Fluke 192/196/199

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

4

5

6

Move the upper cursor to 100% of the trace height. A marker is shown at 90%.

Highlight the other cursor.

Move the lower cursor to 0% of the trace height. A marker is shown at 10%.

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).

 

 

 

 

 

 

 

 

 

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

Figure 25. Risetime Measurement

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Fluke 192, 199, 196 user manual Using Cursors on a A+B, A-B or A*B Waveform, Making Rise Time Measurements