What is Refresh Rate?

  Back to glossary

Refresh Rate

Refresh rate is the number of times per second the screen is updated or "repainted." Depending on the video standard, the actual image is changed only 30 times per second for NTSC signal or 25 times per second for PAL. However, most out-of-home LED systems use pulse-width modulation to generate the color levels, and if the image were only "painted" once for every change, there would be a noticeable flicker on the display. A refresh rate of greater than 60 times per second will minimize the flicker. In general, outdoor LED billboard displays should be refreshed at 120 times per second (120 Hz) or greater.

Click here to browse the full billboard terminology glossary

Let us know if you have any questions about any terms, starting an advertising campaign or outdoor advertising. We're happy to help!

Click to chat

The Fliphound Advantage

Pay-as-you-go with no budget minimum, on premium billboards

Upload your ads online and change them whenever

Plan, execute, and monitor outdoor billboard advertising campaigns in real-time

85+ percent of Fliphound advertisers are new to Out-of-Home advertising
Fliphound User Data