If a jumper is in place covering and shorting out the two metal pins, the signal is set to be high.
If the jumper is missing, ie you just have two metal pins the signal is set to be low.
Eg the image above is set High, High, Low, and if you look at the table above that that is Eight stepping.
If the jumper is missing, ie you just have two metal pins the signal is set to be low.
Eg the image above is set High, High, Low, and if you look at the table above that that is Eight stepping.