JR ProPo X-378 User manual

INSTRUCTION M ANUAL
FOR AIRPLANE,
HELICOPTER
AND
SAILPLANE
X
-378
7-CHANNEL COMPUTER

T ABLE OF CONTENTS
I. INTRODUCTION
T able of Contents 2
1. Using The Manual 4
2. Features 4
2.1
T ransmitter 4
2.2 Receiver 4
2.3
Servo Features 5
3. Componenet Specifications
3.1 System Specifications 5
3.2
T ransmitter Specifications 5
3.3 Servo Specifications 6
3.4 Receiver Specifications 6
3.5 Charger Specifications 6
3.6 Airborne Battery Pack 6
4. Battery Charging 7
4.1
T r ansmitter/Receiver 7
4.2 Charger 7
4.3
Advanced Digital T rims 8
II. AIRPLANE SECTION
1. Software Funtions
1.1 Control Identification and Location 9
1.2 Channel Assignment/Throttle AL T 9
A. Airplane V e rsion T ransmitter 9
B. Sailplane Mode 10
C. Heli Mode 10
1.3
T ransmitter Rear 11
1.4
Control Stick Length Adjustment 12
1.5
Control Stick T ension Adjustment 12
1.6 Direct Servo Control 12
1.7
N eck Strap Attachment 13
1.8
B ase Loaded Antenna 13
1.9
F requency Notes/Aircraft Only Frequencies 13
2. Connections
2.1 Installation Requirements 14
2.2 Connections 14
3. Mode Input an Function 15
4. Alarm and Error Display 15
4.1
B attery Alarm and Display 15
4.2
B ackup Error Display 15
5. System Mode Function 16
5.1 Normal Display 16
5.2
Direct Access Digital T rims 16
5.3 System Mode 17
5.4
M odel Selection/Copy Select 18
5.5
M odel Name Entry 20
5.6
M odel T y pe Selection 21
5.7
D ata Reset 22
5.8
M odulation Select 23
5.9
Data T r ansfer 24
5.10
T r im Step 25
5.11
Throttle Cut Switch 26
5.12
Wing T y pe Selection 27
5.13
Aux 2/Spoiler Channel Input Select 30
6. Function Mode
6.2 Servo Reversing 31
6.3
Dual-Rates 33
6.4
E xponential 35
6.5
Sub T rim 38
6.6
T ravel Adjust 39
6.7 Elevator -toFlap Mixing 40
6.8 A ileron-to-Rudder Mixing 42
6.9 Mode Function 44
6.10 Snap Roll Function 46
6.11 Differential Aileron Mixing 48
6.12 Landing Attitude 50
6.13 Programmable Mixing 51
6.14 Fail Safe/Hold 55
6.15 T r ainer System 59
6.16 T i mer Function 62
7. Practical Applications 64
7.1 P rogrammable Mixing Options 64
8. Data Sheet 65
III. HELICOPTER
1. Tr ansmitter Controls 66
1.1 Control Identification and Location 66
A. Helicopter V e rsion T ransmitter 66
1.2 Channel Assignment/Receiver 66
1.3 T ransmitter Rear 68
1.4 Control Stick Length Adjustment 69
1.5 Control Stick T ension Adjustment 69
1.6 DSC Cord 69
1.7 N eck Strap Attachment 70
1.8 B ase Loaded Antenna 70
1.9 F requency Notes/Aircraft Only Frequencies 70
2. Connections 71
2.1 Installation Requirements 71
2.2 Connections 71
3. Key Input and Display 72
4. Alarm and Error Display 72
4.1 B attery Alarm and Display 72
4.2 B ackup Error Display 72
5. System Mode 73
5.1 Normal Display 73
5.2 System Mode 73
5.3 Function Mode 74
5.4 M odel Selection/Model Copy Select 75
5.5 M odel Name Entry 77
5.6 M odel T y pe Selection 78
5.7 D ata Rest 79
5.8 M odulation Select 80
5.9 Data T r ansfer 81
5.10 T r im Step 84
5.11 Throttle Cut Switch Activation 85
5.12 Aux/Gear Function Select 86
5.13 Swashplate T y pe 87
6. Function Mode 88
6.1 Function Mode 88
6.2 Servo Reversing 89
6.3 Dual-Rates 90
6.4 E xponential 92
6.5 Sub T rim 93
6.6 T ravel Adjust 94
6.7 CCPM Swashplate Mixing 95
6.8 Throttle Hold 97
6.9 Throttle Curve 98
6.10 Pitch Curves 101
6.11 Inverted Switch 103
2
X-378 MANUAL Table of Contents

