Hobbico TTX850 Users Manual
TTX850
TM
2.4GHz 8-CHANNEL
COMPUTER RADIO
INSTRUCTION MANUAL
Tactic’s TTX850 computer transmitter uses
the advanced 2.4GHz spread spectrum SLT
“Secure Link Technology” protocol for solid,
interference-free control of R/C models. A
large backlit LCD, wired and wireless trainer
systems, 30 model memories, plus advanced
programming options are just a few of the
benefits which can be used for models of all
sizes. Tactic 2.4GHz transmitters are compatible only with Tactic brand receivers and
those utilizing the SLT protocol.
™
For safe operation and
best results, it’s strongly
recommended to read
this manual in its entirety before
use! Also read and understand the
instructions included with the model.
Damage resulting from misuse or
modification will void your warranty.
TABLE OF CONTENTS
SLT TECHNOLOGY, Tx-R, AND
COMPATIBLE RECEIVERS . . . . . . . . . . . . . 3
RECEIVER INSTALLATION . . . . . . . . . . . . . . . . 3
TTX850 POWER SYSTEM . . . . . . . . . . . . . . . . . 4
Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Charge Jack and Charging
Rechargeable Batteries . . . . . . . . . . . . . . 4
Power LED. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
FLIGHT CONTROLS. . . . . . . . . . . . . . . . . . . . . . 4
Gimbal Sticks . . . . . . . . . . . . . . . . . . . . . . . . . 5
Stick Tension and Throttle Rachet. . . . . . . . . 5
Case Separation and Assembly . . . . . . . . . . 5
Digital Stick Trims . . . . . . . . . . . . . . . . . . . . . 5
Toggle Switches. . . . . . . . . . . . . . . . . . . . . . . 5
HOME SCREEN. . . . . . . . . . . . . . . . . . . . . . . . . . 6
LCD, PROGRAMMING CONTROLS,
MENU NAVIGATION. . . . . . . . . . . . . . . . . . . 6
MENUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SYSTEM SETUP . . . . . . . . . . . . . . . . . . . . . . . . . 7
User Name. . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Stick Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Speaker Volume. . . . . . . . . . . . . . . . . . . . . . . 7
Battery Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 8
Vibration Power . . . . . . . . . . . . . . . . . . . . . . . 8
Back Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MODEL SETUP MENU – AIRPLANES. . . . . . . . 8
Model Select . . . . . . . . . . . . . . . . . . . . . . . . . 8
Model Management . . . . . . . . . . . . . . . . . . . . 8
Wing Type . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Channel Assignments . . . . . . . . . . . . . . . . . 10
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Trainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Trim Step Setting . . . . . . . . . . . . . . . . . . . . . 10
SETTINGS MENU – AIRPLANES . . . . . . . . . . 11
Servo Set . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Dual-Rates, Exponential . . . . . . . . . . . . . . . 11
Ch5-Ch8 Set . . . . . . . . . . . . . . . . . . . . . . . . 12
Throttle Curve . . . . . . . . . . . . . . . . . . . . . . . 12
Throttle Cut . . . . . . . . . . . . . . . . . . . . . . . . . 13
Advanced Gyro Gain . . . . . . . . . . . . . . . . . . 14
Aileron Mixer . . . . . . . . . . . . . . . . . . . . . . . . 14
Rudder Mixer . . . . . . . . . . . . . . . . . . . . . . . . 14
Aileron Differential . . . . . . . . . . . . . . . . . . . . 14
Flap Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Air Brake Set . . . . . . . . . . . . . . . . . . . . . . . . 15
Flight Condition . . . . . . . . . . . . . . . . . . . . . . 15
Programmable Mixer . . . . . . . . . . . . . . . . . . 15
Rf Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Digital Switch Assignments . . . . . . . . . . . . . 16
MODEL SETUP MENU – HELICOPTERS . . . . 17
Swashplate Type . . . . . . . . . . . . . . . . . . . . . 17
