AR7350/AR9350 Manual

AR7350/AR9350 Instruction Manual
AR7350/AR9350 Bedienungsanleitung
Manuel d’utilisation AR7350/AR9350
Manuale di istruzioni AR7350/AR9350
All instructions, warranties and other collateral documents are subject to
change at the sole discretion of Horizon Hobby, LLC. For up-to-date product
literature, visit and click on the support tab for this product.
Meaning of Special Language
The following terms are used throughout the product literature to indicate
various levels of potential harm when operating this product:
WARNING: Procedures, which if not properly followed, create the probability
of property damage, collateral damage, and serious injury OR create a high
probability of superficial injury.
CAUTION: Procedures, which if not properly followed, create the probability
of physical property damage AND a possibility of serious injury.
NOTICE: Procedures, which if not properly followed, create a possibility of
physical property damage AND a little or no possibility of injury.
ARNING: Read the ENTIRE instruction manual to become familiar
with the features of the product before operating. Failure to operate
the product correctly can result in damage to the product, personal
property and cause serious injury.
This is a sophisticated hobby product. It must be operated with caution and
common sense and requires some basic mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or
damage to the product or other property. This product is not intended for use
by children without direct adult supervision. Do not attempt disassembly, use
with incompatible components or augment product in any way without the
approval of Horizon Hobby, LLC. This manual contains instructions for safety,
operation and maintenance. It is essential to read and follow all the instructions and warnings in the manual, prior to assembly, setup or use, in order to
operate correctly and avoid damage or serious injury.
Age Recommendation: Not for children under 14 years. This is not a toy.
Always purchase from a Horizon Hobby, LLC authorized dealer to ensure
authentic high-quality Spektrum product. Horizon Hobby, LLC disclaims
all support and warranty with regards, but not limited to, compatibility and
performance of counterfeit products or products claiming compatibility with
DSM or Spektrum.
NOTICE: This product is only intended for use with unmanned, hobby-grade,
remote-controlled vehicles and aircraft. Horizon Hobby disclaims all liability outside
of the intended purpose and will not provide warranty service related thereto.
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AR7350/AR9350 Instruction Manual
The AR7350 full range 7-channel receiver features DSM® technology and is compatible
with all Spektrum™ and JR® aircraft radios that support DSM2® and DSMX® technology.
The AR9350 full range 9-channel receiver features DSM® technology and is compatible
with all Spektrum™ and JR® aircraft radios that support DSM2® and DSMX® technology.
• 7-Channel/9-Channel Full Range Receiver with integrated AS3X® technology
• Integrated telemetry
• Two X-Bus ports
• Programmable from mobile devices or PC
• Three gyro modes: Off, Rate Mode and Heading Hold
• Assignable channel outputs
Full range aircraft using up to 7 channels/9 channels. Not for use in helicopters
or aircraft with full carbon fiber fuselages.
Type: DSM Full Range Receiver
Channels: 7/9
Modulation: DSM2, DSMX
Dimension (WxLxH): 2.1 x 1.15 x 0.55 in (53.5 x 29.1 x 14.1mm)
Weight: 0.93 oz (26.5 g) main receiver
Input Voltage Range: 3.5–12V
Resolution: 2048
Compatibility: All DSM2 and DSMX Aircraft Transmitters and Module Systems
The AR7350/AR9350 receiver must be bound to the transmitter before it will
operate. Binding is the process of teaching the receiver the specific code of the
transmitter so it will only connect to that specific transmitter.
1. Connect at least one remote receiver to the main receiver.
2. Insert the bind plug in the BIND port on the receiver.
3. Power the receiver through any open channel port. The orange LED on the
receiver flashes, indicating the receiver is in bind mode. NEVER power the
receiver through a telemetry port.
4. Put the transmitter in bind mode. Binding is complete when the orange LED
on the receiver is solid.
5. Remove the bind plug from the BIND/PROG port on the receiver before you
power off the transmitter and store it in a convenient place.
NOTICE: Remove the bind plug to prevent the system from entering bind
mode the next time the power is turned on.
6. After you set up your model, always rebind the transmitter and receiver to
set the desired failsafe positions.
Antenna Polarization
For optimum RF link performance it’s important that the antennas be mounted in
an orientation that allows for the best possible signal reception when the aircraft
is in all possible attitudes and positions. This is known as antenna polarization.
