FUTABA FP-8SGAP User manual

Futaba
DIGITAL PROPORTIONAL
RADIO CONTROL
PCM
PULSE CODE MODULATION SYSTEM
INSTRUCTION MANUAL
FP-8SGAP
PCM 8 CHANNELS,
FOR F3AAIRCRAFT
D60354

Thankyou for purchasing a Futaba
digital proportional radio control set.
Please read this manual carefully before using your set.

TABLE OF CONTENTS INDEX FOR TRIMMER PANEL FUNCTIONS
GENERAL INFORMATION
Features ............................
Contents and Ratings ....................
Glossary of Terms ......................
Basic Transmitter Controls .................
Batteries and Charging Instructions ............
Tachometer/Timer Operation .................
Receiver and Servos ......................
FP S130 and FP-S130G Exploded Views ..........
Splined Horns..........................
ADJUSTMENTS AND FLIGHT TECHNIQUES
Basic Linkages and Installation ...............
Using ATV (Adjustable Travel Volume) ...........
2ND ATV (Conventional) ...................
Servo Reversing Switches ...................
Using Dual Rate (Aileron, Elevator, and Rudder) .....
Rudder Auto Dual
Rate ....................
Using VTR (Variable Trace Ratio) ..............
Suggestions on ATV, D/R. and VTR .............
Using ATL (Adjustable Throttle Limit) ...........
FS (Fail Safe) and HOLD Functions .............
BFS (Battery Fail Safe) and BFS Memory .........
Servo Test Functions ......................
Aircraft with Variable Pitch Prop ..............
Throttle Position Trimmer ..................
Aircraft with Flaps .......................
Elevator/Flap Mixing .....................
Flap/Elevator Mixing (Pre-Set Flaps and Elev. Trim)....
Aircraft with Flaps and Spoilers (Airbrake) .........
Flap Trim Function ......................
Snap Roll Switch ........................
Programmable Mixing and Examples. ............
Mutual (Bi-directional) Mixing (FLPRON,
ELEVN, V TAIL, DIFF) ...................
1 Aileron Dual Rate 1 Trimmer ..............
2 Aileron Dual Rate 2 Trimmer ..............
3 Aileron Linear/VTR Safety Switch ..........
4 Throttle Delay Trimmer .................
5 Pitch Delay Trimmer ...................
6 Throttle/Pitch Mixing Trimmer .............
7 Throttle/Pitch Mixing Safety Switch ..........
8 Throttle Position Trimmer ...............
9 Elevator Flap Mixing Trimmer .............
10 Elevator Flap Mixing Safety Switch ..........
11 & 12 Programmable Mixing Rate Trimmers .....
13 Slave Channel Mixing Board ..............
14 Master Channel Mixing Board ..............
15 Aileron Differential Trimmer ..............
16 ELEVN/V. Tail Mixing Switch .............
17 FLPRON/DIFF Mixing Switch .............
18 Flap Switch ........................
19 Airbrake Elevator Trimmer ...............
20 Airbrake Flap Trimmer .................
21 Rudder Dual Rate Trimmer ...............
22 Rudder Linear/VTR Safety Switch ..........
23 Elevator Dual Rate Trimmer ..............
24 Elevator Linear/VTR Safety Switch ..........
25-28 Snap Roll Timer Setting Trimmers (Optional) . .
29 Snap Roll Safety Switch .................
30 Switch 16 Function Select Switch ...........
31 Automatic Dual Rate Rudder Safety Switch ......
32 Flap, Spoiler Elevator Mixing Switch ..........
33 Throttle Flap, Spoiler Elevator Mixing Switch . . . . ,
34-35 Aileron
2ND ATV Trimmers .............
36-37 Elevator 2ND ATV Trimmer .............
38-45 Servo Reversing Switches ...............
46-47 ATV/FS Buttons ....................
48 Channel Select Switch ...................
49 Function Select Switch ..................
Switch or Description Ref. Page
Trimmer
Number
NOTE:
Please read and follow instructions for installation and usage in their entirety and
follow carefully. Failure to follow instructions could result in serious property
damage and/or personal injury. This system is intended for use by experienced
R/C hobbyists. Beginners should seek expert advice and Assistance before operat-
ing this system.

