Terra User Manual
92
020-102838-10 Rev. 1 (05-2020)
Copyright
©
2020 Christie Digital Systems USA Inc. All rights reserved.
Switching Modes
The following switching modes are available based on the Terra configuration:
•
Genlock
•
Genlock Scaling
•
Fast Switch
•
Multiviewer
•
Genlock Wall
•
Fast Switch Wall
Genlock Mode
The primary benefit of Genlock mode is unaltered resolution (no scaling) and the lowest latency
delivery.
This mode is referred to as Genlock mode because the display is genlocked to the source. The mode
acts as a cable extension, native data transmission).
This mode is the lowest latency solution available in Terra. When in Genlock mode, the RX outputs the
HDMI video and audio in the exact same format as received by the TX connected to the source.
Used for the lowest (0) frame latency between the source and the display.
This mode requires the same frame rate for the source (Transmitter) and the output display
(Receiver). When there is a mismatch in frame rate, the Transmitter frame rate will be applied to the
Receiver, potentially causing issues with the display device.
•
Source must be progressive.
•
RX output is always RGB 8 bit, regardless of the source being 8, 10, or 12 bits.
•
Since the display is synchronized with the source and when switching to another source, the
display disconnects. It then reconnects and resynchronizes to the new source. The exact time
it takes to handshake is display-dependent.
•
Bezel correction values are set independently for top, bottom, left, and right side but it
assumes the same correction for each display forming the matrix. Thus, all displays must be
the same and properly aligned without any physical gaps between displays. Refer
Genlock Scaling Mode
The primary benefit of Genlock Scaling mode is the additional scaling feature. Genlock scaling mode
includes the low latency benefits of Genlock mode; additionally, it enables the RX scaler to scale the
video to different resolution. For example, the source can be 4K resolution while the RX output can be
1080P. However, it does not offer frame conversion; and as with the Genlock mode, the display needs
to disconnect, reconnect, and resynchronize to the new source.
Fast Switch Mode
The primary benefit of Fast Switch mode is fast switching between sources.
•
Provides the added benefit of frame conversion over Genlock scaling.
•
Fast switching always maintains constant timing and format, the display never needs to resync
or handshake, thus switching is fast and seamless.
•
Fast Switch Mode is the default presentation mode in Terra.
•
The source must be progressive.
•
RX output is always RGB 8 bit, regardless of the source being 8, 10, or 12 bits.
Multiviewer Mode
Multiviewer mode is used for multi-windowing for preview and confidence monitoring applications.
