NiMH/LiPo Battery Support
The DX8 includes a rechargeable NiMH battery pack. A low battery alarm sounds when the battery reaches 4.3 volts. Spektrum offers an optional 2-cell LiPo battery pack (SPMB4000LPTX) for the DX8. LiPo batteries have a higher operational voltage and when switching to a 2-cell LiPo battery in the transmitter, it is important to change the low battery alarm to the LiPo setting to prevent over-discharging the pack. To Access and Change Battery Type In the System Setting screen (see page 20 in your manual) rotate the roller to select NEXT at the bottom right of the System setting screen. The following screen appears.
Rotate the roller to highlight battery type. Press the roller to access NiMH or LiPo. The low voltage cutoff will default to the recommended voltage for the battery type selected. The voltage cutoff can be adjusted from this screen, but normally the default cutoff of 6.4 volts for LiPo is recommended.
With the transmitter power turned off, plug the included 12 volt power supply into a wall outlet. Then plug the male charge plug into the charge jack. The blue LED on the front of the transmitter will illuminate. When charging the optional SPMB4000LPTX, a full charge can take up to 30hrs depending on the initial charge state of the battery. When charging a LiPo, the blue light will turn off when the charge cycle is complete.
Battery and Charging Precautions and Warnings
Failure to exercise caution while using this product and comply with the following warnings could result in product malfunction, electrical issues, excessive heat, FIRE, and ultimately injury and property damage. Read all safety precautions and literature prior to use of this product. Never allow minors to charge battery packs without adult supervision. Never drop power supply or batteries. Never attempt to charge damaged batteries N ever attempt to charge a battery pack containing different types of batteries. Never charge a battery if the cable has been pinched or shorted. N ever allow batteries or battery packs to come into contact with moisture at any time. N ever charge batteries in extremely hot or cold places (recommended between 50-80 degrees F) or place in direct sunlight. A lways disconnect the battery after charging, and let the charger cool between charges. A lways inspect a new battery before charging. A lways terminate all processes and contact Horizon Hobby if the product malfunctions. A lways keep batteries and charger away from any material that could be affected by heat (such as ceramic and tile), as they can get hot. A lways end the charging process if the charger or battery becomes hot to the touch or starts to change form (swell) during the charge process.
Transmitter Identification Mode 2

Rotate the roller to highlight F-Mode Setup then press. The following screen appears:
Highlight the Flight mode or Hold function then press to access that function. Rotate the roller to select the desired switch.

Trim Step

The Trim Step function allows servo movement adjustment per click of trim. For example you usually want a large trim step (8 to 10) for a new model. Each click of trim will have a large amount of trim travel so you can quickly adjust an out-oftrim model in flight. Later you can use a finer trim step (1-5) to adjust for precise flight. The Trim Step function allows the trims to be common or independent in each active flight mode. Many helicopter pilots use independent trims because they are automatically active when a flight mode is activated. Important: The trim step function has no effect on the overall trim travel, only the total number of clicks available. If you select a 0 value in trim step, the trim is turned off.
To Access the Trim Step Function Press and hold the roller while turning on the transmitter. When System Setup appears on the screen, release the roller. The DX8 is now in System Setup Mode.
Rotate the roller to highlight Model Reset then press to access the function. The following screen appears:
Rotate the roller to highlight Trim Setup then press to access the function. The following screen appears:
Verify that the model displayed on this screen is the model you wish to reset. If not then see page 14 Model Select to access the desired model. Rotate the roller to highlight Reset and then press to access the Confirm Reset screen.
Highlight the desired Trim value then press the roller to access. Rotate the roller to change to the desired trim value. Press to accept. Repeat to adjust all trim steps. To Access the Common or Flight Mode Trims
Highlight YES If youre sure you want to reset this model to factory default settings, press the roller. The screen will return to the main screen.

Model Copy

The Model Copy function copies the currently selected models programming of another model memory. Thirty model memories are available. Some of the more common uses of the Model Copy function include: oving the order of models around in model memory so they can be organized M by category, type, etc. Note: You will need to re-bind after moving models. xperimenting with the programming for an aircraft while preserving a copy E of the original setup. Note: If you want to use the model copy function to try two slightly different setups with the same model you will need to rebind the receiver each time you switch between model memories. opying the programming for an existing model over to a new model that C is similar. Many pilots find this to be a good way to provide more accurate baseline programming for the new model. For example Vibe 50 w/120CCPM mixing, gyro and governor programming provides a good base programming for any other nitro powered 120CCPM mixing helicopter. An Extra 300 with dual aileron and elevator servos that is properly programmed with dual flap and dual elevator mixing in Wing Type provides good foundational programming for another aerobatic airplane with the same basic control system. Important: The model memory you are copying to will be over-written by the copied programming, permanently deleting any programming that may already exist. To Access the Model Copy Function Press and hold the roller while turning on the transmitter. When System Setup appears on the screen, release the roller. The DX8 is now in System Setup Mode.

RPM (optional sensor sold separately) Two RPM sensors are available: SPMA9569 for nitro and gas engines, SPMA9558 for brushless electric motors.
Engine RPM Sensor The optional engine RPM sensor mounts inside the backplate of aircraft engines. The sensor picks up the crankpin as the engine rotates giving accurate RPM. Additionally, you can use this sensor as an RPM pickup on any rotating gear/ collar or shaft that has a steel setscrew or other magnetic metal by locating the sensor within 5 mm of the rotating steel object.
Installation Insert the temperature sensor connector into the port labeled TEMP/VOLT. The temperature sensor is now active and the actual temperature displays on screen. Note: On some engines you may need to space the sensor further away from the backplate. The sensor picks up the crankpin only; on some engines if the sensor is too close, it will not distinguish the crankpin from the crank weight. External Voltage External voltage telemetry is commonly used to monitor flight pack voltage or you can monitor ignition batteries on gas engine equipped aircraft. You can set warnings to prevent over-discharging batteries. Installation Plug the connector of the voltage sensor into the TEMP/VOLT port in the Telemetry module. Attach the opposite ends of the voltage sensor (stripped wires) to the voltage source you wish to monitor. Note the polarity (Red = + positive /Black = - Negative). Typically, you can solder the wires to the battery connector. At this point the External voltage displays on the telemetry screen. Note: A Y-harness is provided if you want to use temperature and voltage sensors simultaneously.
Installation Install the backplate sensor in the backplate. Install the connector into the RPM port in the TM1000. Testing Turn the transmitter and receiver on and scroll to the RPM telemetry screen. Rotate the engine rapidly and the RPM should register on the screen. The RED LED on the TM1000 indicates the sensor is picking up properly. You may need to adjust the sensors position to optimize the pickup. Move the sensor closer or farther away until you have a reliable RPM pickup.
Electric RPM Sensor The optional electric RPM sensor is designed to be used with any brushless motor. The sensor has two leads to attach to any two of the three motor wires. This is typically done by soldering.

Trainer

The DX8 features a programmable trainer function with three trainer modes. The transmitter assigns the trainer function to the trainer button. The function activates when the switch is depressed and one of the three trainer modes is selected. The three trainer Modes include: Inhibit I n Inhibit you can use the transmitter as a slave only. However, the slave transmitter must have the same programming as the master (e.g., servo reversing, travel adjust, sub-trim, trims). Programmable Master With Programmable Master you can program the transmitter to transfer any or all channels when you activate the trainer switch. This is ideal for beginners so the student learns control of individual channels (aileron only for example) while the trainer maintains control of all other channels. Note: When Programmable Master is selected for the master transmitter, all settings for the slave transmitter (i.e. Servo reversing, wing type, Sub trim, Travel Adjust, Mixing, etc.) must match the masters transmitter programming. If two DX8s are being used simply copy and transfer the model memory using the SD card from the masters model to the slave. The slave transmitter is then programmed to inhibit in the trainer screen. Pilot Link Master When Pilot Link Master is selected the slave transmitter has control of the stick function only (aileron, elevator rudder and throttle) while the master maintains control of all other channels and functions including D/R and switch positions. This is ideal for complex models as the master maintains control of all secondary functions and controls all other channels. Slave U se Slave mode when flying with the DX8 as a slave when the master radio has activated its Pilot Link. In this case, there is no need to match programming between the slave and master transmitter.
Installation To install the electric RPM sensor using servo tape, attach the sensor in a convenient place that allows the leads to reach the motor wires and the TM1000 telemetry unit. Solder the two sensor wires to any two motor leads. Plug the sensor lead into the RPM port on the TM1000 telemetry module. Testing Turn the transmitter and receiver on and scroll to the RPM telemetry screen. Run the motor and the RPM should register on the screen. The RED LED on the TM1000 indicates the sensor is picking up properly. NOTICE: It is necessary to program a matching pole count in the telemetry RPM screen to have accurate reading on screen. The motors pole count is normally in the motor manufacturers instructions or on the manufacturers website.

