DSO138 [2]: Calibration
Before using the oscilloscope, it has to be calibrated. I had some issues and I hope that this sum-up will help you.
![DSO138 [2]: Calibration](/content/images/size/w2000/2016/08/IMG_20160829_154417-1.jpg)
After assembling the DSO 138 Kit, I had to calibrate the device.
For that, you have to plug the red probe on the square signal connector, on the top of the device.
Set the setting as such:
- CPL: AC
- SEN1: 0.1V & SEN2: X5 => 0.5V/div
- 0.1ms / div
Use a small screwdriver to gently turn the C4 capacitor trimmer.
Do the same with the C5 capacitor trimmer, with the following settings:
- CPL: AC
- SEN1: 1V & SEN2: X1 => 1V/div
- 0.1ms / div
Unfortunately, my first try was not a success. One of the capacitor trimmer was defective, and I had to un-solder it and buy another one to replace it.