T ABLE OF CONTENTS
6.12 Revolution Mixing 104
6.13
Gyro Gain Function 106
6.14
Programmable Mixing 110
6.15
PCM Fail-Safe/Hold Function 114
6.16
T r ainer System 117
6.17
T i mer Function 119
7. Data Sheet 121
IV . SAILPLANE
1. T r ansmitter Controls
1.1 Control Identification and Location 122
A. Glider V e rsion Tx 122
B. Airplane Mode 123
C. Heli Mode 123
1.2
C hannel Assignment/Throttle AL T 123
1.3
T ransmitter Rear 124
1.4
Control Stick Length Adjustment 125
1.5
Control Stick T ension Adjustment 125
1.6
DSC Cord 125
1.7
N eck Strap Adjustment 126
1.8
B ase Loaded Antenna 126
1.9
F requency Notes/Aircraft Only Frequencies 126
2. Connections
2.1 I nstallation Requirements 127
2.2
Connections 127
3. Key Input and Display 128
4. Alarm and Error Display 128
4.1
B attery Alarm and Display 128
4.2
B ack-Up Error Display 128
5. System Mode 128
5.1
N ormal Display 128
5.2
M odel Setup Mode 129
5.3
Function Mode 130
5.4
M odel Selection/Model Copy Select 131
5.5
M odel Name Entry 133
5.6
M odel T y pe Selection 134
5.7
D ata Rest 135
5.8
M odulation Select 136
5.9
Data T r ansfer Function 137
5.10
T r im Step 140
5.11
V - T a il/Dual Flap Wing Mixing 141
5.12
Flap Switch Select Function 143
6. Function Mode
6.1 Function Mode 144
6.2
Servo Reversing 145
6.3
D ual Rates 146
6.4
E xponential 148
6.5
Sub T r im 149
6.6
T ravel Adjust 150
6.7
E levator-to-Flap Mixing 151
6.8
A ileron-to-Flap Mixing 153
6.9
D ifferential Aileron Mixing 155
6.10
Flap to Elevator Mixing 156
6.11
Flap-to-Aileron Mixing 159
6.12
Aileron-to-Rudder Mixing 162
6.13
Crow/Camber Mixing 164
6.14
Dual-Flap T r im 166
6.15
Programmable Mixing 1-6 167
6.16
Fail-Safe/Hold Function (PCM Only) 171
6.17
T r ainer System 175
6.18
T i mer Function 177
7. Practical Applications 179
7.1 X -378 Program 179
8. Data Sheets 184
V . IMPOR T ANT INFORMATION
1. Servo Precautions 185
2. General Notes 185
3. Federal A v iation Administration 186
4. Daily Flight Checks 186
5. Frequency Chart 187
6. W a rrantyInformation 188
X-378 MANUAL Table of Contents 3

