ruffrecords
Well-known member
I have only just begun to use my Rigol 1052E digiscope in earnest recently. I was using it to look at SRPP tube stage outputs and also at HT dc supplies. In both cases I kept getting bursts or prolonged periods of high frequency oscillation in the tens of MHz region. After lots of experiments, changes of power supply, turning off mains borne ethernet and head scratching it turns out to be the scope itself. I was looking for small signals so I had it at its highest sensitivity (2mV/div). Even with the probe shorted to its ground clip I was getting small amounts of interference. It was not until by chance I moved the probe towards the LCD display that I discovered that was the source of the interference. I am using the probes supplied with it so I don't think it is a probe problem.
Anyone else seen this?
Cheers
Ian
Anyone else seen this?
Cheers
Ian