SETTINGS MENU – HELICOPTERS . . . . . . . . 17
Throttle Curve . . . . . . . . . . . . . . . . . . . . . . . 17
Throttle Hold . . . . . . . . . . . . . . . . . . . . . . . . 18
Pitch Curve . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pitch Curve Hold . . . . . . . . . . . . . . . . . . . . . 18
Swashplate Ring . . . . . . . . . . . . . . . . . . . . . 18
Throttle Mixing . . . . . . . . . . . . . . . . . . . . . . . 18
Swash Mixing. . . . . . . . . . . . . . . . . . . . . . . . 18
Cyclic Mixer . . . . . . . . . . . . . . . . . . . . . . . . . 19
Rudder Mixing . . . . . . . . . . . . . . . . . . . . . . . 19
Flight Condition . . . . . . . . . . . . . . . . . . . . . . 19
MODEL SETUP – QUADCOPTERS . . . . . . . . . 19
SETTINGS MENU – QUADCOPTERS . . . . . . . 19
LINK THE RX TO THE TX. . . . . . . . . . . . . . . . . 19
FAILSAFE FUNCTION . . . . . . . . . . . . . . . . . . . 19
WIRELESS TRAINER . . . . . . . . . . . . . . . . . . . . 20
WIRED TRAINER . . . . . . . . . . . . . . . . . . . . . . . 22
RANGE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . 22
FIRMWARE UPDATES . . . . . . . . . . . . . . . . . . . 22
WARNING INDICATIONS . . . . . . . . . . . . . . . . . 23
SYSTEM CHECK AND OPERATION . . . . . . . . 23
FLYING THE AIRCRAFT. . . . . . . . . . . . . . . . . . 24
IMPORTANT WARNINGS
AND PRECAUTIONS . . . . . . . . . . . . . . . . . 24
TTX850 SPECIFICATIONS . . . . . . . . . . . . . . . . 25
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . 25
SAFETY GUIDE. . . . . . . . . . . . . . . . . . . . . . . . . 26
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . 26
FCC STATEMENT . . . . . . . . . . . . . . . . . . . . . . . 27
CE COMPLIANCE INFORMATION
FOR THE EUROPEAN UNION. . . . . . . . . . 27
1-YEAR LIMITED WARRANTY. . . . . . . . . . . . . 28
2
Carrying
Handle
LED Power
Indicator
Toggle
Switches
Trim
Levers
Charge
Jack
Pushbuttons
Neck
Strap
Eyelet
Power
Switch
LCD
Trainer
Jack
Accessory
Accessory
Battery
Battery
Connector
Connector
Socket
Socket
Firmware Upgrade Jack
Side
Side
Lever
Lever
Port
Port
SLT TECHNOLOGY, Tx-R, AND COMPATIBLE RECEIVERS
SLT technology ensures that transmitters emit a strong, clear, frequency-hopping
2.4GHz signal, and that your compatible receiver accepts no signal except yours.
™
Binding Tactic brand receivers is as simple as pushing a button, which creates a
locked-in, interference free link. The TTX850 is also compatible with non-Tactic
brand receivers which use the *SLT protocol, for the ultimate in convenience and fl exibility.
* Make sure optional receivers have the genuine SLT protocol before use with the TTX850.
The TTX850 is also compatible with all transmitter-ready aircraft bearing the
“Tx-R” logo. Such aircraft include receivers having the SLT protocol.
RECEIVER INSTALLATION
Always mount the optional receiver, servos, switch harness, bat ter y, el e c tronic spee d control, etc. as expla ined
in the manual included with such equipment and/or the model. Keep the Rx and its antenna(s) as far away
from the engine/motor, servos, and ESC and other electronic items as possible. It may also be a good idea
to mount the Rx inside certain models using Velcro®, and wrap it in foam rubber to prevent damage from
strong vibrations or crash damage (except in extremely warm environments). It’s best to have as few items
surrounding the receiver’s antenna tips as possible inside the model, to allow for the most obstruction-free
signal path to the transmitter. Exposing the receiver’s antenna tip outside the model is recommended if
possible. For receivers with two antennas, position the antennas at 90 degree angles with the tips resting
at least 5 inches apart. If possible, allow one antenna to point vertically above the receiver itself.