CHAPTER 1 : USING THIS M ANUAL
•
Introduction
1
USING THIS MANUAL
In the beginning of this manual you will find the
specifications for the radio and its various
accessories. In addition, guidelines for the initial
installation of the accessories have been included,
as well as instructions for setting all the functions
and programs of the X-378 to suit your personal
preferences. These features are discussed in the
same order that they will appear on your radio,
as you will see on the accompanying charts. An
explanation of the use and purpose of each feature
is provided, followed by a labeled illustration of its
respective LCD display .
In addition, a step-by-step example clarify the setup
procedure of the feature. Practical applications for
many of the radio’ s features enable you to see their
true purpose and additional possibilities. A blank
data sheet has been included at the end of each
section. Once all data has been inputfora
particular model, it is highly recommended that you
record it on a copy of the sheet provided. If you
should experience memory loss or battery failure or
wantto make changes to the current settings, this
step will save you a great deal of time. Following
the data sheet, you will find information on
precautionary measures and general guidelines for
safe use of your new equipment.
Use of the Instructions with the Radio
While the X-378 has a dedicated or single-use switch
layout, it may be used for multiple model
types.
T
e mplates have been provided in this manual that
explain the different switch assignments when
using
the transmitter with the various air
, heli and sailplane
software.
CHAPTER 2 : FEA TURES
2.1
X-378 TRANSMITTER
The computer designed, ergonomically styled
transmitter case ensures a good, comfortable fit in
your hands. The ultra-precision control sticks offer
adjustable spring tensions and length. The throttle
s t i ck off e r s a ratchet in Airplane configuration for
smooth travel.
8 -m odel memory storage allows
programming of all characteristics of eight separate
helicopters, airplane or gliders; you can program
more than one setup for a single aircraft, allowing
you to instantly change the flight characteristics.
Afive-year lithium backup battery prevents loss of
memory in the event that the battery discharges
completely or is removed.
Features include automatic fail-safe "set" and
information update in PCM mode when fail-safe is
used. A programmable trainer function allows the
student to practice individual channels separately
.
Direct Servo Control (DSC) permits operation of
a ll t h e controls and servos without generating a
radio signal.
2.2
R700 RECIEVER
NER-700 (FM Systems)
The R700’ s is a high-performance FM or single-
conversion receiver with 10KHz super narrow band
ABC&W circuitry .
Anarrow band ceramic filter for high-signal
selectivity assists in rejecting cross modulations
from other common radio frequencies-e.g., R/C
transmitters, local paging systems. This receiver
features Direct Servo Control (DSC) for control of
surfaces without radio frequency output.
The receiver has low current consumption.
The R700's Slimline design allows it to fit into most
model applications.
4
X-378 MANUAL Introduction

2.3
S537 BALL BEARING SERVOS
537 Servo
• Wide spaced ball bearing for precise movement
of your aircraft control outputs
• A zero deadband amplifier insures accurate
neutral centering
• Low current drain
• Indirect drive feedback potentiometer gives
additional protection from vibration
•3-pole ferrite cored motor
CHAPTER 3 : COMPONENT SPECIFICA TIONS
3.1
SYSTEM SPECIFICATIONS
TYPE AIRPLANE HELICOPTER
SYSTEM NAME X-378A X-378H
TRANSMITTER BODY NET - K227FS Net-K227HS
TRANSMITTER RF MODULE NET - J72P NET - J72P
RECEIVER R700 (FM) R700 (FM)
CHARGER N EC-221 NEC-222
AIRBORNE BA TTER Y 600mah 1100mah
SERVOS N ES-537X4 N ES-537X5
ACCESSORIES Standard Switch Standard Switch
12" Aileron Extension 12" Aileron Extension
Charge Jack Charge Jack
Ser
vo Accys Ser vo Accys
Hex Wrench Hex Wrench
Instruction Manual Instruction Manual
3.2
TRANSMITTER SPECIFICATIONS
TYPE AIRPLANE HELICOPTER
MODEL NUMBER NET - K227FS Net-K227HS
E N C O D E R 7–channel computer system 7–channel computer system
RF MODULE 72MHz 72MHz
MODULA T ION PCM (z or s) or PPM PCM (z or s) or PPM
OUTPUT POWER Approximately 750mw Approximately 750mw
CURRENT DRAIN 200mA (70mA with DSC) 200mA (70mA with DSC)
POWER SOURCE 1.2Vx Ni-Cd (9.6V) 600mAh 1.2Vx Ni-Cd (9.6V) 600mAh
OUTPUT PULSE 1000–2000 (1500 Neutral) 1000–2000 (1500 Neutral)
X-378 MANUAL Introduction 5

