XF421EX Manual

FCC ID: BRWXF421EX

Users Manual

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FCCID_97230

5-CHANNEL COMPUTER RADIO


TABLE OF CONTENTS I. INTRODUCTION 2. Connections 13 2.1 Installation Requirements 13 1. Using This Manual 4 2.2 Connections 13 2. Features 4 3. Key Input and Display 14 2.1 Transmitter Features 4 4. Battery Alarm and Display 14 2.2 Receiver Features 4 5. Input Mode and Functions 15 2.3 Servo Features 5 5.1 Normal Display 15 2.4 Servo Layout 5 5.2 Mode Types 15 3. Specifications 6 5.3 System Mode 16 3.1 System Specifications 6 5.4 Function Mode 16 3.2 Transmitter Specifications 6 6. Functions (System Mode) 17 3.3 Servo Specifications 6 6.1 Data Reset 17 3.4 Receiver Specifications 7 6.2 Model Selection 18 3.5 Charger Specifications 7 6.3 Wing Type Selection 19 3.6 Airborne Battery Pack 7 6.4 Model Name Entry 21 4. Battery Charging 8 7. Functions (Function Mode) 22 4.1 Transmitter/Receiver 8 7.1 Servo Reversing 22 4.2 Charger 8 7.2 Sub-Trim 23 5. Trainer System 9 7.3 Travel Adjustment 24 8. Data Sheet 25 II. XF421EX MANUAL 1. Transmitter Controls 10 III. IMPORTANT INFORMATION 1.1 Control Identification and Location 10 1.2 Receiver Channel Assignment/ 1. General Notes 26 Transmitter Throttle ALT 10 2. Daily Flight Checks 26 1.3 Transmitter Rear 11 3. Warranty Coverage 27 1.4 Control Stick Length Adjustment 11 4. Repair Service Instructions 27 1.5 Direct Servo Control (DSC) 12 5. Frequency Chart 28 1.6 Neck Strap Attachment 12 INTRODUCTION TO THE XF421EX RADIO SYSTEM Thank you for purchasing the JR XF421EX 5-Channel Radio It’s important that you carefully read this manual before System. This unit has been designed to provide the attempting to operate your system. Please pay particular modeler with a high quality, user friendly radio system attention to Page 9, Introduction 4.2 Charging Your that can be depended upon for years to come. XF421EX Radio System. AMA INFORMATION We strongly encourage all prospective and current R/C individuals to hold a current AMA membership prior to aircraft pilots to join the Academy of Model Aeronautics. operation of their models. For further information you can The AMA is a non-profit organization that provides contact the AMA at: services to model aircraft pilots. As an AMA member you Academy of Model Aeronautics will receive a monthly magazine entitled Model Aviation, as 5151 East Memorial Drive well as a liability insurance plan to cover against possible Muncie, IN 47302 accident or injury. All AMA charter aircraft clubs require (317) 287-1256 XF421EX MANUAL • Table of Contents 3

INTRODUCTION 1: Using This Manual 1 USING THIS MANUAL The XF421EX is a full feature introductory computer strongly recommend that you write that information radio that can be used for airplanes. down on a copy of the data sheet provided. This is to A blank data sheet is included at the end of this insure that, in the rare case of a memory failure, you manual. Once you have input all the necessary data will not lose your data. into your transmitter for a particular model, we INTRODUCTION 2: Features 2.1 TRANSMITTER FEATURES • Easy-to-read LCD screen • Throttle trim only affects idle position • 2 model memory • Two speed scrolling—Press and hold the • Trainer system compatible with most other JR appropriate button to scroll quickly or press and radios release to scroll in steps • 2 conveniently mounted programming switches • Flaperons mixing • Computer designed ergonomically styled case • Delta wing mixing • Adjustable stick length • V-tail mixing 2.2 RECEIVER FEATURES R600 Receiver limiter also prevents servos from random • The R600’s extremely compact size allows it to fit glitching when other transmitters are operating easily in limited spaces. in close proximity. • An independent laboratory ranked the R600 • The electrical circuitry in the R600 is state-of-the- receiver with JR’s patented ABC&W circuitry as art surface mount technology (SMT). These SMT one of the best receivers ever tested in terms of components draw less current, thus increasing 3IM, 2IM, adjacent channel rejection, signal-to- flying time. Flush mounting of these components noise ratio, and on-channel capture point. also reduces the risk of vibration wear and • A special “unwanted interference limiter” ignores damage. signals outside of the R600’s band width when • The R600 is compatible with all JR FM- the receiver is on and the transmitter is off. The transmitting radios. 4 XF421EX MANUAL • INTRODUCTION 1: Using This Manual / INTRODUCTION 2: Features

INTRODUCTION 2: Features continued 2.3 SERVO FEATURES 517 Servo • Ball bearing supported ouput shaft • A .03ms deadband amplifier insures accurate • An indirect drive feedback potentiometer gives neutral centering. additional protection from vibration. • Low current drain. 2.4 SERVO LAYOUT Servo Mounting Flange Servo Arm Retaining Screw Servo Arm/Horn Rubber Grommets Servo Output Shaft Servo Case Servo Eyelet Servo Lead w/Connector Servo Mounting Flange Rubber Grommets Top View XF421EX MANUAL • INTRODUCTION 2: Features 5