TM
3
TTX850 POWER SYSTEM
INPUT POWER
Four 1.2V “AA” NiMH cells are included. NiCd or 1.5V alkaline batteries can also be used. Do not mix cell
types, or old and new cells, etc. Slide open the battery door to fi nd the battery holder. Insert all cells with
the proper polarity as shown inside the battery holder. Carefully tuck the wires and battery holder inside
the battery compartment so not to damage them when closing the battery door.
Battery voltage is shown on the LCD’s home screen for easy monitoring. A “LOW BATTERY” warning will
show when battery power drops to the voltage value shown in the BATTERY ALARM screen as described
on page 8.
WARNING ! Never operate an R/C model with weak Tx batteries! Reduced operational
range and/or possible loss of control of the aircraft could result. Replace weak alkaline
batteries, or re-charge NiCd or NiMH batteries, before attempting a fl ight!
A “Tx Battery” timer in the TIMER menu described on page 16 can track the total amount of time the
transmitter has been operational.
See the ACCESSORIES section on page 26 for optional batteries and chargers available at local hobby
retailers.
CHARGE JACK AND CHARGING RECHARGEABLE BATTERIES
The charge jack should only be used for rechargeable batteries. Do not try to
re c harge alkaline batteri es. Charge adapters for Futaba® brand transmitters are
compatible, with the center pin being positive polarity. The Tx power switch must
TTX850 Charge Jack
Misuse, improper charging, or over-charging of rechargeable cells can result in damage to the cells that
could include cell rupture, explosion, or fi re!!
be in the OFF position to recharge batteries. Do not charge batteries at greater
than 1 amp. Cycling of the Tx batteries can be accomplished through this jack.
WARNING ! Do not accidentally short circuit the terminals inside the charge jack, as
this can cause permanent damage to the radio’s charge circuitry and battery and void
the warranty.
POWER LED
The blue LED illuminates when the power switch is turned on and ample voltage is supplied by the battery.
This LED will fl ash if battery voltage drops to the voltage set in the BATTERY ALARM setting described
on page 8.
FLIGHT CONTROLS
All channels are fully proportional, depending if controlled by a switch or mixed to another proportional
channel. Channels 5-8 can be controlled by a non-proportional switch or proportional side lever. However,
if a proportional channel (1-4) is mixed to channel 5-8 these channels can provide proportional control.
Aircraft control is accomplished through various devices by the pilot (sticks, switches, etc.), and other control
inputs can be manipulated electronically by the Tx to alter the control signals before they are delivered to the
receiver (mixes, exponential, etc.). Some electronic functions can be turned on/off by the pilot during fl ight
such as a timer. Other functions can only be altered while the model is on the ground, such as changing
4
travel limits or reversing for a particular channel.
GIMBAL STICKS
Ball-bearing construction allows both sticks to provide the ultimate in smooth, precise control. Stick length
can be adjusted for optimum feel and control. Each stick consists of a base and a tip. To adjust, hold the base
tightly, then loosen the tip by turning it counter-clockwise. Adjust the stick tip to the desired length. Tighten
the stick by holding the tip in place and turning the base counter-clockwise until it’s tight against the tip.
STICK TENSION AND THROTTLE RACHET
Each control stick can be adjusted for softer or stiffer movement tension. A ratchet is also included for the
throttle stick which can be adjusted for feel depending on personal preference. Adjustment of either feature
requires removal of the rear of the Tx case as explained in the CASE SEPARATION AND ASSEMBLY
section below.
CASE SEPARATION AND ASSEMBLY
WARNING ! Failure to follow these instructions for separating and re-assembling the Tx
case can result in permanent damage to the transmitter and void the warranty. Contact
Hobby Services if you do not feel comfortable that you can safely and accurately perform
these steps.
ALWAYS disconnect and remove the batteries from the battery compartment FIRST. Failure to
do so can result in permanent damage to the Tx.
