Futaba 8JN User Manual

Page 1
Futaba
DIGITAL PROPORTIONAL
RADIO CONTROL
Page 2
THANK YOU for purchasing a Futaba digital
proportional radio control set.
Please read this manual thoroughly before using your
set.
CONTENTS
Features........................................................................
Contents Transmitter Using
Using
Modules........................................................................
Warranty Repair and
and
Ratings
Controls
the
Transmitter
the
Receiver
.....................................................................
Adjustment
...................................................
......................................................
...................................................
and
Servos
.......................................
Service
.......................................
Page 3
• FEATURES
This radio control set has been developed for FAI RC acrobatic F3A use. Please read this manual thoroughly before using your set.
Transmitter FP-T8JN
•The transmitter employs a module system. The frequency band and modulation method can be
changed with one touch.
•The
servos
can
be
operated radio signals. Wire operation is possible by using the special cord furnished with the set.
•A reversing device is self-contained. The servo can be reversed by switching a switch.
•An aileron and elevator angle switching device is self-contained.
•Open gimble sticks provide maximum feel.
•An travel adjuster is self-contained. Servo travel is independently adjustable to the left and right (up, down).
•Elevator and flap mixing. Amount and direction are variable. Release switch is also provided.
•Flap
and
spoiler
are variable. Release switch is also provided.
•Two
roll buttons. Elevator angle and
can be freely adjusted.
•Two
snap
rudder angle and direction can be freely adjusted.
•Throttle button. Throttle half can be freely adjusted.
•Hook band is standard. Since this transmitter has numerous accessories, hanging it from your neck with this band makes operation easier.
•Buit-in
antenna. Locked when
roll
mixing.
buttons.
stage.
•Human engineered exterior. Superior operability.
without
Amount
Aileron, elevator, and
pulled
transmitting
and
direction
direction
up
one
stage.
Receiver FP-R8J
•Module type. The frequency band and modulation method as the transmitter.
•Eight
and rugged case.
•All
pins. Housing is also special and provides an ex­cellent feeling. Resistance against vibration and shock has been improved substantially.
•One-stage FET RF amplifier. Two signal charac­teristic is superb.
•Servos can be controlled without transmitting by connecting the transmitter directly to a "C" terminal.
can be changed
channels
connectors
with
packed
in a compact,
have
trouble-free, metal
one
touch,
lightweight,
the
plated
same
FP-S121, FP-S121H and FP-S121G servos
•Compact, lightweight, rugged.
•Powerful output torque (3kg-cm).
•Output
•Waterproof, dustproof type.
•Special 16/o micromotor.
•High-speed servo (FP-S121 H) is also available.
•Standard equipment includes two 8-channel,
shaft
is
supported by assure excellent neutral characteristics and ample durability.
6 servo landing gear servos (FP-S121G).
two
ball bearings
to
Page 4
• SET CONTENTS AND RATINGS
Transmitter FP-T8JN
Operating system Transmitting frequency
Modulation system
Power requirement Current drain
: Two-stick, 8 channels : 27MHz, 53MHz Bands
72MHz Band
:
AM or FM
Selectable by changing
modules. : 9.6V 8/500mAH : 150mA
Set name
Transmitter Receiver Servo Landing gear servo Switch NiCd battery
Accessories
FP-8JN
FP-T8JNx1 FP-R8JX1 FP-S121x4 FP-S121Gx2 R4-SWJx1 NR-4Hx1
Charger, extension cord, landing gear adapter, DSC cord, ribbon, horn, servo tray
Servo FP-S121
Control system
Operating angle
Power requirement Current drain Output torque Dimensions Weight
+ pulse width control
1520 uS.N
One-side 45° or greater
(including trim)
4.8V 8mA (when stopped)
3.0kg-cm
39.0 x 19.0 x 31.5mm 36g
Receiver FP-R8J
Receiving frequency
Intermediate frequency Power requirement Current drain
Dimensions Weight
Receiving range
: 27MHz, 53MHz Bands
72MHz Band Selectable by changing
modules. :455kHz :4.8V :
16mA : 49.0 x 42.0 x 24.0mm :52g : With FP-T8JN trans-
mitter 500m on the ground 1000m in the air
Servo FP-S121G
Control system Operating angle Power requirement Current drain
Output torque
Dimensions Weight
+ pulse width control 160° or greater
4.8V 8mA (when stopped)
3.5kg-cm
39.0 x 19.0 x 31.5mm 36g
Charger FBC-2 or FBC-2L
Input voltage
Output
: AC110V,50/60Hz,
4VA
: Tx side 9.6V 45mA
Rx side 4.8V 45mA
NiCd battery for receiver servo
NR-4H
Voltage Dimensions
Weight
: 4.8V 4/500mAH : 32.5 x 32.5 x 57.0mm :
115g
Page 5
• TRANSMITTER CONTROLS
Fig.1
Page 6
Purpose of switches and trimmers in Fig. 2
The numbers in circles represent the channel number. The channel numbers on the front of the transmitter correspond to the receiver connector output numbers.
