RVI to RVC 4 calibrating

This is No 4 in a series of short videos describing how to fit the Spiyda Design Tachometer conversion board This one shows how to calibrate the tachometer using the audio files downloaded from the website www.spiyda.com The video shows the process of adjusting with tips on how to get an accurate reading. Note -: the wav file player is playing the 100Hz and 200Hz files one after another on a continuous loop. Other videos are RVI to RVC 1 dismantling the tacho RVI to RVC 2 fitting the circuit board RVI to RVC 3 powering up the board RVI to RVC 4 calibrating RVI to RVC 5 alternative connections