•FEATURES
The FP-8SGAP was specially developed to use PCM (pulse code modulation) for FAI
RC aerobatics F3A aircraft. It is an extremely noise and dead-point resistant digital
proportional RC set with a microprocessor in the transmitter and the receiver. Please
read this manual before using your set.
TRANSMITTERFP-T8SGAP
• RF module system. The frequency band can be
changed with one touch.
• DSC (Direct Servo Controller) allows operation
of the servos without turning on the transmitter.
Wire operation is possible by using the special
cord supplied (FSC.1)
•Servo reversing switch for all channels
allows
reversing of the servos with the flip of a switch.
• Dual rate or non-linear VTR (variable trace
ratio) aileron, elevator, and rudder. Two-stage
dual rate on aileron.
• Rudder auto dual rate. Rudder dual rate is turn-
ed on and off automatically with operation of
the throttle stick.
• Newly designed slantable open gimbal sticks
provide maximum operation feel. Stick angle
and spring strength can be adjusted.
• Non-slip adjustable lever head. The stick length
can be adjusted by turning the knob head.
• New throttle -> pitch control mixing is perfect
for variable pitch propeller which maximizes
engine power and propeller efficiency.
•Mutual mixing function allows aileron + eleva-
tor, aileron + flaps, and aileron + rudder mixing
and aileron differential operation.
• Elevator -> flap mixing is especially advantageous
incircleaerobatics.
• Flap, spoiler -> elevator mixing allows control of
the aircraft attitude while using the air brake
(flap, spoiler).
• Throttle -> (flap, spoiler) -> elevator mixing al-
lows enhancement of the air braking effect by
throttle stick operation when diving and landing.
• Programmable mixing function permits mixing
with the desired channel.
• Four-function snap roll switch (timer is option-
al)
• Idle-up lever, the engine idling speed can be
independently adjusted during throttle -> pitch
control mixing.
• New single-chip microprocessor allows one-touch
fail safe setting and introduction of an automatic
transmission system which eliminates the need
for fail safe setting at the beginning of each
flight and improves safety.
•Pitch control lever. HIGH side pitch of variable
pitch propeller can be adjusted during throttle ->
pitch control mixing.
• New ATV (Adjustable Travel Volume) on all
channels allows independent adjustment of servo
left, right, up, and down throw.
•Second ATV. Besides new pushbutton ATV on
aileron and elevator, conventional trimmer ATV
is also installed.
• Monitor lamp comes on when throttle -> flap,
spoiler -> elevator mixing or throttle -> pitch
control mixing and flap, spoiler -> elevator mix-
ing and snap roll are set and goes out when they
are in use.
• Fail-safe switch (function OFF switch) is provid-
ed for each function so that only the desired
functions need be turned on.
•Throttle ATL (Adjustable Throttle Limiter)
makes throttle linkage simple and positive.
• Two servo test functions. A slow sweep to
check
neutral characteristic, trackability cycle servo to
test servo operation.
•Tachometer/timer with built-in tachometer, up
timer, down timer, integrating timers, and bat-
tery alarm functions.
• Built-in power error back-up circuit. When the
internal Nicd battery approaches the fully dis-
charged state, an LED flashes to indicate that
the memories presetted (memory, ATV, FS,
etc.) are gone. Please charge battery and set all
memory functions again.
• Highest quality extruded aluminum case. So-
phisticated transmitter design gives easy fitness
and comfortable feeling to your hands.
• Neck strap supplied as a standard accessory. The
numerous functions of the transmitter can be
easily performed by supporting the transmitter
from your neck.

RECEIVER FP-R118GP
•The receiver of this set is a miniature PCM re-
ceiver in which the highest reliability has been
pursued. It is the first R/C receiver in the world
to incorporate the newest computer technology.
• Miniature PCM receiver with high speed single
microprocessor. Resistance to adjacent band and
spark noise interference has been increased by
one full order of magnitude.
• Microprocessor servo hold function eliminates
erroneous operation
when a "dead point" area
isentered.
• Microprocessor provides fail safe and battery fail
safe functions for greater safety.
• Error lamp display allows checking of the receiv-
er operating state.
• DC-DC converter in the power supply improves
low-voltage operation characteristics.
• High sensitivity design with RF amplifier.
• Ultra narrow-band ceramic filter and PCM sys-
tem are invulnerable to adjacent band inter-
ference.
• Gold plated connector pins eliminate poor con-
tact. Polarized housing improves reliability
against shock and vibration.
• DSC circuit. Each servo can be controlled from
the transmitter without turning on the transmit-
ter by connecting the transmitter directly to the
C terminal.
SERVO FP-S130
•Small, double ball bearing, water-tight & dust-
tight servo. High output torque 55.6 oz-in (5kg-
cm), high-speed .24sec/60 .
• New indirect drive potentiometer improves
vibration and shock resistance and neutral
precision.
• Futaba low-power custom 1C provides high start-
ing torque, narrow dead band, and excellent
trackability.
• Fiberglass reinforced PBT (polybutylene ter-
ephthalate) molded servo case is mechanically
strong and invulnerable to glow fuel.
• Strong polyacetal resin ultra-precision servo gear
features smooth operation, positive neutral, and
verylittle backlash.
• Fiberglass reinforced epoxy resin PC board with
thru-the-hole plating improves servo amp vibra-
tion and shock resistance.
•Thick gold plated connector pins ensure positive
contact and improve reliability against shock and
vibration. The connector housing is polarized to
prevent reverse insertion.
• Six special adjustable splined horns.
SERVO FP-S130G
•Small retractable landing gear servo with high
class 5-pole micromotor. High output torque
4.7kg-cm, high-speed 0.34sec/60°, waterproof
type.
•Since forward/reverse operation is controlled by
the pulse width of the signal generated by turn-
ing the transmitter snap switch on and off, the
motor stops at the end of its throw in either
direction.
• Unlike other proportional servos, motor drive
current does not flow when the servo is stopped
even if a load is applied. Thus current drain is
extremely low.
• Fiberglass reinforced PBT (polybutylene ter-
ephthalate) injection molded servo case is me-
chanically strong and invulnerable to glow fuel.
•Strong polyacetal resin ultra-precision servo gear
features smooth operation, positive neutral, and
very little backlash.
• Fiberglass reinforced epoxy resin PC board with
thru-the-hole plating improves servo amp vibra-
tion and shock resistance.
•Thick gold plated connector pins ensure positive
contact and improve reliability against shock and
vibration. The connector housing is polarized to
prevent reverse insertion.

