Blackmagicdesign HDLink Optical Fiber, Руководство по эксплуатации

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Troubleshooting
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Troubleshooting
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3. Try the EDID Manual Override settings
If you have verified that your display specifications are nominally adequate for the video formats with which
you work, then the next step is to try the EDID Manual Override settings in HDLink and HDLink 2.
Every DVI-D display should include an EDID chip which provides information about the attributes of
the display and which video formats it should support. HDLink interrogates the EDID chip and uses this
information to present video on the display. If the EDID information is not present or is invalid, then HDLink
cannot automatically display video correctly.
In this situation, connect the HDLink via USB to your Mac or PC and launch the HDLink Utility. Go to the
HDLink menu and select Preferences.
Enable the EDID Manual Override option. From the pulldown menu, try the different options until you find
one that works with your display.
If the video format is interlaced, you should only select an Interlaced Display option.
If the video format is progressive, you should only select a Progressive Display option.
An override mode outputs video at a different frequency to the incoming video signal. For example, if you
were to use the Force 5:2 Interlaced Display on PAL (25 Hz) video, you would need to multiply the video
input frequency by the force factor to calculate the video output frequency, i.e. [25 Hz x (5 ÷ 2)] = 62.5 Hz.
Therefore the HDLink would output 62.5 Hz. In the case of some displays which do not work with PAL video
rates, forcing the HDLink output to 62.5 Hz will often allow PAL video to be viewed on the display.
Please note that if you are using more than one video format, e.g. 1080i50 and 1080i59.94, your monitor
might require that you use different EDID override modes for the different video formats.
The EDID Manual Override settings are not available for use with newer models of HDLink as this process
has been automated and so is no longer required.
HD720p50 support
HDLink and HDLink 2 both support the HD720p50 standard. However there are very few DVI-D monitors
which support this standard. Most new HDMI-based monitors and TVs purchased in PAL countries now
include 720p50 support and should work well with HDLink.
The EDID Manual Override settings can be accessed by
going to the HDLink Utility menu and choosing Preferences.
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