4682 JR X-378 • ALL 7/23/02 10:07 PM Page 6
3.3
SERVO SPECIFICA TIONS
TYPE 537
TORQUE (ounce inch) 43 oz/in
SPEED (sec/60°) . 25 6 0 °
WEIGHT 1.58
SIZE (in) (W x L x H) 1.52 x 0.73 x 1.32
BB Single
MOTOR 3 -Pole Ferrite
3.4
RECEIVER SPECIFICA TIONS
TYPE FM
MODEL NUMBER R700
TYP E 7 Channel / FM-ABC&W / Micro
FREQUENCY 72MHz
SENSITIVITY (Microseconds)
5 uS minimum
SELECTIVELY 8KHz / 5 dB
WEIGHT (oz) 1.5
RECEIVERANTENNA 39“ forall air craft frequencies
3.5
CHARGER SPECIFICA TIONS
TYPE AIRCRAFT H ELICOPTER
MODEL NUMBER NEC-221 NEC-222
I N P U T V O LT A G E AC 100–120V AC 100–120V
OUTPUT CURRENT 50mAh TX/50mAh RX 50mAh TX/120mAh RX
CHARGING TIME 15 Hours 15 Hours
3.6
AIRBORNE BATTER YP ACK
TYPE AIRCRAFT H ELICOPTER
MODEL NUMBER B600 B1000
VOLT AGE 4 . 8 V 4 . 8 V
SIZE (in) (W x L x H) 2.24 x 0.59 x 2.05 2.24 x 0.63 x 1.70
WEIGHT (oz) 3.3 4 .9
6
X-378 MANUAL Introduction

CHAPTER 4: BA TTERY CHARGING
4.1
TRANSMITTER/RECEIVER
Note: It is imperative that you fully charge
both the transmitter and the receiver battery
packs priorto each flight. T o do so, leave
the charger and batteries hooked up overnight
(16 hours). The first charge should be
approximately 20–24 hours in order to fully
charge both battery packs to peak capacity
.
RIGHT SIDE OF TRANSMITTER
The charger supplied with this system is
designed to recharge your batteries at a rate
of 5mAh for the transmitter and 50mAh for
the receiver battery pack.
CENTER
PIN IS
NEGATIVE
Tr ansmitter Only
The center pin on all JR Remote Control Systems is
negative. Therefore, the center pin on all JR chargers
is negative, not positive. This is different from many
other manufacturers' chargers and radio systems.
Beware of improper connections based on "color
-
coded" wire leads, as they do not apply in this
instance. Y ou must make sure that the center pin of
your JR transmitter is always connected to the
negative voltage for correct polarity hookup.
OUTSIDE IS POSITIVE
CHARGER PIGT AIL FOR TRANSMITTER
BLACK TO POSITIVE
RED TO NEGATIVE
CHARGER PIGTAIL FOR RECEIVER
Important: Please note that the charging
polarity of the transmitter and receiver are
different.
RED–POSITIVE / BROWN–NEGATIVE / ORANGE–SIGNAL
4.2
CHARGER
The pilot lamps should always be on during the
charging operation. If not, check to make sure that
both the transmitter and receiver are switched off. Do
not use the charger for equipment other than JR. The
charging plug polarity may not be the same.
Equipment damage can result.
Do not use other manufacturers' after - market
accessories that plug into the transmitter's charging
jack. If you do, any damage that results will not be
covered by warranty . If you are unsure of compatabily
issues with your radio, seek expert advice before
doing anything to avoid possible damage. During
the charging operation, the charger's
temperature is slightly elevated. This is normal.
Also, note that the voltage shown on the charger is
higher than the battery in use. This voltage cannot
be measured with a voltmeter. Only current can
be measured with any accuracy using this type
of charger .
Be sure to use the proper charger (120mAh)
when using battery packs of 1000mAh or larger for
yourreceivers.
X-378 MANUAL Introduction 7