•CONTENTS AND RATINGS
Ratings and specifications are subject to change without prior notice.
Model
Transmitter
Receiver
Servos
Switch
Nicd battery
Accessories
FP-8SGAP
FP-T8SGAP x 1 with module FP-TF-FM
FP-R118GPx 1
FP-S130x4
SWH-5x 1 (R4-SWJx 1)
NR-4J x 1
Battery charger, landing gear adaptor, DSC cord, CHG adaptor, DSC-CHG
cord, servo tray, frequency flag, spare horn, neck strap, screws
Transmitter FP-T8SGAP ReceiverFP-R118GP
Operating system
Transmitting
frequency
Modulation
Power requirement
Current drain
Chosen
band
: Two-stick, 8 channels for
F3A pattern
: 50/53MHz BANDS
72/75MHz BANDS
53MHz <-> 72MHz
Frequency change to any of
above bands is possible by
merely changing RF module.
: PCM, FM
: 9.6V 8/500mAH internal
Nicd battery
: 250mA
Receiving frequency
Intermediate
frequency
Power requirement
Current drain
Dimensions
Weight
Receiving range
50/53MHz BANDS
72/75MHz BANDS
455kHz
Chosen
band
4.8V Nicd battery (shared
with servo)
42mA (4.8V reception)
2.23 x 1.65x0.94 in
(57 x 52 x 24mm)
1.85oz (53g)
500m on the ground
1000m in the air
When FP-T8SGAP used.
(At the best radio wave con-
dition of environment)
ServoFP-S130 LandingGearServo FP-S130G (Option)
Control system
Operating angle
Power requirement
Currentdrain
Output torque
Operatingspeed
Dimensions
Weight
+pulse width control, 1520
uS.N
One side 45° or greater (in-
cluding trim)
4.8V (shared with receiver)
5mA (at idle)
55.6oz.in (4kg-cm)
0.24 sec/60°
1.52x0.77 x 1.36 in
(38.5x 19.5x34.5mm)
1.47oz (42g)
Control system
Operating angle
Power requirement
Currentdrain
Output torque
Operatingspeed
Dimensions
Weight
+pulse width control
Rotary approx 160°
4.8V (shared with receiver)
8mA (at idle)
65.3oz.in (4.7kg-cm)
0.34 sec/60°
1.52 x 0.77 x 1.36 in
(38.5 x 19.5 x 34.5mm)
1.48oz (42g)
BatteryCharger FBC-8B(2) ReceiverServo Nicd Battery NR-4J
Input voltage
Output
:120VAC,50/60Hz
: TX side 9.6V/45mA
RX side 4.8V/45mA
Voltage
Dimensions
Weight
: 4.8V, 4/500mAH
: 2.01 x 2.28 x 0.59 in
(51 x 58 x 15mm)
: 3.35oz (95g)

•GLOSSARY OF TERMS
NOTE: Please take the time to familiarize yourself with the terms and abbreviations
below. They will be used throughout the instructions and are important in understand-
ing the operation and potential of your system.
PCM (Pulse Code Modulation)
Pulse Code Modulation utilizes a precise digital
code to convey information from the transmitter
encoder to the receiver. This state of the art meth-
od makes many of the sophisticated functions of
the FP-8SGAP possible, as well as providing far
superior immunity to noise and interference than
is possible with conventional encoding methods.
ATV (Adjustable Travel Volume)
This feature allows independent adjustment of
servo travel in each direction. ATV is sometimes
referred to as "endpoint adjustment". Two dif-
ferent types of ATV are standard with this system,
(1) Pushbutton or Programmed (Memory) ATV
and (2) 2nd ATV (Conventional).
MEMORY ATV
This type is available on all eight channels. These
adjustments are stored in the transmitter memory
circuit and are retained when the power switch is
turned OFF. They are lost however, if the trans-
mitter Nicd batteries reach full discharge.
2ND ATV
Available on Aileron (CH 1) and Elevator (CH 2).
This is the conventional type ATV which is set by
using trimmer pots on the transmitter back panel.
These settings are NOT affected if the transmitter
batteries are discharged.
DUAL RATE
Rate switches allow the pilot to select different
servo travel limits (for varying control sensitivity)
in flight. Servo travel is affected equally in both
directions from center.
SAFETY (ACT/INHIB) SWITCHES
These switches, located on the transmitter trimmer
panel allow mixing and certain other functions to
be deactivated when not desired. When the Safety
Switches are set to the INHIB position, the func-
tion will remain OFF even if the transmitter con-
trolswitch issetto ON.
VTR (VARIABLE TRACE RATIO)
This is a special type of non-linear control re-
sponse. When VTR is used, servo travel is normal
and linear up to about 80 percent of the transmit-
ter control stick movement where the servo travel
is abruptly increased to a higher rate (both rates
adjustable). This allows a normal feel for most fly-
ing with extra movement available for emergencies
and certain aerobatic maneuvers. Another way to
think of this function is as "automatic Dual Rate".
SERVO REVERSING
This function allows the modeler to reverse the
direction of servo movement (in relation to con-
trol stick movement) for various installation re-
quirements. This can be done by conveniently
flipping a switch on the trimmer panel. Servo
travel and neutral position are not affected.
BFS
(Battery Fail Safe)
This function provides a warning to the flyer when
airborne battery voltage reaches a critically low
level by moving the throttle servo to medium slow
or slow position.
ATL (Adjustable Throttle Limit)
This feature makes adjusting the throttle linkage
much easier. The throttle trim lever affects only
the LOW or IDLE position and not the HIGH
throttle servo position. Therefore, the linkage can
be set for proper opening at high throttle and the
trim lever used to set the proper idle speed with-
out changing the maximum opening.
MIXING
In general, mixing functions allow two or more
different channels to be operated by moving a
single transmitter control. Many useful and versa-
tile functions are made possible in this manner.
Three types of mixing functions are provided.
(1) Unidirectional mixing — This function allows
one or more channels to be "slaved" to a "master"
channel. Movement of the master channel control
causes movement of both master and slaved servos
simultaneously. Operation of the slave channel
control however, does not cause movement of the
master channel servo. An example is Aileron/Rud-
der mixing (see page 33) where the Rudder is
slaved to Ailerons for coordinated turns.
(2) Mutual (Bi-Directional) Mixing — With this
type of mixing, two channels are mixed so that
operation of the control for either channel causes
movement of both servos. This is useful in provid-
ing sophisticated functions such as V-tail opera-
tion, flaprons, and elevons on tailless designs.
(3) Switch-Activated Mixing — Two or more
channels can be programmed so that the servos
involved move to a preset position when a trans-
mitter control switch is pulled or button pushed.
Snap roll switches, roll buttons, and pre-set flap
switches are examples of this type of mixing.

