4 CHANNEL F.M.
The Hitec Focus digital proportional radio control system is a highly sophisticated system that features modern solid state circuit design and components of unsurpassed reliability. The time you spend learning about your Focus from this manual will ensure that you will enjoy many years of dependable control. 1. Contents 1. Contents ....................................................................................1 2. Features & Specifications A. Transmitter B. Receiver C. Servo .......................
2. Features & specifications A. Transmitter • 4 channel P.P.M/F.M. transmitter • AMA listed 1991 F.M. system and RCMA gold stickered transmitters • High Quality precision gimbal stick with adjustable length & tension • All channel servo reversing • ATV for aileron, elevator, rudder, throttle • Trainer system • Channel 5 for gear switch • Innovative”MASTER-STUDENT” trainer cable system Operating system Module change system Power supply Current drain : 2 stick system :Internal module system :9.
3. Transmitter function A. Front 1 2 3 4 5 6 7 8 9 10 11 12 Aileron/Elevator stick in MODE II Throttle/Rudder stick in MODE II Aileron trim Elevator trim Throttle trim Rudder trim Trainer ON-OFF switch Level meter Power switch Rod antenna Neck-strap connector Recharge jack “Power switch should be off when charging” 13 14 15 16 17 18 3 Crystal Handle Aileron & elevator and rudder and throttle adjustable travel volume (A.T.V.
B. Back fig 2 4.
5. Operation & adjustment A. Control stick length & tension & trim lever adjustments Turn with a Phillips screwdriver The spring becomes stronger when the screw is turned counterclockwise The unique open-stick assembly provides fully adjustable stick tension “feel”. Turning the tension adjustment screw counter clockwise will soften (decrease the tension) the feel of the Control stick (fig 4) CP- variable resistors improve the neutral characteristics and resolution of the servo positioning.
B. Servo reverese The Focus 4 F.M. tranmitter is equiped with servo reversing on all 4 channels. ( Note: Leaving the reverse switch in the middle will cause the radio to work erratically so please make sure that the switches are all pushed to the furthest end.) C. Aileron and elevator & rudder & throttle adjustable travel volume (A.T.V.) This function adjusts the servo left and right throws on aileron and elevator and rudder and throttle. The rate setting range is 30% to 110%.
6. Installation • Connect the servos, batteries and switch harness in accordance with fig 2. Carefully • • • • • • • check to ensure that all connectors are properly seated. Turn the power switches “ON” and operate the transmitter. Observe the direction of travel of the control surfaces to see if they correspond to the control stick movement. Improper servo direction is corrected with the servo reverse switches (fig 3). Operate each servo over its entire range and check for binding of the push rods.
