DIY Balanced / Differential oscilloscope probes?

Someone asked for the schematics.
Here you are.


Patrick

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Attachments

  • Diff Probe 8421 HV Sch.PNG
    Diff Probe 8421 HV Sch.PNG
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NicMac also built one and did some distortion measurements with his RTX.
CMRR is measured to be -76dB.


Patrick
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Attachments

  • RTXloopback.png
    RTXloopback.png
    137.9 KB · Views: 206
  • AD8421_AC_1x_.png
    AD8421_AC_1x_.png
    140.8 KB · Views: 181
  • AD8421_AC_1x_coherent.png
    AD8421_AC_1x_coherent.png
    193.4 KB · Views: 186
  • AD8421_DC_1x_coherent.png
    AD8421_DC_1x_coherent.png
    195.2 KB · Views: 188