PROGRAMMED MIXING FAIL SAFE
Unidirectional mixing of any two channels desired
is possible using the pin board and jumper con-
nectors on the transmitter back panel. Either chan-
nel may be designated as "master" or "slave"
DSC (Direct Servo Control)
Operation of the entire system with the transmit-
ter switch in OFF position is possible using the
DSC cord. This is useful for checking and adjusting
control movements on the ground while someone
else is flying on your frequency.
The Fail Safe function moves servos to a pre-set
position if the transmitter signal is lost or inter-
rupted by strong interferrence. The servos will be
held in the pre-set position until a proper signal is
again received at which time Fail Safe is released.
HOLD
The Hold function holds servos at the same posi-
tion as immediately prior to signal interruption.
Holdisreleasedwhenapropersignalisresumed.
•BASICTRANSMITTERCONTROLS
The servo reversing switches are assumed to be in the normal position in the descrip-
tions in this section. When the reversing switches are in the reverse position, servo
operation is the opposite of that described here.
Aileron stick Controlstheailerons.
Controls the elevators.
Controls the throttle.
Controls the rudder.
Elevator stick
Throttle stick
Rudder stick
Landing gear switch Controls the landing gear.
Flap and flap trim control (CH6) knob
Spoiler (CH7) control knob
Pitch control (CH8) lever
and pitch control
HIGH side trimmer
Idle-up lever
Flap, spoiler -> elevator (6, 7 -> 2) mixing ON-
OFF switch
Throttle -> (flap, spoiler) -> elevator
(3 -> 6, 7 ->
2) mixing / Throttle -> pitch control mixing
ON-OFF switch
Elevator -> flap (2 -> 6) mixing ON-OFF switch
Snap Roll ON-OFF switch (self off)
Aileron dual rate switch (2-stage)
Elevator dual rate switch
Rudder dual rate/Programmable mixing ON-
OFFswitch
Aileron trim lever
Elevator trim lever
19 Throttle trim lever with ATL
20 Rudder trim lever
21Tachometer/timer
The tachometer/timer has the following func-
tions:
7. TACHOMETER
• Measurement by external sensor.
• Two blade propeller specifications:
LOW range 100 to 30,000 rpm
Error 100 rpm
HIGH range 100 to 60,000 rpm
Error 200 rpm
2. UP TIMER
• 0 to 60 minutes with seconds display.
3. DOWN TIMER
• 60 to 0 minutes with seconds display.
4. INTEGRATING TIMER
• 0 to 60 hours with minutes display.
5. BATTERY ALARM
• Alarm sounds when the transmitter Nicd
batteries approach the usage limit.

Monitor Lamps
IMPORTANT: In all instructions on control functions. Items designated by a number inside a circle
(Forexample 10 ) are transmittercontrols normally accessable and operated in flight.
Items designated by a number within a box (For example 10 ) are adjustment functions not operated
while in flight.
•Lamp A Power Monitor
• When the power switch 23 is set to ON, this lamp flashes on
briefly and then goes out momentarily as the Fail Safe data is auto-
matically matically transmitted to the receiver. Fail Safe data is
transmitted every 60 seconds at which time the lamp also goes out
momentarily. If the transmitter Nicd battery nears full discharge,
this lamp starts blinking, indicating that the power error backup
function is activated. When this occurs, transmitter memory func-
tion settings are lost and must be reset.
Lamp B3-> 6, 7 -> 2 / 3 -> 8 Mix
This lamp comes on when Safety Switch 7 and/or 33 is set to
ACT position, indicating that throttle — flap, spoiler -> elevator
mixing and/or throttle — pitch control mixing functions are activat-
ed. This lamp will blink when transmitter control switch II is set
to ON (placing these functions in operation).
Lamp C 6, 7 -> 2 Mix 32
• This lamp comes on when Safety Switch 32] is set to ON (flap,
spoiler — elevator mix) or CH7 OFF (flap -> elevator mix) position.
This lamp blinks when transmitter control switch 10 is set to ON.
When the power switch 23
is set to ON, lamp A will
go out momentarily.
This indicates automatic
data transmission on and is
not a failure.
Lamp D Snap Roll
•When Safety Switch 29 is set to ACT (snap roll function acti-
vated), this lamp blinks. When the Snap Roll switch 13 is pulled,
this lamp continues blinking.
Power switch
• The transmitter power ON-OFF switch is pro-
vided with a locking feature to prevent acciden-
tal movement. To operate the switch, pull the
knob gently outwards and set to the desired
position (UP-ON, DOWN=OFF).
Hook
Metal hook for the accessory neck strap.
Level meter
•This meter indicates the transmitter battery
voltage and output power.
•When the antenna 26 is extended fully and
the power switch 23 is set to ON, the pointer
should move to the white zone.
• If the transmitter RF Module 32 is not in-
stalled, the meter pointer will not move.
• If the meter pointer moves to the red zone,
indicating that the Nicd battery voltage is low,
the signal range will become shorter. If the
Tachometer/timer 21 power switch is ON, the
battery alarm function will operate after about
one more flight. When the meter pointer stops
at the boundary between the white and red
zones, recharge the battery.
Antenna
Strong 1m 10cm telescoping antenna. Extend
the antenna to its full height when using the
transmitter. The antenna will lock in place with
a click when pulled up to its full height.
Carrying handle
Tachometer sensor connector
• When not using this connector and the charg-
ing socket 29, cover them with the rubber-
backed cover supplied to protect them against
dust.
Charging socket and DSC (Direct Servo Con-
troller) connector
•This connector is used as both the charging
socket and DSC connector. See page 10 for
charginginstructions.
Non-slip adjustable lever head
Fig. 2
Lever head Lever head
The length of the lever head can be adjusted to fit
the operator.
Unlock lever heads ,byturningthemand
in the arrow direction, and adjust the head to the
most comfortable length.

