Graupner GmbH & Co. KG MC-20 用户手册

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58
Digital trimming
  Digital trimming
Functional description and description of C1 cut-off
Digital trim with visible and audible indicators
Both joysticks are equipped for digital trimming. By 
default, turning trim wheels will offset the joystick's 
neutral position by 4 increments (out of a possible 
100 steps per side). This offset is also reported 
acoustically. A brief press on the trim wheel will 
reset an existing trim offset back to "0". Any other 
"zero points" can be specifi ed with the help of the 
»Trim memory« menu. If fl ight phases have been 
created and each assigned with a fi tting name in 
the »Phase settings« and »Phase assignment«
menus, then these names will appear at the bottom 
left in the »Trim memory« menu and their trim values 
will be stored on a fl ight-phase specifi c basis.
The default 4-steps per click increment range placed 
in every new model memory upon initialization can 
be changed at any time in the »Stick mode« menu, 
page 104 or 106, separately for each joystick plane, 
in a range of 1 … 10 for fi xed-wing models and in 
a range of 0 … 10 for helicopter models. (A trim 
function can be deactivated by selecting "0" steps, 
which can be advantageous in helicopters with 
certain gyro systems.)
Current trim values are automatically stored 
when a model memory change is made. 
Furthermore,  – except for the trim of the throttle/
airbrake joystick, the so-called "C1"(channel 1) 
control function – digital trim can be set to operate 
globally or on a fl ight-phase specifi c basis within a 
memory location. This choice is made, separate for 
each joystick plane, in the second column of the 
»Stick mode« menu, page 104 or 106.
Notes:
Finding the mid-point position during a fl ight is 
easy and can be done without even looking at the 
display. A brief press on the trim wheel will reset 
trim to "0" or, in the »Trim memory« menu, will 
reset a stored fl ight-phase specifi c trim value. 
The "cut-off trim" function, known from other 
Graupner remote control systems in the 
mc and 
mx series, and typically described in this section 
can be realized with the help of the "Thr. CutOff" 
option in the »Basic settings, model« menu, 
see page 81 and 90.