Products > Test Equipment
New MicSig/EEVblog DP10007 HV Differential Probe
Ferrer:
Superb verification of how far this differential probe can go. Clear, precise explanation and also fun and entertaining, like all your videos. I am amazed that the probe can withstand rms voltage above 1KV without exploding. I have enjoyed watching you dissect the probe like a CSI forensic surgeon. By the way, you are a magnificent detective at looking for bastard screws. Thank you so much Dave !!
A hug from Mallorca, Balearic Islands
Kibabalu:
--- Quote from: RafaPolit on August 19, 2021, 06:17:35 pm ---
--- Quote from: Ferrer on August 14, 2021, 09:13:52 pm ---...
- In the Product Review of Bob Kalpon's channel it seems that the limit is 700 V (DC + AC Peak to Peak)
...
--- End quote ---
I looked at that video, seems like a good product! I purchased one and am waiting on the oscilloscope to arrive.
Regarding the video, there is a moment when he claims there is a slight phase shift at higher frequencies, and then, at even higher ones, that the wave is "ahead" of the original. I was wondering if that is even possible or if he misreads it and it is so forward-phased that it almost reaches the next period and is delayed almost an entire period minus a small percentage? Or can it really be presented "before" with a negative phase?
Thanks for any insight,
Rafa.
--- End quote ---
Dear Rafa,
your assumption is correct.
Due to the input voltage divider, with four parallel resistor-capacitor combinations in series, you get this high phase shifts.
ExaLab:
--- Quote from: EEVblog on August 24, 2021, 07:12:04 am ---Video test of clipping. Decided to make it a main channel video with teardown.
TLDR; clips at 580Vrms, flashes overrange alert at 470Vrms, survives 1100Vrms just fine, output goes to +/-8V
Doesn't mean it'll meet the performance specs at those limits, but that's what they are
--- End quote ---
A bit strange that the nodes of the four capacitors of the input HV divider are not connected with the related node of the symmetrical resistor network.
This approach does not seem to guarantee a balanced distribution of the input voltage between the various capacitors... I'm wrong?
Hydron:
Immediately from Dave's teardown pics I can see a significant design improvement from the DP10013 - this new one has an extra trimmer to allow CMMR to be tweaked between ranges.
The older DP10013 only had a single trimmer but 2 gain ranges - it relied on resistor matching to maintain CMRR between ranges, and the single trimmer had to be adjusted to the best compromise between high/low range CMRR. When I opened mine up to shorten the leads (another story - it had some _nasty_ peaking at about 70MHz) I ended up tweaking one of the gain resistors (where VR2 is in the new design) to get it bang on in both ranges.
mrprecision:
I have two MicSig DP10007 probes and did for both probes and for both measuring ranges some measurements. The CMRR is quite ok, only for the higher frequencies and for the 100x range the CMRR is quite out of the datasheet. What do you think?
Probe A, Bodeplot 10x
Probe B, Bodeplot 10x
Probe A, Bodeplot 100x
Probe B, Bodeplot 100x
Probe A, CMRR 10x
Probe B, CMRR 10x
Probe A, CMRR 100x
Probe B, CMRR 100x
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version