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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, call the Spektrum Service Center in the U.S. at 1-877-504-0233 for further 

assistance. In the UK or Germany use one of the following addresses. 
 

 

European Union: +49 4121 46199 66 (Deutschland) 

 

 

 

   or email [email protected]

   

 

   

+44 (0) 1279 641 097 (United Kingdom)

 

 

 

   or email [email protected]

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.

Advanced Range Test

1.  Plug a Flight Log (SPM9540) into the data port in the AR12000 and turn on the system (Tx and Rx).

2. Advance the Flight Log until F- frame losses are displayed by pressing the button on the Flight Log.

3. Have a helper hold your aircraft while observing the Flight Log data.

4.  Standing 30 paces away from the model, face the model with the transmitter in your normal flying 

position and put your transmitter into range test mode. This causes reduced power output from the 

transmitter.

5.  Have your helper position the model in various orientations (nose up, nose down, nose toward the 

Tx, nose away from the Tx, etc.) while your helper watches the Flight Log noting any correlation 

between the aircraft’s orientation and frame losses. Do this for 1 minute. The timer on the transmitter 

 can be used here. A successful advanced test will yield the following:  

 H- 0 holds  

F- less than 10 frame losses  

 A, B, R, L- Frame losses will typically be less than 100. It’s important to compare the relative frame 

losses and if a particular receiver has a significantly higher frame loss value (2 to 3X) then the test 

should be redone and if the same results occur, move the offending receiver to a different location.

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 AR12000 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. 

   Note: 

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, 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. 

    Note:

 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.

QuickConnect

 With Brownout Detection 

Your AR12000 features QuickConnect with Brownout Detection. 

•  Should an interruption of power occur (brownout), the system will reconnect immediately when 

power is restored (QuickConnect). 

• The LED on the receivers will flash slowly indicating a power interruption (brownout) has occurred. 

•  Brownouts can be caused by an inadequate power supply (weak battery or regulator), a loose 

connector, a bad switch, an inadequate BEC when using an Electronic speed controller, etc. 

•  Brownouts occur when the receiver voltage drops below 3.5 volts thus interrupting control as the 

servos and receiver require a minimum of 3.5 volts to operate. 

 

How QuickConnect With Brownout Detection Works

• When the receiver voltage drops below 3.5 volts the system drops out (ceases to operate). 

•  When power is restored the receiver immediately attempts to reconnect to the last two frequencies 

that it was connected to. 

•  If the two frequencies are present (the transmitter was left on) the system reconnects typically 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. 

   Note:

  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 AR9000. The Flight Log displays overall RF link performance as 

well as the individual internal and external receiver link data. Additionally it displays receiver voltage.

 

Using the Flight Log

After a flight and before turning off the receiver or transmitter, plug the Flight Log into the Data port on 

the AR12000. The screen will automatically display voltage e.g. 6v2= 6.2 volts.

     Note:

 When the voltage reaches 4.8 volts or less, the screen will flash indicating low voltage.

Press the button to display the following information:

 

A – Antenna fades on internal antenna A

 

B – Antenna fades on internal antenna B

 

L – Antenna fades on the left external antenna

 

R – Antenna fades on the right external antenna

 

F – Frame loss

 

H – Holds

      

Note:

 – – – (three dashed lines) will appear if the antenna is not attached

Antenna fades

—represents the loss of a bit of information on that specific antenna.

Typically it’s normal to have as many as 50 to 100 antenna fades during a flight. If any single antenna 

experiences over 500 fades in a single flight, the antenna should be repositioned in the aircraft to

optimize the RF link.

Frame loss

—represents simultaneous antenna fades on all attached receivers. 

If the RF link is performing optimally, frame losses per flight should be less than 20. A hold occurs 

when 45 consecutive frame losses occur. This takes about one second. If a hold occurs during a flight, 

it’s important to evaluate the system, moving the antennas to different locations and or checking to be 

sure the transmitter and receivers are all working correctly.
     

Note:

  A servo extension can be used to allow the Flight Log to be plugged in more conveniently. 

On some models, the Flight Log can be plugged in, attached and left on the model using 

double-sided tape. Mounting the Flight Log conveniently to the side frame is common with 

helicopters.

 

Printed 02/09  14956

FCC Information

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.

Caution:

 Changes or modifications not expressly approved by the party responsible for 

compliance could void the user’s authority to operate the equipment.

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.

CE Compliance information for the European Union
Declaration of Conformity

(in accordance with ISO/IEC 17050-1)  

No. HH2008123101

Product(s): 

AR12000 Receiver

Item Number(s):  

SPMAR12000

The object of declaration described above is in conformity with the requirements of the specifica-

tions listed below, following the provisions of the European R&TTE directive 1999/5/EC:

EN 301 489-1 v.1.6.1  General EMC requirements for Radio equipment 

 

EN 301 489-17 v.1.2.1

Signed for and on behalf of:

 

Horizon Hobby, Inc.

 

Champaign, IL USA

 

Dec. 31, 2008

 

Steven A. Hall

 

Vice President

 

International Operations and Risk Management

 

Horizon Hobby, Inc.

© 2009 Horizon Hobby, Inc.  Spektrum radios and accessories are distributed exclusively by Horizon Hobby, Inc.   

4105 Fieldstone Road, Champaign, IL 61822  Call toll-free, 877-504-0233. 
DSM and DSM2 are trademarks or registered trademarks of Horizon Hobby, Inc.   

The Spektrum trademark is used with permission of Bachmann Industries, Inc.

US patent number 7,391,320. Other patents pending.

Inspection or Repairs

If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA). 

