Rotax 912/914: 1 Pulse per Revolution

Aerovee: 6 Pulses per Revolution

Lycoming/Continental 6-cylinder: 1.5 pulses per revolution

Lycoming/Continental 4-cylinder: 1 pulse per revolution

Most engines are either 1 or 6 pulse per revolution

Jabiru Engines w/ Inductance Sensor: 2 pulses per revolution, red wire to RDAC, black wire to ground, HI-GAIN on