Lightware MX2-8x8-HDMI20-L User Manual page 36

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6. Software Control – Lightware Device Controller
Link datarate
The DisplayPort 1.2 standard uses fix data rates on the high-speed
lanes. With this setting, it is possible to limit the maximum data rate.
Please note that the source can use lower data rate if the quality of
the cable is low.
▪ Max RBR: Reduced Bit Rate uses 1.62 Gbps bandwidth per lane
Max. HBR: High Bit Rate (HBR) uses 2.70 Gbps
▪
Max. HBR2: HBR2 is the fastest mode with a data rate of
▪
5.40 Gbps per lane
INFO: RBR and HBR are defined in the DisplayPort 1.0-1.1a
standards, while HBR2 was introduced in DisplayPort 1.2.
Link lane count
DisplayPort cables have four high-speed lanes, each of them are
capable of transmitting data at a rate of 5.40 Gbps.
The following parameters can be set:
▪ Max. 1 lane: Transmits data at a rate of 5.40 Gbps.
▪ Max. 2 lane: Transmits data at a rate of 10.80 Gbps.
▪ Max. 4 lane: Transmits data at a rate of 21.60 Gbps.
The source and the sink agree on the link lane count during the link
training process. Fewer link lanes result in lower power consumption
at the transmitter side. With this setting, it is possible to limit the
number of link lanes used.
INFO: Please note that the source can still use fewer lanes if there
is no need for high data rates.
Total available link bandwidth
Displays the maximum available bandwidth.
The total available link bandwidth is the actual
by the Link lane count. If the bandwidth of the video stream is higher
than the total available link bandwidth, then it is not possible to
transmit the video stream over the link.
Conversion mode
The following settings are available:
▪ Passthrough: the video signal is transmitted to the output without
any changing.
▪ RGB 4:4:4 to YCbCr 4:2:2 12 bit: the video converter subsamples
the 4:4:4 signal to 4:2:2.
▪ RGB 4:4:4 to YCbCr 4:2:0 8 bit: the video converter subsamples the
4:4:4 signal to 4:2:0.
INFO: When the DisplayPort source sends RGB 4:4:4 10-bit HDR
signal, then it will be converted to 8-bit HDMI signal, because of the
HDMI 2.0 bandwidth limit. To enable YCbCr 4:2:2 conversion will save
the bandwidth by chroma subsampling and preserve the color depth.
Below the Displayport Link section, the summary of the DP-related
settings and status information of the selected port can be seen.
The audio setting possibilities are the same with the HDMI port's. For
more details see
Link datarate multiplied
MX2-HDMI20 series – User's Manual
Status information of the active signal
Status information of the disconnected port
General Tab - Audio Settings section.
Video status
The signal format and the detected parameters are described in these
sections.
Video status information in the input port properties window
The following signal status information are displayed in this section:
▪ Signal present
▪ Signal bandwidth
▪ Resolution
▪ Color depth
INFO: Take care the deep color support of the emulated EDID in case
of 10-bit or 12-bit color depth video signal. For more information
about it, see DisplayPort Video Options.
▪ Color space
▪
Frame Detector
Embedded audio
Presence of the embedded audio and the sampling frequency are
displayed in Embedded audio section.
CEC Tab
The DisplayPort CEC-capability is similar with the HDMI, so more
details about the CEC command sending, see the
Advanced Tab
See more details about the advanced signal information in
Tab section.
36
CEC Tab section.
Advanced