Fluke 196C user manual Using Cursors on a A+B, A-B or A*B Waveform, Making Rise Time Measurements

Fluke 196C/199C

Users Manual

Using Cursors on a A+B, A-B or A*B Waveform

Cursor measurements on a A*B waveform give a reading in Watts if input A measures (milli)Volts and input B measures (milli)Amperes.

For other cursor measurements on a A+B, A-B or A*B waveform no reading will be available if the input A and input B measurement unit are different.

Making Rise Time Measurements

To measure rise time, do the following:

1	From scope mode, display the
	cursor key labels.
2	Press to highlight	(rise time).
	Observe that two horizontal
	cursors are displayed.
3	If only one trace is displayed,
	select MANUAL or AUTO (this

automatically does steps 4 to 6). For multiple traces select the required trace A, B, or M (if a math function is active).

4	Move the upper cursor to 100%
	of the trace height. A marker is
	shown at 90%.
5	Highlight the other cursor.
6	Move the lower cursor to 0% of
	the trace height. A marker is
	shown at 10%.

The reading shows the risetime from 10%-90% of the trace amplitude.

Figure 25. Risetime Measurement

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