Making Measurements

3

Measuring Pulse Width

The meter measures pulse width in the 500.00 or 1000.0 ms ranges.

To measure pulse width, set up the meter to measure frequency; then press N two more times. As with the duty cycle function, you can select which level the meter uses by pressing [ to trigger on the positive slope or ] to trigger on the negative slope. A typical pulse width display is shown in Figure 3-18.

You can improve pulse width stability by selecting the averaging feature. Press M until “AVG” appears in the display.

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Figure 3-18. Pulse Width Display

3-27

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Fluke 189 user manual Pulse Width Display