megapixel HELIOS - System Planning; Planning Overview; Video Input and Bandwidth

HELIOS LED Processing Platform - USER GUIDE 7
2
System Planning
Overview
This chapter covers the activities and considerations that need to be made prior to ordering equipment. If assistance is
needed with any of the items below, Megapixel VR is available to assist. Please contact a sales associate.
Ensure compatibility of the display product being considered with the HELIOS system. The HELIOS system can be used
with a continuously expanding list of products. Please see the HELIOS software release notes available on the Megapixel
VR website for current product compatibility https://megapixelvr.com/support/helios.
Video Input
Pixel dimensions - The number of pixels in the nal display is a major factor in selecting a video input type. If at all
possible it is best to rst settle on a quantity of pixels that need to be driven before selecting an input
format.
Input formats - Select an input format that can support the required pixels. HELIOS accepts three input formats:
• HDMI
• DisplayPort
• SDI
A detailed Input Capability Matrix can be found in Appendix G.
Custom Input Bandwidth Calculations
HDMI and DisplayPort can support custom input resolutions and frame rates, it is important to conrm that the intended
resolution/frame rate will t within the bandwidth limits. Bandwidth limit conrmation is less of a concern when using SDI
since SDI is a controlled standard with xed formats.
The following formula is used make the maximum bandwidth calculation:
(Pixel Width * Pixel Height) * Frame Rate * (Bits/Pixel * 3) = Maximum Bandwidth
As an example, the largest standard aspect ratio DisplayPort signal HELIOS supports is 5K (5120x2880) @60 Hz 8bit. Bits
per pixel is multiplied by 3 since each pixel gets a red, green, and blue signal.
(5120 * 2880) * 60 * (8 * 3) = 21,233,664,000 (21.2G)
NOTE: Extreme cases of very tall and narrow displays may not work due to overhead timing constraints of blanking time.
Input Frequency
Maximum Pixel
Dimensions
Maximum
Bandwidth
HDMI 60Hz 4096 x 2160 14.4G
DisplayPort 60Hs 5120 x 2880 22.6G