Digital Oscilloscope |
The following demonstration is very dangerous because of LIVE electricity !!! |
RMB $500
|
Pay attention to the values of div, Vrms and the wave form
div = 50.0ms, 230.6Vrms |
div = 10.0ms, 230.7Vrms |
div = 2.00ms, 217.0Vrms |
For the Multimeter mode, the TrueRMS value is 225.6V
|
This time, pay attention to the scale of the oscilloscope and the wave form
scale is 100V
|
50.0V
moved the wave form downward to show the peak |
10.0V
This graph shows the peak is flat |
5.0V |
A.C. should be Sine Wave, but the result is different ... ... this may be due to
- The accuracy or precision of the Digital Oscilloscope is not good for this price range.
- The A.C. supply in Hong Kong is not perfect.
- Interference occurs in the power network
|
Using another Multimeter, the Vrms is 226.9V |
| This is my first time owning and using a Digital Oscilloscope, I have many to learn; however, Oscilloscope is a very useful tool to check the signals. RMB $500 is a good price for a poor DIYer. |
