Measure the voltage across the 10k resistor what is hard about that?
The top of the 10k should go to the input connection the FB, the bottom of the 10k should go to a ground connection on the FB.
Active high and active and low are meaningless without reference.
Active High means that when an event occurs the output will be high IE +5v.
Active Low means that when an event occurs the output will be low IE 0v.
It usually applies to Digital outputs / inputs.
The signal you are reading is an analogue signal – it can have any value (between 0 and 5v in this case) not just high or low, 5v or 0v.
The ADC (analogue to digital convertor) of a Micro does not care about anything except the voltage at its input with reference to ground. That voltage is the voltage developed across the 10k resistor.
Unless the FB ADC inputs have been modified from the norm, it should be the same.