Garmin G1000 Manual page 118

ENGINE & AIRFRAME SYSTEMS
Battery and essential bus voltages are displayed using gauges. DC buses are shown in green when energized.
When not energized, the connection line to the main bus is removed and the bus label is displayed in red.
The Emergency Buses switch has two positions, UP (open) and DN (ground). If the switch is in the UP
position, the essential bus is connected to the battery bus. If the switch is in the DN position, the essential bus
is connected to the main bus.
A red "X" over a component indicates invalid data or a failed unit.
104
Figure 3-25 Battery and Essential Bus Low Voltage
Figure 3-26 DC Bus Status
Essential Bus Connected
to the Battery Bus
Figure 3-27 Essential Bus Connections
Garmin G1000 Pilot's Guide for the Socata TBM 850/900
Bus Not Energized
Essential Bus Connected
to the Main Bus
190-00709-05 Rev. D