INTRODUCTION 3: Specifications 3.1 SYSTEM SPECIFICATIONS TYPE AIRPLANE SYSTEM NAME XF421EX TRANSMITTER BODY XF421EX RECEIVER R600 CHARGER NEC-221 AIRBORNE BATTERY 4N-600 SERVOS NES-517BBX4 ACCESSORIES Mini Switch 12" Aileron Extension Servo Accessories Instruction Manual 3.2 TRANSMITTER SPECIFICATIONS TYPE AIRPLANE MODEL NUMBER XF421EX ENCODER 5 Channel Computer System RF 50/53/72 MHz MODULATION PPM (FM) OUTPUT POWER Approximately 1 Watt CURRENT DRAIN 200mA POWER SOURCE 1.2Vx8 Nicad (9.6V) 600mah OUTPUT PULSE 1000-2000 (1500 Neutral) 3.3 SERVO SPECIFICATIONS TYPE 517BB TORQUE (oz./in.) 40.3 SPEED (sec.) .25 WEIGHT (oz.) 1.47 SIZE (in.) (W x L x H) 0.73 x 1.52 x 1.32 BB YES MOTOR 3-Pole Ferite 6 XF421EX MANUAL • INTRODUCTION 3: Specifications

INTRODUCTION 3: Specifications continued 3.4 RECEIVER SPECIFICATIONS TYPE R600 FM MODEL NUMBER NER-600 TYPE 6-Channel/FM-ABC & W/Circuitry FREQUENCY 50/53/72MHz SENSITIVITY (Microseconds) 5µs Minimum SELECTIVITY 8KHz/50dB WEIGHT (oz.) 1 oz. SIZE (in.) (W x L x H) 1.43 x 2.06 x .55 RECEIVER ANTENNA 39" For All Aircraft Frequencies 3.5 CHARGER SPECIFICATIONS TYPE AIRPLANE MODEL NUMBER NEC-211 INPUT VOLTAGE AC 100-120V OUTPUT CURRENT 50mAh Tx/50mAh Rx CHARGING TIME 15 Hours 3.6 AIRBORNE BATTERY PACK TYPE AIRPLANE MODEL NUMBER 4N-600 VOLTAGE 4.8V SIZE (in.) (W x L x H) 2.24 x 0.59 x 2.05 WEIGHT (oz.) 3.3 XF421EX MANUAL • INTRODUCTION 3: Specifications 7

INTRODUCTION 4: Battery Charging 4.1 TRANSMITTER / RECEIVER It is imperative that you fully charge both the transmitter and the receiver battery packs prior to RIGHT SIDE OF TRANSMITTER each day of flying. For the initial charge, leave the charger and batteries hooked up for 20-24 hours in order to fully charge both battery packs to peak capacity. For subsequent charges, leave the charger and batteries hooked up overnight (approximately 16 hours). CENTER The charger supplied with this system is designed to PIN IS NEGATIVE recharge your transmitter battery at a rate of 50mA. The receiver battery pack will charge at 50mA for the 600mAh battery pack. OUTSIDE IS POSITIVE Transmitter Only CHARGER PIGTAIL FOR TRANSMITTER The center pin on all JR remote control systems is BLACK TO POSITIVE negative. Therefore, the center pin on all JR chargers is negative, not positive. This is different from any other manufacturers’ chargers and radio RED TO NEGATIVE systems. Beware of improper connections based on “color code” wire leads as they do not apply CHARGER PIGTAIL FOR RECEIVER in this instance. You must make certain that the center pin of your JR transmitter is always connected to the negative voltage for correct RED–POSITIVE / BROWN–NEGATIVE / ORANGE–SIGNAL polarity hookup. 4.2 CHARGER The pilot lamps should always be on during the Do not use other manufacturers’ after-market charging operation. If they are not, check to make accessories that plug into the transmitter’s charging sure you have turned off both the transmitter and jack. If you do, any damage that results will not be receiver. covered by warranty. If you are unsure of compatibilities with your radio, seek expert advice Do not use the charger for equipment other than JR. before doing anything to avoid possible damage. The charging plug polarity may not be the same and During the charging operation, the charger’s equipment damage may result. temperature is slightly elevated. This is normal. 8 XF421EX MANUAL • INTRODUCTION 4: Battery Charging