4.3
ADV ANCED DIGIT AL TRIMS
Y our new X-378 system employs four digital trim
levers for unmatched precision and adjustability .
By using the T rim Step function located in the
System mode, the movement of the ADT trims
can be fine tuned as needed to match your
specific application.
The ADT feature is also designed to automatically
save the determined trim values for each model.
When the X-378 is changed between models in the
Model Select function, the digital trim values will
automatically stay with each model, eliminating the
need for a separate trim memory function.
will automatically change to display the numeric
value, as well as the graphic position for the trim
being adjusted.
The X-378's digital trims also feature 2-speed
scrolling . When a substantial amount of trim is
required, holding the trim in the desired position
will activate the dual speed scrolling function. The
X-378's Aileron, Elevator, and Rudder trim
levers
(also throttle in sailplane mode) feature
an audible center trim beep. This is helpful in
determining the trim levers center position
duringflight.
The X-378's digital trims also feature the Direct
Access display function. While at the Normal
displayscreen, if a trim leveris moved, the screen
Please also note that unlike conventional
mechanical trim levers, when the X-378 transmitter
is in the off position, no changes can be made to
the
trim values during transportation.
One T ouch Digital Throttle Tr im Lever (Air and Heli Modes only)
The X-378 also features a revolutionary One-T ouch
Digital Throttle Trim lever . While in Air or Heli modes,
the X-378 will remember the maximum high Throttle
T
rim position (usually idle) set from the previous
flight. At the end of the flight, move the
Throttle T rim
to the full low (engine off) position.
For the next
flight, by simply pressing the Digital
Throttle T rim up
once, the throttle trim value will
automatically move
to the position from the
previous flight. Trim value
changes can then be made by moving the throttle trim
lever as needed.
The Direct Access Digital T rim
function will display
the throttle trim value
numerically and also
graphically on the screen automatically each time
the Throttle T
rim is moved
This feature is very helpful as once you have set the
correct throttle trim value for a proper idle, the
X-378 will allow the Trim lever to be set back to this
position for each flight, eliminating the need to set
the exact throttle trim value for each flight.
Note : When the X-378 is in the glider
(sailplane) model type, the Digital Throttle
T rim works as a conventional trim lever, which
is the most desirable method in this mode.
8

SECTION II • CHAPTER1: SOFTW ARE FUNCTIONS Airplane
1.1
CONTROL IDENTIFICA TION AND LOCA TION
AUX 2
Lever
Flap MixSwitch
Antenna
Carr ying
Handle
Neck StrapEyelet
Flap
Lever
Snap Roll/T i mer
T rainer/Button
Throttle Cut
Aileron D/R
Switch
Rudder DR
Switch
GearSwitch
Elevator DR
Switch
On/Off
Switch
Digital Throttle
T r im Lever
Rudder/Throttle
Control Stick
Digital Rudder
T r im Lever
Digital
Elevator
T r im Lever
Aileron/
Elevator
Control
Stick
Digital
Aileron
T r im Lever
Up/Down
Scroll
Buttons
Channel Key
Increase/
Decrease
Programming
Buttons
Clear Key
LCD Display
1.2
CHANNEL ASSIGNMENT/THROTTLE AL T
CHANNEL ASSIGNMENT
Channel TX Function Airplane Function
1 THRO Throttle Channel
2 A ILE Aileron Channel
3 ELEV Elevator Channel
4 RUDD Rudder Channel
5 GEAR Gear Channel
6 AUX 1 Auxiliary 1 Channel
(Flap)
7 AUX 2 Auxiliary 2 Channel
(Spoiler)
Throttle AL T
The Throttle AL T function makes the throttle stick
trim active only when the throttle stick is at less
than half throttle. This gives easy , accurate idle
adjustments without affecting the high throttle
position.
X-378 MANUAL Airplane 9

