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Understanding the
Driver’s Reaction Tester
This exclusive Digital Delay feature allows a driver
using the buttons mounted in the vehicle to test their reaction
time. The Driver’s Reaction Tester in the Mega 475 has
been improved and now keeps and displays an average of
your reaction time while practicing. The Reaction Tester
feature can also be used to test different kinds of buttons and
button locations in the vehicle for the quickest release
possible.
To practice, press and hold down a push-button
connected to the P.B. 1 terminal, the screen will go blank.
After 2 seconds all eights will be shown on the screen, at
which time the driver releases the push button being held.
The display will now show the amount of time from when
the eights were displayed to when the push button was
released, this is the driver’s reaction time. If the driver lets
go of the button too soon, before the display turns on, dashes
will be shown on the screen to indicate a red light. If the
driver does not let go of the button within .75 seconds after
the eights are displayed, the display will show reaction time
of all nines to indicate a missed light. If you take more than
one practice shot while in the Driver’s Reaction Tester, line
2 will display the average reaction time. If the Mega 475 is
in P.B. Mode 2 the button connected to the P.B. 2 terminal
can also be used to practice with.
Keep in mind that the Reaction time does not directly
correlate to the Delay times used on the Dial-in and Delay
screen. This is because the Reaction Tester does not take
into account the vehicle’s roll out time. An approximation of
the vehicle’s roll out can be calculated by subtracting the
average of 10 passes from your normal Delay 1 time.
To exit the Driver’s Reaction Test Mode, press the
SET UP or BRKT key. The Mega 475 will automatically
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