Triggering of engine and gearbox Signal resolution For sensitive control of the engine speed and for low fluctuations during synchronisation a resolution of at least 8 bits is required for the 4–20 mA current signal. Better results can be achieved with 10- or 12-bit resolution. Terminal box 16 15 14 13 11 12 10 9 1 2 4 3 5 6 7 8 Plug X9 + A Plug A + for electrical engine control speed signal output 4–20 mA for engine control EDC input U EDC speed signal: Pulse-duty factor: 30:1 H = U–Batt. L = 1,3 Volt 6 impulses/engine revolution range: 0–260 Hz t b) Engine triggering with pedal value transmitter (mechanical) See Page16 104 + – – +