® ® 3-Channel, 4-Model Memory DSM Racing System
Table of Contents Alternate Languages........................................................................................................ 2 Introduction.................................................................................................................... 3 DX3.0 Quick Start Setup................................................................................................. 3 Direct Trim Access............................................................................................
Introduction Thank you for purchasing Spectrum’s DX3.0 radio system. The DX3.0 is designed to provide R/C racers with a bulletproof 2.4GHz spread spectrum radio link. With the DX3.0 DSM system you’ll no longer have to wait for a frequency clip, worry about radio interference from noisy motors or ESCs or be concerned that someone may turn on a radio on your channel causing interference. In addition, the DX3.
Servo Reversing st – – DX3.0 Quick Start Setup (continued) REV • NORM Indicates Current Channel ST = Steering TH = Throttle AUX = Auxiliary Channel 3 (optional) Indicates Current Servo Direction ENter SCROLL Channel CLEAR INCREASE DECREASE 1. With the transmitter power switch on, press the SCROLL key to enter the Function mode. 2. Press the SCROLL key until “REV.NORM” appears on the screen. The “ST” indicates the steering servo reversing screen. 3.
(continued) Servo Trim Adjustment TRIM Direct Trim Access STC – DX3.0 Quick Start Setup 0 TRIM THC 0 E P A R/B BRK 50 Indicates Steering Trim Function Indicates Current Value Indicates Throttle Trim Function Indicates Current Value Brake Function Indicates Current Value Steering: 1. With the transmitter power switch on, move the digital steering trim lever in the desired position to be adjusted. The steering trim value screen will appear automatically. Throttle: 2.
DX3.0 with Digital Spectrum Modulation The DSM® system operates in the 2.4GHz band (that’s 2400MHz). This high frequency offers a significant advantage. as it’s well out of the range of model-generated radio interference (like motor and ESC noise). All the complex issues that now exist using 27 and 75MHz radios with model-generated interfering noise are eliminated with this system. The DSM system uses Direct Sequencing Spread Spectrum modulation to generate a wide signal on a single frequency.
Binding (continued) 4. With the transmitter off, place the transmitter steering wheel, throttle trigger and auxiliary channels in their desired fail-safe positions (normally brake and straightahead steering). Bind Button 5. Press and hold the bind button on the transmitter while turning on the transmitter. 6. Release the bind button after the green LED flashes.
System Features • DSM 2.
Control Identification and Location Antenna Multidata LCD Display Three Character Name Input Electronic Digital Steering Trim Lever Digital Voltage Reading Channel Button Enter Function Mode Button Power Switch Increase Button Clear Function Decrease Button Steering Wheel Electronic Digital Throttle Trim Lever Throttle Trigger Electronic Digital Grip Lever A (Access to Third Channel) Grip Button C Adjustable Steering Tension Electronic Digital Grip Lever B Charge Jack Battery cover * (8 “AA” Bat
Charging Jack Located on the left-hand side of the transmitter is the charging jack, which accepts only JR® or Spektrum style wall chargers. Please do not attempt to use any other brand of wall charger as it may be reverse polarity and can cause damage to your system. Only use the JR or Spektrum type wall charger when the DX3.0 is equipped with Ni-Cd batteries.
Receiver Connections and Installation Note: When using a separate Ni-Cd receiver battery as a power source, the operating voltage range is 4.8–6.0V (4–5 cells) underload. Attention: Make sure the male and female connectors have the correct polarity (+/–) before connecting. Be sure to orient the servo plug correctly for proper insertion. Most electronic speed controllers are set up for Battery Eliminator Circuit (B.E.C.) operation and plug directly into your receiver.
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Display Screens Normal Display Screen When the power switch is turned on, the LCD screen will read as shown below. This screen is referred to as the Normal Display. Note: If any of the electronic trim buttons are moved while in this screen, the screen will automatically change to display the trim in use. This is called the Direct Trim Mode. For more information on the feature, please see page 7 of this manual. -- MD1 10.
Accessing the System Mode To enter the System Mode, press both the SCROLL and CHANNEL keys at the same time while turning on the transmitter power switch. By pressing the SCROLL key, you can now choose Model Select, Model Name Input, Auxiliary Channel 3, Grip Button C function, Data Reset ot the Model Copy function as shown here on the System Mode flow chart. Information for each function is located on the page number listed next to the function name on the flow chart.
Model Select (System Mode) The DX3.0 has memory for four models. This feature allows for four different models to be operated with the same transmitter (additional receivers and servos must be purchased separately) or one model with four different race setups. -- MDL I Model Select Function Model Number Accessing the Model Select Function 1. Press the SCROLL and CHANNEL keys at the same time and hold. 2. Turn the transmitter power switch on to enter System Mode. 3.
