Mitsubishi NR-261 Manual page 260

Mitsubishi Multi Communication System
NOTE
When [Lap] is touched again, the measurement results
shown in "A" are transferred to "B".
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4. Touch [Stop]. Calculation is cancelled and the measure-
ment results are shown in Total View (A).
NOTE
When [Start] is touched, measurement is continued.
Even if the ignition key is set to off during measurement,
measurement is cancelled. At that time, measurement is
started again when the ignition key is set to on.
5. Touch [Reset].