LCR Meter U1733C Auto Identification Series-Parallel Mode

[2X]

Hello,
I would like to ask what means the Down and Up column for each frequency and range. For example, at 20 H range, it writes that uses Parallel Mode for Down and Serial Mode for Up in order to measure an inductor. What means by Up and Down. I can't understand what mode uses in order to measure an inductor at 20H range @100Hz .

According to the below article (generally speaking) “series equivalent circuit mode is used when measuring low-impedance elements (with an impedance of approximately 100 Ω or less) such as high-capacity capacitors and low inductances” and “parallel equivalent circuit mode is used when measuring high-impedance elements (with an impedance of approximately 10 kΩ or greater) such as low-capacitance capacitors and high-inductances”.

https://www.hioki.com/global/learning/usage/lcr-meters_2.html

[TimFox]

It should be mentioned somewhere in the manual.
My guess (not having the manual) is that "down" and "up" refer to the aftermath of an auto-range switching near the boundary between decade ranges of inductance.