| Electronics > Beginners |
| Digital Oscilloscope Maximum Input Voltage |
| << < (12/14) > >> |
| mike_mike:
I watched only a part from that video a few weeks ago. I am still waiting for an answer for the question that I asked in my previous post. |
| tautech:
--- Quote from: mike_mike on February 13, 2018, 09:26:44 am --- I watched only a part from that video a few weeks ago. I am still waiting for an answer for the question that I asked in my previous post. --- End quote --- DON'T probe mains with ordinary probes. Period. The energy levels are too high to risk it. It's your choice but I tend to restrict myself to ~150V with 10x probes and anything higher brings out a 100x or 1000x probe. With a modern DSO with good sensitivity such probe attenuation is no handicap. |
| mike_mike:
I think I was not sufficiently clear when I wrote the first question. My question is if I can power the oscilloscope from the mains (230Vac here in Europe) if the mains voltage is 247-250Vac, while in the manual is mentioned that the scope can be powered up to 240Vac ? The value of the mains voltage (247Vac) was measured with an Uni-t UT52 digital multimeter. |
| mike_mike:
When I was calibrating the probe, I saw that the calibration signal is having a little ”movement” on the screen. For example, I saw that the vertical lines of the signal are making some movement to the left and to the right as you can see from this video: https://www.youtube.com/watch?v=IOxCg90y3JI&feature=youtu.be The settings on the scope are: 1V/div, 250uS/div Is that movement of the vertical lines normal ? |
| tautech:
--- Quote from: mike_mike on February 13, 2018, 01:34:51 pm ---I think I was not sufficiently clear when I wrote the first question. My question is if I can power the oscilloscope from the mains (230Vac here in Europe) if the mains voltage is 247-250Vac, while in the manual is mentioned that the scope can be powered up to 240Vac ? The value of the mains voltage (247Vac) was measured with an Uni-t UT52 digital multimeter. --- End quote --- Yes, it's safe to use it connected to your mains. All mains voltages worldwide have some variation and instrument design allows for it. --- Quote from: mike_mike on February 13, 2018, 04:37:43 pm ---When I was calibrating the probe, I saw that the calibration signal is having a little ”movement” on the screen. For example, I saw that the vertical lines of the signal are making some movement to the left and to the right as you can see from this video: https://www.youtube.com/watch?v=IOxCg90y3JI&feature=youtu.be The settings on the scope are: 1V/div, 250uS/div Is that movement of the vertical lines normal ? --- End quote --- Normal. |
| Navigation |
| Message Index |
| Next page |
| Previous page |