Aileron reverse switch
NORM-REV This switch reverses the di­rection of rotation of the aileron servo.
Elevator reverse switch
NORM-REV This switch reverses the di-
rection of operation of the elevator servo.
Throttle reverse switch
NORM-REV This switch reverses the di-
rection of operation of the throttle servo.
Rudder reverse switch
NORM-REV This switch reverses the di-
rection of operation of the rudder servo. ALT (Adjustable Limit Throttle) This switch selects whether the operating angle is varied at the HIGH side of the stick or the
LOW side of the stick when the maximum
operating angle of the servo is adjusted with
the throttle trim. Normally use at the LOW side. Aileron ATV (Adjustable Travel Volume) R
AIL, ATV-R This trimmer adjusts the aileron travel in the right direction when the aileron reverse switch is in the NORM
position.
Travel is continuously variable from 50%
to 100% of the total travel range.
Aileron ATVL
AIL, ATV-L This trimmer adjusts the
aileron travel in the left direction when the
aileron reverse switch is in the NORM
position. Adjustment range is the same as that of above.
Aileron dual trimmer
AIL DUAL This trimmer adjusts the aileron travel when the aileron dual rate is ON. (This trimmer is adjusted at kick down.) Travel is continuously variable from 40% to 100% of the total travel range.
Page 7
Throttle button trimmer
THROT The throttle servo is operated at
the position set by this trimmer by push­ing the throttle button. The total travel can be set at throttle stick
neutral position. Roll A button trimmer 1 ROLL (A) Roll B button trimmer 1 ROLL (B)
This trimmer sets the aileron travel when the roll button is pushed.
The travel is variable over the entire travel
range at aileron stick neutral. Snap roll A button aileron trimmer SNAP ROLL (A) 1 AIL Snap roll B button aileron trimmer SNAP ROLL (B) 1 AIL These trimmers set the aileron travel when the snap roll button is pushed. The travel can be varied over the entire travel range. Snap roll A button elevator trimmer SNAP ROLL(A) 2 ELEV Snap roll B button elevator trimmer SNAP ROLL(B-> 2 ELEV This trimmer sets the elevator travel in the same manner as trimmers and Snap roll A button rudder trimmer SNAP ROLL(A) RUD Snap roll B button rudder trimmer SNAP ROLL (B) RUD These trimmers set the rudder travel in the same manner as trimmer and
Elevator, flap MIX trimmer
MIX ELEV-> FLAP
This trimmer adjusts the amount of mixing
from the elevator to the flap.
The travel can be varied over the entire travel range at flap channel neutral. Spoiler (channel 7), flap (channel 6) MIX
trimmer
MIX SPOIL-> FLAP
This trimmer adjusts the amount of mixing from the spoiler to the flap.
Travel range is the same as that of trimmer Elevator dual trimmer
ELEV. DUAL
This trimmer adjusts the travel at elevator dual rate ON. The travel is continuously variable from 40% to 100% of the total travel range. Channel 6 flap neutral trimmer MIX NEUTRAL This
trimmer nel 7) and flap (channel 6) mixing. Neutral adjustment is possible in all spoiler states.
sets
flap neutral at spoiler (chan-
Elevator ATV U trimmer
ELEV. ATV-U This trimmer adjusts the elevator travel in the UP direction when the elevator reverse switch is in the NORM position. Adjustment range is the same as that of the aileron ATV Elevator ATV D trimmer
ELEV. ATV-D
This trimmer adjusts the elevator travel in the DOWN direction when the elevator reverse switch is in the NORM position. Adjustment range is the same as that of the aileron ATV Rudder ATV R trimmer
RUD. ATV-R
This trimmer adjusts the rudder travel in the right
direction when the rudder
is in the NORM position. Adjustment range is
the same as that of aileron ATV Rudder ATV L trimmer
RUD. ATV-L
This trimmer adjusts the rudder travel in left direction when the rudder reverse switch is in the NORM position. Adjustment range is the same as that of aileron ATV
Transmitter module The frequency, frequency band and modula­tion method can be changed by changing this module. The method of changing this module is shown in Fig. 12.
