Using Atl (Adjustable Throttle Limit) - FUTABA FP-8SGAP Instruction Manual

•USING ATL (ADJUSTABLE THROTTLE LIMIT)

HIGH
Servo move-
ment by
throttle lever
FS FUNCTION/HOLD FUNCTION
Fail Safe (FS) is a function which moves the servo
of each channel to a position preset (at the trans-
mitter) when an erroneous signal or continuous
strong noise is received for about 1 second or
longer. When the proper signal is lost or strong
interference received, the airborne system will
operate in the HOLD mode for about 1 second
before switching to the FS mode. When a normal
signal is received again for about 1 second, FS is
released and normal control resumes.
The HOLD functionstops all servos selected (by
button [47] at the position just before noise or
interference was received. When a normal signal is
resumed, HOLD is released.
The Throttle Trim Lever 19 affects the servo po-
sition only when the throttle control stick is in the
LOW (IDLE) position. HIGH throttle position
SLOW
remains unchanged. Adjustment of the throttle
linkage is therefore very convenient.
Servo move-
ment by
throttle trim
lever. (30% of
total travel)
Fig. 44
A combination of FS and HOLD functions can be
selected on each channel at the modeler's discre-
tion.
FS, HOLD, and SERVO TEST functions are oper-
ated using three switches on the trimmer panel.
Fig. 45
Use a servo horn that allows slightly more
throw than needed.
Set the maximum opening at HIGH throttle
using Memory ATV (Page 18).
Use Memory ATV to set the extreme LOW
position to prevent servo binding when the
throttle barrel closes against the idle stop
screw.
With the engine running, use ATL Throttle
Trim Lever 19 to set the optimum idle
speed.
A. ATV/FS Buttons [46] and [47]
B. Channel Select Switch [48|
C. Function Select Switch [49]
Channel select switch
Fig. 46
Function select switch
Fig. 47