hi-lo OR lo-hi: MS1 V3.0 Opto Circuit

[Spoolin6er]

Can someone explain what changes if I use a hi-low vs low-hi circuit for my optical sensor input as seen here?:

http://www.msextra.com/doc/ms1extra/MS_ ... l.htm#hall

It seems to me that it would just invert the signal and I would end up with different trigger teeth or a different trigger angle, no?

If it matters, I am using a DIY autotune trigger disk in a Nissan 240sx KA24DE distributor/CAS.

Thanks for the help!

-Matt

[Matt Cramer]

Either one will work when using our disc. You are correct that it just changes the trigger angle. (If the slots are different lengths, though, it's another matter.)

[Spoolin6er]

Thanks for the help! I was trying to figure out why it existed if it just inverts the signal - different length pulses makes sense. Thanks!