GRAUPNER mc-16 Programming Manual page 5

cessible location that is well away from all other equip-
ment. Under no circumstances may a servo cable be
wrapped around the antenna or routed close to it.
Make sure that cables near the antenna cannot move
about during flight.
Routing the receiver's antennas
The receiver and its antennas must be positioned as far
away as possible from drives of any kind. If the model's
hull is made of carbon fiber material, the ends of the
antennas must extend outside of the hull.
If your model features a carbon fibre fuselage, the aerial
tips must always extend outside the fuselage for a
length of at least 35 mm. If this is not possible, it is es-
sential to substitute longer aerials for the standard ones
(approx. 145 mm long) fitted to HoTT receiver(s).
The orientation of the aerial(s) is not critical, but it is
advantageous to install one receiver aerial in a verti-
cal – upright – position in the model. If your receiver is a
Diversity type – two aerials – the active tip of the second
aerial should be positioned at 90 ° to the tip of the first
aerial, and ideally the distance between the two tips
should be greater than 125 mm.
Servo installation
Always mount servos with the provided rubber vibra-
tion-damper parts, see "installation notes" on page
54. Only in this manner can these parts be protected
against excessively hard vibrations.
Installing control rods
Control rods must be installed such that they operate
freely and smoothly. It is particularly important that all
rudder levers are able to move to their full limits, i.e. not
otherwise mechanically blocked.
In order to be able to stop a running motor at any time,
control rods must be adjusted such that the carburet-
tor tap is completely closed when the joystick and trim
lever are brought into their end idle position.
Pay attention that no metal parts, e. g. as a result of
rudder actuation, vibration, rotating parts, etc., rub
against one another. Metal-to-metal contact causes
electrical "noise" which can interfere with the correct
operation of the receiver.
Transmitter antenna orientation
Transmission field strength is minimal in an imaginary
line extending straight out from the end of the transmit-
ter's antenna. This means that "pointing" the
HoTT and mc-20 HoTT transmitter's antenna direct-
ly toward the model will not produce good reception
but rather degrade reception.
When multiple remote controls are operating simulta-
neously, pilots should position themselves in a loose
group. Pilots standing off to themselves not only en-
danger their own models but those of others as well.
However, when 2 or more pilots using 2.4 GHz remote
control systems are closer than 5 m to one another this
can lead to return channel overdrive which, in turn, will
trigger a range warning much too early. Increase your
distance between one another until the range warning
ceases.
Pre-start checks
Before switching the receiver on, be sure the throttle
control is at its Stop/Idle position.
Always switch the transmitter on first
and then the receiver.
Always switch the receiver off first
and then the transmitter.
If this sequence is not maintained, such that the receiv-
er is still switched on when the corresponding transmit-
ter is switched to "OFF", then the receiver may respond
to other transmitters or general radio frequency noise.
This can cause the model to execute uncontrolled
operations that may cause personal injuries and/or
property damage.
In particular, for models equipped with a mechanical
gyro:
before switching off the receiver, disconnect the mod-
el's power supply to prevent the motor from revving up
unintentionally.
The residual spin of a gyro often produces so
much voltage that the receiver may falsely in-
terpret a throttle signal! This will then cause the
motor to start up unexpectedly.
mc-16
WARNING:
If this order is not respected, that the receiver
is turned on, but the corresponding transmitter
is "OFF", the receiver could respond by other
transmitters and any interference.
The model can be run as a result uncontrolled steering
movements, thus possibly causing property damage
and / or personal injury.
In particular with a mechanical gyro for models:
Before you switch your receiver off, make sure by inter-
rupting the power supply, that the motor can not run
up unintentionally.
An expiring gyro can generate such a voltage that
the receiver picks up as an apparently valid throt-
tle command. Then, the motor may start uninten-
tionally!
Range test and function test
Perform checks for proper operation and range
before every session. Secure the model ad-
equately in place and ensure that no one is in
front of the model.
Perform a complete functional test on the ground and
execute a complete simulated flight to exclude the pos-
sibility of system faults or problems with the model's
programming. When doing this, be sure to follow the
notices provided on pages 84 and 94.
Never operate the transmitter in Model mode, i.e. for
flying or driving, without an antenna. Be sure the an-
tenna is firmly seated in its socket.
Safety notices 5