HELI 85
4.12 Gyro Sensitivity Adjustment (Function Mode)
The XP8103 offers two different types of Gyro Sensitivity
Adjustments — manual or automatic. This feature gives the user
the choice of selecting gyro sensitivity manually through the
rudder dual rate switch or automatically through the flight mode
switch. A JR NEJ-120S or JR NEJ-1000 gyro system can be used
with either of these methods.
In the Function Mode, use the UP and DN keys to select Gyro
Sensitivity and access by pressing the UP and DN keys
simultaneously.
Manual Gyro Sensitivity Adjustment
Manual Gyro Sensitivity Adjustment allows the pilot to select
from two different gyro sensitivities during all flight conditions.
This function is activated in conjunction with the rudder dual rate
switch.
Automatic Gyro Sensitivity Adjustment
The Automatic Gyro Sensitivity Adjustment feature allows the
pilot to automatically alter the sensitivity of the gyro from either of
4.11 Revolution/Acceleration Mixing, (Function Mode) cont.
Manual Gyro Rate Selection
for NEJ-120S Gyro
gyro sensitivity value
0-100%
Automatic or Manual setting
(Manual shown)
switch postion for
gyro sensitivity
(0-1)
Acceleration Mixing
The Acceleration Mixing function is provided to compensate for
the main rotor accelaration (and deceleration) torque. The
magnitude and duration of the signal to the tail rotor depends
upon rate of the throttle changes. Thus, quick, jerky throttle inputs
will yield more noticeable tail compensation. Note: The
Revolution Mixing Function must be established before an
accurate acceleration mix can be achieved, and the gyro
should be switched OFF for best results.
Rudder Offset Setting During Throttle Hold
Note that during throttle hold, Revolution and Acceleration
Mixing are OFF. At this time, set the offset value of the rudder
servo. If this offset value is zero, rudder pitch should be at zero.
Set offset value by using the plus or minus keys to correct tail
yaw when throttle hold is activated.
100%
0%
Press the UP and DN keys
simultaneously to enter/exit
the Function Mode
Press the DN and Select keys
simultaneously to access the
Function Mode List Display
Press to activate and
select Gyro Sensitivity
type (Manual or Auto)
→
INH
→
Manual
→
Auto
and to increase or
decrease Gyro
Sensitivity value
Press to move
arrow to position
0 or 1
Press to inhibit Gyro
Sensitivity Function
when at the Rudd D/R
position, or to set
Gyro Sensitivity
values to 0% at the
arrow position
To Program Mixing Function
To Revolution/
Acceleration Mixing
function
Press to move
cursor to position
to be adjusted