The antennas should be oriented perpendicular to each other; typically vertical
and horizontal and at different angles (see Receiver Installation below). The
remote receiver antenna should be mounted in a position perpendicular at least 2
inches away from the main receiver’s antenna using double-sided foam tape.
Using the AR7350/AR9350 Receiver With AS3X
By default, AS3X technology is turned off in AR7350/AR9350 receivers. Before
activating AS3X, you will need to properly install the receiver in the aircraft and
download the AS3X application to your mobile device.
Activating AS3X
1. Bind the transmitter and receiver.
2. Download the AS3X application from or from your mobile
device (iOS or Android).
3. Power on the transmitter and receiver.
4. Open the AS3X application.
5. Connect the interface cable to the receiver and the device.
6. Use the application to program the receiver.
7. Press “Update” in the application to save the receiver programming.
Installing the Receiver
1. You can install the receiver under the canopy or in the bottom of the
fuselage. The servo pins must point toward the nose or tail of the fuselage.
2. Connect the servo and any desired telemetry sensors to the receiver.
3. Locate a flat spot inside the fuselage where you can install the receiver. The
location must be large enough to make contact with the entire base of the
receiver case. Add or remove material in the fuselage as necessary.
4. Apply high-quality, double-sided foam tape to the receiver case and press
the receiver case against the radio tray. The receiver must be mounted
securely to prevent it from moving in flight.
Important: Y-Harnesses and Servo Extensions
When using a Y-harness or servo extensions in your installation, it’s important
to use standard non-amplified Y-harnesses and servo extensions as this can/
will cause the servos to operate erratically or not function at all. Amplified
Y-harnesses were developed several years ago to boost the signal for some older
PCM systems and should not be used with Spektrum equipment. Note that when
converting an existing model to Spektrum be certain that all amplfied Y-harnesses
and/or servo extensions are replaced with conventional non-amplified versions.
Setting the Failsafe Positions
The Receiver features two types of failsafe: SmartSafe and Preset Failsafe.
SmartSafe™ failsafe is recommended for most aircraft.
When the transmitter and receiver are turned on, the receiver connects to the
transmitter and normal control of all channels occurs. If loss of signal occurs,
SmartSafe moves the throttle channel to its preset failsafe position (low throttle)
that was set during binding. All other channels hold their last position. When the
receiver detects signal from the transmitter, normal aircraft operation resumes.
Programming SmartSafe
SmartSafe failsafe is on by default, no programming is necessary.
Preset Failsafe (Spektrum AS3X Application required)
Preset failsafe is ideal for sailplanes and is preferred by some modelers for
their glow- and gas-powered aircraft.
The Spektrum application enables you to program preset failsafe positions on
individual receiver channels. If loss of signal occurs, Preset failsafe drives the
selected servo channels to their preset failsafe positions.
You must use the Spektrum AS3X application to program Preset Failsafe.
Receiver Power Only
• With SmartSafe or Preset Failsafe, when the receiver only is turned on (no
transmitter signal is present), the throttle channel has no output, to avoid
operating or arming the electronic speed control.
• All other channels have no output until the receiver has linked to the transmitter.
Range Testing
Before each flying session and especially with a new model, it is important to
perform a range check. All Spektrum aircraft transmitters incorporate a range
testing system which, when activated, reduces the output power, allowing
a range check.
1. With the model restrained on the ground, stand 30 paces (approx. 90
feet/28 meters) away from the model.
2. Face the model with the transmitter in your normal flying position and place
your transmitter into range check mode.
3. You should have total control of the model with the button depressed at 30
paces (90 feet/28 meters).
4. If control issues exist, contact the appropriate product support department.
Advanced Range Testing
For sophisticated models that have significant conductive material in them, the
Advanced range test using a flight log is recommended. The advanced range
check will confirm that the internal and remote receivers are operating optimally
and that the installation (position of the receivers) is optimized for the specific
aircraft. This Advanced Range Check allows the RF performance of each receiver
to be evaluated and to optimize the locations of the remote receiver.
IMPORTANT: If you don’t have a telemetry-capable transmitter or an STi™ interface,
you can connect a Flight Log to the Bind/Prog port on the receiver.
1. Standing 30 paces away from the model, face the model with the transmitter in
your normal flying position.
2. Put your transmitter in range test mode. Range test mode reduces the power
output from the transmitter.