MODE I
Slantable stick adjusting screws
The angle of the stick levers can be changed.
Fig.
3
Turn this screw with a Phillips
screw-driver.
The open gimbal stick
angle can be adjusted from
about 3° to the inside to
4.5° to the outside by
turning the adjusting screw
as shown in the figure.
Adjust the stick to the
most comfortable angle.
Phillips screwdriver
The strength of the stick lever spring can be ad-
justed.
Removethese
screws,and
remove the
back cover.
Fig. 4
Fig. 5-A
Elevator
Rudder
Aileron
Turnwith aPhillips screwdriver.
The spring strength can be adjusted as desired by
removing the transmitter back cover and turning
the adjusting screw of each stick. Adjust the spring
strength for the best stick feel.
MODEII
Remove the three screws shown and remove the
transmitter righthand side panel as shown in
Fig.5-B.
Displace the side panel away from the case.
(slidedown-off)
Disconnect the power connector.
Adjust the spring tension.
Cautions
• Be sure that the PC board attached to the side
panel does not touch the transmitter case.
• Disconnect the power connector before side
panel completely off, while side down-ward,
to avoid touching with TX case.
•When the power connector is disconnected,
the memorized contents (ATV, FS, etc.) are
cleared. When flying again, reset the contents.
Elevator
Fig. 5-B
The side panel can
be removed by
removing these
three screws.
Aileron Rudder
Power connector
Transmitter RF module
• Change this module when
switching frequency bands
(50, 53, 72, and 75MHz).
A temperature rise at the
RF module section during
useisnormal.
Fig. 6
Transmitter
crystal
While pushing this tab to the
inside, pull the RF module forward.

Mini stand
• Use this stand as shown
in Figure when laying
the transmitter down.
This makes operation
easier and protects the
RF module and
transmitter back.
The 4 rubber feet
supplied can also be
installed using the
transmitter back screws.
Fail safe set button
• This pushbutton is used when
setting the Fail Safe servo
positions (FS instructions
Page 25).
Fig. 9
Back Cover
• Removal of this cover exposes the trimmer
panel. Remove as shown in Fig. 10.
Fig.
7
* NOTE: The 4 rubber feet supplied as accessories
can be installed on the transmitter back
(using the longer back cover retaining
screws) to provide additional protection.
the snap roll
when the
Snap roll
switch 13 is
used.
Fig. 8
Up-down
switching
Remove the back cover by pulling
these stoppers in the arrow direc-
tion. Fig.
10
Left-right
switching
Snap roll direction switch (R/L)
Snap roll direction switch (UP/DOWN)
• These switches control
the direction of
Trimmer Panel
•This panel contains switches, buttons, and trimmers for setting and adjusting the many versatile
transmitter functions. Use the small screwdriver supplied with the set for making adjustments.
Fig. 11

•BATTERIES AND CHARGING INSTRUCTIONS
•The Direct Servo Controller system connects
the signals from the transmitter directly to
terminal C of the receiver through a wire and
controls the servos without radiating radio-
waves. It is extremely convenient when flying
on the same band or during meets, etc.
•Make the connections shown in Fig.12. Con-
necting the special DSC.CHG cord with tab to
receiver terminal C and installing it to the side
of the aircraft fuselage is very convenient.
•When the DIN connector of the DSC cord is
connected to the DSC connector 29, the
power to the encoder inside the transmitter is
turned on. The transmitter power switch is
OFF.
• When not using the DSC, disconnect the DIN
connector.
• To operate the servos, turn on the receiver
and servo switch.
Before using your system, recharge the Nicd batteries as follows:
•Connect the DIN connector of the FBC8B (2) battery charger
to the transmitter charging socket 29 . Also connect the 3P
connector to the airborne NR-4J Nicd battery and plug the
battery charger into a 120VAC outlet as shown in Fig. 12 . The
airborne batteries can also be charged through the DSC/CHG
harness by connecting the CHG adaptor to the charger as shown
in Fig.12. In this manner, the airborne batteries can be charged
without removing them from the model.
• Normally recharge the battery for about 15 hours. If it has not
been used for some time, discharge and recharge it two or three
times and then charge it a full 15 hours.
• The transmitter and receiver Nicd batteries can be charged
together or independently.
•A fully-charged transmitter battery can be used for about 10
flights of 10 minutes each. The airborne NR-4J Nicd battery
can be used for about 6 flights when 6 servos are used and
about 4 flights when 10 servos are used.
• If the system is not to be used for some time, it should be fully
charged before storage and recharged monthly to avoid full
discharge and loss of memory settings (ATV, FS, BFS memory,
etc.).
TX (transmitter)
AC-120V
Battery charger
FBC-8B (2)
LED
Make this
connection when
using the DSC.
DSCcord
Charging
socket
and DCS
connector
RX (receiver)
Female
Install the accessory
DSC.CHG cord
Male
Antenna
Receiver
(connectorwith tab)
to the side of the
aircraft fuselage to
use the charging/DSC
socket.
DSC.CHG
cord
Female
Female
CHG
Adaptor
Female
Female
Male
Female
Male
Female
Notes:
(1) First, connect to TX Nicd and red lamp goes on.
(2) Then, connect to RX Nicd after connecting, L.E.D.
changes color from red to greenish red (orange)
which indicates that both TX and RX Nicds are
being charged.
(3) In case of separate charging, L.E.D, color will be:
RX Nicd-Green TX Nicd - Red
NR-4J
Fig. 12
• The amount of time remaining before the batteries must be
recharged can be estimated using the Integrating Timer
function of the Tachometer/Timer 21 . It is recommended
that this function be used to monitor remaining flying time.
(See Page 11 for detailed instructions.)

