| Products > Test Equipment |
| Oscilloscope probe ground leads act as FM attennea |
| << < (5/12) > >> |
| Fungus:
--- Quote from: dmulligan on October 25, 2023, 07:57:32 pm --- --- Quote from: Fungus on October 25, 2023, 01:44:30 am ---Mine looks like this: --- End quote --- Do you have BW Limit enabled for that channel? Does it change if you set your probe attenuation to 10x since you are running your probe at 10x? --- End quote --- Oh, I forgot my probe was in 1x mode. I don't have bandwidth limit enabled though. In 10x mode I see pretty much the same thing. |
| Fungus:
--- Quote from: dmulligan on October 25, 2023, 11:14:42 pm ---My #1 concern was that I don't have a dud scope. --- End quote --- The only thing that counts is what you see when there's no probe connected to the 'scope. This is mine with probe connected and the probe's clip connected to the probe tip: This is mine with no probe connected: |
| CosteC:
Do you have grounding lead connected? DHO800/900 series with USB-C PSU introduced new failure mode - lack of grounding and "unnoticed loss of grounding" What is possible far easier in DHO800/900 is to add ferrite core on PE/grounding lead which may help in some cases. |
| ebastler:
--- Quote from: dmulligan on October 24, 2023, 11:12:53 pm ---I am using the ground lead provided by Rigol through my benchtop power supply. In the other room I loosely put it into the ground plug. I have also tested with the scope floating also with no difference. --- End quote --- |
| iMo:
--- Quote from: CosteC on October 27, 2023, 11:43:42 am ---.. What is possible far easier in DHO800/900 is to add ferrite core on PE/grounding lead which may help in some cases. --- End quote --- That will not help you in any cases, imho. The ferrite bead put on a grounding wire will introduce serial impedance, like 10-100 ohm based on frequency.. You want the opposite - to have as small as possible impedance towards the ground.. |
| Navigation |
| Message Index |
| Next page |
| Previous page |