Using LCR meter transformer test fixture

[Flyback]

Hi,

We are using the Hameg 8118 LCR meter with the LCX-Z5 test fixture.

If you are using the LCX-Z5 test fixture to measure an inductor (not a transformer), then would you do the open/short calibration by opening all connections for the open calibration, then shorting all together for the short calibration?
At 08:10 of the following, they show an inductance measurement with the LCX-Z5, but dont show how the open/short calibration is done prior to the measurement.

At 2:23 they show the LCX-Z5 being put through open/short calibration, but thats for a transformer measurement.

Hameg HM8118

R&S®HM8118 LCR Bridge User Manual

Rohde & Schwarz User Manual for R&S®HM8118 LCR Bridge.

www.rohde-schwarz.com

Page 9 shows the LCX-Z5....
LCX-Z5

https://docs.rs-online.com/15e4/A700000010763429.pdf

________________________________------------------------------
Also, regarding the Hameg HZ186 transformer test fixture, the open/short calibration is described on page 62 of the following.....

https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_common_library/dl_manuals/gb_1/h/hm8118_1/HM8118_UserManual_de_en_06.pdf

However, 2:20 of this video....

.....shows the open/short calibration being very different for the LCX-Z5, which is equivalent to the HZ186. Do you know the reason for the difference?

 

[aliarifat794]

To properly calibrate the Hameg HM8118 LCR meter using the LCX-Z5 test fixture for measuring an inductor, you indeed need to perform an open/short calibration.
Video at 2:20: Illustrates the calibration for the LCX-Z5, indicating potential differences in the calibration setup compared to the HZ186. This discrepancy could be due to differences in the fixtures' designs, measurement principles, or specific use cases (inductor vs. transformer).

 

[Tony Stewart]

What's wrong with the Auto Calibration description in the Manual Section 3 ?

start the open and short circuit calibrations by
pushing the buttons ZERO/OPEN 11 resp. ZERO/SHORT

12 . The instrument will now determine correction factors
at all 69 frequency steps valid for the presently connected
measurement cables and store them until the instrument is
switched off. This procedure will last appr. 2 minutes

 

[Flyback]

Video at 2:20: Illustrates the calibration for the LCX-Z5, indicating potential differences in the calibration setup compared to the HZ186. This discrepancy could be due to differences in the fixtures' designs, measurement principles, or specific use cases (inductor vs. transformer).

Thanks yes At 2:23 they show the LCX-Z5 being put through open/short calibration, but thats for a transformer measurement. We want for an inductor measurement.

What's wrong with the Auto Calibration description in the Manual Section 3

Thanks, it doesnt show how to connect for an "inductor measurement calibration" with the LCX-Z5

The problem is, how to connect the LCX-Z5 for calibration when you want to measure just inductors, not transformers?
Nowhere do they describe this.