Auxiliary Channel 3 Function Select (System Mode) The Auxiliary Channel 3 function of the DX3.0 allows you to select from 2 different types of Channel 3 servo travel movements, or to inhibit the Auxiliary Channel 3 function. Use the information below to select the correct Auxiliary Channel 3 function type for your particular installation. It is suggested the O function (factory preset) be selected for most applications.
Auxiliary Channel 3 Function Select (System Mode) continued Grip Button C Function Select (System Mode) Accessing the Auxiliary Channel 3 Function LN = Linear servo movement 2P = 2-position servo movement 0 = Inhibited (Grip Dial A Braking is now activated) 1. Press the SCROLL and CHANNEL keys at the same time and hold. 2. Turn on the transmitter power switch to enter the System Mode. 3. Press the SCROLL key until “AUX” appears on the screen. 4.
Grip Button C Function Select (System Mode) continued E6 = The Eb orEmergency Steering Button function is designed to override the value of Grip Dial B and provide 100% steering rate. This feaure is useful if you have reduced the steering rate to make your vehicle easier to drive but need full steering in an emergency situation such as a collision.
Data Reset (System Mode) The Data Reset function allows you to reset all the programming in the selected model (1, 2, 3 or 4) to the factory default settings and to copy model data from one model memory to another. Before using the Data Reset function, it’s important to enter the Model Select function and check to make sure the current model number indicated (1, 2, 3 or 4) is the model to which you want to reset to the factory default settings. The Model Select function is described on page 15.
Accessing the Function Mode The Travel Adjust feature of the DX3.0 allows the maximum travel of both the steering, throttle and Channel 3 (optional) servos to be increased or decreased in each direction to achieve the exact servo movement needed. The adjustment range is from 0 % to 125%. The travel adjustment is factory set to 100% for both channels. The travel adjustment value displayed on the screen depends on the current position of the steering wheel, trigger, or trim lever to be adjusted.
Throttle Deadband (Function Mode) The throttle deadband feature is used to reduce/eliminate the dead throttle area that exists at neutral to the starting point of throttle and from neutral to the starting point of braking. This area is sometime known as deadband. As more throttle trim (also known as static brake) is applied, more of the dead trigger area right off neutral exists.
Exponential (Function Mode) The Exponential feature of the DX3.0 allows you to alter the response rate of the steering or throttle control around neutral without affecting the maximum amount of steering or throttle available. The adjustment range is from -100% to 0% (Linear) to +100%. Exponential is factory set to linear for both steering and throttle. Exponential is often used to settle down a car that is twitchy around center without giving up maximum steering response. The DX3.
End-Point Adjustment (Function Mode) The End-Point Adjustment feature of the DX3.0 allows the maximum travel of both the steering, throttle and Auxiliary Channel 3 (optional) servos to be increased or decreased in each direction to achieve the exact servo movement needed. The End-Point Adjustment range is from 0% to 125% and is factory set to 100% for both channels. The value displayed on the screen depends on the current position of the steering wheel, trigger, or trim lever to be adjusted.
Programmable Mixing (Function Mode) The DX3.0 offers two different mixing adjustments that allow for mixing one channel to another channel. The mixes available are Steering-to-Auxiliary Channel Mixing and Throttle-to-Auxiliary Channel Mixing. Each direction is independently adjustable. Popular use of this function includes 4-wheel steering and independent front and rear wheel brakes. For example, Throttle-to-Auxiliary channel mixing can be used for independent front and rear wheel brakes.
Lap Timer (Function Mode) The Lap Timer function of the DX3.0 allows the recording of individual lap times based on a 999 second up-timer. Up to 50 laps and times from 3.0 to 99.9 seconds can be stored in memory for review at a later time. The Lap Timer function will only be enabled and shown in Function mode if Grip Button C (System Mode) is set to “LA.” With the Lap Timer enabled, pressing the channel key will alternate between the Normal display screen and Up-Timer display screen.
Sub-Trim (Function Mode) The Sub-Trim function of the DX3.0 is an electronic trimming feature that allows the neutral position of the servo on either the steering, throttle or auxiliary channel (optional) to be moved, while allowing the electronic trim lever for that channel to remain in the center position. This feature is very useful as it allows the servo arm/wheel position to be moved to help with control linkage installation, eliminating the need to make mechanical linkage adjustments.
