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Matt R.

Trouble with BNC adapter probes

Question

Hi.

I just got my Analog Discovery 2 in the mail today, so I decided to test it out with some basic functions in order to get the hang of it. Without the BNC adapter, my scope works fine. I hooked it up to the output from the waveform generator just to have something up and running. Works fine without the BNC adapter. Then I plugged in my BNC adapter and hooked up the probes. I clipped the positive lead to the power supply and the negative clip to ground. The scope then could not detect any noticeable voltage. It was hovering around 0V (due to noise). Just to see if it can detect it to anything I hooked it up to the discovery's power supply at 4V. Checked that with a multimeter to make sure it was putting out around the right voltage and it was. Still the probe couldn't detect anything. Checked hooking it up to an arduino's 5V power supply and ground. Nothing. I am thinking there could be an issue with my BNC adapter and/or probes. I would really like some assistance. Thank you.

Best,

Matt

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Check to see if the jumper for the cap is not present. Jumper is AC/DC coupling. no jumper = AC coupling, no DC will be measured with AC coupling. Odds of two probes reasonably handled failing at the same time are pretty low, but do they work on other scope? 

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