3. Have someone position the model in various orientations (nose up, nose down,
nose toward the transmitter, nose away from the transmitter, etc.).
4. Observe the telemetry on your transmitter or STi™ interface. Note any
orientations that cause higher fade or hold values. Perform this step for at least
one minute.
5. Re-position any remote receivers as necessary.
Receiver Power System Requirements
Inadequate power systems that are unable to provide the necessary minimum
voltage to the receiver during flight have become the number one cause of
in-flight failures. Some of the power system components that affect the ability
to properly deliver adequate power include:
• Receiver battery pack (number of cells, capacity, cell type, state of charge)
• The ESC’s capability to deliver current to the receiver in electric aircraft
• The switch harness, battery leads, servo leads, regulators etc.
The AR7350/AR9350 has a minimum operational voltage of 3.5 volts; it is
highly recommended the power system be tested per the guidelines below.
Recommended Power System Test Guidelines
If a questionable power system is being used (e.g. small or old battery,
ESC that may not have a BEC that will support high-current draw, etc.), it is
recommended that a voltmeter be used to perform the following tests.
The Hangar 9® Digital Servo & Rx Current Meter (HAN172) or the Spektrum
Flight Log (SPM9540) is the perfect tool to perform the test below.
Plug the voltmeter into an open channel port in the receiver and with the
system on, or simply monitor the voltage on a telemetry capable transmitter,
load the control surfaces (apply pressure with your hand) while monitoring the
voltage at the receiver. The voltage should remain above 4.8 volts even when
all servos are heavily loaded.
CAUTION: The latest generations of Nickel-Metal Hydride batteries
incorporate a new chemistry mandated to be more environmentally
friendly. These batteries, when charged with peak detection fast chargers, have
tendencies to false peak (not fully charge) repeatedly. These include all brands of
NiMH batteries. If using NiMH packs, be especially cautious when charging, making
absolutely sure that the battery is fully charged. It is recommended to use a
charger that can display total charge capacity. Note the number of mAh put into a
discharged pack to verify it has been charged to full capacity.
How QuickConnect™ Techonlogy Works
• When the receiver voltage drops below 3.5 volts the system ceases to operate.
• When power is restored the receiver immediately attempts to reconnect.
• If the transmitter was left on, the system reconnects typically in about
4/100 of a second.
QuickConnect with Brownout Detection is designed to allow you to fly safely
through most short duration power interruptions, however, the root cause of
these interruptions must be corrected before the next flight to prevent a crash.
NOTICE: If a brownout occurs in flight it is vital that the cause of the
brownout be determined and corrected.
Flight Log (SPM9540 Optional)
The Flight Log is compatible with the AR7350/AR9350. The Flight Log displays
overall RF link performance as well as the individual internal and external
receiver link data. Additionally it displays receiver voltage.
ModelMatch™ Technology
Some Spektrum and JR transmitters offer a patent pending feature called
ModelMatch. ModelMatch prevents the possibility of operating a model using
the wrong model memory, potentially preventing a crash. With ModelMatch,
each model memory has its own unique code (GUID) and during the binding
process the code is programmed into the receiver. Later, when the system is
turned on, the receiver will only connect to the transmitter if the corresponding
model memory is programmed on screen.
If at any time you turn on the system and it fails to connect, check to be sure
the correct model memory is selected in the transmitter. Please note that the
DX5e and Aircraft Modules do not have ModelMatch.
Frequently Asked Questions on Spektrum 2.4GHz
1. Q: After I’ve bound the receiver to my transmitter, which do I turn
on first when I want to fly?
A: Either one. Every DSM 2.4GHz transmitter has a GUID (Globally Unique
Identifier) code imbedded in its signal. When you bind a DSM receiver
to your transmitter, this GUID code is stored in the receiver. If you turn
the receiver on before the transmitter, you don’t have to worry about it
responding to another transmitter. The receiver will go into failsafe mode
while it waits for a signal from the transmitter with the same GUID code
it has stored. See the Receiver Power Only section for more information.
If a DSM transmitter is turned on first you can expect it to connect within
6 seconds of powering on the receiver.
2. Q: Sometimes the system takes longer to connect or doesn’t
connect at all. Why?
A: In order for a DSM system to connect, the receiver must receive a large
number of uninterrupted signal packets from the transmitter. This process
takes just a few seconds, but if the transmitter is too close to the receiver
(within 4 feet) or near reflective material (metal objects, carbon fiber
material, etc.) it may detect its own reflected 2.4GHz energy as “noise”.
