4680 JR XR3i manual 7/17/02 12:14 PM Page 1 3-Channel, 4-Model Memory FM Computer Racing System
4680 JR XR3i manual 7/17/02 12:14 PM Page 2 Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . 2 XR3i Quick Start Setup . . . . . . . . . . . 3 Direct Trim Access . . . . . . . . . . . . . . 4 Servo Trim Adjustment . . . . . . . . . 4 System Features . . . . . . . . . . . . . . . . . 5 Transmitter . . . . . . . . . . . . . . . . . . . 5 Receiver . . . . . . . . . . . . . . . . . . . . . . 5 Servos . . . . . . . . . . . . . . . . . . . . . . . 5 System Specifications . . . . . . .
4680 JR XR3i manual 7/17/02 12:14 PM Page 3 XR3i Quick Start Setup Included in this manual are in-depth instructions detailing all the steps and procedures needed to correctly program each of the XR3i's features. Quick Start covers the basic programming information necessary to get you to the track fast. Later, when you want to learn more about the specific features of the XR3i, refer to the appropriate page(s) in this manual for more detailed programming information.
680 JR XR3i manual 7/17/02 12:14 PM Page 4 Direct Trim Access Servo Trim Adjustment Steering stc T R I M 0 Current Value Throttle Throttle Trim Function 0 E P A 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. 2. With the transmitter power switch on, move the digital throttle trim lever in the desired position to be adjusted.
4680 JR XR3i manual 7/17/02 12:14 PM Page 5 System Features Transmitter R-135 Receiver • 3 channels • FM modulation • Easy-to-read LCD graphics display • 4-model memory • 3-character model name entry • Electronic digital trim levers for throttle and steering • Two assignable electronic grip levers • Auxiliary third channel accessible through Grip Lever A • Direct display trim function • Servo reversing • Sub-trim • Steering dual-rate • Exponential (steering and throttle) • Steering end-point adjustme
4680 JR XR3i manual 7/17/02 12:14 PM Page 6 System Specifications Components Transmitter Receiver Servos Accessories R-135 Receiver XR3i R-135 Z590M x 1 Z270 x 1 BEC switch harness with battery case, servo accessories (for each servo), instruction manual XR3i Transmitter Model number Encoder RF output Modulation Output power Current Drain Power source Output pulse XR3i 3-channel computer system 27MHz/75MHz FM 190Mw 180mA 1.5V x 8 dry cell (1.
4680 JR XR3i manual 7/17/02 12:14 PM Page 7 Control Identification and Location Antenna Electronic Digital Throttle Trim Lever Dot Matrix Multi- Data LCD Display Steering Wheel Electronic Digital Steering Trim Lever Power Switch Three-Character Name Input Digital Voltage Reading Scroll Button = Enter Function Channel Button Decrease Button = Clear Function Increase Button Electronic Digital Grip Lever A Electronic Digital Grip Lever B Throttle Trigger Adjustable Steering Tension Grip Button C
4680 JR XR3i manual 7/17/02 12:14 PM Page 8 R/C Safety Precautions For safe and reliable performance of your R/C model, please carefully read and follow the guidelines below. 1. Radio control models are not toys. They are capable of inflicting serious injury to people and property. Use caution at all times when operating your model. 2. You are responsible for the safe operation of your R/C model. You must properly install, test and operate your model with a clear sense of that responsibility.
4680 JR XR3i manual 7/17/02 12:14 PM Page 9 Steering Tension Adjustment Charging Jack Steering tension is adjustable via the recessed screw located beneath the steering wheel (see page 7 for exact location). Turning the screw clockwise increases the steering tension. Located on the left-hand side of the transmitter is the charging jack that accepts only JR 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 10 Receiver/Servo Connections and Installation Your R-135 receiver is equipped with Battery Eliminator Circuitry (BEC). The receiver gets its power from the model’s Ni-Cd battery pack, thus saving the weight of an additional receiver battery. Ni-Cd batteries from 4.8–8.4V (4–7 cells) can be used safely. Higher voltage packs may damage the receiver and servos.
4680 JR XR3i manual 7/17/02 12:14 PM Page 11 Operating Your Model It’s important to learn the proper sequence for switching on/off your radio system. Before Operation Switch on the transmitter, then the receiver. After Operation Switch off the receiver, then the transmitter. This ensures that you will always have a signal to the receiver and that your R/C model will not operate out of control when you turn off the transmitter.
