OpenEVSE outputs a 1000hz pilot signal when connected to an EV and Ready.
Using a Multimeter with frequency measurement, a oscilloscope or an EV Sim II from nslayer. Enter State B and measure frequency from pilot to ground.
Frequancy should measure between 980 to 1020hz.
Using a Multimeter with duty cycle measurement, a oscilloscope or an EV Sim II from nslayer. Enter State B and measure duty cycle from pilot to ground. Duty Cycle should match formulas below.
6 to 51A -- Amps = Duty cycle x 0.6 -- Duty cycle = Amps / 0.6
51 - 80A -- Amps = (Duty Cycle - 64) 2.5
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