This can delay or prevent connection. If this happens, make sure you are
a sufficient distance from metal objects and the receiver itself before you
power up and try again.
3. Q: Is it true that DSM systems are less tolerant of low voltage?
A: All DSM receivers require at least 3.5V to operate normally. Most servos
cease to operate below 3.8V. Using multiple high-voltage servos with an
inadequate power supply can allow voltage to momentarily drop below
3.5V. This will cause the receiver to “brown out” and reconnect. See the
QuickConnect with Brownout Detection section for more information.
4. Q: Sometimes when I power on my DSM system I notice the
receiver won’t connect and it needs to be rebound to the
transmitter. Can this happen in flight?
A: No. A DSM receiver cannot be unbound from its transmitter without
specific action by the user.
5. Q: How important is it that I test my system using a Spektrum
Flight Log?
A: All 2.4GHz signals, not just DSM, are affected by proximity to
conductive materials such as carbon fiber or metal. Few RTF and
ARF sport airplanes or helicopters use enough of these kinds of
materials for it to be an issue. If, however, you’re flying a sophisticated
model that uses a lot of conductive materials in its construction, a Flight
Log can be helpful. The information it collects when you fly will help you
determine the optimum location for your receiver(s) so you can minimize
the effects of these materials on your signal performance. For more
details on the Flight Log and how it works, visit
1-Year Limited Warranty
What this Warranty Covers - Horizon Hobby, LLC, (Horizon) warrants to the original
purchaser that the product purchased (the “Product”) will be free from defects in
materials and workmanship for a period of 1 year from the date of purchase. What is Not Covered
This warranty is not transferable and does not cover (i) cosmetic damage, (ii)
damage due to acts of God, accident, misuse, abuse, negligence, commercial use,
or due to improper use, installation, operation or maintenance, (iii) modification of
or to any part of the Product, (iv) attempted service by anyone other than a Horizon
Hobby authorized service center, (v) Product not purchased from an authorized
Horizon dealer, (vi) Product not compliant with applicable technical regulations, or
(vii) use that violates any applicable laws, rules, or regulations.
Purchaser’s Remedy
Horizon’s sole obligation and purchaser’s sole and exclusive remedy shall be that
Horizon will, at its option, either (i) service, or (ii) replace, any Product determined
by Horizon to be defective. Horizon reserves the right to inspect any and all
Product(s) involved in a warranty claim. Service or replacement decisions are
at the sole discretion of Horizon. Proof of purchase is required for all warranty
Limitation of Liability
THE POSSIBILITY OF SUCH DAMAGES. Further, in no event shall the liability of
Horizon exceed the individual price of the Product on which liability is asserted.
As Horizon has no control over use, setup, final assembly, modification or misuse,
no liability shall be assumed nor accepted for any resulting damage or injury. By
the act of use, setup or assembly, the user accepts all resulting liability. If you
as the purchaser or user are not prepared to accept the liability associated with
the use of the Product, purchaser is advised to return the Product immediately in
new and unused condition to the place of purchase.
These terms are governed by Illinois law (without regard to conflict of law
principals). This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state. Horizon reserves the right to change
or modify this warranty at any time without notice.
Questions, Assistance, and Services
Your local hobby store and/or place of purchase cannot provide warranty support
or service. Once assembly, setup or use of the Product has been started, you
must contact your local distributor or Horizon directly. This will enable Horizon
to better answer your questions and service you in the event that you may
need any assistance. For questions or assistance, please visit our website at, submit a Product Support Inquiry, or call the toll free
telephone number referenced in the Warranty and Service Contact Information
section to speak with a Product Support representative.
Inspection or Services
If this Product needs to be inspected or serviced and is compliant in the country
you live and use the Product in, please use the Horizon Online Service Request
submission process found on our website or call Horizon to obtain a Return
Merchandise Authorization (RMA) number. Pack the Product securely using a
shipping carton. Please note that original boxes may be included, but are not
designed to withstand the rigors of shipping without additional protection. Ship
via a carrier that provides tracking and insurance for lost or damaged parcels,
as Horizon is not responsible for merchandise until it arrives and is accepted at
our facility. An Online Service Request is available at http://www.horizonhobby.
com/content/service-center_render-service-center. If you do not have internet
access, please contact Horizon Product Support to obtain a RMA number along
with instructions for submitting your product for service. When calling Horizon, you
will be asked to provide your complete name, street address, email address and
phone number where you can be reached during business hours. When sending
product into Horizon, please include your RMA number, a list of the included items,
and a brief summary of the problem. A copy of your original sales receipt must
be included for warranty consideration. Be sure your name, address, and RMA
number are clearly written on the outside of the shipping carton.