INTRODUCTION 5: Trainer System 5 TRAINER SYSTEM The XF421EX features a built-in trainer system. The all other current JR radios that have built-in trainer transmitter can be used as either a master (trainer) or systems. An optional trainer cord is needed as a slave (trainee). The XF421EX is compatible with (JRPA130). D.S.C. TRAINER CORD INPUT TRAINER BUTTON MULTI VOLTAGE MULTI VOLTAGE TRAINER DATA INDICATOR AUX.CH. TRAINER DATA INDICATOR AUX.CH. DISPLAY DISPLAY SCROLL ENTER ENTER + INCR SCROLL ENTER ENTER + INCR CHANNEL - DECR CHANNEL - DECR ON ON OPTIONAL TRAINER CORD FUNCTION 3-4 1-4 FUNCTION 1-2 2-3 (JRPA130) FUNCTION 3-4 1-4 FUNCTION 1-2 2-3 5 CHANNEL MULTI-DATA COMPUTER DISPLAY SYSTEM 5 CHANNEL MULTI-DATA COMPUTER DISPLAY SYSTEM MASTER TX SLAVE TX POWER SWITCH ON POWER SWITCH OFF Operating the Trainer System 1. Match the servo reversing, sub-trims, travel 4. Test all the control functions on your aircraft with adjust and trims of both radios. the master radio. 2. Plug the optional trainer cord into both 5. Push the trainer button on the master transmitter transmitters. and check all the control functions with the slave 3. Turn on the master transmitter. (Note: The slave radio. radio must be left off.) XF421EX MANUAL • INTRODUCTION 5: Trainer System 9

CHAPTER 1: Transmitter Controls 1.1 CONTROL IDENTIFICATION AND LOCATION • Mode II ANTENNA LCD SCREEN THROTTLE TRIM ELEVATOR TRIM CARRYING HANDLE INPUT KEY GEAR SWITCH TRAINER SWITCH INPUT KEY THROTTLE/RUDDER STICK AILERON/ELEVATOR STICK NECK STRAP EYELET RUDDER TRIM AILERON TRIM POWER SWITCH 1.2 RECEIVER CHANNEL ASSIGNMENT/TRANSMITTER THROTTLE ALT 1. THRO Throttle Channel Transmitter Throttle ALT 2. AILE Aileron Channel The throttle ALT function makes the throttle stick 3. ELEV Elevator Channel trim active only when the throttle stick is less than 4. RUDD Rudder Channel half throttle. This gives easy, accurate idle 5. GEAR Gear Channel adjustments without affecting the high throttle position. 10 XF421EX MANUAL • CHAPTER 1: Transmitter Controls

CHAPTER 1: Transmitter Controls continued 1.3 TRANSMITTER REAR Note: Your transmitter has a 5-year lithium battery your data resets to the factory defaults, return your to protect your pre-programmed data against main transmitter to Horizon Service Center (see page 28) transmitter battery failure. If your system reads 0.0 for lithium battery replacement. volts, or has an unfamiliar display (service mode) or BATTERY CONNECTOR Use caution when disconnecting/removing the transmitter battery pack as if the connector is not properly disconnected, damage to the connector and/or the radio system can result. 1.4 CONTROL STICK LENGTH ADJUSTMENT To adjust the control stick length, use a 2mm Allen wrench to unlock the set screw located inside the SET SCREW end of the control stick. Turn the set screw counterclockwise to loosen it, then turn the knurled portion of the stick to adjust the length. Counterclockwise will lengthen the stick and clockwise will shorten it. After the control stick(s) has LOOSEN been adjusted to suit your flying style, tighten the set screw. TIGHTEN XF421EX MANUAL • CHAPTER 1: Transmitter Controls 11

CHAPTER 1: Transmitter Controls continued 1.5 DIRECT SERVO CONTROL (DSC) For proper DSC hook-up and operation: 2. The DSC function allows you to make final 1. Leave the transmitter power switch off. The adjustments to your airplane or helicopter transmitter will not transmit any radio without transmitting any radio signals. frequency (RF) in this position. Therefore, if another pilot is flying on your 2. Plug the optional DSC cord (JRPA132) into the frequency, you can still adjust your aircraft and DSC port in the rear of the transmitter. not interfere with the other aircraft. 3. The encoder section of the transmitter will now be operational and the LCD display will be lit. Note: Under no circumstances should you 4. Plug the other end of the DSC cord into the attempt to fly your aircraft with the DSC cord receiver charge receptacle. Turn on the switch plugged in! This feature is for bench checking harness. your aircraft only. Note: When installing the optional charging jack (JRPA024) be sure to hook the charging jack A - Charge Cord/DSC Receptacle receptacle securely into the switch harness B - Switch Harness Lead charge cord. C - Charger/DCS Cord Why you should use the DSC function: 1. The DSC enables you to check the control surfaces of your airplane without drawing the fully operational 200mAh from your transmitter battery pack. Instead, you will only draw 70mAh B when using the DSC function. A Note: You will need to purchase (separately) both the DSC cord (JRPA132) and the JR Deluxe Switch Harness (JRPA001) to make use of the XP652 DSC function. C 1.6 NECK STRAP ATTACHMENT There is an eye hook on the front of the transmitter so that the transmitter will be perfectly balanced when for attaching an optional neck strap (JRPA023). The a neck strap is used. eye hook is precisely positioned (see Section 1.1) 12 XF421EX MANUAL • CHAPTER 1: Transmitter Controls