Trimmer panel This panel is removed by sliding it in the di­rection of the OPEN arrow.
reverse
switch
Page 8
• USING THE TRANSMITTER
Before using the transmitter, charge the NiCd battery.
•Connect the DIN connector of the FBC-2L charger to the charging jack of the transmitter and the 3P connector to the receiver servo NiCd battery (NR-4H), and plug the charger into an AC110V outlet as shown in Fig. 3. The Tx, Rx charging indicator LED illuminate to indicate that the battery is being charged.
•The charging time is normally 15 hours. But if the battery has not be used for some time, charge it for about 20 hours. (If the battery is left in the discharged state for a long time, its capacity and life will be adversely affected.)
•The
transmitter and
be charged simultaneously, or independently.
•The battery can usually be used about 10 times at a rate of about 10 minutes/time.
•Extend the antenna. Pull the counterclockwise until it locks as shown in Fig. 4.
•If the antenna is not locked, it will not be con­nected to the internal circuitry.
•The power switch is a lock type switch. When it is set to ON while pulling it forward, the level meter pointer will deflect, indicating the antenna output. The transmitter is OK if the pointer deflects to graduation 7 with the antenna ex­tended fully. The pointer indication is different when the antenna is contracted and when it is extended fully. [The pointer indication will also be different when the antenna is grasped with your hand and when it is not grasped.) When the antenna is contracted, the transmitter does not deliver an output even though the level meter pointer deflects. DO NOT USE THE TRANSMITTER UNDER THIS STATE.
•Push the battery check switch. The level meter pointer will indicate the battery voltage at this time. The battery is OK if the meter pointer de­flects to within the green zone. If the pointer de­flects to near the boundary between the green and red zones, recharge the battery.
•Using the D.S.C. function The by connecting the D.S.C. cord furnished with the set to the connector (Fig. 1 ) of the trans­mitter and the C terminal of the receiver. This allows adjustment of the aircraft while awaiting your turn to fly.
first
servos
stage
can
receiver
of the antenna up and
be
operated
NiCd batteries
without
can
turn
transmitting
it
(Use this function with the power switch of the transmitter set to the OFF position. Although the D.S.C. Function will be operative when the power switch is set to ON, it will be meaningless.)
•Using dual travel (DR —aileron, DR —elevator) When the dual travel switch is set to ON, the steering angle becomes small (within the range indicated by the hatched lines in Fig. 5). The steering angle can be varied from 40% (minimum) to 100% (maximum) of the total steering angle by adjusting the trimmer
next to the switch with a screwdriver. The dual switch should normally be set to OFF. However
on the trimmer panel for channel 8)
Page 9
when desiring to make the spin and other steering angles large, set it to ON and adjust the horn, ad­justers, and trimmers for level flight. When the dual travel switch is set to OFF, kick up is set, and the steering angle becomes large.
•Aileron, DOWN) angle adjustment
[ATV (Adjustable Travel Volume)] The aileron, elevator, and rudder steering angles can be made small within the range of the hatched lines in Fig. 6. When the aileron right roll and left roll rates are different, they can be made the same by adjusting
the and trimmers of Fig. 2.
This also applies to the elevator and rudder. elevator UP and DOWN difference can also provided for easier flying.
The elevator ATV trimmers are
The rudder ATV trimmers are
•Elevator and flap mixing adjustment Connect the flap servo to channel 6 of the receiver. When the MIX switch of Fig. 1 is set to the elevator and flaps are mixed. Set the steering
elevator,
and rudder
of Fig. 2.
of
right
Fig. 2.
and left (UP.
An
be
point, linkage is extremely simple. Dual travel is operative even at elevator and flap mixing. Use the CH6 flap trim lever of Fig. 1 to adjust the flap neutral position. Use this trimmer is the same manner as a trim lever (aileron trim and elevator trim). Mixing is released when the MIX switch is set to the center position (• mark). The flap neutral position is not changed at this time.
(NOTE) Channel 6 is for the flaps, but can also be
used as a spare channel. However, since the travel range is slightly narrow, adjust the linkage.
