The data bits and bytes run at:

The data bits and bytes run at:

• A. 250,000 bits/second
• B. 1,000,000 bits/second
• C. 125,000 bits/second
• D. 50,000 bits/second

Answer: (A)

DMX512 data rate is fixed at 250,000 bits per second. This serial rate is what drives how fast the lighting data can be sent, since each of the 512 channels is one byte of data transmitted with framing bits. With 250 kbps, you end up delivering about 44 frames per second (roughly 512 bytes per frame, plus the start/stop/framing overhead). That refresh rate is what keeps lighting changes appearing smooth in real time. The other options would either be outside the standard (faster speeds) or would slow the refresh rate noticeably, which is why 250,000 bits per second is the correct rate for DMX512.

DMX512 data rate is fixed at 250,000 bits per second. This serial rate is what drives how fast the lighting data can be sent, since each of the 512 channels is one byte of data transmitted with framing bits. With 250 kbps, you end up delivering about 44 frames per second (roughly 512 bytes per frame, plus the start/stop/framing overhead). That refresh rate is what keeps lighting changes appearing smooth in real time. The other options would either be outside the standard (faster speeds) or would slow the refresh rate noticeably, which is why 250,000 bits per second is the correct rate for DMX512.