CHAPTER 2: Connections 2.1 INSTALLATION REQUIREMENTS It is important to correctly install the radio system in do not impede servo travel. A stalled servo will your model. Please read and carefully follow the drain the battery pack within a few minutes. suggestions listed below. 5. Before installing servo output arms, make sure the servo is in its neutral position. 1. For added protection, wrap the Rx and the Rx 6. In the case of gas-powered model aircraft, mount Nicad in foam rubber that is at least 1/4” thick. the receiver power switch on the side of the 2. Run the Rx antenna through the fuselage and fuselage opposite the muffler to protect the make sure it is fully extended. Never cut or switch from exhaust residue. With other types of bundle your Rx antenna — this will decrease models, mount the switch in the most convenient range and performance. place. Make sure that the switch operates freely 3. Rubber servo grommets are included with your and is capable of traveling its full distance. radio system and should be installed in the servo 7. With your model sitting on the ground and the flanges. The servos should then be mounted on transmitter antenna collapsed, check that your either hardwood rails or a plywood tray with the system works at a distance of 75 to 100 feet. mounting screws provided. Do not overtighten the mounting screws. The flange of the brass If your system stops functioning at a distance that eyelets should face down (toward the wood). is shorter than listed above, please contact the 4. All servos must be able to move freely over the Horizon Service Center for further information full range of their travel. Make sure the linkages prior to flying your model. 2.2 CONNECTIONS RECEIVER BATTERY 4N-600 OFF ON GEAR ON/OFF SWITCH HARNESS (JRPA003) 2MHz RUDDER NEW ABC & W SYSTEM 6 CHANNEL RECEIVER BATT B AT T 6 CH 72MHz FM RECEIVER AUX AUX 1 1 ABC&W INTERFERENCE 7 PROTECTION SYSTEM GEAR GEAR ELEVATOR RUDD RUDD ELEV ELEV NER-226X A IAILE LE JAPAN REMOTE CONTROL CO., LTD MADE IN JAPAN THRO THRO 226X R600 RECEIVER RECEIVER AILERON ANTENNA THROTTLE XF421EX MANUAL • CHAPTER 2: Connections 13

CHAPTER 3: Key Input and Display 3 KEY INPUT AND DISPLAY Two input keys are located at the upper right and left face of the XF421EX transmitter. The keys are used to access and program the transmitter. Each key can be moved up or down using your thumbs. TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL - DECR Left button up........SCROLL — Used to advance Right button up........+INCR — Increses value or through the menus. changes setting (e.g., Reverse Left button down...CHANNEL — Used to advance Normal). through the channels or features Left button down......-DECR — Decreses value or in a given function. changes setting. (e.g., Reverse Normal). CHAPTER 4: Battery Alarm and Display 4 BATTERY ALARM AND DISPLAY When the transmitter battery drops below 9.0 volts, the display will start to flash BAT and an audible alarm will sound for 8 beeps. These warnings mean you should land your aircraft immediately. BAT FLASHING 8.9V Note: During the period that the battery alarm is flashing, the input buttons will not function. If you are currently in the function mode, the transmitter will exit automatically and return to the normal display (see Section 5.1). 14 XF421EX MANUAL • CHAPTER 3: Key Input and Display / CHAPTER 4: Battery Alarm and Display

CHAPTER 5: Input Mode and Functions 5.1 NORMAL DISPLAY When the power switch is turned on the screen will read as shown here in the MDI MODEL NAME diagram. This screen is referred to as the normal display. I0.4V BATTERY VOLTAGE 5.2 MODE TYPES The XF421EX features two type of programming Function Mode includes programming that is more paths. System Setup Mode includes programming frequently changed, sometimes at the flying field. functions that are initially adjusted when the model Function Modes include: is first set up, like selecting wing type or the model, SERVO REVERSING and is seldom accessed after the initial set up. SUB-TRIM System Modes include: TRAVEL ADJUST MODEL RESET MODEL SELECT WING TYPE MIXING V-TAIL MIXING MODEL NAME XF421EX MANUAL • CHAPTER 5: Input Mode and Functions 15

CHAPTER 5: Input Mode and Functions continued 5.3 SYSTEM MODE To enter the System Mode, press the SCROLL and +INCR buttons up simultaneously while you turn on the transmitter. You can now select RST I DATA RESET any of four system mode functions shown here in the flow chart. To Page 18 exit the System Mode, press the SCROLL and +INCR buttons simultaneously or turn off the transmitter. Press up the SCROLL button to move through the System Mode functions. Information for MDL I each function is located on the page number listed next to the MODEL SELECTION Page 19 function name. WING TYPE Programming Button Programming Button MIX WNG SELECTION FPR FLAPERON SCROLL TRAINER ENTER RST AUX.CH. ENTER + INCR OF DELTA V-TAIL Page 20–21 CHANNEL I - DECR MIX MDI MODEL NAME ENTRY ON To enter Systen Setup Mode press both programming I Page 22 Power Switch buttons up and turn on the Power Switch 5.3 FUNCTION MODE To enter the Function Mode, turn on the transmitter. Press the SCROLL and +INCR buttons up simultaneously until a beep is heard. THR - SERVO REVERSING The display will change accordingly and show the last active function. REV•NORM Page 23 Press the SCROLL button up to scroll down through the functions one by one as shown in the flowchart at left. Once the appropriate function is selected, use the CHANNEL button to select the SB-TRIM THR SUB-TRIM appropriate channel. Use the INCREASE and DECREASE buttons to adjust the values displayed on the screen. 0 Page 24 Programming Button Programming Button TRV ADJ THR TRAVEL ADJUSTMENT THR +I00 % Page 25 - TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL REV•NORM - DECR To enter Function Mode ON turn on the Power Switch Power Switch and then press both programming buttons up 16 XF421EX MANUAL • CHAPTER 5: Input Mode and Functions

