Scooterotica

hi, just bought a mini tacho trail tech tto,looks great but does anybody know which pulse setting i should use ,set it to 1 pulse per rev and found my bike ticks over at 1400rpm and free revs to 18k so ive tried it on 2 pulses per revolution and those figures are obviosly halved,but which should it be ,i always thought 1 spark per revolution was all you got on a standard electronic?

I pulse per rev is right and 1400 tickover is about right as well

seems to want to work set on 2, ticks over at 800 revs out at 9800, sorted