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
to
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.