18
Understanding Time and RPM Mode
The Mega 350/450 can handle up to 5 shifts each pass. These 5 shifts can be either made on time, RPM, or a combination
of both. The shifts occur in sequence starting with Shift Number 1 and progressing to Shift Number 5. When a shift occurs
the Mega 350/450 checks to see if the next Shift Point setting is valid. If the next Shift Point is an RPM, the only invalid
setting is zero. If the next Shift Point is a Time, the unit checks to make sure that the Shift Point time setting is greater than the
amount of time that has gone by since the release of the Transbrake. If the amount of time is greater the unit waits for the next
Shift Point to occur. If the amount of time is not greater, the next Shift Point is invalid. If an invalid Shift Point is reached,
further shifting of the vehicle is terminated. This means that for vehicles that require only one shift, the driver should set the
second Shift Point to zero.
The shifts will occur for a 20 second time period, only after the transbrake has been released.
Understanding the Driver’s Reaction Tester
This new feature in delay boxes allows a driver using the buttons mounted in the vehicle to test their reaction time. This
can also be used to test different kind of buttons and locations that they are mounted in the vehicle for the quickest release
possible.
To select the Driver’s Reaction Tester, repeatedly press the Set Up key until everything on the screen turns on at once, this
can also be used to check for proper screen operation. Once in Reaction Test Mode, if a push button connected to either P.B. 1
or P.B. 2 is pressed and held down, 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
where 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. To exit the Driver’s Reaction Test Mode press the Set Up or BRKT key. If neither P.B. 1 nor P.B. 2 push-button is
pressed, the unit will automatically exit the Driver’s Reaction Test Mode after 30 seconds. Each time a push-button is pressed
the 30 second resets.
NOTE:
When in the Driver’s Reaction Test Mode, the Transbrake solenoid will not be activated when a push button is
pressed. This
is to prevent any damage to the solenoid from over heating.
Understanding the Replay Tach
(Mega
450
Only)
The Mega 450 has a built-in replay tach that has two record speeds. The HI speed records for 15 seconds while the LO
speed records for 30 seconds. To view or change the recording speed setting, repeatedly press the Set Up key until the Replay
Tach screen is displayed. As the screens are toggled through the Replay Tach screen will be the only screen that does not have
any text on the left hand side of the screen. Once the Replay Tach screen is being displayed, the top row of digits display the
engine RPM, with the next row down being the corresponding time. The third line will display the current record speed setting
and the last line will show the current Shift Point being displayed.
Use the Up Arrow key to scroll the time up and the Down Arrow key to scroll the time down. There are four scrolling
speeds in each direction with the scrolling stopped in the middle. Each time an Arrow key is pressed and released the scrolling
speed will speed up. If while the time is scrolling and the opposite Arrow key is pressed and released the scrolling speed will
slow down. For example if the Up Arrow key was pressed three times to get a faster scrolling speed, pressing the Down
Arrow key once would cause the scrolling speed to slow down. Pressing the Down arrow an additional two times would cause
the scrolling to stop. If the Down Arrow were then pressed again the time would start scrolling down.
When the recording speed is set to HI the Mega 450 records the engine RPM every hundredth of a second for fifteen
seconds after the Transbrake releases. To start the Mega 450 recording when in HI mode, the unit must first be armed. This is
done by pressing and releasing the push-button that is connected to the Line Lock terminal. After the unit is armed if delay
cycle is ran using either Delay 1 or Delay 2 the Mega 450 will start recording when the Transbrake releases. While the Mega
450 is recording, “Recording” will be displayed on the screen. . The time is relative to the release of the Transbrake.
When the recording speed is set to LO the Mega 450 records the engine RPM every two hundredth of a second for thirty
seconds after the L.L.P.B. is releases. To start the Mega 450 recording when in LO mode, Press and release the button
connected to the L.L.P.B. terminal. While the Mega 450 is recording, “Recording” will be displayed on the screen. The time
is relative to the release of the L.L.P.B. (Line Lock Push Button).