Measurement Signal Voltage & Flow With Oscilloscope

A. Measurement of DC voltage signal
Prisoners R1 and R2 function as a voltage divider. Ground the oscilloscope linked to negative DC power supply. Probe-1 channels are connected end of the link R1 to R2. DC voltage measured in the DC mode.
For example:
VDC = 5V / div. 3div = 15 V
DC voltage form a thick, straight lines on the CRT screen. Measurable voltage is measured from the horizontal zero line kegaris DC.

Figure 9.3 DC Voltage Measurement Method

B. Measuring Voltage AC, period T and frequency F.
The transformer is used to isolate the electrical listrikyang measured by the oscilloscope. If using the electricity then frekuensinya50 Hz.
For example: Vp = 2V / div · 3 div = 6 V
Vrms = 6 / V2 = 4.2 V
T = 2ms / div · 10 div = 20 ms
f = 1 / T = 1 / 20ms = 50 Hz
Sinusoidal AC voltage with a high U-shaped and the width of the period T. The magnitude of a voltage of 6 V and 20 millisecond period and frequency of 50 Hz.

Figure 9.4 AC Voltage Measurement Method

C. Measure Electric Current Signal AC
Basically the only oscilloscopes to measure voltages. To measure currents made indirectly by R = 1W to measure the voltage drop.
For example:
Vp = 50 mV / div · 3div
= 150 mV = 0.15 V

Vrms = 0.15 / V2 = 0.1 V
I = Vrms / R = 0,1V / 1Ω
= 0.1 A
Shape R melaluiresistor current signal is sinusoidal voltage resemble. In the load resistor voltage signal and the current signal will sephasa.

Figure 9.5 Flow Measurement Principles