•TACHOMETER/TIMER OPERATION
LIQUID CRYSTAL DISPLAY
Do not press the keys too quickly.
Press them at a speed of about once
per second. |
Do not expose the display to direct sunlight
for a long time.
INTEGRATING TIMER
Blinks during counting
and stops blinkingwhen
counting stops.
UPTIMER
DOWN TIMER
TACHOMETER
Fig. 13
This switch sets the alarm time in the UP TIMER
and DOWN TIMER modes. One minute is set each
time this key is pressed. If it ispressed and held for
two seconds or longer, the time is set in 5 minute
steps.
A beeping signal begins 10 seconds before the dot
time. A beep is produced every minute to indicate
the lapse of time.
This switch is used for memorization, starting,
stopping, and clearing in the UP TIMER and
DOWN TIMER modes. In the INTEGRATING
TIMER mode, this switch acts as the reset switch.
Switches the range when used as a
tachometer. LOW - 100 to 30,000 rpm.
HIGH -100to60,000 rpm
Tachometer/timer power switch.
is displayed at the mode selected at
the MODE SEL key switch
Selects the tachometer/timer mode.
The INTEGRATING TIMER mode is selected and
is displayed when the power is turnedon,
The first time this switch is pressed, the UP TIMER
mode is selected and is displayed.
The second time it is pressed, the DOWN TIMER
mode is selected and
isdisplayed.
The third time it is pressed, the TACHOMETER
mode is selected and isdisplayed.
The fourth time this switch ispressed, the
tachometer/timer returns to the INTEGRATING
is displayed.
TIMER mode and

Make all speed measurements outdoors under
natural lighting. Accurate speed measurements
cannot be made indoors under artificial lighting
because of the affect of the 50 or 60 Hz power.
OPERATING INSTRUCTIONS
Tachometer
Set the tachometer/times POWER switch to ON.
appears on the display. Next, press the
MODE SEL key switch at the upper-right corner
three times. The display changes to and
the tachometer mode is selected. Hold the sensor
about 20 to 30 cm from the rotating propeller
(two blade). The propeller speed is displayed on
the LCD.
indicates that the propeller is rotating at
12,300 rpm. For propeller speeds up to 30,000
rpm, set the REVOLUTION RANGE switch at the
upper left-hand corner to LOW and for propeller
speeds above 30,000 rpm, set the REVOLUTION
RANGE switch to HIGH.
The speed of a three blade
propeller is displayed
value- 3x2.
The speed of a four blade propeller is 1/2 the dis-
played value.
Connect the accessory tachometer
sensor to the sensor connector
as shown above.
Sensor
Sensor
connector
Fig. 14
The speed of model boat
and car engines can also be
measured in this fashion.
Warning: Use extreme cau-
tion. There is danger of
serious injury or death.
Measure the speed of the
rotating propeller at this
point.
Sensor
Make all
measurements
under natural
lighting.
Holding the sensor too close
to a spinning propeller is
dangerous.
Draw two lines
on the flywheel
with magic ink.
Fig. 15
To measure the speed of the main rotor of a
model helicopter, measure the speed of the tail
rotor as shown in Fig.16. and calculate the exact
speed from the equation.
Tail rotor speed
Main rotor speed = ——————--—--—————————
Main rotor and tail rotor gear ratio
Sensor
Helicopter tail rotor
Fig. 16

Note do not expose the liquid crystal display to
direct sunlight for a long time.
Selects the tachometer/
timer mode.
This switch sets the
alarm time.
Memorize, start, stop,
and clear switch.
Switches the range when
used as a tachometer.
Tachometer/timer po-
wer switch.
is displayed at the
Fig. 17
mode selected at the
MODESELKEYSW.
2 UP TIMER
Set the tachometer/timer POWER switch to ON.
is displayed. Next, press the MODE.SEL
key switch at theupper right-hand corner one time.
The display changes to , and the UP
TIMER mode is selected. When the ENTER key
switch at the bottom right-hand corner is pressed, a
beep is head and the timer starts and the second
digit of the display changes every second. A beep is
produced every minute to indicate the passage of
time. To stop counting, press the ENTER key
switch again. The usage time is displayed on the dis-
play. For example, meansthat 12minutes
05 seconds had elapsed. The UP TIMER mode can
be used as a second stop watch. To clear the dis-
play, press the ENTER key switch again.
ALARM SETTING
The alarm can be set with the TIME SET key. Clear
the display, by pressing the ENTER key, then press
the TIME SET key twice.
appears on the display indicating that
two minutes was set. Next, press the ENTER key
once to memorize this two minutes. The display
changes to and is memorized. Start the
timer by pressing the ENTER key. The display
changes every second. When the display reaches
, the timer keeps ten times, every once
the power is turned off or reset. If the timer is
started without setting the time after the display
has been cleared, the previously set alarm time
remains effective. An arbitrary alarm
time up to
59minutescan beset.
3 DOWN TIMER
Set the tachometer/timer POWER switch to ON
and press the MODE SEL key twice.
appears on the display to indicate that
a second, to indicate that two minutes have
elapsed. Thereafter the timer continues to count
up to 60 minutes. If the TIME SET key is pressed
and held for two seconds or longer when memo-
rizing the alarm time, the time is set in five minute
steps and the set alarm times are memorized until
the DOWN TIMER mode was selected. Next,
press the ENTER key. The timer keeps.
appears on the display, and the display begins to
count down every second. The timer keeps every
second from 10 seconds before the end of the
count-down, the same as the UP TIMER.
TIME AND ALARM SETTING
Set the time and alarm with the TIME SET key,
the same as the UP TIMER. To set the alarm to
at the display, clear the display by
pressing the ENTER key, then press the TIME
SET key three times. Next, memorize this time
by pressing the ENTER key again. The display
begins to count down in seconds. When the dis-
play begins to count down in seconds. When the
display reaches , the timer begins to
keep every second to indicate that three minutes
have elapsed. If the TIME SET key is pressed
and held for two or more seconds, the time is set
in five minute steps, the same as the UP COUN-
TER, and the alarm can be set to any desired
time up to 33 minutes.
4 INTEGRATING TIMER
Set the tachometer/timer POWER switch and the
transmitter power switch to ON. The blinks,
counting begins, and the elapsed time is displayed
in minutes. For example, indicates that
three minutes have elapsed. If the transmitter
power switch is set to OFF, counting stops. When
the transmitter power switch is turned back on,
counting continues. The integrating timer func-
tion can be started and stopped as long as the
tachometer/timer POWER switch is on even if
another mode is selected with the MODE.SEL
key. This can be used to monitor the transmitter
operating time. If the ENTER key is pressed in
the INTEGRATING TIMER mode, the old in-
tegrating time is cleared and a new count begins.
This can be used to forecast the remaining
Nicd battery capacity and other applications.