Remove the six screws from the back of the Tx case. Carefully pull the case rear away from the case
front and note exactly how all wires are routed inside the case.
After adjustments are made as described in other sections of this manual, close the case by fi rst carefully
tucking all cables back inside as when the case was opened. Align the case rear back onto the case front,
making sure that no wires are pinched between the case parts. Press the case halves together. Insert
the screws back into their positions and carefully tighten them until snug - making sure not to cross the
threads or over-tighten the screws. Re-connect the battery holder’s connector to the socket inside the
Tx. Insert the battery into the compartment, and carefully tuck the wires inside the cavity so they do not
become pinched when the door is closed. Close the battery door.
STICK TENSION: Silver screws on the back of each g imbal are used to adjus t the sti c k tensio n. Turn the
screw clockwise to make stick tension more fi rm. Turn the screw counter-clockwise to make stick tension
more light.
THROTTLE RATCHET: A silver ratchet bar is mounted across the throttle gimbal. For airplane use, a
more fi rm ratchet feel might be desired for the throttle. In this case, turn the adjustment screw clockwise.
For helicopter use, less of a ratchet feel might be desired. Turn this adjustment screw counter-clockwise
to achieve the desired feel.
DIGITAL STICK TRIMS
The trim controls for the four main channels are digital. Holding the trim lever will cause the servo output
to move repeatedly. Trim positions are visible on the LCD’s home screen, and stored into that respective
memory. Changing the model memory will also cause trim settings to change accordingly.
For aircraft with glow engines, the precise position of the trim lever is helpful when determining the engine’s
preferred idle point. When the throttle stick is above 50% full thr ot tle it will not b e possible to trim the thr ottle
servo – even though the indicator on the LCD will move.
The amount of servo movement for each increment of a digital trim can be adjusted as desired, as explained
in the TRIM STEP SETTING section on page 10.
5
TOGGLE SWITCHES
Each switch can be assigned to control one of a variety of functions as desired and described throughout
this manual. The identifi cation of each switch by letter is marked on the Tx. The factory default switch
assignments are as follows:
Switch
A
B
C
D
E
F
G
H
I
J
Type
3-position
3-position
3-position
3-position
3-position
2-position Momentary
3-position
2-position
Sweep Lever
Sweep Lever
Default Function
Airplane
Ch2 Elevator Dual-rate
Flaps
(No Setting)
Aileron Dual-rate
Rudder Dual-rate
Trainer
(No Setting)
(No Setting)
(No Setting)
(No Setting)
Default Function
Helicopters
Timer Control
Gyro Gain
(No Setting)
Aileron, Elevator, & Rudder
Dual-rates (All)
Normal / Idle-up
Throttle Cut
(No Setting)
Throttle Hold
(No Setting)
(No Setting)
HOME SCREEN
The factory default screen and menus will be for airplanes. See the next section for navigating and changing
menus for model type and other functions.
LCD, PROGRAMMING CONTROLS, MENU NAVIGATION
6
LCD contrast and backlight intensity are adjustable for optimum viewing. Six pushbuttons navigate
the menus and settings. Single button pushes will result in a single incremental adjustment on-screen.
Holding a button for a short time will result in slow scrolling of adjustments; continued holding will result
in fast adjustments.
LEFT SIDE BUTTONS
Press any time to see the servo position screen. Indicators for certain channels will change
depending on model type, wing type, etc. Moving any Tx control will graphically be shown
on this screen. When setting / adjusting mixes to determine if the mix is as desired, set the mix and then
view this screen. Move all controls to determine if the mix moves each respective channel as needed.
Quickly resets certain values and settings back to factory defaults. Press to backspace in
the model and user name screens.
Jumps back to the previous screen, and removes certain pop-up messages from the screen.
RIGHT SIDE BUTTONS
Adjustment of values on-screen.
Moves the cursor up, and for increasing highlighted values/settings.
Moves the cursor down, and for decreasing highlighted values/settings.