•Adjustment when mixing spoiler, etc. and flaps (When using the flaps and spoiler as an air brake)
Connect the flap servo to channel 6 of the re­ceiver and the spoiler servo to channel 7. When the MIX switch of Fig. 1 is set to
. the spoiler is mixed with the flaps. When the CH7 switch of Fig. 1 is set to , the spoiler and flaps are operated simultaneously. The amount of mixing at this time is adjusted with the trimmer of Fig. 2. The direction and amount can also be set. When the MIX switch is set from RELEASE to , the flap neutral position may deviate.
If this occurs, adjust the NEUTRAL trimmer of Fig. 2 so that the flap neutral position does not change when the MIX switch is set to any position.
Page 10
(NOTE) Always release
CH7 switch (spoiler) of Fig. 1 before releasing MIX switch when releasing mixing.
If these switches are released in the reverse order, only the flaps will be released and the spoiler will remain open, placing the aircraft into an extremely dangerous state.
•Roll
button
A (Fig. 1 ROLL[A]) The ailerons can be stopped at an arbitrary posi­tion while this button is being pushed. This is used at slow roll, etc. Adjust the steering angle with the ROLL (A) trimmer of Fig. 2. Both right roll and left roll can be adjusted. Neutral adjustment is also pos­sible. (At neutral the button has no effect even if pushed.)
•Roll button B (Fig. 1 ROLL[B]) This is the same as roll button A. Adjust the steering angle with the ROLL(B) trimmer of Fig. 2. (Using roll button A for right roll and roll button B for left roll is extremely convenient.)
•Throttle button (Fig. 1 THROT) The throttle can be stopped at an arbitrary posi­tion while this button is being pushed at snap roll, etc. Adjust by setting the throttle stick HIGH, and pushing the button. Setting the engine to medium throttle with the
THROT trimmer of Fig. 2 is perfect.
•Snap roll button A (Fig. 1 S.ROLL[A]) The aircraft can be placed into a snap roll by
simply pushing this button. The
direction and amount
of aileron, elevator, and rudder can be freely switched with the trimmer of Fig. 2. Each servo can also be adjusted to neutral. (At neutral the servos
are not operated even if
you push the button.)
•Snap roll B (Fig. 1 S.ROLL[B]) This is similar to snap roll A. The direction and amount of aileron, elevator, and rudder are set with the trimmer of Fig. 2.
Using snap roll button A for right snap roll and snap roll button B for left snap roll is extremely convenient. Adjust to match the aircraft. The snap roll buttons may also be used as spin buttons.
•Using the aileron, elevator, throttle, and rudder reverses (Devices which reverse the
direction of operation of the servos) There must
be no play in the aircraft linkage direction. The switches are
built
into
the
module
case
of
the transmitter.
Aileron Elevator Throttle Rudder
•Throttle ALT (Adjustable Limit Throttle) is a new mechanism that trims only the LOW side of the throttle control. The trim lever is almost inoperative at the throttle
stick HIGH side, but is operative at the throttle
stick LOW side. The LOW side can be set to any
desired position with the trim lever by setting the throttle rod at the engine HIGH side. This is very convenient because the HIGH side remains un­changed even when the trim lever is operated.
Always use with this switch set to the LOW side.
•The
elevator
trim
lever
is
at the left
side
and
the throttle trim lever is at the right side. The elevator trim lever has been placed at the left side because the right side (aileron, elevator) has priority in MODE II.
to
(NOTE) The buttons should be set to neutral be-
fore you are completely familiar with the set. Use these buttons only after you have become completely familiar with the set.
Page 11
• USING THE RECEIVER SERVOS
Aileron servo
Page 12
•The
receiver Stick the channel tabs furnished with the set the servo lead wires for identification.
•Use an extension cord matched to the fuselage.
•Wrap the receiver in sponge and fasten to the fuselage with rubber bands.
•Install the receiver so that the antenna wire is as straight as possible.
•Mount
•Mount
hinges, and other steering mechanisms operated smoothly.
Be especially careful when the steering angle is large.
•When mounting the landing gear servo, match the landing gear stroke and the landing gear servo
horn stroke precisely so that pulling and pushing are neither excessive nor insufficient.
•Install by wrapping it in sponge and attaching it to the
fuselage
receiver.
the the
the
with
servo
servos
receiver
channel order
as
shown
in
so
that the flexible
servo
NiCd battery
rubber bands,
is
Fig.
the
shown
9.
same
in
Fig.
wire,
(NR-4H)
as
8. to
the
•All the
•All the
•Pay careful attention to noise.
