Ok, this is a case of you live, you learn. My first truck of the night is always a conveyor belt trailer with extendo. I was reprimanded yesterday during break because my pph was a measly 280. I looked at my scanner, and it said I was over 320 parcels in 53 minutes since my very first scan of the night. I couldn't understand it. Than I realized, I've been scanning the trailer ULD well before the designated start time. Does pph automatically start when I scan the ULD, or does it start when I scan my first package. I should easily be well over 350 pph on that trailer, so i'm a little ticked off I was scolded for no reason.