CHAPTER 6: Functions (System Mode) 6.1 DATA RESET • System Mode The data reset function allows you to reset all the and select the desired model number (1 or 2) for programming in the selected model (1 or 2) to the which you want to reprogram to the factory settings. factory settings. Before using the data reset function The model selection function is described in it’s important to enter the model selection function Section 6.2. RST INDICATES DATA RESET FUNCTION MODEL NUMBER TO RESET RST TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL I - DECR In System Setup Mode Press the CHANNEL button down and press the SCROLL button up +INCR button up simultaneously until RST appears on to reset the data (a beep will sound) the screen Accessing the Data Reset Function 1. Press the SCROLL and +INCR buttons up the selected model's programming has been simultaneously and hold. reset, a beep will sound and model number 2. Turn on the transmitter to enter the momentarily disappear from the screen.) System Mode. 5. Press the SCROLL button to access the model 3. Press the SCROLL button up until RST appears select function. on the screen. 6. To exit, press the SCROLL and +INCR buttons 4. Press the CHANNEL and INCREASE buttons up simultaneously. simultaneously to reset the data. (To confirm that XF421EX MANUAL • CHAPTER 6: Functions (System Mode) 17

CHAPTER 6: Functions (System Mode) continued 6.2 MODEL SELECTION • System Mode The XF421EX has memory for two models. MDL INDICATES MODEL SELECTION FUNCTION I MODEL NUMBER 1 OR 2 MDL TRAINER AUX.CH. SCROLL ENTER ENTER + INCR I CHANNEL - DECR In System Setup Mode Press the +INCR or -DECR press the SCROLL button button to select model number 1 or 2 until MDL appears on the screen Accessing the Model Selection Function 1. Press the SCROLL and +INCR buttons up 4. Press the INCREASE or DECREASE button to simultaneously and hold. select model number 1 OR 2. 2. Turn on the transmitter to enter the 5. Press the SCROLL button to access the wing type System Mode. entry function. 3. Press the SCROLL button until MDL 6. To exit, press the SCROLL and +INCR buttons appears on the screen. up simultaneously. 18 XF421EX MANUAL • CHAPTER 6: Functions (System Mode)

CHAPTER 6: Functions (System Mode) continued 6.3 WING TYPE SELECTION • System Mode Flaperon, V-tail and Delta mixing are available for V-Tail specialty aircraft that require those functions. The V-Tail mixing requires two servos. Connect the left flaperon feature mixes flaps with ailerons so the tail servo to channel #3 (Elev) and the right tail servo ailerons can be drooped for takeoffs and landings to channel #4 (Rudd) in the receiver. Individual while still functioning fully as ailerons. V-tail mixing functions (e.g., servo reversing, sub-trims, etc.) are combines rudder and elevator for V-tail operations. available for each servo. Use sub-trims for individual The Delta wing function allows the aileron to also act neutral adjustments described in Section 7.2. V-Tail as the elevator, while retaining independent use of elevator travel is adjusted by elevator and rudder both functions. The Delta wing function allows the travel adjust. ailerons to also act as the elevator, while retaining independent use of both functions. Delta Wing Mixing Delta, or elevon mixing as it is commonly known, is Flaperon Setup the final wing mixing selection in your XF421EX. This When using flaperon mixing, two servos (one for style of aircraft also employs two wing servos. each aileron) must be used. Connect the left aileron However, in essence, there is not an elevator present. servo to channel #5 (Gear) and the right aileron servo Instead, at an elevator stick input, the two wing to channel #2 (Aile) in the receiver. Individual servos function in conjunction with one another in functions (e.g., servo reversing, sub-trims, etc.) are the same direction to create an up/down movement still available for each of the channels. Use sub-trims of the aircraft. Also, when an aileron control is given, for individual neutral adjustment. the two wing servos move in opposite directions to function as ailerons as well. INDICATES WING TYPE FUNCTION FPR = FLAPERON MIX VTL = V-TAIL OF DLT = DELTA WNG = WING TYPE SELECTION OF = OFF ON = ON TRAINER MIX AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL OF - DECR Press the SCROLL Press the CHANNEL Press the +INCR or -DECR button until MIX button to select button to turn the flaperon (FPR), Delta (DLT) WNG appears on Wing Type (WNG) or or V-tail (VTL) mixing on or off the screen V-tail (VTL) mixing Accessing the Wing Type Selection Function 1. Press the SCROLL and +INCR buttons up 4. Press the channel button to select either the simultaneously and hold. wing type (WNG) or V-tail (VTL) mode. 2. Turn on the transmitter to enter the System 5. Press the SCROLL button to access the model Mode. name function. 3. Press the SCROLL button until the MIX WNG 6. To exit, press the SCROLL and +INCR buttons appears on the screen. up simultaneously. XF421EX MANUAL • CHAPTER 6: Functions (System Mode) 19

