Conformity Declaration - ROBBE HFM12-MX Manual De Uso

tial improvement in the attitude dependence which is characteristic of sin-
gle-aerial systems; this in turn significantly enhances reception security.
To achieve optimum reception, please note the following points:
• The most important point is to position the two aerials as far as possi-
ble away from each other.
• Each of the two aerials should be deployed in as straight a line as pos-
sible.
• The angle between the two aerials should be approximately 90°.
• Large models are often fitted with quite large metal parts which have a
damping effect on RF reception. In such cases the two aerials should
be positioned to left and right of the offending object.
• Both aerials should be at least 1.5 ... 2 cm away from any conductive
materials such as metal, carbon etc.
• These strictures only apply to the end part of the aerials - not to the co-
axial cables.
• Avoid turning the co-ax cables through sharp angles, and do not kink
the cables.
• Protect the receiver from damp and vibration.
PLEASE OBSERVE THE NOTES
REGARDING RECEIVER INSTALLATION
Notes on receiver installation
The next section contains a few basic recommendations aimed at
obtaining best possible reception in the model:
RECEIVER AERIAL:
• Wherever possible deploy the two aerials at 90° to each other in order
to minimise attitude dependence problems.
• Do not route the aerials parallel to electrically conductive materials
such as cables, metal "snakes", pull-cables, carbon fibre pushrods
etc.; do not deploy them inside electrically conductive fuselages, or
along the outside of such fuselages.
• Deploy aerials as far away as possible from:
- high-current speed controller / motor leads;
- sparkplugs, ignition modules;
- locations where static charges may be generated, such as toothed
belts, turbines, etc.;
- shielding materials (carbon, metal etc.); if the fuselage is made of such
material, run the aerials out of the fuselage by the shortest possible
route.
- Do not attach the end of the aerials to any electrically conductive com-
ponent (metal, carbon, etc.).
' robbe Modellsport
All manuals and user guides at all-guides.com
RECEIVER
• The advice outlined above also applies to the positioning of the receiver
itself.
• Wherever possible avoid installing any other electronic components in
the immediate vicinity of the receiver.
• Unless there is no alternative, the receiver power supply should always
consist of low-resistance NC or NiMH cells.
• Please avoid using "switching" BEC systems as the receiver power sup-
ply, as these are essentially "interference generators", producing a con-
stantly changing high-energy frequency spectrum. This interference is
then passed directly to the receiver through the connecting lead. In any
case these systems often represent inadequate power supplies since
their output voltage constantly changes with variations in load.
• Many speed controllers for high cell-count batteries do not feature an
integral BEC system for the receiver power supply, but still contain an
"internal" BEC system which powers the speed controller electronics;
this works on the same principle, but with lower power. If you use such a
system, once again the interference source is connected directly to the
receiver. In such cases it is advisable to install a suppressor filter, No. F
1413, to protect the receiver from this interference. Other types of filter
often feature only a ferrite ring, but the Futaba suppressor filter also fil-
ters the input signal.
Model:
• To avoid problems caused by static charges in the model the following
precautions should be taken:
The two photos only
• HELICOPTER
show receiver installa-
Connect the tail boom to the chassis using an earthing strap. If your
tion and aerial deploy-
model is fitted with a toothed-belt tail rotor drive system, we recommend
ment in schematic
attaching a "copper brush" to dissipate electrical charges caused by the
form. For all actual
toothed belt. You may also find it necessary to connect the belt pulleys to
installations the recei-
the chassis using an electrically conductive strap. It is generally neces-
ver must be protected
sary to connect the tail boom to the motor case of electric-powered
from vibration in the
model helicopters.
model.
• TURBINES
Connect the turbine's metal shield to an earthing strap in order to avoid a
build-up of static charge.
Important Note
If the MX-22 transmitter is switched on in Flight Mode, no modulation
signals are transmitted, and no connection can be made. If this should
occur, simply switch the transmitter to the "Normal" flight mode (phase)
before switching the transmitter on again.
Post Office Regulations
The R&TTE (Radio Equipment & Telecommunications Terminal Equipment)
Directive is the European regulation which applies to radio systems and
telecommunications apparatus, and is applicable to all such equipment
which has general conformity approval. One section of the R&TTE Directive
regulates the setting up and operation of radio systems in the European
Community.
An important change compared with earlier regulations is the abolition of
approval procedures. The manufacturer or importer must submit the radio
system to a conformity assessment procedure before marketing the equip-
ment, and is obliged to notify the appropriate authority (register) when the
process is completed.

Conformity Declaration

robbe Modellsport GmbH & Co. KG hereby declares that this product satis-
fies the fundamental requirements and other relevant regulations contained
in the appropriate CE directives. The original Conformity Declaration can be
viewed on the Internet under www.robbe.com: click on the logo button mar-
ked "Conform" which is included in each device description.
4