[Technologist]

Not really, that's the point of having resilience.... you can work on one side while the other continues.

There's multiple playout engines, two sets of suites in two cities and at least two sets of everything downstream of that.

There's no need these days to stop a channel  to do maintenence work

But it may be a lot easier to take a channel down to do whatever is needed
If there is no need for it to be outputting, ….
All the more so with current architectures where there is no main and standby.


On transmitters there are now totally separate main and reserve systems
So there is no half power working ……
Each system has duplicated transmitters and one is off and the other one is on
And the changeover is just a matter of a few seconds. ( I’ve done this on CP)

PSB A code and mux was installed such that at the change over point
both the A and B sides were identical I.e not only in content but in bit timing …
…. so you certainly could not see the join !