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PowerBox-Systems
− World Leaders in RC Power Supply Systems
6. CHANNEL LOCK WHEN UNDERCARRIAGE IS RETRACTED
The
PowerBox Cockpit’s door sequencer
also features one last unique
function: it is now possible to switch a channel off when the undercarriage
is retracted. The purpose of this feature is to prevent the retracted nose-
wheel moving inside the fuselage when the pilot gives a rudder command,
as this may cause the mechanical system to jam. The function can be found
under
GEAR UP - OUTPUT OFF
in the Door Sequencer menu. Simply use
the
SensorSwitch
to select the output which you wish to disable when the
undercarriage is retracted. Select the output, and confirm your choice with
the
SET button
; at the same time the system stores the position of the no-
sewheel servo at which it is to remain.
CAUTION:
This function is extremely useful, but it also creates a danger:
if you accidentally include a control channel (e.g. elevator) in your pro-
gramming, the control channel will then be switched off when you retract
the undercarriage after the model takes off. This will usually result in loss
of the model!
7. FRAME RATE:
What does ‘frame rate’ mean?
This value indicates the time interval at which the servo signal is refreshed.
Modern digital servos are unlikely to encounter problems with the 12 ms set-
ting, but older analogue servos may require a longer setting of 21 ms. For
more information on servo compatibility please contact the manufacturer of
your servos. A faster refresh rate causes the servos to respond more swift-
ly, and they will offer greater effective torque because they are capable of
counteracting the forces acting upon them more quickly.
CAUTION:
The Frame-Rate setting should only be changed if you are
certain that your servos are designed for the Frame-Rate you wish to
use. In the extreme case please note that the servo may lose its trigge-
ring, and become “soft”.
