Hi @Sailormouth . Here are the resource that come to mind:
Someone else will roll through with some uber deets, I’m sure – but the basics are:
- The 1V DC signal can be +/-1 volt, whereas the 75R video signal is clipped to 0V to +0.7V, so that displays can read it properly
- The 1V DC signal has no embedded sync data, whereas the 75R video signal has horizontal, vertical, and frame pulses (so the 1V video is not valid for display on anything but the Liquid TV module preview jacks)
- The 1V DC signal is pretty much a luma signal with no color subcarrier data, whereas the 75R video signal has the color subcarrier transposed on the luma signal