Products > Test Equipment
New MicSig/EEVblog DP10007 HV Differential Probe
EEVblog:
Response for the DP10007 vs the HVP70
Just like I told Micsig right back at the start, it didn't meet the -40dB spec at 10MHz, and they said they'd look into it and they never got back to me.
Phase and gain response is not smooth like the HVP70. But as expected, bets are are off over 10MHz with such probes which is why the spec stops there.
ojete:
Thanks Dave, I was interested in the DP10007 but this measurements don´t look very good.
This problem was "supposedly" fixed in a later revision of the probe but I don't know if this is true, maybe if someone has a recent unit can´t test it and tell us if something has changed.
This cmrr loss and abrupt phase shift at 6 khz, maybe can be because of a resonance? and maybe because of the ceramic capacitors and the piezo effect?
Martin72:
Hi,
Got one bought a few months before, will test it in the next days.
EEVblog:
--- Quote from: ojete on December 28, 2022, 02:00:21 pm ---Thanks Dave, I was interested in the DP10007 but this measurements don´t look very good.
This problem was "supposedly" fixed in a later revision of the probe but I don't know if this is true, maybe if someone has a recent unit can´t test it and tell us if something has changed.
This cmrr loss and abrupt phase shift at 6 khz, maybe can be because of a resonance? and maybe because of the ceramic capacitors and the piezo effect?
--- End quote ---
Interesting, they didn't convey that to me, and they knew I waiting for their response before I ordered them.
Mine is certainly an original unit.
Video of the testing:
dreamcat4:
ok so if this transpires that there was a product revision that improves the cmrr. then it would be great to see a teardown comparison. to know if there were any internal changes if its possible, maybe to figure out how to mod older units. or if not possible for example without breaking the calibration etc?
:-//
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