86 January & February 2021 http://www.elektormagazine.com
In Part 1 of this series, we saw how the AU2019
works, how it measures impedances, the
calibration and compensation principles used
and the hardware needed. Now it is time to
have a look at this LCR meter from a user’s
point of view.
Operating the LCR meter
The AU2019 can be used as a stand-alone
measurement device, using its LCD, the
rotary encoder and buttons, but it can also
be operated by a computer via a USB-link.Stand-alone mode
If the device is fitted with the display exten-
sion, it can operate independently, without
a computer. In this mode, it starts automati-
cally when using an external 5 V USB power
supply. However, if it is being powered fromNew LCR Meter
50 Hz - 2 MHz (Part 2)
Operation, Calibration, and Firmware Programming
By Jean-Jacques Aubry (France)The measurement principle, the calibration in software and the hardware of this new LCR
meter was discussed in the first part of this article series. In this second and final part, we will
cover the user interface, the calibration, and firmware programming of the AU2019.Table 1.
50 60 Hz
100 120 150 200 250 300 400 500 600 700 800 900 Hz
1.0 1.2 1.5 2.0 2.5 3.0 4.0 5.0 6.0 7. 0 8.0 9.0 kHz
10 12 15 20 25 30 40 50 60 70 80 90 kHz
100 120 150 200 250 300 400 500 600 700 800 900 kHz
1.0 1.2 1.5 2.0 MHzlabs project