When we talk about 3G-SDI we have to be more precise in order to avoid misunderstandings. E.g. when sending a 1080p50 signal from one device to another, it is not ensured that the transmission will be successful, although both devices can handle 3G-SDI signals.


The reason for this is the option of different mapping schemes for transporting video signals over the serial digital interface.

In this Application Note the three SMPTE ST 425-1mapping schemes Level A, Level B Dual-Link, and Level B Dual-Stream of fast progressive formats (YCbCr 4:2:2 10Bit 60p 59p 50p) will be discussed.