NOTICE: Do not ship LiPo batteries to Horizon. If you have any issue with a
LiPo battery, please contact the appropriate Horizon Product Support office.
Warranty Requirements
For Warranty consideration, you must include your original sales receipt verifying
the proof-of-purchase date. Provided warranty conditions have been met, your
Product will be serviced or replaced free of charge. Service or replacement
decisions are at the sole discretion of Horizon.
Non-Warranty Service
Should your service not be covered by warranty, service will be completed and
payment will be required without notification or estimate of the expense unless
the expense exceeds 50% of the retail purchase cost. By submitting the item for
service you are agreeing to payment of the service without notification. Service
estimates are available upon request. You must include this request with your item
submitted for service. Non-warranty service estimates will be billed a minimum
of ½ hour of labor. In addition you will be billed for return freight. Horizon accepts
money orders and cashier’s checks, as well as Visa, MasterCard, American
Express, and Discover cards. By submitting any item to Horizon for service, you
are agreeing to Horizon’s Terms and Conditions found on our website http://www.
ATTENTION: Horizon service is limited to Product compliant in the
country of use and ownership. If received, a non-compliant Product
will not be serviced. Further, the sender will be responsible for
arranging return shipment of the un-serviced Product, through a
carrier of the sender’s choice and at the sender’s expense. Horizon
will hold non-compliant Product for a period of 60 days from
notification, after which it will be discarded.
Warranty and Service Contact Information
Country of
Horizon Hobby
Contact Information
United States
of America
Horizon Service Center
(Repairs and Repair
Horizon Product Support
(Product Technical
Horizon Technischer
Sales: Horizon Hobby
+49 (0) 4121 2655
4105 Fieldstone Rd
Champaign, Illinois,
61822 USA
Hanskampring 9
D 22885 Barsbüttel,
FCC Information
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to
which the receiver is connected.
This device complies with part 15 of the FCC rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including
interference that may cause undesired operation.
NOTICE: Modifications to this product will void the user’s authority to operate this
This product contains a radio transmitter with wireless technology which has been
tested and found to be compliant with the applicable regulations governing a radio
transmitter in the 2.400GHz to 2.4835GHz frequency range.
Antenna Separation Distance
When operating your Spektrum transmitter, please be sure to maintain a
separation distance of at least 20 cm between your body (excluding fingers,
hands, wrists, ankles and feet) and the antenna to meet RF exposure safety
requirements as determined by FCC regulations.
IC Information
This device complies with Industry Canada license-exempt RSS standard(s). Operation
is subject to the following two conditions: (1) this device may not cause interference,
and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
EU Compliance Statement:
Horizon Hobby, LLC hereby declares that this product is in
compliance with the essential requirements and other relevant provisions
of the RED Directive.
A copy of the EU Declaration of Conformity is available online at:
Instructions for Disposal of WEEE by Users in the European
This product must not be disposed of with other waste. Instead, it
is the user’s responsibility to dispose of their waste equipment by handing it
over to a designated collection point for the recycling of waste electrical and
electronic equipment. The separate collection and recycling of your waste
equipment at the time of disposal will help to conserve natural resources and ensure
that it is recycled in a manner that protects human health and the environment. For more
information about where you can drop off your waste equipment for recycling, please
contact your local city office, your household waste disposal service or where you
purchased the product.
© 2018 Horizon Hobby, LLC
DSM, DSM2, DSMX, QuickConnect, ModelMatch, STi, Hangar 9, AS3X, SmartSafe and the Horizon
Hobby logo are trademarks or registered trademarks of Horizon Hobby, LLC.
The Spektrum trademark is used with permission of Bachmann Industries, Inc.
JR is a registered trademark of JR Americas. All other trademarks, service marks and logos are
property of their respective owners.
US 7,391,320. Other patents pending.
SPMAR7350 / SPMAR9350
Created 01/18
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