•RECEIVER AND SERVOS
Receiver,ServoSwitch,and
Battery Connections
8SGAP 4 Servos
Aileron servo
Elevator servo
Throttleservo
Rudder servo
Landing gear servo
Landing gear servo
Flapservo
Spoiler
servo
Pitch
control
servo
Power switch
SWH-5 (R4-SWJ)
Chargingplug
Fig. 19
Pay careful attention to the polarity
of the connector.
Fig. 18
NR-4J
PCMRECEIVERFP-R118GP
•This LED comes on when the
receiver operated erroneously.
• When the receiver and servo side
Nicd is connected and this LED
is on, radiowaves are not being
received from the transmitter,
check to be sure the frequency
is correct. Checking is possible
by the lamp being on.
•When strong noise has been
received, or the radiowaves from
the transmitter are intermittent-
lyinterrupted,thislampwill blink.
This is usually not a problem.
Receiver crystal Fig. 21
Fig.
20
Crystal
Antenna
wire
Remove the receiver
crystal by pulling it in
this direction.

•FP-S130 AND FP-S130G EXPLODED VIEWS
Fig. 22
Fig. 23
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.
PartName
Upper case
Middle case
Bottom case
Ball bearing
Potentiometer
VR drive plate
Motor
Motor pinion
1st gear
2nd gear
3rd gear
Final gear
2nd shaft
Intermediate shaft
Spacer washer 0.3T
Seal ring
0-ring
Servo horn D
Horn mouting screw
S130 printedwiringboard
Lead wire packing
S1303PB-WRB-300
Screw O-nng
Case mounting screw
S130Nameplate
Part No.
FCS-30
FCS-30
FCS-30
S04130
139995
S02753
S91243
S02461
FGS-30
FGS-30
FGS-30
FGS-30
S02481
S02480
S02486
S90415
S90426
FSH-6W
FSH-41
AS 1220
S90045
FPC-8M
S90410
J50085
S60101
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.
28.
29.
30.
Pan Name
Upper case
Middle case
Bottom case
Motor
Motor pinion
1st gear
2nd gear
3rd gear
Final gear
Intermediate shah
Output shaft
Output shaft bearing
Bent washer for SX
Push nut
Metal slider 0.08T
TR.13VR Body 165D
Fiber washer 20
Binding head lapping screw
Ballbearing
Spacer washer 0.3T
Seal ring
O.ring
Servo horn 0
Horn mounting screw
S130G Printed wiring board
Lead wire packing
S130G 3PBWRB-300
O.ring
Case mounting screw
S130G Name plate
Part No.
FCS-30G
FCS-30G
FCS-30G
S91243
S02461
FGS-30G
FGS-30G
FGS-30G
FGS-30G
S02480
S02803
S02804
S11043
J60070
140002
140000
S90332
J55016
S04130
S02486
S90415
S90426
FSH-6W
FSH-41
AS1224
S90045
FPC-8M
S90410
J50085
S80706

•SPLINED HORNS
Fig. 24
The following splined horns are optional.
HORN A HORN B HORN C HORN D HORN E HORN F
Fig. 25
This horn permits shifting of the
servo neutral position at the servo
horn. Setting and shifting the
neutral position
a) Angle divisions
1) The splined horn has 25 seg-
ments. The amount of change per
segment is; 360-25=14.4°
2) The minimum adjustable angle
is determined by the number of
arms or number of the holes. For
fourarms,theminimumadjustable
angle is:
b) Effect
Fig. 26
To shift the holes center line to
the right (clockwise) relative to
baseline A, shift arm 2 to the po-
sition of arm 1 and set it to the
position closest to baseline A.
(Example] For a four arm horn,
the angular shift per segment is
14.4°. The shift to the right is 90°
- (14.4 x6) =3.6°
To shift by the same angle in the
opposite direction, use the oppo-
site arm number.
Fig. 27
For a six arm horn, turn the arm
counterclockwise and set arm 2
to the position of arm 1. The ad-
justable angle is 60° - (14.4 x 4)
=2.4°.
Arm 3 shift 4.8° to the right, arm
6 shifts 2.4° to the left,and arm 4
shifts 7.2° to the right and left.
Fig. 28
Baseline A
•The frequency of Futaba digital proportional
sets can be changed among bands (1)~(6) on
the 27MHz band only.
•However, a 27MHz band set cannot be changed
to 72MHz band, and vice versa.
•Therefore, always attach the correct frequency
flag to the end of the transmitter antenna.
Each frequency band has its own designated
color, as stated above. The frequency flag is
intended for identification purposes.
•Also change the frequency flag when frequency
is changed.
•Futaba paired crystals are precisely matched.
Always use a Futaba crystal set (transmitter,
receiver) when changing the frequency.
•It is illegal to change crystals of transmitter on
the 72-75MHz bands in the U.S.A.

