BrightSign 16GB SDHC Class 4 SDHC-16C4-1 Manual Do Utilizador

Technical Notes – BrightSign SDHC Cards 
 

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MLC and TLC 
BrightSign SDHC cards use a type of NAND flash technology that is less susceptible to 
read errors than many other card brands. Many SD card manufacturers use “triple-level” 
(TLC) flash chips, which are more vulnerable to read issues than the “multi-level” (MLC) 
flash chips that BrightSign SDHC cards use. MLC flash chips provide faster write 
performance and greater reliability. 

Most (if not all) SD cards currently on the market have sufficient read speed for digital 
sign and kiosk applications that use standard definition video, which in general requires 
cards that can sustain read rates of above 3 megabytes per second. However, high-
definition videos (720p and 1080p) require a read rate of at least 4 megabytes per 
second, and this requirement is doubled if you want to use the 

 to 

play two HD videos at once. Underperforming cards can cause a variety of playback 
problems, including distorted and pixelated video or audio dropouts. 
 
BrightSign offers both Class 4 and Class 10 SDHC cards with different storage 
capacities. The class of an SDHC card is equal to its maximum read rate in megabytes 
per second: We recommend BrightSign Class 4 or Class 10 SDHC cards for use on the 

 of players and BrightSign Class 10 SDHC cards for use on the XD Series of 

players. 

If you have any questions about using SD/SDHC cards with BrightSign players, please 

contact 

. If you are interested in purchasing BrightSign SDHC 

cards, please visit our 

.