
© 2013 Lumagen, Inc. Radiance Tech Tip 19, Rev 1.02
4. Save the new factory default settings by pressing "Menu, Save, Ok, Ok, Ok"..
5. You can download the latest manual and technical tips from the Lumagen website.
http://www.lumagen.com/testindex.php?module=manuals
Output settings
The Radiance output is set, by default, so that it will produce an image on all digital displays that
have a VI or a H MI input. There are two settings that you can change, if you have a display
with a H MI input.
1. We recommend that you change the output of the Radiance from “RGB” to “YCbCr 422”.
Press “Menu, Output, Styles, stylex, H MI Format, Type, Ok, YcbCr 422, Ok”. Save the
new setting by pressing “Menu, Save, Ok, Ok, Ok”.
2. Most displays can display video signals that are an even 24.0Hz, 30.0Hz, and 60.0Hz
instead of the normal 24.97Hz, 29.97Hz, and 59.96Hz.
You can change the Radiance “Ratematch” setting to “On” which allows the Radiance to
match the rate of the input to the output for an occasional video that might have an
even rate. Press “Menu, Output,
Use the right HDMI cables
H MI cables continue to be the source of many problems, such as a snowy image due to the loss
of the H CP connection to the display.
Short H MI cables that are 1 meter (3 feet) long can cause problems. Most H MI transmitter
chips have a built in equalizer circuit that boosts the signal level to compensate for losses in the
cable. A cable that is too short, can deliver a signal that is too strong, and overwhelm the input
of the H MI receiver chip. If you have short H MI cables and are experiencing intermittent
problems, a longer cable can make a more reliable connection. It’s a good practice to use good
quality generic H MI cables that are a minimum length of 2 meters (6 foot) long.
For H MI cables that are 12 meter (40 foot) to 30 meters (100 foot) a Lumagen VidExt (Video
Extender) might be required to clean up the signal going to the display. The Lumagen VidExt
buffers all the signals, including the control signals, to provide a better signal to the display.
There is also a rotary switch to set the optimum cable equalization length. Most other H MI
cable extenders lack this useful feature.
For instillations than require a video cable up to 60 meter (200 feet), a Lumagen CatExt (CAT6
Extender) can be used to transmit the H MI signal. The Lumagen CatExt uses two Cat6 wires to
transmit a H MI signal up to 60 meter (200 feet).
Note: It is a good idea to install two spare Cat5 or Cat6 cables when you install a H MI cable
to a projector. This gives you an alternate method of providing video, to the projector, if the
H MI cable doesn’t provide a good signal.
HDMI to D I Adapters