•BASICLINKAGESANDINSTALLATION
The FP-8SGAP has a servo reversing switch and ATV (Adjustable Travel Volume) for
each channel. Mount the servos without regard to their direction. Select and link servo
horns somewhat larger than those specified by the model manufacturer.
• Install the servos securely. Tighten the mounting
screws until the rubber grommets are slightly
compressed. Note: If the screws are too tight,
the vibration dampening effect of the grommets
will be lost.
• Use extension cords as needed.
• It is suggested that a separate servo be used on
each aileron as this will allow use of the versatile
mixing and differential functions built into the
transmitter. Retractable landing gear can be
operated
with a single servo to save weight or
with two servos to simplify the mechanical link-
age as desired.
• Connect the pushrod to each servo horn, then
check to see if the direction of travel in relation
to stick movement is correct. If the direction of
travel is reversed, use the servo reversing switches
to correct.
• When installing the switch harness, cut a retangu-
lar hole slightly larger that the full stroke of the
ON/OFF switch and install the switch so that it
operates smoothly. It is best to install the switch
inside the fuselage and attach a piece of wire to
the switch so that it can be operated from out-
side the aircraft. Locate the switch where it will
not be exposed to engine oil, dust, etc.
•Wrap the receiver in soft foam rubber. Water-
and dustproof the receiver by placing it in a
plastic bag and tying the mouth of the bag with
a rubber band. Do the same with the airborne
battery pack. Caution: The foam rubber should
be loosely wrapped and not compressed. This
will provide maximum protection from vibra-
tion.
• Use the rubber bands wrapped around the re-
ceiver to hold the servo and switch leads.
• Even though the receiver antenna may appear to
be too long, do not shorten it or fold it back.
• Be alert for possible electrical noise.
This system has noise rejection circuits, however
noiseless parts are recommended.
•Operate each servo to its full throw and check
for slop or binding in the linkage. Unreasonable
force applied to the servo horns can damage the
servo or horns and will greatly shorten battery
life. Adjust linkages and servo horns so that the
servos move smoothly even when the trim lever
and stick are operated simultaneously in the
same direction.
• After installation is complete, recheck each part,
then perform a range check by collapsing the
transmitter antenna and extending the receiver
antenna to its full length. Operate the transmit-
ter at a distance of 60 to 90 feet from the receiv-
er. The servos should operate normally at this
distance.
Normal 8 channel use (mixing and other functions not used).
Set the switches on the trimmer panel at the back
of the transmitter as shown below. The switches
are set as shown in Fig. 29. Connect the aileron
servo to CH1, elevator servo to CH2, throttle servo
to CH3, rudder servo to CH4, landing gear servo to
CH5, flap servo to CH6, spoiler servo to CH7, and
the pitch control servo to CH8.
Fig. 29
Set the DIFF
trimmer 1 5
to the INHB
(counterclock
wise).
DIFF trimmer 15 set to INHB Counterclockwise.
Note: Monitor Lamps (B), (C), and (D) do not
come on at this time. Check if the direction of
operation of each servo is correct under this state.
If the direction of operation of a servo is incorrect,
reverse the position of the corresponding servo
reversing switch [38] to [45]. Next, set the 2ND
ATV trimmers on aileron and elevator to the
desired deflection angles on the aircraft. The
deflection angle decreases when the 2ND ATV
trimmer is turned counterclockwise. Throttle con-
trol can be adjusted with the ATL trim lever 19
This completes the settings for basic 8 channel
use.

•USING ATV (ADJUSTABLE TRAVEL VOLUME)
GENERAL - ATV (Adjustable Travel Volume)
allows independent adjustment of servo maximum
throw in each direction (without affecting the
neutral position). This is also sometimes referred
to as "separate endpoint adjustment". ATV is very
convenient when for example: a model requires
more DOWN elevator deflection than UP for equal
inside and outside loops (with equal control stick
deflection). Other aircraft may require slightly
different RIGHT or LEFT aileron or rudder
deflection to give equal response in each direction
(due to engine torque, precision of the model,
etc.). Two different ATV functions are possible
with this system. Memory (Pushbutton) ATV and
2ND ATV.
MEMORY (PUSHBUTTON) ATV
This type of ATV is available on all eight channels.
Servo travel is adjusted as outlined in the example
below.
NOTE: Memory ATV settings are retained in the
transmitter memory circuit even when the power
switch is turned OFF. They are lost however, if
the transmitter Nicd battery nears full discharge or
is removed for servicing.
ATV SETTING
Switch switches(S), [49] and (R) [48]
Fig. 30
MEMORY (PUSHBUTTON) ATV - (Aileron CH1
used as example)
First, set Function Select Switch [49] to ATV
position.
Set Channel Select Switch [48] to 1 (Ail.).
Set the transmitter and receiver power switches
ON and check for proper servo operation.
Move the Aileron stick to full RIGHT aileron,
hold it in that position, and set servo movement
to the desired Right aileron deflection angle by
pressing Button [46] or 47.
Repeat Step 4 for LEFT aileron.
For other channels,
select the channel with
switch 48 and adjust ATV as desired.
When all adjustments are completed, set the
Function Select and Channel Select switches
([48]and [49]) to OFF.
To clear the ATV settings on all channels, set
the Function Select switch [49] to RESET and
Channel Select switch 48 to POSITION 2 (Pos.
2 = ATV when 49 is on RESET) and press
Buttons 46 and 47 simultaneously. ATV is
cleared on ALL CHANNELS and servos will
move to 100% of their maximum throw.
If only one channel is to be cleared or changed,
simply repeat Steps I through 5 with Chan-
nel Select Switch [48] set to the appropriate
channel.
ATV/FS BUTTON
•These two pushbutton switches are used for servo deflection angle setting of ATV, FS or HOLD func-
tion, servo test start & stop; reset; battery FS memory set, etc.
Fig.
31
This pushbutton switch is used when:
Making the ATV servo deflection angle larger.
Turning the FS function on.
Starting the servo test.
This pushbutton switch is used when:
Making the ATV servo deflection angle smaller.
Turning the HOLD function on.
Stopping the servo test.
When button 46 and 47 are pressed at the same
time, reset or battery FS memory setting is pos-
sible. At this time, lamp A of memory lamps 22
goes out momentarily so that setting can be moni-
tored.