True Fitness Treadmill ES9.0 + ES7.0 Owner's Manual page 24

Different from Speed Intervals 1 with the speed changing in
varying amounts.
When the treadmill is changing to a new target speed, the
matrix display readout will display the actual speed. As the
speed is changing, the message center will display
TARGET = 12.0 MPH
Once the treadmill reaches the new target speed, the Speed
readout will show the target speed.
Classic Pre-Set Workouts
Chapter One: Basic Operation
ES Treadmills Owner's Guide
Speed
Intervals
2
Actual
Speed
Display
24