epiphan Pearl-2 Rackmount, Руководство пользователя

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Pearl-2 User Guide Video output port resolution
Using the video output port takes CPU cycles and adds to the overall load on your Pearl-2. 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 change the video output port defaults and send any video source or channel to the port using the
Admin panel or Epiphan Live. Audio is included for channels that have audio.
To set and configure the video output port settings using the Admin panel, see Preview the video output port .
To set and configure video output port settings using Epiphan Live, see Monitor and setup the output port
source and audio .
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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When the output port settings are changed, or when an external monitor is connected or disconnected
from the port, the displayed output flashes once.
Video output port resolution
The video output port's resolution (also known as frame size or display mode) defines the number of pixels
displayed horizontally and vertically. For example, the resolution 1920×1080 (1080p) produces an image that
is 1920 pixels wide by 1080 pixels tall.
Pearl-2 always assumes that the output display uses square pixels.
The aspect ratio (eg. 4:3 or 16:9) describes the proportional relationship between the video output's pixel
width and height. The resolution 1920×1080 (1080p), for example, is quite a bit wider than it is tall. The ratio
of its width to height is 16 to 9, which has an aspect ratio that is 16:9.
By default, you can choose from the following output resolutions for your video output ports, but you can
also change settings to allow a variety of other resolutions through.
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