i dont know what your talking about really, but ill break it down for you.
i think your thinking of it wrong.
set your mpc to 1 bar
say 90 bpm.
then turn on your metronome and try and record some drums or something.
notice how your mpc makes 4 beeps then loops the bar over?
those are 1/4 notes
so your metronome keeps time in 1/4 notes, i have mine set for 8th notes so it beeps 8 times per bar.
thats the same as 8 on the T.C.
so your gonna have 4 notes, then if you double that 8th notes, then if you double that, 16th notes, then if you double that 32nd notes.
all of these will fit in 1 bar, each one up just goes faster.
for example 16, 16th notes will fit in 1 bar.
so assign a hihat to a pad and hold down note repeat, then hold down that pad with your sample on it record it playing each of these different TIMING CORRECTION settings.
now you can hear that 8 8th notes fits on 1 bar, 16 16th notes, ect.
the practical use of this is
if your trying to play your own 8th note hihats, but you mess up a little bit, you can use timing correction to CORRECT your timing,
if applied right, it will make your 8th notes be perfectly on time each time.
it snaps each note to the nearest 8th note (or whatever timing correction setting you have selected).
youll have to learn about bars and beats, and all that good stuff before you can actually make music with your mpc.
try listening to your favorite song and try to count the bars in it, that helped me alot.
also look up time signatures, most popular music is set in 4/4 time, and your mpc's default is 4/4 time.
watch this video and at 11 seconds pause it.
http://www.youtube.com/watch?v=vrb6WbX9K3ssee how he has a 1 bar loop set up?
count the little squares from left to right, see how there is 16 of them? and they are all grouped in groups of 4,
each big line is a quarter note, all the little boxes are 16th notes.
your mpc is just snapping your notes to a grid when you use TC mode.