To select or de-select a setting, or enter a screen. Press briefl y to access the SETTINGS
menu. Press and hold to access the MODEL SETUP menu.
MENUS
The TTX850 has three types of menus.
The SYSTEM SETUP menu allows for setting basic operational functions for the radio itself.
Selecting and managing the model memories, confi guring the radio for the structure of the airplane,
helicopter, or quadcopters is done in the MODEL SETUP menu. Most functions apply for all model types.
Select functions are available for certain model types only.
Setting various radio functions to control the model is done in the SETTINGS menu. Some settings apply
for all model types, while certain functions are available for certain model types only.
SYSTEM SETUP
Fundamental settings for the transmitter itself are located in this menu. With the power switch in the OFF
position, press and hold ENTER, turn the power switch ON and wait for the SYSTEM SETUP screen to
show. Move the cursor and press ENTER to select any setting. Press and to change set tings. Press
ENTER to confi rm the setting.
USER NAME
Enter your name to identify the radio. The cursor will be under the fi rst character. Press ENTER to highlight
this character. Press and to fi nd the desired character, then ENTER to confi rm. The cursor will
automatically move to the next cursor. Repeat as necessary for up to 11 characters. Pressing CLEAR will
move the cursor back one space and erase the character in that space. Press ESC when fi nished.
STICK MODE
The TTX850 is factory set to Mode 2 confi guration,
but can be changed to Mode 1, 3, or 4 as explained
be low. To c h ange modes in the pro gramming, move
the cursor to the STICK MODE line, highlight and
press ENTER, then press or to fi nd the
desired mode. Press ENTER to confi rm.
In addition to programming changes, stick mode changes require relocation of gimbal stick parts to achieve
the proper control. Go to www.tacticrc.com and click on the TTX850 link to fi nd directions for how to change
gimbal settings.
Mode
1
2
3
4
Left Stick
aileron/rudder
throttle/rudder
aileron/elevator
throttle/aileron
Right Stick
throttle/elevator
aileron/elevator
throttle/rudder
elevator/rudder
CONTRAST
Adjust the LCD’s contrast level for optimum viewing.
SPEAKER VOLUME
Adjust the loudness of the radio’s beeper as desired. This volume setting affects all tones that are emitted
from the radio including trim adjustments, alarms, programming changes, etc. Speaker volume for all alarms
is not adjustable.
7
BATTERY ALARM
An alarm will sound and the display will show a warning when the Tx battery’s voltage drops to the level
shown in this setting. Do NOT set this value too low, as the radio could lose power very rapidly as the
battery nears full discharge and cause a loss of control of the model. Land the model immediately once
this alarm has sounded!
VIBRATION POWER
Adjust the intensity of the vibration from the internal vibration motor system.
BACK LIGHT
Adjust the intensity of the LCD’s red backlight.
Once all functions in this menu are set, press ESC to return to the home screen.
MODEL SETUP MENU – AIRPLANES
From the home screen, press and hold ENTER for 2 seconds to fi nd the MODEL SETUP menu for setting
of fundamental operating parameters as explained here.
MODEL SELECT
Memories are available to store parameters for up to 30 different models. With this selection highlighted
press ENTER. Press or to move the cursor up/down the screen to fi nd the desired memory to make
active, and press ENTER twice to confi rm the selection and automatically return to the home screen. Or
press ESC to return to the home screen.
8
Changing the model memory is not possible if the Tx battery voltage is too low. See the INPUT POWER
section on page 4. It’s a good idea to keep a record of all settings in each memory as a backup in case
parameters in a particular memory are accidentally changed, etc.
MODEL MANAGEMENT
Shows basic information regarding the model setup in the “Model” memory number at top-left. Move the
cursor up or down to select / change the function to adjust, and press ENTER to adjust the function.
Name: With the cursor on this line press ENTER. The method for setting the model name is the
same as for entering the USER NAME as described on page 7. The maximum number of characters
is eleven. Press ESC when fi nished.
Model Type: Press to place the cursor on this line, and ENTER to highlight the selection. Press
or to select the model type as airplane, helicopter, or quadcopter. Press ENTER to confi rm.
Model Copy: To copy all parameters from one model memory to another, place the cursor at this
line and press ENTER. The “COPY FROM” page will show. Highlight the memory to copy FROM and
press ENTER. Now the “COPY TO” page will show.
Place the cursor over the memory number to copy TO, and press ENTER. The “COPY CONFIRM” screen
will show. To abandon the copy function as shown on-screen, highlight “NO” and press ENTER to return
to the “COPY TO” screen. Press ESC to return to the “MODEL MANAGEMENT” screen.
Otherwise, press to highlight “YES” and press ENTER. All settings that previously existed in the receiving
memory will be permanently erased. The display will return to the COPY TO screen. Return to the “MODEL
SELECT” screen to confi rm the copy function was successful by looking at the memory that was copied “to”.
Model Reset: Use this function to clear all parameters of any single memory except model type back
to factory defaults. Enter this screen, move the cursor over the memory to reset and press ENTER.
Select “NO” to cancel or “YES” to proceed with the reset, and press ENTER. The display will then
return to the “MODEL RESET” screen.
Model Transfer: To transfer all parameters of one memory in this transmitter to another Tactic
TTX850 transmitter, move the cursor to this line and press ENTER. Press or to determine if
the data transfer should be done by wireless means or through a cable (through the USB data port
inside the battery compartment).
WING TYPE
This is for setting the type of tail and wing confi guration for the model. Depending on the mixes used and
setup of the aircraft, it might be necessary to change the aileron, elevator, or rudder reversing settings to
achieve the proper throw directions for the model.
TAIL SETTINGS
“Normal” is the factory default setting for the “TAIL” type. Move the cursor over “Normal”, press ENTER
then or to select from V-Tail, Delta (elevon), and 2 Elevator options. Press ENTER to confi rm the
selection. The charts below can aid in determining the preferred tail and fl ap setting for the model.
Normal: One servo each is used for aileron(s), elevator(s), and rudder.
V-tail : Elevator and rudder channels are mixed. Two servos are used in the tail – one for each control
surface, with connections as shown in the graphic below. V-tail mixing controls the airplane’s “pitch”
and “yaw” axis at the same time. If the elevator and rudder functions appear reversed at the control
surfaces, it may be necessary to swap the channel 2 and channel 4 servo plug positions in the Rx. The
travel limits for each servo can be adjusted independently.
Delta wing (elevon): Elevator and aileron channels are mixed, useful for aircraft such as fl ying
wings and other models not having a tail. Elevon mixing controls the airplane’s “pitch” and “roll” axis at
the same time. One servo is used for each control surface. Travel limits for each servo can be adjusted
separately. If the elevator and aileron functions appear reversed at the control surfaces, it may be
necessary to swap the channel 1 and channel 2 servo plug positions at the Rx for the delta wing mix.
If the delta wing option is selected, and the “FLAP” option below is set to 2AI1FL, the elevator channel
will mix 100% to the aileron channel.
2-Elevators: Elevator channel 2 and channel 6 are mixed for aircraft which have two separate
servos moving separate elevator surfaces. Both elevators move independently, and are independently
adjustable for travel limits, etc.
FLAP SETTINGS
The “FLAP” setting allows for confi guration of the ailerons and /or fl aps of the airplane. Move the cursor over
“1AI” to select from the following options:
1AI : Use this “1 aileron” setting for normal wing types having one aileron on each wing, where one
servo controls the movements of both servos simultaneously.
1AI1FL : This “1 aileron + 1 fl ap” setting is for wings having one servo that controls the ailerons on
both wings, and another servo (or 2 servos on a Y-harness) that controls the fl aps on both wings (both
servos moving in the same direction). Connect the aileron servo to Rx channel 1, and the fl ap servo
to channel 5 (not available for delta).
2AI: This “2 ailerons” setting is for airplanes having one aileron servo for each wing. Connect one
aileron servo to Rx channel 1, and the other to channel 6. This setting allows each aileron servo to
function independently of the other.
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