Frame Rate

The Frame Rate function allows the selection of 11ms or 22ms frame rate. When a 11ms frame rate receiver is used, the transmitter defaults to 11ms frame rate. This fast frame rate is not compatable with some types of analog servos and the Frame Rate screen allows the selection of a 22ms frame rate when a high frame rate receiver is being used with analog servos. To access the Frame rate Function Press and hold the roller while turning on the the transmitter. When system setup appears on screen relese the roller. The DX8 is now in System Setup mode. Rotate the roller to highlight Frame Rate then press. The following screen appears:

Rotate the roller to highlight Flap System then press.
channels. Do this so that when an aileron input on the transmitters stick tilts the swashplate right and left, an elevator input tilts the swashplate fore and aft, and a pitch input raises and lowers the swashplate. You synchronize the outputs with this function. Then you can adjust swashplate values positively or negatively to achieve the overall correct travel direction for aileron, elevator and pitch. To Access the Swashplate Function With the transmitter on and the main or telemetry screen displayed, press the roller. The Function list displays.
To Select a Switch The Flap System defaults to Inhibit. To activate the Flap System, rotate the roller to highlight Inhibit then press to access the switch function. Rotate the roller to the desired Flaps control switch. Press to access that screen.
Rotate the roller to highlight Swashplate then press to access.
Setting Flap and Elevator Positions Rotate the roller to select desired Flap positions value then press the roller to access that value. Now rotate to adjust the flap position value. Note: it is recommended that the flap switch position match the flap adjustment that is being adjusted. This will allow you to observe the effects of the flap adjustment.
To adjust a Swashplate Value Highlight the desired function (Aileron, Elevator or Pitch) then press the roller to access.
Repeat this for all desired Flap and elevator positions (Normal, mid and land). Adjusting the Flap Speed Rotate the roller to select Speed then press. Now rotate the roller to adjust the flap speed. Press the roller to accept. The flap speed affects the flap and elevator compensation. The flap and elevator will reach their flap positions at the same time. Rotate the roller to change the Swashplate value, noting that positive and negative values are available. Press the roller to accept. Repeat the above process for all three cyclic inputs (aileron, elevator and pitch).

Swashplate

The Swashplate screen adjusts the amount and direction of travel for the aileron, elevator and pitch functions when you activate CCPM mixing in Swash Type (see pages 15-16). This screen also allows an Expo function that compensates for the effect of the servos rotation at extremes of travel. An E-ring function also prevents servo over-travel when simultaneous extreme aileron and elevator inputs are given. Unless using a linear servo or a type of linkage that eliminates this effect, you should turn on the Expo function when any CCPM mix is enabled. Swashplate values increase or decrease the overall control travel of the selected channel. For example if you increase Pitch value, the travel of all three servos that control pitch will increase. If you increase aileron, the aileron and pitch servos will increase. Increasing or decreasing this value affects the travel of that function and not the individual servo. Note: Negative and positive swashplate values are available. To achieve the correct travel direction for Aileron, Elevator and Pitch, first use the reversing function to set the servo direction on the aileron, elevator and pitch SPEKTRUM DX8 RADIO INSTRUCTION MANUAL

To Activate the Swashplate Expo Function Rotate the roller to highlight EXPO then press to access. Spress the roller to toggle between ACT and INH.
To Activate the Swashplate E-Ring Function Highlight E-ring then press the roller to access the Electronic Cyclic Ring function.
Adjusting the Governor Values Rotate the roller to select the desired governor value. Press to access. Rotate to adjust the value. Note: the displayed value is the corrected governor value. 0% represents 1.500ms or off with most governors.

Governor

The Governor function adjusts engine rpm when using a Governor or throttle limiter. You can program up to four governor values to be selected from a variety of switches including the flight mode switch. You can adjust Governor values in.5% increments to allow for precise rpm adjustments. Also, you can program the channel the governor controls.
Repeat this for all desired governor values.