CHAPTER 6: Functions (System Mode) continued 6.3 WING TYPE SELECTION • System Mode (continued) To Activate Flaperon (FPR) Mixing (Wing Type Mode) SCROLL TRAINER ENTER MIX WNG AUX.CH. ENTER + INCR MIX FPR OK OF CHANNEL - DECR OF = MIX OF 1. In System Setup Mode ON = MIX ON press the SCROLL button until MIX WNG appears 2. Press the +INCR button to on the screen activate Flaperon mixing To Activate Delta Wing (DLT) Mixing (Wing Type Mode) MIX WNG TRAINER SCROLL ENTER MIX AUX.CH. ENTER + INCR OK OF CHANNEL - DECR 1. In System Setup Mode press the SCROLL button until MIX WNG appears 2. Press the -DECR button to DLT DELTA WING on the screen activate Delta wing mixing MIX MIX ON ON To Activate V-Tail (VTL) Mixing MIX WNG TRAINER ENTER MIX AUX.CH. ENTER SCROLL + INCR OK OF CHANNEL - DECR 1. In System Setup Mode press the SCROLL button until 2. Press the CHANNEL 3. Next press either MIX WNG appears on the screen button once to access the V-tail mixing screen the +INCR or -DECR buttons MIX VTL ON once to activate Note: It is also possible to activate both the flaperon (FPR) V-tail mixing and V-tail functions (VTL) to work simultaneously. 20 XF421EX MANUAL • CHAPTER 6: Functions (System Mode)

CHAPTER 6: Functions (System Mode) continued 6.4 MODEL NAME ENTRY • System Mode The XF421EX allows a 3 digit name to be input for is useful to help identify different aircraft types or each of the 2 models available. The current model model setups. will be displayed in the normal display. This feature Flashing Character includes character to be adjusted MDI TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL I - DECR ACI In System Setup Mode press the SCROLL Press the CHANNEL button to select the character to be Press the +INCR or -DECR buttons to select the desired I button until MD1 appears changed (flashing) character (A-Z, 1-9, etc.) CURRENT MODEL on the screen NUMBER Accessing the Model Name Entry Function 1. Press the SCROLL and +INCR buttons up 5. To adjust the remaining 2 characters, press the simultaneously and hold. CHANNEL button until the desired character to 2. Turn on the transmitter to enter the System be adjusted is flashing. Mode. 6. Press the SCROLL button to access the 3. Press the SCROLL button until MD1 appears on modulation select function. the screen. 7. To exit, press the SCROLL and +INCR buttons 4. Press the INCREASE or DECREASE buttons to up simultaneously. select the correct letter/number for the first character (flashing). XF421EX MANUAL • CHAPTER 6: Functions (System Mode) 21

CHAPTER 7: Functions (Function Mode) 7.1 SERVO REVERSING • Function Mode Servo reversing is a very convenient function used in corresponding stick movement. Servo reversing is the setup of a new aircraft. It is used to change the available for all channels. direction of servo rotation in relation to the THR CHANNEL 1 THR : THROTTLE REV◆NORM 2 AIL : AILERON 3 ELE : ELEVATOR 4 RUD : RUDDER 5 GER : LANDING GEAR TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL - DECR Press the SCROLL Press the Press the +INCR or -DECR button until CHANNEL button button to change the servo direction REV◆NORM until the desired appears on the channel appears screen on the screen Accessing the Servo Reversing Function 1. Turn on the transmitter. 5. Press the INCREASE or DECREASE button to 2. Press the SCROLL and +INCR buttons up change the servo direction. simultaneously to enter the Function Mode. 6. Press the SCROLL button to access the sub-trim 3. Press the SCROLL button until REV NORM function. appears on the screen. 7. To exit, press the SCROLL and +INCR buttons 4. Press the CHANNEL button until the desired up simultaneously. channel appears on the screen. 22 XF421EX MANUAL • CHAPTER 7: Functions (Function Mode)

CHAPTER 7: Functions (Function Mode) continued 7.2 SUB-TRIM • Function Mode Sub-trim is an electronic trim that is available for with this radio system. Sub-trim can also allow each of the 5 channels. Sub-trim is particularly useful additional trim travel when mechanical trims do not as it allows the mechanical trim levers to be returned provide enough movement. to their neutral positions by adjusting /changing the servo’s neutral position electronically, without the Note: It is recommended to use as little sub-trim as need to mechanically adjust the specific control possible for adjustment. If more that 20–30 points linkage. This allows the same mechanical trim lever are required, is it suggested that a mechanical settings between the two models you can control linkage adjustment be performed. INDICATES THE SUB -TRIM FUNCTION CHANNEL 1 THR : THROTTLE 2 AIL : AILERON SB-TRIM THR 3 4 ELE : ELEVATOR RUD : RUDDER 5 GER : LANDING GEAR 0 SUB -TRIM VALUE ( ±125) TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL - DECR Press the SCROLL Press the Press the +INCR or -DECR button until CHANNEL button button to adjust the sub-trim value SB-TRIM until the desired appears on the channel appears screen on the screen Accessing the Sub-Trim Function 1. Turn on the transmitter. 5. Press the +INCR or -DECR button to establish 2. Press the SCROLL and +INCR buttons up the desired amount of sub-trim. simultaneously to enter the Function Mode. 6. Press the SCROLL button to access the travel 3. Press the SCROLL button until SB-Trim appears adjustment function. on the screen. 7. To exit, press the SCROLL and +INCR buttons 4. Press the CHANNEL button until the desired up simultaneously. channel appears on the screen. XF421EX MANUAL • CHAPTER 7: Functions (Function Mode) 23

