Brompton TESSERA M2, User Manual, Page: 67 / 296

TESSERA - V3.0 | USER M ANUAL - REV B | 7.4 - LOW LATENCY M ODE
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7.4 - LOW LATENCY MODE
Low Latency Mode reduces the overall latency by one fram e.
Tessera T1 and M2 LED Processor s work at a latency of 3 fram es. In Low Latency Mode, the
latency is reduced to 2 fram es. Tessera S4 LED Processors are always in Low Latency Mode, and
non-standard canvas sizes autom atically switch the Tessera M2 and T1 LED Processors into Low
Latency Mode.
N OTE When using several processors with different end to end latencies to run the sam e
wall, video delay needs to be m odified. See Com bining Processors on page 46 for
m ore inform ation.
Working in this m ode, the following features are disabled:
l
Scaling (upscaling and downscaling). As a result, the active area m odifications are disabled
l
Deinterlace
l
Fram e-rate conversion, forcing the processor to lock to the source fram erate
Colour functions, such as contrast, brightness and RGB gain rem ain unaffected. The input
source is set at its default resolution and sync frequency and is positioned 1:1 in the top left
corner of the canvas.
The Tessera SX40 and SX40 LED Processor s do not have a Low Latency Mode, keeping all its
features available at 2 fram es latency end to end. To decrease their latency to 1 fram e they can
use Ultra Low Latency, though this has its own trade-offs. See Ultra Low Latency on page 222 for
m ore inform ation
N OTE Latency, or video delay, is defined as the tim e between the last cycle of a source
fram e appearing on the processor's input, and the first cycle that an LED on a fixture
is lit with that fram e.