Operation Manual

Pitch Curve (Low, Middle, High)
(access via Set-Up Menu)
74 Helicopter
Pitch Curve
Four different profiles for the collective pitch
response can be adjusted and called up in flight by
external switches. Three curves are available for
normal flight (under motor power), and a separate
curve is available for autorotation.
The curves are determined in each case by three
points:
• The low collective pitch / throttle stick position,
called "PL..." (Pitch Low),
• The middle collective pitch / throttle stick
position, called "PM..." (Pitch Middle),
• The high collective pitch / throttle stick position,
called "PH…" (Pitch High).
The three sets of adjustment are successively called
using the CH SEL button.
Selection of which of the possible curves to be
adjusted achieved is by operation of the external
switches connect to the transmitter board
connections 3, 4 and 5; the display changes
accordingly:
Switch 3 = OFF, ATR inactive
Both switches in OFF position “PL1”
Switch 4 = ON, Switch 5 = OFF “PL0”
Switch 4 = ON or OFF, Switch 5 = ON “PL2”
Switch 3 = ON, ATR activated
Switch 4 and 5 = ON or OFF “P…A”
Setting
After selection of the point required using the
CH SEL button and operation of the appropriate
external switches, the value displayed can be set
using the INC and/or DEC buttons over a range of
0... ±125 steps; pressing the CLEAR button resets
the value to the standard setting.