Measuring capacitors and inductivities not related to speakers

redmountain · Dec 13, 2024

Thank you John
smothing seems to help
I'll check imp measurements again when I am back home

luigi57 · Dec 14, 2024

Why impedance measurement graph higher value is limited to 1KOhm?
I'm measuring an MC step-up transformer and by scrolling cursor impedance maximum is more than 16KOhm, Is there a way to increase the maximum Y axis value in order to see the complete curve on the graph?
In the left hand measurement view, the impedance curve is showed cormpletely inside the graph...

trobbins · Dec 14, 2024

Change Y axis to Log scale.

luigi57 · Dec 14, 2024

Thank you for the hint, Tim!

redmountain · Dec 17, 2024

I get inconsistent impedance measurements even after following tips here...
also the component model isn't always the same, sometimes a series resistor and a coil in series,
sometimes a parallel resitor in parallel to the coil, and another series coil in serie...
The cabling is shielded, measuring ferrite coils from 10 mHy to 2.5 Hy
Using a Macbook Pro mid 2012 's headphone out and line in
Line in impedance is set - like default - in REW : 20'000 ohms
Also the phase graph shows noise in the higher frequencies
???

trobbins · Dec 18, 2024

Perhaps limit upper frequency to 10kHz in sweep.

For a simple loopback using those out/in ports, do you get flat line responses?

redmountain · Dec 18, 2024

trobbins said:
Perhaps limit upper frequency to 10kHz in sweep.

For a simple loopback using those out/in ports, do you get flat line responses?

Yes

Measuring capacitors and inductivities not related to speakers

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