Fluke 105B, 99B manual Rise Time Measurement

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RPM 1 METER (revolutions per minute) Measure one count per revolution in Meter mode.

RPM 2 METER (revolutions per minute) Measure one count per two revolutions in Meter mode.

dt (delta time) SCOPE Measure the time difference between the (vertical) cursors in Scope mode.

1/dt (frequency) SCOPE Measure the relative frequency of the waveform in Scope mode. It is shown as the reciprocal value of the time difference (dt) between the vertical cursors.

rise time SCOPE Measure the rise time between 10% and 90% points of the first rising slope of the waveform in

Scope mode. First use and to determine the 0% and 100% points of the waveform. These are the intersection of the cursors with the waveform. Set the rising slope to at least four time divisions for a precise measurement. The rise time is now instantly displayed.

Figure 3-3. Rise Time Measurement