CHAPTER 1: SOFTW ARE FUNCTIONS Airplane
A
ir
p
lane V ersion
T
ransmitte
r
—
Sail
p
lane Mode
Flap Mixing
Switch
Crow Switch
Elevator DR
Switch
On/Off
Switch
Digital Spoiler
T r im Lever
Spoiler/Rudder
Stick
Digital Rudder
T r im Lever
Up/Down
Scroll Buttons
Channel Key
CHANNEL ASSIGNMENT
Flapperon
Flap T r i
m
Leve
r
Oval Flap Aileron
T r im Lever
T i mer/Trainer
Button
Aileron D/R
Switch
Rudder DR
Switch
Digital Elevator
T r im Lever
Aileron/Elevator
Control Stick
Neck Strap Eyelet
Digital Aileron
T r im Lever
Increase/Decrease
Programming Buttons
Clear Key
LCD Dis
p
la
y
1. THRO Throttle Channel
2. AILE Left Aileron Channel
3. ELEV Elevator Channel
4. RUDD Rudder Channel
A
ir
p
lane V ersion
T
ransmitte
r
-Heli Mode
5. GEAR Gea
r
Channel
(Right Aileron Channel–AILE 2)
6. AUX 1 Auxiliary 1 Channel
(Left Flap Channel for Dual Flaps)
7. AUX 2 Auxiliary 2 Channel
(
Ri
g
h
t
Fla
p
Channel fo
r
Dual Fla
p
s
)
Flight Mode
Switch
Gear Switch
Elevator DR
Switch
On/Off
Switch
Digital Throttle
T r im Lever
Hover Pitch
Leve
r
Hover Throttle
Lever
T i mer/Trainer
Button
Throttle Cu
t
Button
Rudder DR
Switch
Digital Elevator
T r im Lever
Aileron/Elevator
Control Stick
Throttle/Rudde
r
Stick
Digital Rudder
T r im Lever
Up/Down
Scroll Buttons
Channel Key
CHANNEL ASSIGNMENT
1. THRO Throttle Channel
2. AILE Aileron Channel
3. ELEV Elevator Channel
4. RUDD Rudde
r
Channel
Neck Strap Eyelet
Digital Aileron
T r im Lever
Increase/Decrease
Programming Buttons
Clear Key
LCD Display
5. GEAR Gear Channel
6. AUX 1 Auxiliarty 1 Channel (Pitch)
7. AUX 2 Auxiliary 2 Channel
(
G
y
ro Sensitivit
y)
10
X-378 MANUAL Airplane

CHAPTER 1: SOFTW ARE FUNCTIONS Airplane
1.3
TRANSMITTER REAR
TRANSMITTER CRYSTAL
CHARGING JACK
FOR Ni-Cd BATTERY
ONLY (8N-600)DSC/TRAINER JACK
BATTERY COVER (REMOVED)
CAUTION: THE BATTERY
CONNECTOR IS KEYED SO THAT IT
CAN ONLY BE PLUGGED IN ONE
DIRECTION. DO NOT FORCE.
T
ransmitte
r
Crystal Replacement Notice
The Federal Communications Commission (FFC) requires that
changes in transmitter frequency must be performed only by an
authorized service technician (Horizon Service Center). Any
transmitter frequency change made by non-certified technician
may result in a violation of the FCC rules.
ELEVATOR TENSION SCREW
THROTTLE TENSION SCREW
RUDDER TENSION SCREW
A
ILERON TENSION SCREW
X-378 MANUAL Airplane 11

CHAPTER 1 : SOFTWARE FUNCTIONS
•
Airplane
1.4 CONTROL STICK LENGTH ADJUSTMENT
T
o adjus
t
the stick length, use the 2mm Allen wrench
(supplied with your X-378 transmitter) to unlock the
set screw . T u rn the wrench counterclockwise to
loosen the screw. Then, turn the stick clockwise to
shorten or counterclockwise to lengthen. After the
control stick length has been adjusted to suit your
flying style, tighten the 2mm set screw. If you desire
longer sticks, JR offers a thicker stick (JRPA 047) that is
approximately one inch longer than the standard
stick. This stick, crafted from bar stock aluminum, is
available at your local JR dealer .
SET SCREW
LOOSEN
TIGHTEN
1.5 CONTROL STICK TENSION ADJUSTMENT
Remove the Ni-Cd battery and six transmitter bac
k
screws as shown on the previous page. Remove th
e
transmitter back, being careful not to cause damag
e
to any components.
A
djus
t
each screw for desired tension (counter -
clockwise to loosen stick feel; clockwise to tighten
stick feel). When adjusting the throttle ratchet tension,
make sure that the adjusting screw does not touch the
PC board after adjustment is complete.
1. 6 DIRECT SERVO CONTROL
(
DSC
)
For proper DSC hook-up and operation:
1. Leave the transmitter power switch in the Off
position. The transmitter will not transmit any radio
frequency (RF) in this position.
2. Plug the (supplied) DSC cord into the DSC port
in the rear of the transmitter .
3. The encoder section of the transmitter will now
be operational and the LCD display will be lit.
4 . Plug the other end of the DSC Cord into the receiver
charge receptacle. T u rn the switch harness to the On
position.
2. The DSC function allows you to make final
adjustments to your airplane without transmitting
any radio signals. Therefore, if another pilot is flying
on your frequency
, you can still adjust your aircraft
and not interfere with the other pilot’ s aircraft.
Note: Under no circumstances should you
attempt to fly your aircraft with the DSC cord
plugged in! This function is for bench-
checking your airplane only .
Note: When you install the charging jack, be
sure to hook the charging jack receptacle
securelyinto the switch harness charge cord.
A—Charge Cord/DSC Receptacle
B—Switch Harness Lead C—
Charger/DCS Cord
Why you should use the DSC function:
1. The DSC enables you to check the control
surfaces of your aircraft without drawing the fully
operational 200mAh from your transmitter
battery
pack. Instead, you will only draw 70mAh when
using the DSC function.
BA
C
12
X-378 MANUAL Airplane