4680 JR XR3i manual 7/17/02 12:14 PM Page 12 Display Screens Normal Display Low Battery/Lithium Battery Backup When the power switch is turned on, the LCD screen will read as shown below. This screen is referred to as the Normal Display. When the voltage of the 8 "AA" batteries drops below 9.0V, the XR3i's display screen will alternate between the Normal and Low-Battery screen (BAT), and a continuous beeping will occur, indicating that the batteries need to be replaced before further use.
4680 JR XR3i manual 7/17/02 12:14 PM Page 13 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, Frame Rate, Auxiliary Channel 3 function, Grip button C function, Data Reset or the Model Copy function as shown here on the System Mode flow chart.
4680 JR XR3i manual 7/17/02 12:14 PM Page 14 Model Select (System Mode) Model Name Entry (System Mode) The XR3i 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. The XR3i allows a three-character name to be input for each of the four models available.
4680 JR XR3i manual 7/17/02 12:14 PM Page 15 Frame Rate Select (System Mode) The Frame Rate function allows you to select one of two transmitter frame rates available: Normal "N" - the default or Fast "F". The Normal Frame Rate should be selected if you are using only non-digital servos. The Fast Frame Rate may be selected if you are using at least one digital servo. frm F Current Frame Rate Note: The Frame Rate function offers quicker response times in the “F” or Fast mode.
4680 JR XR3i manual 7/17/02 12:14 PM Page 16 Auxiliary Channel 3 Function Select (System Mode) The Auxiliary Channel 3 function of the XR3i allows you to select from two 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 0 function be selected for most applications.
4680 JR XR3i manual 7/17/02 12:14 PM Page 17 Grip Button C Function Select (System Mode) The Grip Button C function of the XR3i allows you to select from 3 different functions available. Use the information below to select the correct Grip Button C assignment for your particular installation. gbc LA Grip Button Function EB = The Eb or Emergency Steering Button function is designed to override the value of Grip Dial B and provide 100% steering rate.
4680 JR XR3i manual 7/17/02 12:14 PM Page 18 Accessing the Grip Button C Function Press and hold the Scroll and Channel ENTER keys at the same time SCROLL CHANNEL to enter the System Mode. Next Press the Scroll key until "GBC" appears. Press the Increase or Decrease key to CLEAR select the desired INCREASE DECREASE Grip Button C function type to be used. 0 = Inhibited Eb = Emergency Steering Button LA = Lap-Timer 18 1. Press the Scroll and Channel keys at the same time and hold. 2.
4680 JR XR3i manual 7/17/02 12:14 PM Page 19 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. Before using the Data Reset function, it is 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 14.
4680 JR XR3i manual 7/17/02 12:14 PM Page 20 Copy Model Data (System Mode) The Copy Model Data function allows you to copy the current model data into the model memory of the blinking model selected. Before using the Copy Model Data function, be sure you know what model number you want to copy the data to as all data in this selected model will be lost. If the current model being copied from uses the default name, the model name from the model being copied to will be retained.
4680 JR XR3i manual 7/17/02 12:14 PM Page 21 Accessing the Function Mode To enter the Function mode, it is necessary to first turn on the transmitter's power switch. Next, press the Scroll key until a beep is heard. The display will change to show the first function listed on the Function mode flow chart as shown below. Press the Scroll key to scroll down through the functions one by one, as shown in the flow chart.
4680 JR XR3i manual 7/17/02 12:14 PM Page 22 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 23 Exponential (Function Mode) The Exponential feature of the XR3i 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 24 End-Point Adjustment (Function Mode) The End-Point Adjustment feature of the XR3i 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 25 Accessing The End-Point Adjustment Function Press the Scroll key until "EPA" appears on the screen ENTER SCROLL CHANNEL Press the Channel key to select the channel to be adjusted 5. Move the steering wheel, trigger or Grip Button C in the desired direction for adjustment (left/right, forward/reverse or brake). Press the Increase or Decrease key to achieve the desired amount of travel.
