Embraer EMB145 Operation Manual page 1650

CREW
AIRPLANE
AWARENESS
OPERATIONS
MANUAL
When conditions are such as to generate a Terrain Caution alert
(approximately 60 seconds prior to potential terrain conflict), the aural
message "CAUTION TERRAIN, CAUTION TERRAIN" is sounded and
the amber "GND PROX" indication is displayed on the PFD. This is
repeated every seven seconds as long as the airplane is still in the
caution envelope.
When conditions have been met to generate a Terrain Warning alert
(approximately 30 seconds prior to potential terrain conflict), the aural
message "TERRAIN, TERRAIN, PULL UP" is sounded and the red
"PULL UP" indication is displayed on the PFD.
The terrain image will appear automatically on the MFD when a terrain
threat event occurs.
Page Code
2-04-30 29 01
REVISION 38