4. UBEX Concept
UBEX series – Matrix Application Mode – User's Manual
47
4. UBEX Concept
UBEX series – Matrix Application Mode – User's Manual
47
MA
TRIX APPLIC
A
TION MODE
Applied F-series endpoint firmware package: v1.4.1 | Applied R-series endpoint firmware package: v1.4.1 | Applied MMU firmware package: v1.2.1 | LDC software: v1.34.0b2
4.3.6. Timing Modes
Technical Background
UBEX receivers and transceivers provide two different timing modes on the HDMI outputs:
▪
Free run
: the receiver generates nominal clock frequency which is not bonded to the source. It means
TBC (time base correction) is applied in the stream which may cause frame repetition/drop between
minimum 1 and maximum 2 frames value. The seamless stream switching is available in this mode
only.
▪
Source locked
: time stamps are transmitted with the stream from the source and the receiver can
generate accurate clock frequency; in this way the latency within one frame (up to 16 lines) can be
guaranteed. This mode is ideal for the video walls where the extra low latency is the most important
requirement.
The setting is available in the LDC software (see the details in the
section) and by LW3
protocol commands (see the details in the
section).
Application of Timing Mode Settings - Example
The Concept
The stream of the PC is selected on all four outputs of the UBEX receivers. The playing of the stream is at
the Frame #4 at this moment.
The HDMI output ports of the upper UBEX receiver are set to
source locked
so the video stream is generated
in the receiver which does not engage any delay compared to the original stream.
The HDMI output ports of the lower UBEX receiver are set to
free run
. The differences between the actual
content of the connected monitors might be noticeable.