Pitch Curve

The DX8 features a 5-point Pitch curve. You can set up to four separate Pitch curves. A graph displays at the left side of the screen to aid in adjusting pitch curves. An Expo function is available that smooths out the curve. To Program Pitch Curves With the transmitter on and the main or telemetry screen displayed, press the roller. The Function list displays.
To Activate the Governor Function With the transmitter on and the main or telemetry screen displayed, press the roller. The Function list displays. Rotate the roller to highlight Governor then press to access that screen. Rotate the roller to highlight Pitch Curve then press.
To Select a Switch The Governor function defaults to Inhibit. To activate the Governor function, rotate the roller to highlight Inhibit; then, press to access the switch function. Select the desired switch to control the governor then press the roller to access the Governor screen.
Selecting a Flight Mode Highlight the desired flight mode at the top of the screen. Press the roller to select. The selected flight mode will darken to confirm the selection. N= Normal 1= Stunt 1 2= Stunt 2 H= hold
Assigning a Channel- (Output) In this screen you can assign the receiver channel the Governor is plugged into. The governor and the gyro must use two different channels. If the gyro function uses a channel, it will not appear in the governor list. Rotate the roller to highlight Ch: (channel) then press to access that function. Select the channel the governor will be plugged into. Normally Aux 2 is used.

Adjusting the Curve Move the flight mode switch in the position you wish to adjust. Rotate the roller to highlight one of the five available pitch curve values (Low, 25%, 50%,75%, High). Press to access that value.

Aileron to Rudder Mix

Use Aileron to Rudder mixing to overcome adverse yaw characteristics with certain types of aircraft such as the J3 Cub and make coordinating turns easier. To access Aileron to Rudder Mix IIf you accessed the flap option in wing type in the system setup mode, the elevator to flap mix will display. Rotate the roller to highlight ELE > FLP then press. Now rotate the roller to select Ail > RUD and press. The aileron to rudder Mix screen appears.
Repeat this for all desired points. To Activate the Expo Function Highlight EXPO then press the roller to access the Pitch Curve Expo function. Select Inh or Act to inhibit or activate the Expo function. Press the roller to accept.
Assigning Aileron to Rudder Mix to a Switch Rotate the roller to highlight Sw: at the bottom of the screen. Press the roller to access the switch select function then select the desired switch to turn on/off the aileron to rudder mix. If you select On, the mix will always be on.

Mixing

The DX8 offers eight mixes in airplane model type. There is an Elevator to Flap mix, Aileron to Rudder mix, and six user-programmable mixes that allow the mixing of any channel to any other channel. Programmable mixes include a trim offset function that adjusts the mix crossover point and a trim include function that applies the masters trim to the slave channel. You can assign Mixes to the following switches or flight modes: Inhibit- Off On - Always on Gear - Gear switch Ail - Aileron dual rate switch Ele - Elevator dual rate switch Rud - Rudder dual rate switch FM1 - Flight mode 1 FM2 - Flight mode 2 FM1, 2 - Flight mode 1 and 2 Mid - Flap switch mid position Land - Flap switch land position To Access the Mixing Functions With the transmitter on and the main or telemetry screen displayed, press the roller. The Function list displays.
Adjusting Aileron to Rudder Mix Rates Rotate the roller to highlight the rate values then press. Note that both rates are boxed. Moving the aileron stick right or left causes the right or left value only to be highlighted so you can adjust the values individually. Move the aileron stick in position to highlight the desired rates then rotate the roller to adjust the value. Note that positive + and negative - values reverse the direction of the mix. Press the roller to accept the rate.
Verify the aileron to rudder mix is working properly and in the correct direction by placing the active switch in the active position and moving the aileron stick noting the rudder position. If the rudder moves in the opposite direction than desired, the opposite value (positive vs. negative value) is needed. Note: the Elevator to Flap mix operates in the same fashion as alieron to rudder mix.