CHAPTER 7: Functions (Function Mode) continued 7.3 TRAVEL ADJUSTMENT • Function Mode The amount of servo travel is adjustable for each depends on the position of the stick or switch (e.g., direction for each of the 5 channels individually. The flap switch, gear switch). This function is useful either adjustment range is from 0% to 150%. Travel to maximize control surface travel, or to reduce travel adjustment is factory set at 100% for all channels. to eliminate servo binding without the need for The travel adjustment value displayed on the screen mechanical adjustment. INDICATES THE TRAVEL ADJUSTMENT FUNCTION CHANNEL 1 THR : THROTTLE 2 AIL : AILERON TRV ADJ. THR 3 4 ELE : ELEVATOR RUD : RUDDER 5 GER : LANDING GEAR + I00% TRAVEL ADJUSTMENT VALUE SERVO OPERATING DIRECTION TRAINER AUX.CH. SCROLL ENTER ENTER + INCR CHANNEL - DECR Press the SCROLL Press the Press the +INCR or -DECR button until CHANNEL button button to adjust the travel adjustment value TRV ADJ. until the desired appears on the channel appears screen on the screen Accessing the Travel Adjustment Function 1. Turn on the transmitter. the +INCR or -DECR button to achieve the 2. Press the SCROLL and +INCR buttons up desired travel. Move the stick in the opposite simultaneously to enter the Function Mode. direction to adjust the travel in the opposite 3. Press the SCROLL button until TRV ADJ. appears direction. on the screen. 6. The same may be done for all channels. 4. Press the CHANNEL button until the desired 7. Press the SCROLL button to access the Servo channel appears on the screen. Reverse function. 5. Move the selected channel stick or switch in the 8. To exit, press the SCROLL and +INCR buttons direction that you want to adjust the travel. Press up simultaneously. 24 XF421EX MANUAL • CHAPTER 7: Functions (Function Mode)

CHAPTER 8: Data Sheet 8 DATA SHEET Model Number _____________________ Model Name ______________________ CHANNELS THRO (1) AIL (2) ELE (3) RUDD (4) GER (5) NORM NORM NORM NORM NORM REVERSE SW • • • • • REV REV REV REV REV SUB TRIM TRAVEL ADJUST + % + % + % + % + % (TRV ADJ.) + % + % + % + % + % NORM • WING TYPE FLAPERON • DELTA V-TAIL ON • OFF XF421EX MANUAL • CHAPTER 8: Data Sheet 25

IMPORTANT INFORMATION 1 GENERAL NOTES Radio controlled models are a great source of • Do not fly your model near spectators, parking pleasure. Unfortunately, they can also pose a potential areas, or at any other area that could result in hazard if not maintained and operated properly. It is injury to people or damage of property. imperative that you install your radio control system • Do not fly during adverse weather conditions. correctly. Additionally, your level of piloting Poor visibility can cause disorientation and loss competency must be high enough to ensure that you of control of your aircraft. Strong winds can cause are able to control your aircraft under all conditions. If similar problems. you are a newcomer to radio controlled flying, please seek help from an experienced pilot or your local • Do not fly unless your frequency is clear. hobby shop. Warning: Only one transmitter at a time can operate on a given frequency. If you turn on your Listed below are some safety Dos and Don’ts that transmitter while someone else is operating a must be followed by all pilots: model on your frequency, both pilots will lose • Ensure that your batteries have been properly control of their models. Only one person can use a charged prior to initial flight. given frequency at a time. It does not matter if it is • Keep track of the time that the system is turned AM, FM or PCM — only one frequency at a time. on so that you will have an idea of how long you • Do not point the transmitter antenna directly can safely operate your system. toward the model. The radiation pattern from the • Perform a ground range check prior to the initial tip of the antenna is inherently low. flight of the day. See the “Daily Flight Checks” • Do not take chances. If at any time during flight Section below for information on how to do so. you observe any erratic or abnormal operation, • Check all control surfaces prior to each takeoff. land immediately and do not resume flight until the cause of the problem has been ascertained • Use frequency flags. and corrected. 2 DAILY FLIGHT CHECKS 1. Check the battery voltage on both the transmitter • Do not extend the transmitter antenna at this and the receiver battery packs. Do not fly below time. Turn the transmitter “on.” 9.0 volts on the transmitter or below 4.7 volts on • Turn the model “on.” the receiver. To do so can cause a crash of your aircraft. • Slowly walk away from the model while moving the control surfaces. The aircraft should function Note: When you check these batteries, ensure that properly at a distance of 75–100 feet. you have the polarities correct on your expanded scale voltmeter. 5. Just prior to starting your aircraft, turn “off” your transmitter and then turn it back “on.” Do this 2. Check all hardware (linkages, screws, nuts, bolts) each time you start your aircraft. If any critical prior to each day’s flight. Be sure that binding switches are on without your knowledge, the does not occur and that everything is properly transmitter alarm will warn you at this time. secured. 6. Ensure that all trim levers are in the proper 3. Ensure that all surfaces are moving in the proper location. manner. 7. Check to be sure that all servo pigtails and switch 4. Perform a ground range check before each day’s harness plugs are secured in the receiver. Also, flying session. The range check should be as make sure that the switch harness moves follows: completely in both directions. 26 XF421EX MANUAL • IMPORTANT INFORMATION

