epiphan video Pearl Nano, Руководство пользователя

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Pearl Nano User Guide About video output ports
Pearl Nano also has an HDMI video pass through port that outputs the HDMI IN signal with no added
latency. The HDMI PASS-THROUGH port is not user configurable and does not modify the input video
signal that is passed through.
Using the video output port takes CPU cycles and adds to the overall load on your Pearl Nano.
For optimum performance, keep displays disconnected from the video output port if you're
not using them. Setups that already put a heavy load on the system's CPU may be negatively
impacted if the external video output port is used.
You can use the Admin panel to configure the video output port parameters. If you're simply selecting a
video source or channel and enabling/disabling audio for the output port, you can use your choice of
either the Admin panel or the front screen menu. For channels that have audio, the audio is enabled by
default.
Important considerations
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When changing encoding parameters for a channel that's displayed on the video output port, it
may revert to the display's default resolution if the output resolution is set to "Same as source". To
resolve this, change the video output to a different resolution then back to "Same as source".
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When using the video output port for confidence monitoring, some delay can be expected. For a
1080p video source, the average delay on the video output port is approximately 100 ms. For a
1080p channel, the average delay on the video output port is approximately 300 ms. The actual
amount can vary, depending on the setup.
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If an SDI or HDMI video input source that is selected to display at the HDMI output port also
appears in a custom layout for a channel, then the channel's encoding settings are used at the
HDMI output. Changing the channel's frame rate will change the frame rate used at the output port
for that video input.
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Using the video output ports adds to the overall system load on Pearl Nano. If your system has a
high system load and you're using the video outputs, monitor the frame rate of your channels on
Pearl Nano and adjust your setup if there's an unacceptable drop in the frame rate. Remedial
measures you can take include eliminating video scaling at the inputs and adjusting the encoding
bitrates.
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Use MultiViewer to preivew multiple sources on the video output port in a grid for confidence
monitoring with minimal impact to system loading.
Related links
Set up the video output port using the Admin panel
Set up and enable MultiViewer
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