CHAPTER 1 : SOFTWARE FUNCTIONS
•
Airplane
1. 7 NECK STRAP A TT ACHMENT
A
n eyele
t
is provided on the face of the X-378
transmitter that allows you to connect a Neck Strap
(JRP A 023). This hook has been positioned so that
your transmitter has the best possible balance when
you use the neck strap.
Note: Double-check to ensure that the neck
stra
p
is securel
y
fastened to the transmitte
r
.
1. 8 BASE LOADED ANTENN
A
An optional base-loaded antenna is available for use
with the X-378 transmitter . It is considerably shorter
than the standard antenna. However , the base loaded
antenna cannot be collapsed for storage in
the side of
the transmitter
. Y ou must also use an
adaptor (JRP A156) to attach the antenna to your
X-378. The Base Loaded Antenna (JRP A155) is made
of a flexible coil and is covered with a soft plastic
material. Your range will not be affected when using
the base loaded antenna.
1. 9
FREQUENCY NOTES/AIRCRAFT ONLY FREQUENCIES
The X-378 transmitter employs a plug-in crystal for
transmitter that is glued in place at the time of
shipment. Per FCC regulation, the transmitter crystal
should only be changed by a certified technician.
Changing of the transmitter crystal by a non-
authorized technician could result in a violation
of FCC rules.
The X-378 can transmit in either Pulse Code
Modulation (PCM) or Pulse Position Modulation
(PPM, commonly referred to as FM).
Be certain to observe the following guidelines:
1. Do not operate your transmitter when another
transmitter is using the same frequency
, regardless of
whetherthe second transmitter is PCM, PPM (FM)
or
AM. Y ou can never operate two transmitters on the
same frequency simultaneously without causing
interference to both receivers and crashing both
aircraft.
2. For operation of your X-378 with additional
receivers, you should refer to the receiver
compatibility chart. The chart is located in the
Modulation Selection Section of this manual.
Aircraft-Only Frequencies
JR T r ansmitters and receivers are available in 72MHz
frequencies in the United States for use with model
aircraft. Employing 72MHz frequencies does not
require a special operator’
s license from the Federal
Communications Commission (FCC).
* A chart for all available frequencies is located on
page 185 of this manual.
X-378 MANUAL Airplane 13

