Input length is 12 inches
For 2nd harmonic, RPM range is from 9790 to 11880 with a pulse strength of 10 percent
For 3rd harmonic, RPM range is from 7356 to 8407 with a pulse strength of 7 percent
For 4th harmonic, RPM range is from 5735 to 6413 with a pulse strength of 4 percent