4680 JR XR3i manual 7/17/02 12:14 PM Page 26 Programmable Mixing (Function Mode) The XR3i offers two different mixing adjustments that allows 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 27 Lap-Timer (Function Mode) The Lap-Timer function of the XR3i 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 28 Sub-Trim (Function Mode) The Sub-Trim function of the XR3i 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 29 Servo Reversing (Function Mode) The Servo Reversing feature of the XR3i is a very convenient feature when setting up a new model. The purpose of the servo reversing function is to change the direction of the servo rotation in relation to the wheel/trigger movement. The Servo Reversing function is available for the steering, throttle and Auxiliary Channel 3 of the XR3i.
4680 JR XR3i manual 7/17/02 12:14 PM Page 30 Accessing the Direct Trim Mode The Direct Mode function of the XR3i 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. stc T R I M Steering Trim (page 31) 0 To access the Direct Trim Mode function, turn on the transmitter power switch.
4680 JR XR3i manual 7/17/02 12:14 PM Page 31 Steering Trim (STC) The XR3i 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 24) remain completely independent from the steering trim, unless the trim value exceeds the selected end-point values.
JR XR3i manual 7/17/02 12:14 PM Page 32 Throttle Trim (THC) The XR3i'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 24) remain completely independent from the throttle trim, unless the trim value exceeds the selected end-point values.
4680 JR XR3i manual 7/17/02 12:14 PM Page 33 Grip Lever B: Steering Dual-Rate Trim Adjustment (STG) The Steering Dual-Rate 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.
4680 JR XR3i manual 7/17/02 12:14 PM Page 34 Grip Lever A: Brake End-Point Adjustment BRK/Auxiliary Channel 3 Access Brake End-Point Adjustment 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).
4680 JR XR3i manual 7/17/02 12:14 PM Page 35 Auxiliary Channel 3 Access (Fuel Mixture) Auxiliary Channel 3 Access (Transmission Shift Selector) When selected, Grip Lever A can be used to access the Auxiliary Channel 3 function of the XR3i for use as a fuel mixture channel.
4680 JR XR3i manual 7/17/02 12:14 PM Page 36 XR3i Data Sheet System Mode MODEL NUMBER 1 2 3 4 MODEL NAME FRAME RATE N/F AUX FUNCTION O/2P/LN GRIP BUTTON C O/Eb/LA Function Mode STEERING THROTTLE THROTTLE DEADBAND EXPONENTIAL __________% AUX F__________% B__________% F__________% B__________% END-POINT ADJUSTMENT L__________ R__________ F__________ MIXING L__________% R__________% F__________% B__________ L__________ R__________ B__________% SUB-TRIM SERVO REVERSING REV/N
4680 JR XR3i manual 7/17/02 12:14 PM Page 37 XR3i Data Sheet System Mode MODEL NUMBER 1 2 3 4 MODEL NAME FRAME RATE N/F AUX FUNCTION O/2P/LN GRIP BUTTON C O/Eb/LA Function Mode STEERING THROTTLE THROTTLE DEADBAND EXPONENTIAL __________% AUX F__________% B__________% F__________% B__________% END-POINT ADJUSTMENT L__________ R__________ F__________ MIXING L__________% R__________% F__________% B__________ L__________ R__________ B__________% SUB-TRIM SERVO REVERSING REV/N
4680 JR XR3i manual 7/17/02 12:14 PM Page 38 Frequency Chart FREQUENCY CHART FREQUENCY (MHZ) CHANNEL 26.995 ..........................1 27.045 ..........................2 27.095 ..........................3 27.145 ..........................4 27.195 ..........................5 27.255 ..........................6 75.410 ........................61 75.430 ........................62 75.450 ........................63 75.470 ........................64 75.490 ........................65 75.510 .................
4680 JR XR3i manual 7/17/02 12:14 PM Page 39 Warranty and Service Information Note: Be sure to keep your original dated sales receipt in a safe place as you will be required to provide proof of purchase date for the equipment to be serviced under warranty. Warranty Coverage Your new JR Remote Control Radio System is warranted to the original purchaser against manufacturer defects in material and workmanship for 3 years from the date of purchase.
4680 JR XR3i manual 7/17/02 12:14 PM Page 40 4 944013 001271 JRPM127 Copyright 2002 Horizon Hobby, Inc.