Cyclic-to-Throttle Mix Cyclic-to-throttle mix prevents rpm decay when aileron, elevator and or rudder inputs are given. This mix advances the throttle position with cyclic or rudder control to maintain rpm. At full throttle, programming prevents the throttle from overdriving the servo. Important: When using a governor, Cyclic to throttle mix is not recommended. Assigning Cyclic Mix to a Flight Mode(s) Rotate the roller to highlight the desired box at the bottom of the screen. Press the roller to darken the box and activate Cyclic Mix in that flight mode position. You can highlight more than one flight mode position. If all boxes are highlighted, the C Mix function is always on. If no boxes are highlighted, the function is always off. N= Normal 1= Stunt 1 2= Stunt 2 H= Hold M=Mix
Repeat this for all desired points. To Activate the Expo Function Rotate the roller to highlight EXPO then press to toggle between INH and ACT.
Adjusting Cyclic Mix Rates Rotate the roller to highlight the desired rate then press. Rotate the roller to adjust the value. The available positive + and negative - values reverse the direction of the throttle mix. Adjust the rates for all desired channels.
The DX8 offers eight mixes in helicopter model type. You can program a cyclicto-throttle mix to advance the throttle when aileron, elevator and or rudder inputs are given. This prevents rpm decay during cyclic and rudder inputs. A Swashplate SPEKTRUM DX8 RADIO INSTRUCTION MANUAL
To verify that Cyclic mix is working properly and in the correct direction, place the flight mode switch in one of the active positions. Move the programmed cyclic or rudder channel noting the throttle position. The throttle position should increase. If it decreases then the opposite value (positive vs. negative) is needed.
Swashplate Mix The Swashplate Mix typically corrects swashplate timing issues by mixing Aileron to Elevator and Elevator to Aileron. When adjusted correctly, the Swashplate causes the helicopter to roll and pitch accurately with minimal inter-reaction. To access Swashplate Mix With the C Mix screen displayed, rotate the roller to highlight Cyclic > Thro then press. Select Swashplate and press the roller. The Swashplate Mix screen appears.

Rotate the roller to highlight Gyro then press to access that screen.
Offset The Offset function establishes the point at which the two mix rates converge. Typically, this rate is center or 0%. If an offset is needed (normally not in a helicopter), do the following. Programming an Offset Rotate the roller to highlight Offset then press. Rotate the roller to adjust the value. Positive + and negative - values shift the offset in either direction. Press the roller to accept.
To Select a Switch The Gyro function defaults to Inhibit. To activate the Gyro function, highlight Inhibit, then press the roller to access the switch function. Rotate the roller to access the desired gyro control switch. Press the roller to access the Gyro gain screen.
Trim Include The trim include function applies trim to the slave channel when the selected master channel has trim (throttle, aileron, elevator and rudder). Typically this is used when more than one channel operates a primary control surface (dual aileron servos, etc.) With trim include activated, the master channels trim affects the slave channels trim as well. Activating Trim Include Rotate the roller to highlight Trim then press. Press the roller to toggle between INH and ACT.
Assigning a Channel- (Output) You can assign the receiver channel the gyro gain is plugged into in this screen. The governor and the gyro must use two different channels. A channel used by the governor function does not appear in the Gyro list. Highlight Ch: (channel) then press to access the gyro channel function. Select the desired channel to plug the gyro gain into, normally the Gear channel is used.
Adjusting the Rate Values Rotate the roller to select the desired gain value then press. Select the gain value. Any time a T displays, the gyro is in tail lock (Heading Lock). If an N displays, the gyro is in normal mode.
Use the Gyro function to program and adjust gyro gain. You can program up to four gyro gain values to be selected from a variety of switches including the flight mode switch. You can adjust gyro gain values in.5% increments allowing for precise gain adjustments. Also, you can program the channel the gyro gain is controlling. The DX8 displays gyro gain values as N for Normal gain and a T for tail lock (heading hold). The percentage values are the true gain values in each mode. To Activate the Gyro Gain Function With the transmitter on and the main or telemetry screen displayed, press the roller. The Function list displays. Repeat this for all desired gain values.

