Hi-Tec Focus 3 SS User manual

Table of Contents

1. Introduction

11. Features and Specifications

111. System Layout

IV. Setting and Operation

1. Transmitter

a. Loading Batteries b. Reading the

LED Battery Indicators c. Recharging

NiCad Batteries d. Transmitter

Antenna e. Changing Crystals

2. Installation of Receiver and

Servos

3. Transmitter, Receiver and Servo

Settings

a. Checking Operation of the Servo

b. Elevator and Rudder Servo Trim

Settings

- Trim Setting before Flight

- Trim Setting during Flight

I. Introduction

The Focus 3 Single Stick FM radio is specifically made for simple 3 channel

Electric, 112A and Sailplane applications. It was ergonomically designed to allow

the user to hold onto the transmitter with one hand, while launching the aircraft with

the other. The Focus 3 SS FM will prepare you to use radios with more advanced

features as your skill level and desire for greater challenges evolve.

II. Features and Specifications,,

1. Transmitter

- Single stick 3 channel FM proportional system

- Dual axis precision gimbal

- 3 LED battery status indicators

- Charging jack for optional NiCads

- Servo reversing for channels I and 2

- Current drain: 180mA

- V-tail or Elevon mixing function

- Proportional 3rd channel slide switch

2. Receiver

- Standard version(HFS-04MI+)

Narrow Band 5 channel (with optional "Y" harness) FM

receiver

- Feather version(Feather receiver)

Narrow Band 4 channel (with optional "Y" harness) FM

receiver

3. Servo

- High impact resin gear

- High reliability SMT circuit

Ill. System Layout

1. Transmitter

a. Loading Batteries

You may use either Alkaline "AN' size batteries or optional NiCad batteries.

(NiCads recommended) - Push the bottom battery cover in the direction of the

arrow then lift up the cover - Load 8 AA batteries (Be sure the polarity is correct) -

Reinstall battery case with installed AA batteries with connections to the top left -

NiCads should be charged before use

b. Reading the LED Battery Indicators

Full Power: Green Normal: Amber Warning: Flashing Red

With new alkaline or freshly charged NiCads, the Green light should be lit. With

use, the Green light will turn to Amber. If the Red begins to flash, operation

should

be stopped and the batteries should be recharged or replaced immediately.

c. Recharging NiCad Batteries

The Focus 3 SS FM is equipped with an external charging jack so there is no need

to remove the battery pack from the transmitter. The Hitec CG-22A or 25A are made

to charge these type of batteries overnight or for approximately 12-15 hours.

Please refer to the following diagram; check to see that the charge lights are lit after

the connection is complete. It is advisable to cycle your NiCad batteries at least once

every 5 or 6 charges. This can be done by simply turning your transmitter on with the

antenna connected and extended to let it run completely dead (Warning!!! Always

extend your antenna so as not to overload the circuitry when radio is on.), then follow

the charging method and repeat this 3 times, this will remove the memory that the

d. Transmitter Antenna

Always make sure your antenna is attached and fully extended before use otherwise

your operating range will be greatly reduced and could result in damage to your aircraft

and or injuries to yourself and others.

e. Changing Crystals

Changing crystal to avoid conflicts with other aircraft is possible where permitted.

(You

must check your local rules before doing so. For example in the US the FCC

prohibits

the changing of transmitter crystals on 72 and 27MHz). If you are allowed to change

crystals, both the transmitter and receiver crystals must be changed together. You

must

h ithi th b d i 72MH t 72MH 27MH t 27MH diff t

2. Installation of Receiver and Servos

After connecting the receiver and servos as below illustration, turn on the power

the transmitter first then turn the receiver on. (Always turn the transmitter ON first

and OFF last.) This will prevent the receiver from picking up stray signals and

~ going out of control. Now, move the controls to see if the servos are moving

properly.

3.Transmitter Receiver and Servo Settings

Now we come to the critical part as proper installation of these components

are

essential.

a. Checking Operation of the Servo

After installation of the servo and receiver into your model is complete, turn

the power "ON" the transmitter (fully extend the antenna) now turn on the

receiver.

(Note: Do not connect the linkage to the servos until the servo test procedure

is completed as unexpected movement may damage the servos or the model)

- Check to see if all servos are working properly. If not, check the

connections and/or make sure the main battery pack is charged.

- If the servos check out fine, connect the linkage to the servo horns now.

Check to see that the servos are moving in the correct direction. If not, change

the servo direction, with the reversing switches located on the back of the radio.

The 3rd channel of the Focus 3 SS FM is not reversible.

- If everything checks out then turn the receiver "OFF" first, then the

transmitter.

The Focus 3 SS FM offers an internal electronic mix for channels I and 2 to

deliver an Elevon or V-tail mix for those aircraft requiring those specific

functions.

(Always remembers to never have the receiver "ON" without the transmitter being

"ON". This means when turning your model "ON" always turn the transmitter "ON"

first and "OFF" last)

(Note: Please make sure to fold the transmitter antenna after use so as not to

get damaged or poke someone in the eyes)

Warning!!! : Do not shorten the length of the receiver antenna by cutting off

any excess wire. This will severely affect the operating range and could

result in injury to yourself and others..

b. Elevator and Rudder Servo Trim Settings

-Trim Setting before Flight

The servo trim enables minor adjustment of the servo neutral position so that the

plane will fly straight when the stick is in the center position. Before adjusting the

servo trim, please make sure that when both the stick and the servo trim is in its

center position, (1) the servo arm is perpendicular to the push rods, and (2) the

elevator and rudder of the plane is flush with the tail wing.

-Trim Setting during Flight

You may perform some minor trim adjustment during flight if the plane nose up or

down (Elevator Trim) or sideways (Rudder Trim) when the stick is in the center

position. However please keep in mind that trim adjustment is only for minor

adjustment and major adjustment should still be done through push rod (linkage)

adjustment at the model. (Note: There is no trim adjustment on the 3rd channel

of the Focus 3 SS FM)

For U.S.A.

This device complies with part 15 of the FCC rules. Operation is subject to the

following two conditions: (I) this device may not cause harmful interference, and (2)

this device must accept any interference that may cause undesired operation.

Transmitter frequencies can only be changed by an authorized Hitec RCD Inc.

service center. Changing frequencies by the consumer will void the warranty and is

a violation of FCC regulations.

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