|This calculator should help you determine how much bandwidth a resolution needs, |
thus allowing you to more easily figure out what type of display cable you need.
Video bandwidth of common cables (without any TDMS/8b10b overhead):
CVT-RB stands for Coordinated Video Timings-Reduced Blanking and if often used by LCDs, other types of video timings are GTF, DMT, CVT, and the overhead may vary from resolution to resolution, and with EDID the monitor itself tells the system what the timings should be, which may or may not match typical CVT-RB timings. 59.94hz may also be shown as 60hz thus adding to the confusion
Cables has a transmission overhead also, if the TDMS method 8b10b is used for signals then the overhead is 2 bits per 8 bits, meaning 24 bit will use 30 bits of bandwidth.
This is why all numbers in this calculator is without any overheads unless stated otherwise. To compare with the cable limit, use the CVT-RB number for a close approximation.
Ironically flat screen panels require no blanking, and all this mess with video timing is a remnant from old CRT monitors.
© Roger Hågensen, EmSai™ 2014