Stack ST700 - Manual Lap Timing (Optional)

Installation ST700 Dash Display System
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❑ The LED shows green—Battery voltage is adequate for normal
operation.
❑ The LED shows red—The battery voltage is too low. Fit a fully
charged battery.
❑ The LED is off—The battery is discharged or disconnected.
Manual Lap Timing (optional)
Optionally, instead of the automatic infrared timing described above,
the ST700 Dash Display System can accept lap timing triggers from a
‘Lap Timer’ button located at a convenient position for the driver to op-
erate. Instead of the IR sensor, the cable from the Lap Timer button con-
nects to the LAP input as shown in Figure 3. To fit the manual lap timing
option you will require the switch (ST517) and the wiring harness
(ST918037).
With the manual lap timing option fitted, the driver must press the Lap
Timer button as the vehicle crosses the start line.
Because manual lap timing requires a positive action from the driver,
it is less accurate than the automatic lap timing option by IR sensor
already described. Furthermore, because split timing also comes di-
rectly from the lap timing input, any errors in the lap timing will de-
grade the accuracy of split times. For these reasons, Stack does not
recommend the use of manual lap timing.