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8
Understanding The Replay Tach
The Replay can be used as a helpful diagnostic tool. Some examples are, using the Replay to see how stable the
engine is when on a throttle stop and how different stop settings affect the engine. Also the Replay can be used to see how
different tracks and weather affect the engine’s performance. Another use of the Replay is to check the amount of time from
when the box initiates a shift and when the shift actually occurs.
The Replay information can only be viewed when the engine is turned off. Once the engine is off the Replay
information can be viewed by pressing and holding down the 2nd function key, which is the far right key, and then pressing
the Replay Mode key, which is just to the left of the 2nd function key. Once both keys have been pressed the display will
show the letters PE, meaning the Replay is enabled. Any time after the Replay has been enabled, the release of both keys will
enter the unit into Replay mode. Upon entering Replay mode the starting line time is shown on the display and the operation
of the keys change to the function that is listed directly above each key. While in Replay mode if the engine is started the unit
will automatically turn off the Replay feature and exit from Replay mode.
The replay function of each key is listed below.
Replay Off Key...... When this key is pressed, Replay mode is turned off.
RPM / Time Key......... This key is used to switch the display between time and RPM.
Start / Stop Key........ This key is used to start and stop the Replay.
Shift Point Key.......... This key is used to jump to the next shift point.
Replay Speed Key.. This key is used to change the rate at which the replay plays.
Once the starting line time is being shown on the display, to start the Replay press the Start / Stop key. The Replay
will now start replaying the last pass saved in memory. The time on the display will start counting up in high replay speed. As
the time is counting up the speed of the Replay can be changed by pressing Replay Speed key. Each time the Replay Speed
key is pressed the speed of the Replay will change. The order that the speeds change is from high to medium to slow to extra
slow and then back to high. Press the Start / Stop again to stop the counting at the desired time. Then press the RPM / Time
key to show the saved engine RPM that corresponds to the time that was shown on the display when the Start / Stop key was
pressed.
The Start / Stop key can also be pressed while the RPM information is being displayed. This will cause the unit to
Replay the RPM in the order in which it was saved. Press the Start / Stop key again to stop the Replay at the desired RPM.
Then press the RPM / Time key to show the time that corresponds to the RPM that was on the display when Start / Stop key
was pressed.
The Shift Point key can be pressed any time the Replay has been stopped. When the Shift Point key is pressed, if
there was at least one shift, the unit will jump to the shift point. The display will show either the RPM or the time the shift
occurred, depending upon whether the RPM or the time was being viewed before the Shift Point key was pressed. If a time
was shown on the display when the Shift Point key was pressed, the unit will jump to the time when the first shift occurred.
After jumping to a shift point, several things can be done. One of these is switching between the time and RPM of the shift by
pressing the RPM / Time key. Or pressing the Shift Point key again to see if any other shifts occurred, a maximum of five can
be saved each pass. Or pressing the Start / Stop key to start the Replay from the current shift point being displayed.
When done, press the Replay Off key. While the Replay Off key is held down the letters PO will be shown on the
display indicating the Replay is off. When the Replay key is released the unit will exit the Replay mode and return to the same
point the unit was at when the Replay was turned on.