•When used in seaplanes and boats, pay careful
servos
can be controlled
(direct servo control system) by applying the signals form the transmitter to terminal C of the receiver. In this case the transmitter current drain will drop to about 1/4 that when transmitting. Connect the intermediate cord with lug to ter­minal C and fastening it to the side of the fuselage as shown in Fig. 8 beforehand.
servos, designed and manufactured to the same standards and can be used at any channel.
This set is especially resistant to noise, but is not completely noise-free. The use of noiseless parts is recommended.
attention to waterproofing. The servos are waterproof, but the receiver, con­nectors, and NiCd battery are not. Place these components in a vinyl bag and amply waterproof the entire mechanism chamber.
except
the landing
from
gear
the
servo,
receiver
are
Page 13
No.
1 2 3 4
5 6 7 8 9
10 11
12 13
14 15
16 17 18
19 20 21 22 23 24
25 26
27
Details Upper case Middle case Bottom case Pinion motor
1 st gear 2nd gear 3rd gear Final gear 2nd shaft Intermediate
shaft Output shaft Spacer washer Seal ring Radial ball
bearing Pan head screw Truss screw Motor Slider Volume Grommet Name plate Fiber washer Servo horn Toothed washer Phillips pan
head screw E ring 0 ring
Quantity
1 1 1 1 1 1 1 1 1
1 1
1
1 2 4
2
1
1
1
1
1
2
1
1
1
Remarks
M2x24 M2x5 16
M2 M2x5
Fig.
11
Page 14
• MODULES
The frequency, frequency band, and modulation (AM, FM) of the J Module Series can be changed. The transmitting and receiving modules are availa­ble as a pair.
EXAMPLE 1. : Switching from 27.195MHz to
27.045MHz Replace both the transmitting and receiving modules with the MHz RF module.
EXAMPLE 2. : Switching from 27.145MHz to
72.080MHz Replace both the transmitting and receiving MHz RF module.
EXAMPLE 3. : Switching from 72.240MHz
53.400MHz (AM) Replace both the transmitting and receiving modules with the 53.400 MHz (AM) RF module.
EXAMPLE 4. : Switching from 72.080MHz to
53.200MHz (FM) Replace both the transmitting and receiving modules with the 53.200 MHz (FM) RF module, and also replace the receiver with an FM receiver.
EXAMPLE 5.
: Switching
to 53.500MHz (AM) Replace both the transmitting and receiving modules with the 53.500
MHz (AM) RF module, and replace
the receiver with an AM receiver.
modules
with
from 53.100MHz
the
27.045
72.080
(FM)
to
Page 15
GUARANTEE
Your NEW FUTABA Digital Proportional R/C system is guaranteed against defects in workmanship and material for 180 days from the date of purchase when the attached registration card is returned to us within ten days of purchase.
This Guarantee is null and void if the R/C system has been improperly handled, damaged in a crash, or tampered with and does not cover the replacement of plastic housings or electronic components damaged due to the use of improper voltages.
When service is required, please take your equipment to your local authorized service station or ship it directly to us. All postage, shipping, and insurance changes must be paid by the user.
This guarantee only applies to the continental U.S.A., Hawaii, and Alaska.
FACTORY REPAIR SERVICE
To insure prompt service, please follow the instructions given below.
1. Charge the batteries for at least 18 hours prior to shipment.
2. Return the system only. Not your complete installation. Remove the servos from their mounts and remove the foam padding from the receiver.
3. Plugs or other modifications which interfere with factory test procedures will be returned to factory standard at your expense.
4. Carefully pack all components individually, using sufficient packing material to prevent damage
during shipment.
5. Include a brief but thorough explanation of all problems and service required and tape it to the back of the transmitter. Place a label describing the functions of the servo on each servo.
6.
Be
sure
to
include
7. Include a packing list of all items being returned, and double check to make sure that all items are packed.
8. Upon receipt of damaged equipment at the FUTABA factory, an estimate of the cost of repair
will
be
sent
payment.
This factory repair service applies only to the continental U.S.A., Hawaii, and Alaska.
to
you.
your
Your
full
address
equipment
and
will
zip
code inside the box
then
be
repaired and returned
as
well
as
to
on
you
the outside.
upon
receipt
of
Page 16
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