Using Rotary Shaft Encoder's with the Pulsin command

Hi guys,

I have read that when using a 5VDC power supply to power the picaxe and inputs, that even though the manual states a low state in relation to voltage is = or < 0.8V and a high signal is = or > 2.0V, does this still apply to the pulsin command?

I am using a rotary shaft encoder to measure the speed of a motor but have only just realized that the A pulse output voltage peaks at just 0.193V. If using a pulsin input command would the picaxe recognize the difference between the the high and low state of the encoder or not?