Federal Aviation Administration
Purpose This advisory outlines safety standards for operations of model aircraft. We encourage voluntary compliance with these standards. Background Attention has been drawn to the increase in model aircraft operation. There is a need for added caution when operating free flight and radio controlled craft in order to avoid creating a noise nuisance or a potential hazard to full-scale aircraft and persons and/or property on the surface. Operating Standards Modelers generally are concerned with safety and exercise good judgment when flying model aircraft. However, in the interest of safer skies, we encourage operators of radio controlled and free flight models to comply with the following standards: a. Exercise vigilance in locating full-scale aircraft (get help if possible) so as not to create a collision hazard. b. Select an operating site at sufficient distance from populated areas so you do not create a noise problem or a potential hazard. c. Do not fly higher than 400 feet above the surface. d. Always operate more than three miles from the boundary of an airport unless you are given permission to be closer by the appropriate air traffic control facility in the case of an airport for which a control zone has been designated or by the airport manager in the case of other airports. e. Do not hesitate to ask for assistance in complying with these guidelines at the airport traffic control tower or air route traffic control center nearest the site of your proposed operation. Information Provided By Director, Air Traffic Service Federal Aviation Administration, Washington, D.C. Daily Flight Checks 1. Check the battery voltage on both the transmitter and the receiver battery packs. Do not fly below 4.3V on the transmitter or below 9V on the receiver. To do so can crash your aircraft. Note: When you check these batteries, ensure that you have the polarities correct on your expanded scale voltmeter. 2. Check all hardware (linkages, screws, nuts, and bolts) prior to each days flight. Be sure that binding does not occur and that all parts are properly secured. 3. Ensure that all surfaces are moving in the proper manner. 4. Perform a ground range check before each days flying session. 5. Prior to starting your aircraft, turn off your transmitter, then turn it back on. Do this each time you start your aircraft. If any critical switches are on without your knowledge, the transmitter alarm will warn you at this time. 6. Check that all trim levers are in the proper location. 7. All servo pigtails and switch harness plugs should be secured in the receiver. Make sure that the switch harness moves freely in both directions.

Country of Purchase Horizon Hobby United States Horizon Service Center

Address

Phone Number/ Email 877-504-0233 productsupport@horizonhobby.com 877-504-0233 productsupport@horizonhobby.com +44 (0) 097 sales@horizonhobby.co.uk
4105 Fieldstone Rd (Electronics and engines) Champaign, Illinois 61822 USA Horizon Product Support 4105 Fieldstone Rd Champaign, Illinois (All other products) 61822 USA

United Kingdom

Horizon Hobby Limited
Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS United Kingdom Hamburger Str. Elmshorn Germany

Germany

Horizon Technischer Service

+service@horizonhobby.de

France

Horizon Hobby SAS

14 Rue Gustave Eiffel +33 (0) 70 Zone dActivit du Rveil Matin 91230 Montgeron

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 users 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. Antenna Separation Distance When operating your Spektrum transmitter, please be sure to maintain a separation distance of at least 5 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. The illustrations below show the approximate 5 cm RF exposure area and typical hand placement when operating your Spektrum transmitter.
Compliance Information for the Appendix European Union Mode Changes
The following information is for item numbers: SPM8800EU
AT IE MT SE BG IT NL SI CZ FI LT PL SK CY LU PT UK DE LV RO DK ES GR HU
The DX8 can be easily converted to mode 1, 2, 3, or 4. This conversion requires a mechanical and a programming change. (Stick and switch positions for mode 1 and 2 are illustrated on pages 8 and 9.) Following are detailed instructions on making mode changes

The following information is for item numbers: SPM88001FR
AT DK HU LV RO BG ES IE MT SE CZ FI IT NL SI CY FR LT PL SK DE GR LU PT UK

Mechanical Conversion

Mechanical conversion is required to switch between modes 1 and 2 or between modes 3 and 4. The centering spring for elevator and the friction straps for throttle must be engaged on the appropriate gimbal and throttle limiting wedges must be swapped. Step 1. Carefully pull back the rear grips and side rubber panels and unscrew the six Phillips head screws shown.
Declaration of Conformity
(in accordance with ISO/IEC 17050-1
No. HH2010080203 Product(s): Item Number(s): Equipment class: Spektrum DX8 Transmitter SPM8800EU, SPM88001FR 2 Step 2. Remove the back case noting that a wire harness connects the back to the main case. Carefully set the main case to the left side of the transmitter being careful not to damage the wire harness.
The object of declaration described above is in conformity with the requirements of the specifications listed below, following the provisions of the European R&TTE directive 1999/5/EC: EN 60950 EN 300-328 EN Safety Technical requirements for Radio equipment General EMC requirements for Radio equipment
Signed for and on behalf of: Horizon Hobby, Inc. Champaign, IL USA Steven A. Hall Aug 02, 2010 Vice President
(Cages are pictured in white for clarification. The cages in your transmitter are black.)
International Operations and Risk Management Horizon Hobby, Inc.
This product must not be disposed of with other waste. Instead, it is the users 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. SPEKTRUM DX8 RADIO INSTRUCTION MANUAL
Instructions for Disposal of WEEE by Users in the European Union
Changing Throttle Friction from One Gimbal to Another Step 3. Locate the silver throttle friction straps on both gimbals. Two straps are located on each gimbal. One strap engages a serrated section on the gimbal giving a ratcheted throttle feel while the other strap engages a smooth section on the gimbal giving a smooth friction feel.
Note: Cages have been removed for clarity. Step 4. Locate the gimbal that currently has the throttle friction engaged (mode 2 is the right gimbal from the rear). Unscrew the silver throttle tension screw until the friction strap is no longer in contact with the friction portion of the gimbal. The gimbal should now move freely. Now on the opposite gimbal locate the friction strap you desire (ratcheted or smooth). Screw in the corresponding screw until the throttle tension starts to engage.

Note: Cages have been removed for clarity. Step 6. Throttle limiting wedges are used to limit the maximum throttle travel for improved ergonomics. When switching modes that swap elevator and throttle positions the throttle limiting wedges must also be moved. Using a Phillips screwdriver, you will need to unscrew the two upper circuit boards and move these upward to access the upper inner screw of the cages. Now unscrew the eight Phillips screws that retain the cages and remove the cages.
Rotate the roller to select the desired mode then press the roller to accept the mode.
When changing modes that swap throttle and elevator positions its necessary to recalibrate the sticks. When the mode change is programmed, the calibration screen will automatically appear the next time the transmitter is turned on and the following screen appears.
Adjustable Stick Length The DX8 allows you to adjust the control sticks length. Use the included 2mm Allen wrench to loosen the setscrew by turning it counterclockwise. Then, turn the stick clockwise to shorten or counterclockwise to lengthen. After adjusting the control stick length tighten the 2mm setscrew.
To calibrate, move the sticks throughout their range then back to center including the throttle. Once all sticks have been centered, press SAVE to complete calibration.

Advanced Range Testing

For sophisticated aircraft that contain significant amounts of conductive/reflective materials (e.g., turbine-powered jets, some types of scale aircraft, aircraft with carbon fuselages, etc.), the following advanced range check is recommended. This Advanced Range Check allows you to evaluate the RF performance of each individual internal and remote receiver and optimize the locations of these receivers. Advanced Range Testing Using a Flight Log or Telemetry Module 1. Plug a flight log or the telemetry module (optional) into the data port in the receiver and turn on the system (transmitter and receiver). If using the Telemetry module, make sure its bound to the receiver. 2. Advance the Flight Log until F- frame losses are displayed, by pressing the button on the flight log. Or advance the screen on the DX8 to show the flight log telemetry. 3. Have a helper hold your aircraft while he/she observes the Flight Log data. 4. Standing 30 paces away from the model, face the model with the transmitter in your normal flying Position. Place the transmitter in the range test screen and push and hold the trainer button on top of the transmitter. 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 transmitter, nose away from the transmitter, etc.) while watching the Flight Log, or the on screen telemetry noting any correlation between the aircrafts orientation and Frame Losses. Do this for 1 minute. The timer on the DX8 can be used here. For giant-scale aircraft, tip the airplane up on its nose and rotate it 360 degrees for one minute, then record the data. Next, place the airplane on its wheels and do a second test, rotating the aircraft in all directions for one minute. 6. After one minute, release the trainer switch. A successful range check will have recorded zero frame losses. Scroll the Flight Log through the Antenna fades to evaluate the performance of each receiver. Antenna fades should be relatively uniform. If a specific antenna is experiencing a high degree of fades, then that antenna should be moved to a different location. 7. A successful Advanced test will yield the following: H- 0 holds F- 0 frame losses A, B, R, L- Antenna fades will typically be less than 100. Its important to compare the relative antenna fades. If a particular receiver has significantly higher antenna fades (2 to 3X), then the test should be redone. If the same results occur, move the offending receiver to a different location.