Dayton Audio DATS V3 calibration question

[miscom]

I just bought a new DATS V3.
After Test Leads Calibration and Impedance Calibration (with integrated 1k resistor) there is a small increase of the value of the Test Leads resistance around 20 kHz and small decrease of the value of the integrated 1k resistor around 20 kHz (see pictures).

Is this the expected result after the completed calibration ?

Thanks in advance for any advice.

 

[AllenB]

That doesn't look like a change in value, as much as a calculation anomaly.

 

[miscom]

Thanks for the reply AllenB.

I agree with your comment, it is a very small change in the value, but the calibration error is always the same even though I made the measurements on three different laptops and two operating systems, Win10 and Win7. Also, the calibration error is the same for the cases when I measured with another 1k test resistor and new test leads.
I will also do a calibration on the Linux operating system and if the result is the same, it is probably a bug in this particular DATS V3 device.

 

[AllenB]

I was thinking software, since it's the last value and there's nothing beyond it to interpolate between. Agreed it shouldn't happen, but it doesn't look particularly troublesome in this case.

 

[miscom]

Thanks again AllenB.

I asked this question because I thought someone else had the same problem for which there is a solution. In any case, this type of error should not create wrong measurement results.