Products > Test Equipment

Rigol PVP3150 probes not adjustable?

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wdonders:
Got my new Rigol DS1102Z-E today.
It seems that the provided PVP3150 probes are not adjustable?
The adjustment hole is there, and the tiny flathead comes in the bag, but there is no notch for the flathead to grip onto.. can't see a slot even with a loupe  :-//
I don't think my probes need adjustment though, the square wave looks great so I suspect the probes came pre adjusted with my unit? Does that makes sense?
(..and after adjusting Rigol just grinded the little grove flush which should be visible in the hole..?)

wasedadoc:
Photo please.

mwb1100:
The PVP3150  user guide instructs you to compensate on page 2:

  - https://beyondmeasure.rigoltech.com/acton/attachment/1579/f-78ea846c-3d0e-42e7-b081-1da54df02d66/1/-/-/-/-/PVP3150_UserGuide_CN%26EN.pdf

I'm guessing you got a slightly defective probe (or set) and are lucky that it appears pre-compensated.  Or you're simply not seeing the screwhead that allows compensation correctly.  They're tiny buggers.

srb1954:

--- Quote from: wdonders on January 13, 2023, 11:30:44 pm ---I don't think my probes need adjustment though, the square wave looks great so I suspect the probes came pre adjusted with my unit? Does that makes sense?

--- End quote ---
Seems very unlikely that the probes were precisely pre-adjusted for your scope. Not only would the probes have to be adjusted to match a scope input but each scope input would then have to be precisely adjusted to the exactly same capacitive loading, over all input attenuator ranges, so that you could swap probes between inputs and still maintain the correct waveform fidelity.

Then there is the problem of drift of the probe parameters over time and temperature. Even the highest quality scope probes seem to require occasional readjustment to obtain optimal performance.

Njk:
The probes that came with my scope a year ago are all adjustable. Rigol provided five of them instead of four, to satisfy me better. But what if later they did "optimize" the design further, removing that capability? It'll be interesting to see the images.

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