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APPLICATION PROGRAM EXAMPLES

A.1.2 Making programmed measurements

In the following example the overshoot value on the rising edge of the Probe Adjust signal is measured. This is done by programming the input conditions in the RUN mode (INITiate:CONTinuous ON), followed by a single-shot measurement of the peak-to-peak (PTPeak) value and the rise time overshoot percentage (RISE:OVERshoot). The rise time overshoot value is calculated from the rise time overshoot percentage as follows:

- Rise time overshoot =

PTPeak * RISE:OVERshoot

V

 

100

 

Application summary:

Connect a 10:1 probe between channel 1 and the Probe Adjust signal (2000 Hz, 600 mV).

Program the following input conditions:

-AC input coupling

-Continuous trigger initiation (RUN mode).

-Trigger source channel 1.

-Trigger level zero to get a stable signal.

-Sweep time of 1 ms (100 μs/div.) to obtain two Probe Adjust signal periods on the display.

-Peak-to-peak value of 1.6V (0.2 V/div.) to keep the positive and negative edge on the display.

Stop the program to make an overshoot on the Probe Adjust signal. This can be done by turning the screw on the head of the probe.

Measure and print the peak-to-peak value.

Measure the rise time overshoot percentage.

Calculate and print the rise time overshoot value.

Application program:

Note: The program is supplied on floppy under file name EXAPPA12.BAS.

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Fluke PM-3370B, PM-3380B, PM-3390B, PM-3394B, PM-3384B user manual Making programmed measurements, 100