User manual FUTABA 4EX

[. . . ] 4EX INSTRUCTION MANUAL for Futaba 4EX 4-channel, FM radio control system for aircraft Futaba Corporation Technical updates available at: http://www. futaba-rc. com Entire Contents © Copyright 2005 1M23N15601 TABLE OF CONTENTS Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Contents and specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Do not reset the model unless certainly you want flushing-out that memory and start from scratch. When actually setting up a model you should have the model in front of you with the power on so you can actually see the effects of your programming inputs and measure the control throws. REVERSE Servo Reversing The servo reversing function is used to change the direction that a servo responds to a control input from the transmitter (stick). After using the reversing function, check all the controls on the model to be certain they are operating in the correct direction and that you did not inadvertently reverse a servo other than the one intended. Reversing the wrong servo (and not checking the response of the controls before each flight) may be the most common cause of a crash!Enter the programming mode and use the MODE key to access the REVERSE function. Push the DATA INPUT lever downward to reverse the servo (REV), or push the lever upward to make the servo operate normally (NOR) for a half second. The arrow will indicate the condition of the servo (normal or reversed). In the diagram channel 1 (aileron) is "normal" (not reversed). Use the SELECT key to display other channels to be reversed. 10 E. P. A End Point Adjustment The EPA function is designed to "fine tune" the servo throws in cases where changing the pushrod hookup will not achieve the correct throw. The pushrods should first be connected to the servo arms and control horns so the correct, or near correct control surface throw will be achieved. THEN the EPAs may be used to make small changes in the servo throw until the desired control throw is achieved. The control throws should be set up so that the "end points" are as near to 100% as possible. If the EPA values must be set below 70% or above 120% to get the desired throw, you should strongly consider changing the pushrod connections so the values can be set closer to 100%. (When the EPA is set to 100% the maximum servo throw for channels 1, 2, 3 & 4 is approximately 40 °) at 100% To set the end points: 1-4ch; 40° 1. Enter the programming mode and use the MODE key to access the "EPA" screen. To change the RIGHT aileron throw move the aileron stick to the right, then push the DATA 40-140% 1-4ch; 55° INPUT lever up or down to change the value and the throw. Move the stick to the left and use the DATA INPUT lever to change the LEFT aileron throw. Use the SELECT key to display the other channels and set the other end points. Notice that moving the stick from one end to the other changes the value displayed and the position of the arrow for that "end" of the control input. Trim Settings/Trim Memory Function There are four trim levers ("trims") on the front of the transmitter. The intended use of the trims is to make small servo adjustments, in flight, to get the model properly "trimmed" (so it will fly straight-and-level). Operate the controls to make sure the servos respond in the correct direction. Place the servo arms on the servos so they are perpendicular to the pushrods (see page 5). [. . . ] The data sheets will serve as a backup in case a program is ever lost or inadvertently reset, or in case you have to intentionally reset a program to make room for another model. 16 MODEL DATA RECORDING SHEET (Make copies before using) Model name: Model No. 1·2·3·4 Wing Mixing Inh · EL · v CH 1 N·R % % MENU FUNCTION REVERSE Servo Reverse CH 2 N·R % % % CH 3 N·R % % CH 4 N·R % % % E. A End Point Adjust EXP Exponential setting % Model name: Model No. [. . . ]