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Commissioning and operationSYN/TROLPressing the “Syn./Trol.” key (press once) enables the “Engine speed synchronisation”function. Pressing the key again (press once) disables the function onceagain.It is only possible to enable or disable the engine speed synchronisation on theactive control stand when both command master levers are in the engine speedrange “Forwards” or during the “Warming Up” function. Before exiting from theseareas, disable the “engine speed synchronisation”.While the function is active, LED 4 “SYNCHRO” shows continuous light.. As soon as one of the command masters leaves the engine speed range “Forwards”without terminating the synchronisation beforehand, it is switched off automatically.In this case, the LED “SYNCHRO” flashes rapidly (approx. 0.2 seconds on / 0.2 secondsoff) and the acoustic signal transmitter issues a continuous tone at the activecontrol stand (this is not a fault alarm but a warning).The second command master must then be set into the “Neutral” position to terminatethe warnings. The engine speed of the relevant command master is kept at idlingspeed during this period.While the control system is in the function “Synchronisation”, the engine speeds of bothpower units can only be changed using the control lever of the “Master system”. If thereis a command change to another control stand, the active function “Engine speed synchronisation”is also taken over onto the new control stand.TrollingIf the special function “Trolling” has been enabled in the setting units, there is the possibilityto use the “Syn./Trol.” key to enable the trolling mode to continuously adjust theclutch slip.SYN/TROLPressing the “Syn./Trol.” key (press once) enables the “Trolling” function. Pressingagain (press once) disables the function once again.It is only possible to enable or disable the trolling function on the active controlstand when the command master lever (both command master levers in the casetwin-engine systems) is (are) in the “Neutral” position. While the function is active,LED L8 “Trolling” shows continuous light.If there is a command change to another control stand, the active function “Trolling”is also taken over onto the new control stand.. In the trolling mode, the command master function changes in comparison tothe power shift mode.The command master function in the trolling mode is described below.36