Products > Test Equipment

New MicSig/EEVblog DP10007 HV Differential Probe

<< < (34/38) > >>

manupthehills:
 :clap: :clap: :clap:

marcoe87:
Thanks ExaLab for the great work.
I am an owner of a DP10007 probe and I would be interested in fixing also the CMRR degradation effect around 7 kHz.

Could you share at least some hint on how to address it? Is it related to input wires?  :popcorn:

mawyatt:

--- Quote from: ExaLab on October 08, 2023, 01:24:00 pm ---

Basic Upgrade

A simple and ready-to-use solution that can satisfy most of you. This version, in principle, does not even require recalibration of the probe (which however I highly recommend...)

Required components:

            1.2 pF 1206 NPO Capacitor      (x1)
            1.5 pF 1206 NPO Capacitor      (x1)
            0 ohm  1206 Resistor              (x1)



--- End quote ---

Thanks for the information on improving this flawed DP10007. We used the simpler approach and used 0805 COG capacitors, as we had these available.

Noted that the cover has flanges on the mounting posts that apparently are to hold the PCB in place when tighten down, these flanges might hit the added components if these are located near the PCB edge by the  mounting post cut out. By positioning the added components (like the 1.2pF cap) between the main XY axis of the case, say ~45 degrees, then the post flanges are avoided. One could also cut the post flange for clearance.

Anyway, thanks for the info on improving these DP10007s, we noted an improvement as you've shown.

Edit: BTW if your scope has an FFT, this is a good way to set minimum values in the presence of large noise signals. Also, a old Tek 577 can serve as the high voltage low frequency source, just tap off the Collector Test Terminal.

Best,

ceut:
Hello,
Sorry to dig up this topic, I have posted into it in 2022, then I have gave up the idea to buy this DP10007 (and other diff. probes).

For 2024: again I'm looking forward to buying a Differential probe, and I don't know if they have fixed the CMRR problem since ?
Maybe someone has bought a new one recently ?

I saw that a new model has come up (MDP700) but I don't like the big BNC part, to use on a portable DSO.
The output cable are really short.
And also, I think the "UI" is not as good as the DP series (leds seem to be very small to see them, and the button seem not to be as great).

So, thanks for any information/advice someone can give me (even on other brands)  :-+

EEVblog:

--- Quote from: ceut on May 10, 2024, 10:51:59 am ---Hello,
Sorry to dig up this topic, I have posted into it in 2022, then I have gave up the idea to buy this DP10007 (and other diff. probes).

For 2024: again I'm looking forward to buying a Differential probe, and I don't know if they have fixed the CMRR problem since ?
Maybe someone has bought a new one recently ?

I saw that a new model has come up (MDP700) but I don't like the big BNC part, to use on a portable DSO.
The output cable are really short.
And also, I think the "UI" is not as good as the DP series (leds seem to be very small to see them, and the button seem not to be as great).

So, thanks for any information/advice someone can give me (even on other brands)  :-+

--- End quote ---

Micsig just sent me an MDP series probe. Haven't tried it yet. I think they just gave up on the DP series.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod