GuangZhou Walkera Technology WK-0702 6-CH TRANSMITTER FOR R/C HELICOPTER User Manual

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Document ID	697726
Application ID	21/TqbkqODfbKFQlu6XiFA==
Document Description	USERS MANUAL
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Document Type	User Manual
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Filesize	302.08kB (3776002 bits)
Date Submitted	2006-08-25 00:00:00
Date Available	2006-08-25 00:00:00
Creation Date	2006-08-16 17:24:56
Producing Software	Acrobat Distiller 7.0.5 (Windows)
Document Lastmod	2006-08-16 20:09:04
Document Title	Users Manual
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1.0 Foreword --------------------------------------------------------------------------------------------------------------- 2
2.0 Control Identification and Location ----------------------------------------------------------------------------------------- 2
3.0 Backboard Identification -------------------------------------------------------------------------------------------------- 4
4.0 Receiver Connection ----------------------------------------------------------------------------------------------------- 5
5.0 WK-O702 Control Identification -------------------------------------------------------------------------------------------- 5
6.0 Receiver Channel Assignment -------------------------------------------------------------------------------------------- s
7.0 Transmitter Function ----------------------------------------------------------------------------------------------------- a
8.0 Frequency Selection ---------------------------------------------------------------------------------------------------- 10
9.0 Transmitter Specification ------------------------------------------------------------------------------------------------ 11
10.0 Receiver Specification ------------------------------------------------------------------------------------------------- 11
11.0 Control Stick Adjustment ----------------------------------------------------------------------------------------------- 12
12.0 Neck Strap Usage ---------------------------------------------------------------------------------------------------- 12
13.0 Radio Frequency ----------------------------------------------------------------------------------------------------- 12
14.0 Method for Throttle Mode Change --------------------------------------------------------------------------------------- 12
15.0 Installation Requirement --------------------------------------------------------------------------------------------- 13
1.0 Foreword
The WK-O702, which is a compact and powerful 7—channel digital proportional transmitter, can automatically control over transmission
frequency points due to the advantage of frequency synthesizer based on Phase—Locked Loop (PLL) technology. It is possible to free
switch among 6 frequency points without the trouble of altering crystal oscillator. The WK—0702 is of such functions as throttle curve,
PIT adjustment, rudder mixing and so on, and all the trim adjustments are scaled in fine increment. The more featured characteristics
include screen flashing when powered on, LED indication of function status, and electric means of adjusting gyro sensitivity instead of
mechanic means. The WK—0702 is an optimal transmitter for the hobbyist.
ification and Location
Antenna Status LED
Exponential / PIT Iimit/ Power indicator
Gyro sensitivity knob . .
Rudder mixmg/
- Throttle curve /
Gear swfich PIT knob
Elevator trim Flight mode switch
Left stick Right stick
Power SW Throttle trim
Rudder trim
Aileron trim
2.1 LED indication
The screen flashing indication, when your WK—0702 is powered on, is multi—color alternant flashing. The electricity volume indication is
gradually becoming light from red to green.
Electricity volume indication: green on — fuII electricity; green off and yellow and red on — short of electricity and please flying back your
aircraft; only red on - seriously short of electricity and stopping flight immediately.
When LED is in purple indicates the No. 10, 11, 12 DIP switches (on the reverse side of your WK-0702) are staying at LOCK position.
When LED is in light blue means the No. 10 DIP switch stays at ON position and No. 11, 12 at LOCK position, and the PIT parameter is
adjustable during this period.
When LED is in orange means the No. 11 stays at ON position and No. 10, 12 at LOCK position, and the throttle curve lexponential
function are adjustable during this period.
When LED is in dark blue means the No. 12 is at ON position and No. 10, 11 at LOCK position, and the gyro sensitivity/ rudder mixing
are adjustable during this period.
DIP Switch Assignment DIP switches
1. Elevator 7. Rudder Mixing
2. Aileron 8. Normal / CCPM Z
3. Throttle 9. Elevator function in CCPM mode W
4. Rudder 10. PIT lock
5. Gear 11. Throttle curve / Exponential adjustment
6. PIT 12. Gyro sensitivity / Rudder mixing adjustment
1111016 8 L 9
3.0 Backboard Identification
DIP switches \ / Carrying handle
Fre uenc oint button
q Y P RF module
Charge jack
Battery case DIP switch assignment
4.0 Receiver Connection:
LED indication
Frequency
point button
an
AUX2
AUXi
LED 1mnanscavaz Gm
W 31702 RUDD
mm
Izmiz ms
was iN CHINA ELEV
kw
Connect to BEC
AUX 2
PIT
Gear
Rudder
Throttle
Aileron
Elevator
WK - 0702 C0 oI Identification
MODE I
1. Left stickI Rudder. It controls your helicopter forward, backward, left, and right. Push up to fly your helicopter forward, pull down to fly backward,
push leftward to fly left, and push rightward to fly right.
2. Right stick I Throttle. It controls your helicopter ascending, descending, left moving and right moving. Push up to ascend your helicopter;
pull down to descend, push leftward to move your helicopter left, and push rightward to move right.
MODE II
1. Left stick/Throttle. It controls your helicopter ascending, descending, left, and right. Push up to ascend your helicopter, pull down to descend,
push leftward to fly left, and push rightward to fly right.
2. Right stick I Rudder. It controls your helicopter forward, backward, left moving and right moving. Push up to fly your helicopter fonrvard, pull
down to fly backward, push leftward to move your helicopter left, and push rightward to move right.
3. Throttle trim. The throttle trim controls your helicopter to ascend and descend. Push up the trim to ascend, and pull down to descend.
4. Aileron trim. The aileron trim controls your helicopter leftward and rightward. Push the trim left and fly left, and push the trim rightward and fly right.
5. Elevator trim. It controls and modifies your helicopter forward and backward. Push up to fly forward, and pull down to fly backward.
6. Rudder trim. The trim controls and modifies your helicopter leftward and rightward. Move the trim left to fly leftward, and move right to fly rightward.
1. geOaPEWitCh. Convert the gear switch to fold or release the skid landing system. Switching the switch up is ON, and switching the switch down
8. Flight mode switch. Convert the flight mode. Switching up is the normal flight mode, and switching down is the inverted flight mode.
9. Exponential I PIT limit I Gyro sensitivity knob. Under the help of DIP switches, all the functions can be switchable.
10. Rudder mixing [Throttle curve I PIT knob. Under the help of DIP switches, the knob can experience rudder mixing adjustment, throttle curve
adjustment, and PIT adjustment.
11. Indicator. Show the battery volume of the transmitter. Green LED on means the electricity is full; Green LED off means the electricity is not
enough; Yellow LED off means the electricity is seriously short and the circuit will be automatically protected, and the flight is forbidden.
12. Frequency point indication: when pressing and holding the frequency point button on the reverse of your WK—0702, the lighting LED
indicates the current frequency point which you are using; when releasing the frequency point button, the lighting LED will return to the electricity
indication. When continuously pressing twice the frequency point button, the lighting LED of electricity indication will turn into that of frequency
point selection indication; then when pressing every once the frequency point button, the lighting LED will sequentially and cyclically move down
to select the frequency point; when the required LED lighting, stop pressing the button at once, and then the LED will return to the electricity
indication. The corresponding frequency points which LED stands for are shown below:
~ 1 RED
Frequency m
points 2 RED
15‘VELLow
2m VELLow
1 s‘GREEN
1m GREEN
13. Status LED. LED flashes when turning on the transmitter; Light blue indicates to adjust PIT limit and PIT parameters; Orange indicates
to adjust servo exponential and throttle curve; Dark blue indicates to adjust gyro sensitivity and rudder mixing parameters.
.O Receiver Channel Assignment
1. ELEV: Elevator, connect to elevator servo.
2. AILE: Aileron, connect to aileron servo.
3. THRO: Throttle, connect to speed controller.
4. RUDD: Rudder. connect to rudder servo.
5. GEAR: Gear, connet to gear servo.
6. AUX1: Pitch /Aux 1, connect to pitch servo.
7. AUX2: Aux 2.
7.0 Transmitter Function
7.1 CCPM I NOR Selection
If your helicopter is using CCPM mode, put the No.8 DIP switch on
the reverse side of the transmitter to the ON position. If your
helicopter is using NOR mode, put the No.8 DIP switch to the OFF
position.
7.2 Reverse Adjustment
In order to fit various servos, your WK—0702 is equipped with
servo reverse functions. These reverse switches are located at
the first 7 of 12 DIP switches on the reverse side of your WK-0702,
and shown as top right. Please refer to page 4.
Channel No. Reverse Function ON Position OFF Position
1 Elevator Reverse NORMAL
2 Aileron Reverse NORMAL
3 Throttle Reverse NORMAL
4 Rudder Reverse NORMAL
5 Gear Reverse NORMAL
6 PIT Reverse NORMAL
7 Rudder Mixing Reverse NORMAL
7.3 PIT Lock and Adjustment
The WK- 0702 provides the PIT and PIT limit adjustment functions
and can lock the adjusted parameters as below:
A. Put the No.10 DIP switch in the ON position and the status
LED becomes light blue. Put the No.11 and 12 DIP swtiches
in the OFF position. Circumrotate the V1, V2, which are individually
marked on the top left and right knobs, to the 0 position.
B. Tuning V1 to the “+" end increases the PIT value and tuning
V2 to the end decreases the PIT value.
C. Tuning V2 to the “+" end increases the PIT limit value and tuning
V2 to the - end decreases the PIT limit value.
D. After the adjustment is finished, put the No.10 DIP switch to
the OFF position and lock the adjusted PIT parameters.
7.4 Gyro Sensitivity and Rudder Mixing
Adjustment
A. Put the No.12 DIP switch on the ON position, and the No.10 &
11 DIP switches on the OFF position. Circumrotate the V1, V2
on the top left and right knobs respectively to the 0 position.
B. V1 provides the function of rudder mixing adjustment. Adjust
the rudder mixing value to 40% when V1 is at 0 position; Tuning
V1 to the “+" end increases the rudder mixing value and the
maximum value is 80%. Tuning V1 to the — end decreases
the rudder mixing value and its minimum value is O%.
C. Tune V2 to the 0 position and the gyro sensitivity is 0. Tuning
to the "—“ end is the gyro NOR sensitivity, the maximum value
is 100% and the gyro is in the NOR mode; tuning to the “+"
end is the lock mode, the maximum value is 100%, and the
gyro is in the lock mode. The gyro sensitivity in hovering flight
is at 70—80 % and for aerobatic flight is at 60-70%, Gyro lock
mode in flight is recommended.
WK
7.5 Throttle Curve and Servo Exponential Function
Put the No.11 DIP switch on the ON position and No.10 & 12 on
the OFF position. Circumrotate V1 and V2 to the 0 position.
7.5 1 Normal Throttle Curve Adjustment
Switch the 3D inverted flight switch to the normal flight mode.
Tune V1 to the “+" end and move the throttle curve upward. the
maximum range is 80% upward; tune V1 to the end and move
the throttle curve downward and the maximum range is 40%
downward. Tune V1 to 0, the curve is linear (Fig. 1).
7.5 2 Inverted Flight Throttle Curve Adjustment
Switch the 3D inverted flight switch to the 3D inverted flight mode.
When tune V1 to 0 position, the curve is V—shape and the throttle
center is at 60%. Tune V1 to the “+" end, and the curve moves up
and its maximum range is 80%; tune V1 to the — end, the curve
moves down and its minimum range is 40% (Fig. 2).
IOWA
75%
SIP/n
Downward m,
7.5 3 Servo Exponential Function
When tune V2 to 0 position, the curve is linear (Fig. 3); When
tune V2 to the‘ “‘+ end, the servo curve will be changed in the
form of exponential (Fig. 4). When tune V2 to the - end the servo
curve will be changed“ in the form of negative exponential (Fig. 5).
Fig. 3 Fig. 4 Fig. 5
8.0 Frequency selection
8.1 Frequency Selection
7.5.4 3D Inverted Flight
The WK-0702 offers two flight modes: normal and 3D aerobatic.
If put the flight mode switch to N position, the flight mode is normal;
if put the flight model switch to 1 position, the flight mode is
aerobatic. If the flight mode switch is at 1 position when turning
on the transmitter, the LED will flash and there is no signal to be
transmitted, and the system will automatically enter the protection
status; if the flight mode switch is put to the N position, the protection
status will be removed.
There are total 6 frequency points to be selected in your WK—O702. When you select the frequency points, the 6 electricity LED lights in your
WK—0702 stand independently for different frequency points shown as below ( refer to page 7 ):
LED location
7ZHM/
Frequency 40HMz
36HMz
points
15‘YELLow z" dYELLOW S‘GREEN 2nd GREEN
72 850 72870 72,890
The method for frequency point selection: when pressing the
frequency point button on the reverse of your WK-0702, the
lighted LED indicates the current frequency point you are using,
and when releasing the button, the LED will return to electricity
indication. When continuously pressing twice the frequency point
selection button on the reverse of your WK—0702, the lighting LED
of electricity indication will turn into that of frequency selection
indication. When pressing every once frequency selection button,
the lighting LED will sequentially and cyclically move down to
select frequency point; when the required LED lighting, immediately
stop pressing the button and the LED will return to electricity
indication. The frequency point transmitted is the very point
required.
8.2 Receiver Frequency Setup
Alter the transmission frequency selected, power on your WK—0702,
and then power on your receiver. If the LED in receiver is lighting
without flashing, the frequency points respectively from your
WK—0702 and the receiver are linked up, and you can inspect
the functions by testing the servos' movement. If the red LED in
receiver is flashing, the frequency points failed to be linked up,
and you can modify via pressing the frequency point button in
receiver under the help of a small screwdriver until the flashed
red LED turns into lighting red LED.You should repeat the above
steps when you re-select the frequency point. Notice: as far as
possible away from other radio equipment, especially on the
same frequency, in order not to interfere, when you are selecting
a frequency point. Never selecting frequency point during your
aircraft which is flying, othenNise unexpected accidents may
happen.
9.0 Transmitter Specification
Encoder ------------------ 7-channel micro computer system
Modulation ----------------------------------------- PCM
Output Power ———————————————————————————————————— <1°°MW
Current Drain -------------------------------------- 200mA
Power Source ------------------ 12x8 NiCad (9.6V 600 mAh)
or 1.5Vx8 AA dry batteries
Output Pulse ------------------ 1050 — 1850 Ms (1450 Neutral)
Type -------------------------------------- 7—Channel PCM
Sensitivity -------------------------------- 0.5 u V (minimal)
Selectivity --------------------------------------- 8K2150db
Frequency Interval -------------------------------- 20KZ
Weight ----------------------------------------------- 199
Dimension ------------------------------ 42.5 x 28 x 15.5mm
Antenna Length -------------------------------------- 1m
Receiver Battery ------------------------ 4.8V 1100mAh
11.0 Control Stick Adjustment
The length and tension of the control stick are adjustable.
11.1 Control Stick Length Adjustment
To adjust the stick length, use the 1.5mm Allen Wrench to
unlock the set screw, and then turn the wrench clockwise or
counterclockwise to adjust the stick length. After the stick
length has been adjusted to suit your flying style, tighten the
set screw.
11.2 Stick Tension Adjustment
Take out the battery and unscrew the fixing screws on the
reverse of your WK-0702, and remove the cover. Notice: don't
break the cables inside! Use screwdriver to adjust the tension
of stick and screws to an appropriate extent (Fig. 6). CW
adjustment tightens and CCW adjustment loosens.
Fig 6
lixing screw
fixing screw
12.0 Neck Strap Usage
There is a Hook on the face of the WK—0702 transmitter. The
neck strap can be hooked on the eyelet. The Hook located at
the center is helpful to getting the optimal balance of the
transmitter.
13.0 Radio Frequency
Both of WK—0702 and receiver utilize manually controlled PLL
(phase—locked loop) to select the frequency points and save
your crystal oscillators. There are total 6 frequency points to be
selected. Notice: never use the same frequency radio equipments
with other hobbyists in the same ground.
14.0 Method for Throttle Model Change
Take out the battery pack and RF module, unscrew these 4 fixing
screws on the reverse of your WK-0702, and then remove its
cover. Notice: don't break any cables inside!
Fig. 7
throttle arresting
ball linkage screw _
spnng
4. When mounting the receiver antenna, please make sure that
the main rotor and tail rotor blades or the propellers cannot
entangle it.
5. Transmitter Battery Mounting: Please note the polarities when
inserting the plugs.
diverter switch
. Installation Requirem
It is important to correctly mount your radio system in your model.
Below are some advices on how to install your WALKERA
equipment.
1. Installations of rubber grommets and copper sleeve to isolate
the vibration are musts. The mounting screws cannot be
over—tightened. Otherwise, the rubber grommets will be
distorted and decrease the vibration absorption effect.
2. When mounting the servos, please make sure they can freely
move over their whole travel ranges and ensure the control
linkages don't touch or impede the movement of the servos.
3. Install various switches far away from the engine tuned pipe
and far away from the high vibration area, and ensure all the
switches move freely over their whole ranges.
WM
-WALKERA PRODUCT
The specifications of the RIC Product may be altered without notice.

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