30
SPEKTRUM DX3R USER GUIDE
31
SPEKTRUM DX3R USER GUIDE
general notes
Radio controlled models are a great source of
pleasure. Unfortunately, they can also pose a potential
hazard if not operated and maintained properly.
It is imperative to install your radio control system
correctly. Additionally, your level of operating
competency must be high enough to ensure you are
able to control your model under all conditions. If you
are a newcomer to radio controlled models, please
seek help from an experienced modeler or your local
hobby shop.
Safety Points to Obey for Modelers
• Ensure your batteries (both transmitter and receiver)
have been properly charged for your model.
• Keep track of the time the system is turned on so you
will know how long you can safely operate your DX3R.
• Check all servos and their connections prior to
each run.
• Do not operate your model near spectators, parking
areas or any other area that could result in injury to
people or damage of property.
• Do not operate your model during adverse weather
conditions. Poor visibility can cause disorientation and
loss of control of your model.
• Do not point the transmitter antenna directly toward the
model. The radiation pattern from the tip of the antenna
is inherently low.
• Do not take chances. If at any time during the operation
of your model you observe any erratic or abnormal
operation, immediately stop operation of your model
until the cause of the problem has been ascertained
and corrected. Safety can never be taken lightly.
warranty and
user InforMatIon
warnIng
An RC model is not a toy! If misused, it can cause
serious bodily harm and damage to property. Operate
only in open areas, following all instructions included
with your radio.
warranty PerIod
Exclusive Warranty- Horizon Hobby, Inc., (Horizon)
warranties that the Products purchased (the “Product”)
will be free from defects in materials and workmanship
for a period of 1 year from the date of purchase by the
Purchaser.
lIMIted warranty
(a) This warranty is limited to the original Purchaser
(“Purchaser”) and is not transferable. REPAIR
OR REPLACEMENT AS PROVIDED UNDER THIS
WARRANTY IS THE EXCLUSIVE REMEDY OF THE
PURCHASER. This warranty covers only those
Products purchased from an authorized Horizon
dealer. Third party transactions are not covered by this
warranty. Proof of purchase is required for warranty
claims. Further, Horizon reserves the right to change
or modify this warranty without notice and disclaims
all other warranties, express or implied.
(b) Limitations- HORIZON MAKES NO WARRANTY
OR REPRESENTATION, EXPRESS OR IMPLIED,
ABOUT NON-INFRINGEMENT, MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE OF THE
PRODUCT. THE PURCHASER ACKNOWLEDGES
THAT THEY ALONE HAVE DETERMINED THAT
THE PRODUCT WILL SUITABLY MEET THE
REQUIREMENTS OF THE PURCHASER’S INTENDED
USE.
tIPs on usIng sPektruM 2.4ghz
While your DSM equipped 2.4GHz system is intuitive
to operate, functioning nearly identically to 27
and 75MHz systems, following are a few common
questions from customers.
1. Q: Which do I turn on first, the transmitter or the
receiver?
A: It doesn’t matter, although it is suggested to
turn the transmitter on first. If the receiver is turned
on first, all channels will be driven to the failsafe
position set during binding. When the transmitter
is then turned on, the transmitter scans the 2.4GHz
band and acquires an open channel. Then the
receiver that was previously bound to the transmitter
scans the band and finds the GUID (Globally Unique
Identifier code) stored during binding. The system
then connects and operates normally.
If the transmitter is turned on first, the transmitter
scans the 2.4GHz band and acquires an open
channel. When the receiver is turned on, the receiver
scans the 2.4GHz band looking for the previously
stored GUID. When it locates the specific GUID
code and confirms uncorrupted repeatable packet
information, the system connects and normal
operation takes place. Typically this takes 2 to 6
seconds.
2. Q: Sometimes the system takes longer to connect
and sometimes it doesn’t connect at all?
A: In order for the system to connect (after the
receiver is bound) the receiver must receive a
large number of consecutive uninterrupted perfect
packets from the transmitter in order to connect.
This process is purposely critical of the environment
ensuring that it’s safe to operate when the system
does connect. If the transmitter is too close to the
receiver (less than 4 ft) or if the transmitter is located
near metal objects (metal TX case, the bed of a truck,
the top of a metal work bench, etc.) connection
will take longer and in some cases connection
will not occur as the system is receiving reflected
2.4GHz energy from itself and is interpreting this
as unfriendly noise. Moving the system away from
metal objects or moving the transmitter away from
the receiver and powering the system again will
cause a connection to occur. This only happens
during the initial connection. Once connected the
system is locked in and should a loss of signal
occur (failsafe) the system connects immediately
(4ms) when signal is regained.
3. Q: I’ve heard that the DSM system is less tolerant of
low voltage. Is this correct?
A: All Spektrum surface receivers have an
operational voltage range of 3.5 to 9.6 volts. With
most systems this is not a problem as in fact most
servos cease to operate at around 3.8 volts. When
using multiple high-current draw servos with a
single or inadequate battery/power source, heavy
momentary loads can cause the voltage to dip below
this 3.5-volt threshold, causing the entire system
(servos and receiver) to brown out.
4. Q: Sometimes my receiver loses its bind and won’t
connect requiring rebinding. What happens if the
bind is lost during use?
A: The receiver will never lose its bind unless it’s
instructed to. It’s important to understand that during
the binding process the receiver not only learns the
GUID (code) of the transmitter but the transmitter
learns and stores the type of receiver that it’s bound
to. If the system fails to connect, more than likely the
transmitter is near conductive material (transmitter
case, truck bed, etc.) and the reflected 2.4GHz
energy is preventing the system from connecting.
(See tip #2)