WARRANTY AND SERVICE INFORMATION Important 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. 3 WARRANTY COVERAGE Your new JR Remote Control Radio System is damaged in a crash, or to any unit which has been warranted to the original purchaser against repaired or altered by any unauthorized agencies. manufacturer defects in material and workmanship Under no circumstances will the buyer be entitled to for one year from the date of purchase. During this consequential or incidental damages. This limited period, Horizon Service Center will repair or replace, warranty gives you specific legal rights; you also have at our discretion and at no cost to the purchaser, any other rights which may vary from state to state. As component that is found to be factory defective. This with all fine electronic equipment, do not subject warranty is limited to the original purchaser of the your radio system to extreme temperatures, humidity unit and is not transferable. or moisture. Do not leave it in direct sunlight for long periods of time. This warranty does not apply to any unit which has been improperly installed, mishandled, abused, or 4 REPAIR SERVICE INSTRUCTIONS In the event that your JR radio needs service, please 5. Include your name, mailing address, and a phone follow the instructions listed below: number where you can be reached during the business day. 1. Check all on/off switches to be sure they are off. This will speed the repair process of checking 6. Warranty Repairs. To receive warranty service, you battery condition. must include your original dated sales receipt to verify your proof-of-purchase date. Providing that 2. Return your system components only (transmitter, warranty conditions have been met, your radio will receiver, servos, etc). Do not return your system be repaired without charge. installed in a model aircraft. 7. Normal Non-Warranty Repairs. Should your repair 3. Preferably, use the original carton/packaging cost exceed 50% of the retail purchase cost, you will (molded foam container), or equivalent, to ship be provided with an estimate advising you of your your system. Do not use the system carton itself as options. a shipping carton. You should package the system carton within a sturdy shipping container using Within your letter, advise us of the payment method additional packing material to safeguard against you prefer to use. Horizon Service Center accepts damage during transit. Include complete name VISA or MasterCard. Include your card number and and address information inside the carton, as expiration date. Horizon Service Center also accepts well as clearly writing it on the outer label/return money orders. address area. 4. Include detailed information explaining your Mail your system to: operation of the system and problem(s) Horizon Service Center encountered. Provide an itemized list of equipment 4105 Fieldstone Road enclosed and identify any particular area/function Champaign, IL 61822 which may better assist our technicians in Phone: (217) 355-9511 addressing your concerns. Date your www.horizonhobby.com correspondence, and be sure your complete name and address appear on this enclosure. XF421EX MANUAL • WARRANTY AND SERVICE IMFORMATION 27

FREQUENCY CHART 5 FREQUENCY CHART 72 MHz requires no special license to operate. 50/53 MHz requires the operator to have an FCC amateur radio license (Ham). 72 MHz 72 MHz 50MHz CH.NO. FREQUENCY CH.NO. FREQUENCY CH.NO. FREQUENCY 15 72.090 36 72.510 00 50.800 16 72.110 37 72.530 01 50.820 17 72.130 38 72.550 02 50.840 18 72.150 39 72.570 03 50.860 19 72.170 40 72.590 04 50.880 20 72.190 41 72.610 05 50.900 21 72.210 42 72.630 06 50.920 22 72.230 43 72.650 07 50.940 23 72.250 44 72.670 08 50.960 24 72.270 45 72.690 09 50.980 25 72.290 46 72.710 26 72.310 47 72.730 53 MHZ 27 72.330 48 72.750 CH. NO. FREQUENCY FLAG COLOR 28 72.350 49 72.770 A1 53.100 Black/Brown 29 72.370 50 72.790 A2 53.200 Black/Red 30 72.390 51 72.810 A3 53.300 Black/Orange 31 72.410 52 72.830 A4 53.400 Black/Yellow 32 72.430 53 72.850 A5 53.500 Black/Green 33 72.450 54 72.870 A6 53.600 Black/Blue 34 72.470 55 72.890 A7 53.700 Black/Purple 35 72.490 56 72.910 A8 53.800 Black/Gray 57 72.930 58 72.950 59 72.970 60 72.990 *Channels 11–14 are not available 28 XF421EX MANUAL • FREQUENCY CHART

NOTES

NOTES


® DISTRIBUTED EXCLUSIVELY BY HORIZON HOBBY DISTRIBUTORS CHAMPAIGN, IL 61822 www.horizonhobby.com © 1999 Horizon Hobby Distributors, Inc. All Rights Reserved.


Document Created: 1999-10-11 17:54:47
Document Modified: 1999-10-11 17:54:47
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