Velleman-projects EDU06 Assembly instructions Bedienungsanleitung PDF herunterladen (Seite 7)

Experiment 2: Adjustable AC voltage

(advantages of the auto-setup function)

Connection layout:

Connection summary:

GND clip : 2

Probe tip : 3

Purpose:

The purpose of this experiment is to show the advantages of the auto-setup function to measure AC

voltage.

How?:

Turn on the HPS140 Handheld Pocket Scope 1. (see HPS140 manual for How-To instructions).

Place the probe switch “x1/x10” to ‘x1’.2.

Trimmer RV1 allows us to adjust the output voltage on test

point 3 between 0V and the full input voltage. Turn RV1 fully

anti-clockwise (0V output). The trace on our oscilloscope

screen remains a ﬂ at line, as there is no input voltage.

Next, set V/div to 50mV/div

(see HPS140 manual for How-To instructions).

Slightly turn RV1 clockwise until a sine wave is displayed on

the screen. You only need to turn it slightly before the signal

appears. If the signal goes ‘off-screen’, turn RV1 anti-clock-

wise until the signal is correctly displayed. In the lower right

hand corner, you can read the current RMS value of the AC

voltage measured, e.g. 100mV (0.1V)

Connection summary

GND clip :

Probe tip : 3

Exp.2: Adjustable AC voltage (advantages of the auto-setup function)

NOTES:

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Velleman-projects EDU06 Assembly instructions Bedienungsanleitung Seite 7