AT-OMNI-121 / AT-OMNI-122
35
Basic Operation
Fast Switching
This feature is a software implementation which vastly improves the HDMI authentication process, resulting in ultra-
fast switching between video streams.
1.
Login to AMS. Refer to Refer to
Accessing Decoders in AMS (page 19)
if necessary.
2.
Click
HDMI OUTPUT
in the menu bar.
3.
Scroll down to the
Fast Switching Enable
toggle switch. By default, this feature is disabled and the toggle
switch will be gray. Click the toggle switch to enable fast switching. When enabled, the toggle switch will be
green.
The following table provides maximum timing, color space, and bit-depth specifications when fast switching is
enabled.
Number of Channels
Resolution
Refresh Rate
Color Space
Bit Depth
1
1920 x 1080p
60 Hz
4:4:4
12-bit
2
1920 x 1080p
30 Hz
4:4:4
12-bit
Input Resolution (from Encoder) Output Resolution (AT-OMNI-121)
Output Resolution (AT-OMNI-122)
1280 x 720p
1280 x 720p
1280 x 720p
1920 x 1080p @ 60 Hz
1920 x 1080p @ 60 Hz
1920 x 1080p @ 30 Hz
> 1920 x 1080p (up to UHD)
1920 x 1080p @ 60 Hz
1920 x 1080p @ 30 Hz
NOTE:
When fast-switching is enabled, the output resolution at the decoder endpoint is dependent
on both the number of channels on the decoder and the input resolution received from the encoder.
Refer to the table below for details.
IMPORTANT
: If Fast Switching is enabled, latency increases from 0.5 frames to 1.5 frames.
When using Fast Switching mode, the output resolution will be 1920x1080p, regardless of the source
resolution. Also note that 1080i is not supported in Fast Switching mode.