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. A Service Repair Request is available at www.horizonhobby.

com on the “Support” tab. If you do not have internet access, please include a letter with your complete 

name, street address, email address and phone number where you can be reached during business days, 

your RMA number, a list of the included items, method of payment for any non-warranty expenses and a 

brief summary of the problem. Your original sales receipt must also be included for warranty consideration. 

Be sure your name, address, and RMA number are clearly written on the outside of the shipping carton.

Warranty Inspection and Repairs

To receive warranty service, you must include your original sales receipt verifying the proof-of-purchase 

date. Provided warranty conditions have been met, your Product will be repaired or replaced free of charge. 

Repair or replacement decisions are at the sole discretion of Horizon Hobby. 

Non-Warranty Repairs

Should your repair not be covered by warranty the repair 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 repair you are agreeing to payment of the repair without notification. Repair 

estimates are available upon request. You must include this request with your repair. Non-warranty repair 

estimates will be billed a minimum of ½ hour of labor. In addition you will be billed for return freight. 

Please advise us of your preferred method of payment. Horizon accepts money orders and cashiers checks, 

as well as Visa, MasterCard, American Express, and Discover cards. If you choose to pay by credit card, 

please include your credit card number and expiration date. Any repair left unpaid or unclaimed after 90 

days will be considered abandoned and will be disposed of accordingly. Please note: non-warranty repair is 

only available on electronics and model engines.
Electronics and engines requiring inspection or repair should be shipped to the following address:

Horizon Service Center 

4105 Fieldstone Road 

Champaign, Illinois 61822

All other Products requiring warranty inspection or repair should be shipped to the following address:

Horizon Product Support

 

4105 Fieldstone Road 

Champaign, Illinois 61822

Please call 877-504-0233 or e-mail us at [email protected] with any questions or 

concerns regarding this product or warranty.

European Union:

 

 Electronics and engines requiring inspection or repair should be shipped to one of the following addresses:

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.
(c) Purchaser Remedy- Horizon’s sole obligation hereunder shall be that Horizon will, at its option, (i) 

repair or (ii) replace, any Product determined by Horizon to be defective. In the event of a defect, these are 

the Purchaser’s exclusive remedies. Horizon reserves the right to inspect any and all equipment involved 

in a warranty claim. Repair or replacement decisions are at the sole discretion of Horizon. This warranty 

does not cover cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence, 

commercial use, or modification of or to any part of the Product. This warranty does not cover damage due 

to improper installation, operation, maintenance, or attempted repair by anyone other than Horizon. Return 

of any goods by Purchaser must be approved in writing by Horizon before shipment.

Damage Limits

HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF 

PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT, 

WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. 

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 this Product, 

you are advised to return this Product immediately in new and unused condition to the place of purchase.

Law: These Terms are governed by Illinois law (without regard to conflict of law principals). 

Safety Precautions

This is a sophisticated hobby Product and not a toy. 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. The Product 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 injury.

Questions, Assistance, and Repairs

Your local hobby store and/or place of purchase cannot provide warranty support or repair. Once assembly, 

setup or use of the Product has been started, you must contact 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 direct your email to [email protected], or call 877.504.0233 toll 

free to speak to the Product Support department.

Horizon Hobby UK

Units 1-4 Ployters Rd

Staple Tye, Harlow

Essex CM18 7NS

United Kingdom

Please call +44 (0) 1279 641 097 or email [email protected] 

 

with any questions or concerns regarding this product or warranty.

Horizon Technischer Service

Hamburger Str. 10

25335 Elmshorn

Germany

Please call +49 4121 46199 66 or email [email protected] 

with any questions or concerns regarding this product or warranty.

Instructions for Disposal of WEEE by Users in the 

 

European Union

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. 

Tips on Using Spektrum 2.4GHz
ModelMatch

 

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.

   Note

: 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.

While your DSM equipped 2.4GHz system is intuitive to operate, functioning nearly identically to 

72MHz systems, following are a few common questions from customers.
 

1.  Q: Which do I turn on first, the transmitter or the receiver?

 

A:  

If the receiver is turned off first

 —all servos except for the throttle will be driven to their preset 

failsafe positions set during binding. At this time the throttle channel doesn’t output a pulse 

position preventing the arming of electronic speed controllers or in the case of an engine 

powered aircraft the throttle servo remains in its current position. When the transmitter is 

then turned on the transmitter scans the 2.4GHz band and acquires two open channels. 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 two 

open channels. When the receiver is then turned on for a short period (the time it takes to 

connect) all servos except for the throttle are driven to their preset failsafe positions while the 

throttle has no output pulse. The receiver scans the 2.4GHz band looking for the previously 

stored GUID and 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 fly 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 DSM 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 thus causing the entire system 

(servos and receiver) to brown out. When the voltage drops below the low voltage threshold 

(3.5 volts), the DSM receiver must reboot (go through the startup process of scanning the band 

and finding the transmitter) and this can take several seconds. Please read the receiver power 

requirement section as this explains how to test for and prevent this occurrence.

4. Q:  Sometimes my receiver loses its bind and won’t connect requiring rebinding. 

 

What happens if the bind is lost in flight?

  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 transmitter is placed 

into bind mode, the transmitter looks for the binding protocol signal from a receiver. If no signal 

is present, the transmitter no longer has the correct information to connect to a specific receiver 

and in essence the transmitter has been “unbound” from the receiver. We’ve had several DX7 

customers that use transmitter stands or trays that unknowingly depress the bind button and the 

system is then turned on losing the necessary information to allow the connection to take place. 

We’ve also had DX7 customers that didn’t fully understand the range test process and pushed the 

bind button before turning on the transmitter also causing the system to “lose its bind.”

Age Recommendation:

  14 years or over. This is not a toy. This product is not intended for use by 

children without direct adult supervision.

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