transmitted by the source, and to
present this same EDID to the sink (the receiver), constantly. (You can also
totally remove and inject a "new" EDID if the source device's original EDID is
The 8 light on the front of the unit show which of the 8 settings is in use:
1. FullHD 1080p with 3D (HDMI 1.4 with 5.1 audio)*
2. FULLHD 1080p without 3D (HDMI 1.3 with 5.1 audio)
3. Limits the video resolution to 1080i, no 3D
4. Limts the video resolution to 720p, no 3D
5. Limits the video resolution to 480/576p, no 3D
6. Custom solution (initially the same as #1 but can be custom programmed with
7. Custom solution (initially the same as #1 but can be custom programmed with
8. Learn/use a custom EDID
*Setting 1 is used by default. This will be
compatible and suitable for most modern installations.
IMPORTANT: In order to ensure proper EDID emulation, Doctor HDMI should be the
first item that your source device is connected to.
How to learning a custom EDID
Learning a custom EDID should only be required when 7.1 surround sound is
needed, or in special cases. In most instances the default EDID settings should
- Connect the HDMI output device (receiver, display, etc.) to the OUTPUT
connector of the
Doctor HDMI and the blue power LED comes on.
- Press the UP button,
until the #8 LED is on.
- Press the "Learn EDID" button at the center of the Doctor HDMI.
The blue HPD LED will blink once. The new EDID has been learnt.
- Connect the HDMI video
source to the INPUT connector of Doctor HDMI.
- The new EDID is now being used.
Custom EDIDs may also be programmed directly from a PC.
Is Doctor HDMI HDCP Compliant?
Yes. Doctor HDMI is fully HDCP Compliant.
Does Doctor HDMI strip or change HDCP in any way?
No. HDCP is not stripped or altered in any way.
What does the HEAC/ARC switch do?
The switch enables/disables pin 14 on the HDMI connection to fix HEAC/ARC
compatibility issues that exist on some devices. Leave it at the
"ARC" setting unless you experience difficulties.
- HDMI 1.4a compliance
- 8 EDID banks (5 pre-defined, 2 user programable, 1 copy from Sink
- Reset HPD-event on the fly !
- Up to 50 meters (164 feet) cable loss compensation
- Keep source’s HDMI/DVI-D output active
- USB upgradable and flashable from computer
- User programmable EDID Banks
- Sink EDID sniffing feature
- Extand signal integrity up to 50 meters (164 feet)
- HDMI Pin14 on/off siwtch to fix HEAC/ARC compatibility issue
- Any resolution including HDMI standards
- Video Bandwidth : 2.25 Gbps
- Video support: Single-link 225Mhz, 2k, WUXGA, 1080p60/12bit deep color
- Audio support: Dolby True HD & DTS Master Audio
- Input cable equalization
- Support extended EDID CEA861, 256 byte
- HDCP Pass-Through
- Lip Sync Pass-Through
- CEC Protocol Pass-Through
- Power : Universal USB power adaptor
- Compliance: HDCP/FCC/CE
- Warranty : 1 year (extendable)
- Dimensions : 60mm W x 40mm D x 20mm H
- Net weight : 50 grams
- Input/Output connector: HDMI female
- USB: Mini USB-B female connector
- Dr. HDMI Converter
- 6' USB to mini USB cable
"I use a Lumagen to connect to my JVC projector and to connect to the various
inputs: Oppo, Tivo, computer, and Verizon units. The first Lumagen HDMI output
goes through a Darbee unit en route to projector. The Receiver gets a second
Lumagen HDMI output. I have noticed a difficulty in acquiring a steady HDMI
signal from time to time, and it can take a bit of time to settle down, bouncing
both the video and audio. I added Doctor HDMI and now video and audio lock on
right away, with no glitches." - Carl P.
"As a EDID emulator the Dr HDMI worked flawlessly with my gaming PC. My main
desktop PC has its video output split between a monitor and a AV receiver and TV
setup. Of course, this resulted in the EDID being incorrectly detected and the
PC refusing to output surround sound to the receiver. Using the Dr HDMI, it was
trivial to capture the EDID from the AV receiver, then by connecting the Dr HDMI
to the PC, the PC was convinced it was permanently connected to the surround
sound system and selecting 7.1 surround sound was no longer a problem." -
"It totally worked! This is a great product ; it does the job and doesn’t
heat at all and doesn’t need an extra power supply! I’m really satisfied." -
"I realize that Dr. HDMI can be used to emulate the EDID for SimulView to
work with PS3 SimulView games (thanks, it works great!)." - Subversive
"Thought I’d close off this thread by saying the Dr. HDMI fixed the problem
100%, just as promised. I selected option 2 and the ATV3 now outputs 1080p/60.
Then, once I had put black tape over the extra bright blue LEDs on the Dr. HDMI,
everything was perfect ! Great device, thanks." - MikeMcr
"I have recieved dr.hdmi today. Works perfect, now dolby and dts with tv in
the chain." - Tony71
"The DR.HDMI has helped considerably in stabilizing the audio/video drop outs
going to my monitor and I have a number of pieces connected in between all of
this" - Deus02
our official Doctor HDMI forum thread
Confused? Let the CurtPalme.com home theater
experts help you choose the right solution for you.
Email us at: firstname.lastname@example.org