Activation speed defines the speed at which alert sound is played.
The beeper is active when you exceed the activation speed. Bogey and voice announcements are played when the activation speed is exceeded for the first time.
There are four primary types of activation speeds that may be combined in different ways.
- Fixed speed is a value in MPH or km/h, not related to the current speed limit.
- Absolute offset is an offset from the current posted speed limit in MPH or km/h. For example, if the current speed limit is 40 MPH, and the offset is set to +5 MPH, then at this location, the activation speed is 45 MPH (40 + 5 = 45).
- Relative offset is an offset from the current posted speed limit in percents. For example, if current speed limit is 40 MPH, and the offset is set to -10%, then at this location the activation speed is 32 MPH (40 - (40 * 10%) = 40 - 8 = 32)
- Fallback speed is similar to the fixed speed but only available when absolute or relative speed is set. This speed is used when the current speed limit isn't available. If the fixed speed is set, then it is used as a fallback speed.
The speeds mentioned above can be used in various combinations. Usually, these combinations represent the fastest or slowest of the configured speeds. However, there are some more complex combinations.
When configuring an activation speed, there is a table showing activation speed at different posted speed limits. It can be used for verifying if actual values match your expectations.