HELIOS LED Processing Platform - USER GUIDE 47
Processor ULL OFF Processor ULL ON
Tile ULL
OFF
Tile ULL
ON
Ultra Low Latency (Advanced) - (continued)
Below are test results of Ultra Low Latency (ULL) with each mode off and then on. Using the SDI output of an ImagePro-II*
connected to the HELIOS system, the yellow line measures a phototransistor reading the tile's light output. The green line
measures, the HD-15 (VGA) output of the same ImagePro connected directly to the scope.
Yellow - ImagePRO-II 720p50 -SDI → HELIOS → Tile → Scope (photo transistor)
Green - ImagePRO-II -HD15→ Scope
Figure 61: Ultra Low Latency oscilloscope readings
Top left image - Both (HELIOS and tiles) ULL toggled OFF. Three (3) frames delay.
Top right image - Only the HELIOS ULL function ON. Two (2) frames of delay.
Bottom left image - HELIOS ULL OFF and tile ULL ON. Two (2) frames of delay.
Bottom right image - Both (HELIOS and tiles) ULL toggled ON. One (1) frame of delay.
* The ImagePro-II is a registered trademark of Barco.
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