We can ensure that our system is operating at 99% of the time without a loss of signal+ why do I need to monitor for Picture Quality?

We can ensure that our system is operating at 99% of the time without a loss of signal+ why do I need to monitor for Picture Quality?

Signal Present / Not Present and Picture Quality monitoring are not one and the same. Although a signal is present it does not mean that the video quality has not been compromised due to compression, path losses, etc, all defects that are clearly visible on the video without the signal actually having been lost.