Service Menu
To access, Press Menu for 8 seconds, then press Esc twice
It gives some interesting information, Hours used and in what mode, firmware and hardware models, some signals seen and some error codes and descriptions. May be useful for troubleshooting and if curious, but no settings to change
Hitting the right key accesses more pages, Where there are multiple pages (signal) you can hit the down arrow for the next page!
There are 7 pages - Model, Versions, Codes, Error info, Temporary info, Signal Info and another log.