Accessing the Direct Trim Mode The Direct Trim Mode function of the DX3.0 is accessible through the use of the electronic throttle or steering trim levers, as well as the two electronic grip levers (A&B) located on the upper portion of the grip handle. This function allows for quick trim adjustment of these controls.
Steering Trim (STC) The DX3.0 electronic Steering Trim lever, located just above the steering wheel, allows the center position of the servo to be manipulated in either direction to achieve precise centering of the steering assembly. Steering Travel End-Point Adjustment values (page 23) remain completely independent from the steering trim, unless the trim value exceeds the selected end-point values.
The DX3.0’s electronic Throttle Trim lever, located to the left of the steering wheel, allows the center position of the servo to be manipulated in either direction to achieve precise centering of the throttle trigger neutral position. Throttle End-Point adjustment values (page 23) remain completely independent from the throttle trim, unless the trim value exceeds the selected end-point values.
Grip Lever B: Steering Dual Rate Trim Adjustment STG The Steering Dual Rate Trim Adjustment, located at Grip Lever B, allows the dual rate value (maximum servo travel) to be increased or decreased within a range from 100% through 20% of the total end-point value established in the steering EPA function. This function is very useful in race conditions as it allows you to custom tailor the steering radius and sensitivity for the current track conditions.
Grip Lever A: BrakeEnd-Point Adjustment BRK/Auxiliary Channel 3 Access The Brake End-Point Adjustment, located at Grip Lever A, allows the maximum servo travel on the braking side of the throttle trigger to be increased or decreased from 100% to 0% (off). This function is very useful in race conditions as it allows the racer to custom tailor the “panic” brake value to maximize the car’s braking power for the current track conditions.
Auxiliary Channel 3 Access (Fuel Mixture) When selected, Grip Lever A can be used to access the Auxiliary Channel 3 function of the DX3.0 for use as a fuel mixture channel. AUX 0 Current value When the LN (linear) Auxiliary Channel 3 function is selected, Grip Lever A can be used to change the neutral position of the servo to lean or richen the engine’s fuel mixture.
DX3.0 Data Sheet SYSTEM MODE MODEL NUMBER 1 2 3 4 MODEL NAME AUX FUNCTION 0 /2P/ LN GRIP BUTTON C 0 /Eb/ LA FUNCTION MODE STEERING THROTTLE THROTTLE DEADBAND % EXPONENTIAL AUXILIARY F %B % F %B % END-POINT ADJ.
DX3.0 Data Sheet SYSTEM MODE MODEL NUMBER 1 2 3 4 MODEL NAME AUX FUNCTION 0 /2P/ LN GRIP BUTTON C 0 /Eb/ LA FUNCTION MODE STEERING THROTTLE THROTTLE DEADBAND % EXPONENTIAL AUXILIARY F %B % F %B % END-POINT ADJ.
DX3.0 Data Sheet SYSTEM MODE MODEL NUMBER 1 2 3 4 MODEL NAME AUX FUNCTION 0 /2P/ LN GRIP BUTTON C 0 /Eb/ LA FUNCTION MODE STEERING THROTTLE THROTTLE DEADBAND % EXPONENTIAL AUXILIARY F %B % F %B % END-POINT ADJ.
DX3.0 Data Sheet SYSTEM MODE MODEL NUMBER 1 2 3 4 MODEL NAME AUX FUNCTION 0 /2P/ LN GRIP BUTTON C 0 /Eb/ LA FUNCTION MODE STEERING THROTTLE THROTTLE DEADBAND % EXPONENTIAL AUXILIARY F %B % F %B % END-POINT ADJ.
DX3.0 Data Sheet SYSTEM MODE MODEL NUMBER 1 2 3 4 MODEL NAME AUX FUNCTION 0 /2P/ LN GRIP BUTTON C 0 /Eb/ LA FUNCTION MODE STEERING THROTTLE THROTTLE DEADBAND % EXPONENTIAL AUXILIARY F %B % F %B % END-POINT ADJ.
Warranty and Service Information Spektrum® 1-Year Limited Warranty Period Horizon Hobby, Inc. guarantees this product to be free from defects in both material and workmanship for a period of 1 year from the date of purchase. Limited Warranty & Limits of Liability Pursuant to this Limited Warranty, Horizon Hobby, Inc. will, at its option, (i) repair or (ii) replace, any product determined by Horizon Hobby, Inc. to be defective. In the event of a defect, these are your exclusive remedies.
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.
® ® © 2006 Horizon Hobby, Inc. 4105 Fieldstone Road Champaign, Illinois 61822 (877) 504-0233 horizonhobby.
