G1000

[RXPAHC1]

In the TBM900  starting engine check list they want the G1000 to be in composite mode,just wondering what does that mean.

i was told it’s the display back up button but iam not sure that’s correct 

thanks  

[RobW05]

It's correct, although I thought this is called "revisionary mode". 

You want it to be in that mode preventively in case you loose one of your displays during critical monitoring phase of your startup procedure.