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AT-OME-ST31A
11
Notes on Scaling
Installation
1. The HDMI
OUTPUT
port supports up to 4K @ 60 Hz, 12-bit, with HDR.
2. If the source is 4K, and the HDMI
OUTPUT
port is connected to a 1080p (not 4K-capable) display, then the
output will be down-scaled as follows:
Input
Output
4K @ 24 Hz
1080p @ 24 Hz
4K @ 30 Hz
1080p @ 30 Hz
4K @ 60 Hz, 4:2:0
1080p @ 60 Hz, YUV/RGB 4:4:4
3.
HDR / Dolby Vision / HLG formats cannot be down-scaled to 1080p.
4.
The internal scaler will be bypassed if the connected display supports the resolution and timing information from
the source device.
5.
The HDBaseT
OUTPUT
port supports up to 4K @ 60 Hz. However, HDR is only supported at lower resolutions.
6. The HDBaseT
OUTPUT
port will down-sample to 4:2:0, if the source is 4K @ 60 Hz, 4:4:4, 8-bit. However, the
HDMI
OUTPUT
will remain at 4K @ 60 Hz, 4:4:4, 8-bit, if the output is connected to a 4K-capable display.
The following section provides important information about how the AT-OME-ST31A processes 4K (UHD) video
signals.