@ -49,6 +49,7 @@ known_units = {
'ds' : 'deciseconds' ,
'cs' : 'centiseconds' ,
'ms' : 'milliseconds' ,
'us' : 'microseconds' ,
'PWM' : 'PWM in microseconds' , # should be microseconds, this is NOT a SI unit, but follows https://github.com/ArduPilot/ardupilot/pull/5538#issuecomment-271943061
'Hz' : 'hertz' ,
'kHz' : 'kilohertz' ,