Products > Test Equipment
Spikes and noise on Rigol DHO814
Fungus:
--- Quote from: csuhi17 on March 15, 2024, 11:07:27 am ---
--- Quote from: shapirus on March 15, 2024, 10:21:31 am ---To capture the radiated interference.
--- End quote ---
Everything is clear now.
I misunderstood, I thought he could see the noise from the power supply on the channels.
--- End quote ---
Yeah, that wasn't made clear.
Simple solution: Don't do that!
shapirus:
Well, it's not fully clear how exactly OP measured/captured that noise and in what situation it was causing trouble.
I assumed it was EMI, because I've seen that myself. With the probes disconnected this switching noise doesn't make it to the displayed waveform in my case. Maybe the OP's situation is different.
eTobey:
I measured it on my prototype, which is powered through a cheap power supply. Maybe it came through this. But that Rigol powersupply should not spew all that noise all over the place anyway right?
csuhi17:
Not in my case.
With the above method, I have to put the probe quite close to the power supply, I have to almost touch it. Also, there are parts and positions where less noise is detected.
If I touch the probe with my hand or its wire, the noise increases.
If you measure the noise on the cheap power supply, you will be able to determine whether it is bothering you.
The power supply I bought for my Riden is so noisy that it was also visible on the regulated output.
When I measure, I always place such power supplies as far away as possible.
In the very first post, the channel setting and the probe were set the same, both 1x or 10x?
eTobey:
Yes
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