Range Test - ROBBE RASST Systems Bedienungsanleitung

Range Test in Power-Down Mode
• Before flying a new model or using a new receiver, it is highly re-
commended to carry out a range test. The model should not be placed on
the ground, but raised by approximately 1-1.5 m above the ground. Use
a plastic or wooden table, crate or cardboard box etc for this purpose and
nothing metallic such as a camping table. Similarly, there should be no
conductive materials nearby (fences, cars etc.)
The HFM-12 C module has a special Power-Down-Mode for use when
range testing.

RANGE TEST:

• Turn on the transmitter and wait until RF is radiated (LED is a conti-
nuous green for (Hold) or flashing (F/S)).
• To activate the Power-Down-Mode, press and hold the "F/S, Range"-
Taste on the HFM 12-FC Module.
• As long as the button is depressed, the RF radiation of the RF section
will be reduced in power for the range test.
• When this Mode is active, the red LED will flash on the Module.
• First start up the model without the drive
motor.
Slowly move away from the model whilst slowly,
but continuously, moving a flying control func-
tion.
• While moving away from the model, observe
the control to check whether it operates inter-
mittently or stops. If possible, enlist a helper
to check the control operation of the model whilst range testing from a
distance.
Also when moving away from the model, turn the transmitter a little to
the left and right to simulate different aerial positions in relation to the
model.
• In Power-Down-Mode, you should achieve a range of 30-50 metres
(paces).
• If this initial range test is successful, repeat the same test but with the
motor running (caution: secure model if necessary). The range achie-
ved now should only be slightly less (approx. 20 %).
• The range should now be only slightly less (approximately 20%). If it
is noticeably reduced, then the motor is likely to be interfering with the
receiver. Remedy the situation or organise some help to check for the
source of the interference.
• Switching back to Normal operation is made by „releasing" the F/S-
Range button.
IMPORTANT:
Never press or touch the „F/S, -Range" button during flight!
NOTE:
Pay attention that the „F/S, Range button" is not touched when tur-
ning on the transmitter, this will alter the F/S Mode Status. To avoid
this happening, wait until the RF radiates (green light „ON" or flas-
hing and Red LED OFF).
Tipps zum Einbau und Antennenverlegung von 2,4 GHz FASST
Empfängern
Over the years, every RC user has developed their own favoured
ways of installing and using RC components. 2.4 GHz technology
signals a new era which can offer enormous benefits.This means
that there are a few differneces which need to be considered when
installing and using the components in a 2.4 GHz system.
One of the most common mistakes is to follow the previous practice
of wrapping the receiver in foam or insert it in a foam tube in order
to protect it from vibration. This is no longer necessary with the 2.4
GHz FASST receivers as they no longer have a ceramic filter and
are therefore immune to vibration.
This ‚well-meant' measure is actually counterproductive as the 2.4
GHz receivers feature high performance ICs which have a certain
current consumption, thus resulting in intrinsic heat built-up. The
foam padding around the receiver prevents the heat build-up from
dissipating from the receiver.
We recommend mounting 2.4 GHz receivers with double-sided adhe-
sive tape with a foam core (or Velcro strip). If possible, not over the
entire area but on „feet" to enable air to circulate around the recei-
ver. Installing receivers vertically will increase the air circulation.
The temperature range for remote control components is generally
between -15 °C and +55 °C. This is the typical range that is speci-
fied by manufacturers of electronic components. This temperature
range applies to virtually all electronic devices for everyday use.
This temperature range (–15...+55 °C) is true also for receivers and,
of course, this has been the case for many years. Naturally, this is
also true for the new generation of 2.4 GHz FASST receivers and
other 2.4 GHz systems stipulate this temperature range also. The
ICs from Wireless LAN technology, which are designed for dome-
stic use, are used and, therefore, have the same specifications.
The specified temperatures are, of course, only theoretical limits
and the receivers can cope with considerably higher ambient wor-
king temperatures (approx. 70-75°C). However, the component
manufacturers are unable to guarantee these higher operating
temperatures due to their production tolerances.
We therefore recommend that you pay due care and attention and
observe the following points:
• Der Einsatz von 2 LiPo-Zellen ohne Spannungsreduzierung wird
nicht empfohlen.•
regulation is not recommended.
• LiPo cells with a voltage converter generate heat and should not
be placed in the same mounting recess as or too close to the recei-
ver.
• To prevent the material and electronics from heating up excessi-
vely, do not leave models in the car on hot, sunny days .
• Ensure good ventilation or, even better, remove the model from
inside the car and place it in the shade of the vehicle.
• The fuselage and RC components will readily heat up as the result
of the sun shining through canopies that are transparent or painted
in light colours. Remove the canopy to provide air circulation in the
fuselage or cover with a light-coloured cloth.
• Cover dark models with a cloth or place in the shade.
• Never leave slim/black carbon fibre-reinforced/glass fibre-rein-
forced fuselages with an installed receiver in the car or in strong
sunlight.
• Do not mount the receiver in the vicinity of heat sources, such as,
motor and exhaust systems as the radiated heat can cause the
receiver to heat up excessively.
• Insulate silencers running through the fuselage, e.g. with balsa
cladding to avoid high temperatures being created within the fuse-
lage.
• Take steps to ensure air circulates through the fuselage.
• If necessary, provide ventilation openings in the canopy or fuse-
lage.
Using 2 LiPo cells without any voltage