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Keysight Handheld LCR Can't Measure Resistance as well as my Flukes?
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Martin72:
@wraper,Yep, therefore he could measure only 1Ohm on a 39kOhm resistor (neg. reactance= cap).
@Reprobyte: Measured value should change when you change the measure frequency of the keysight.
Reprobyte:
I did a small experiment to confirm why my LCR works the way it does and thought this would be useful for someone like myself to see the difference between a test using AC vs DC on the component in a circuit.

When the LCR is in resistor mode. The 0.33Ohm resistor measures correctly, (image 1) but in a small circuit with the 2200uf capacitor it lowers the Ohms. (image 2)

The DMM in resistor mode. The same circuit does not lower the Ohms reading from the resistor. (image 3)

Martin72:

--- Quote ---When the LCR is in resistor mode. The 0.33Ohm resistor measures correctly, (image 1) but in a small circuit with the 2200uf capacitor it lowers the Ohms.
--- End quote ---

This makes sense, when only the resistor is measured, it´s "parasitic" capacitance and inductance won´t take a greater effect ( respectively it´s parasitic inductance is dominating, see the phase angle in the upper right corner of the display, it´s not 0°).
With the "big" 2200µF cap, the capacitive reactance is dominating, see also the phase angle (negative).
Kim Christensen:
Put your LCR meter in DCR mode instead: Press and hold the Freq down button for 2 secs. Exit the mode the same way.


Ooops never mind... That's for the 33 version.
Reprobyte:

--- Quote from: Martin72 on April 28, 2023, 11:51:34 pm ---see also the phase angle (negative).

--- End quote ---

Thanks I will check this angle while testing to get more understanding, I see it is neutral almost on the single resistor
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