Disable Auto Shutdown in standby mode

[claude1000]

Disable Auto Shutdown in standby mode
When pressing the ON / OFF button
the DM go in standby mode dm display : the time
after 1 hours the DM shutdown dm display : red led

Is the a possibility do disable this auto shutdown ? and stay in standby mode or may be change the auto shutdown time ?
or is there a other way to go in standby mode without time out ?

rgs

my OS:
DM800 HD
image Newnigme 4.0.7

[claude1000]

find the solution :

Menu > Setup > System > Customize > Setup Mode > Expert
then
Shutdown when no button has been pressed > disabled