1-14 GENERAL INFORMATION
~Flat
Ignition Timing (deg) (8TOC)
Advance
Retard
Engine Speed
The pickup coil is installed on the alternator cover so that it will be close to the alternator rotor. One side of the pickup coil core has a permanent magnet and the other side has a coil to signal the COl unit. Pickup Coil [A] Alternator Rotor [8]
Timing Plate [C] Output Voltage [0]
c
S
Direction of Rotation Every time either end of the timing plate on the rotor passes by the pickup coil, a pulse is generated and sent to the COl unit, that is, two pulses are generated per one revolution of the rotor. One is a positive pulse [A] and the other is a negative pulse [8].
Q)
OJ <0
~
0
>
( +)
'5 (- )
0:J
Jl
.....
_
11f
-
Flywheel Rotation
0
Corresponds to timing plate length