CHAPTER 2 : CONNECTIONS • Airplane
2.1
INST ALLA TION REQUIREMENTS
It is extremely important that your radio system be
correctly installed in your model. Here are a few
suggestions on the installation of your JR equipment:
1. W r ap the receiver in protective foam rubber that
is no less than 3/8 inch thick. Secure the foam to
the receiver with #64 rubber bands. This protects the
receiver in the event of a crash or a very hard
landing.
2. The servos should be mounted using rubber
grommets and brass bushings to isolate them from
vibration. Do not over-tighten the mounting screws;
this will negate the vibration absorption effect of the
rubber grommets. The following
diagram will assist you in
properly mounting
yourservo.
The brass bushings are pushed from the bottom up in
the rubber grommets. When the servo screw is
tightened securely, it provides the proper security as
well as the proper vibration isolation for your servo.
3. The servos must be able to move freely over their
entire range of travel. Make sure that the control
linkages do not bind or impede the movement of any
of the servos.
4. Mount all switches away from the engine exhaust
and away from any high vibration areas. Make sure the
switch operates freely and is able to operate over
its
full travel.
5. Mount the receiver antenna firmly to the airplane
to ensure that it will not become entangled in the
propeller or control surfaces.
2.2 CONNECTIONS
®
4N600
4.8V 600mAh
JAP AN REMOTE CONTROL CO., LT D.
RECEIVER BATTERY 4N-600
DELUXE SWITCH HARNESS
(JRPA0001)
CHARGECORD OR
D.S.C. RECEPTACLE
(JRPS024)
CHARGECORD OR D.S.C.
D.S.C.-(JRPA132)
CHARGER-(JRPC221)
7 CH 72MHzFM SLIMLINE
RECEIVER
ABC&W INTERFERENCE
PROTECTION SYSTEM
R700 RECEIVER
AUX1
GEAR
RUDD
ELEV
AILE
THRO
AUXILIARY 2
AUXILIARY 1
GEAR
RUDDER
ELEVATOR
AILERON
THROTTLE
14
X-378 MANUAL Airplane

HAPTER 3 : INPUT MODE AND FUNCTION
•
Airplane
3 KEY INPUT AND DISPLAY
The Function Selection keys are used to move up and
down through the functions.The Channel key is used
to advance the channel orfunction selected. The
Increase and Decrease keys are used to make changes in
the selected functions.
Up Increase
Function Selection Keys
Down Decrease
Press both keys at the
same time to enter or
exit the function mode.
Channel Clear/Store
CHAPTER 4 : ALARM AND ERROR DISPLA Y
•
Airplane
4.1 BA TTER Y ALARM AND DISPLAY
When the transmittervoltage drops below 9.0 volts
DC, the displayflashes “BATT” and an alarm sounds
seven times. If you are flying when this occurs, land
immediately .
4.2 BACKUP ERROR DISPLAY
A
ll preprogrammed data is protected by a five-year
lithium battery that guards against main transmitter
battery failure. Should the lithium battery fail, the
display will indicate ERR1 regardless of the position
of the On/Off switch. If this occurs, it will be
necessary to replace the battery and reprogram all
data. All transmitter programs will return to the
factory default settings, and the data you have input
will be lost. When it becomes necessary to replace
th
e
lithium back-up battery , contact JR Horizon
Service Center . Due to the possibility of extensive
damage caused by improper removal or replacement,
only JR Horizon Service Center is authorized to make
this change.
X-378 MANUAL Airplane 15

CHAPTER 5 : SYSTEM MODE • Airplane
5.1 NORMAL DISPLAY
When the power switch is in the On position, the
displaywill read as follows:
Modulation
T ype
Model T ype
Model Number
Throttle T
r im
Elevator T r im
Model Name
Rudder T r im
Aileron T r im
T o enter the System mode, press
simultaneously then turn on the
power switch. T o enter the Function
model, turn on the power switch,
then press simultaneously .
In the T i mer mode, press the
Channel key to start/stop the timer,
and press the Clear key to reset the
timer .
5.2 DIRECT ACCESS DIGIT AL TRIMS
The X-378 is equipped with a DirectAccess Digital
T rim V a lue function. When at the normal display , if
a digital trim lever is moved, the screen will
automatically change to show the current trim value
for the channel being adjusted. When the trim is
returned to center , the screen will change back to the
normal display screen after a few seconds.
Current trim value for the channel beingadjusted
16
X-378 MANUAL Airplane

CHAPTER 5 : SYSTEM MODE • Airplane
5.3 SYSTEM MODE
T o enter the System mode, press the Down and
Channel keys simultaneously , then turn the power
switch to the on position. The display will show the
last active program. Pressing either the Up or Down
key then scrolls through the functions one by one,
according to the system mode flowchart shown to
the right. Once the appropriate function is displayed,
changes can be made by pressing the (+) or (-) keys.
System Mode Flowchart
Information pertaining to each function is explained
on the page listed next to the function name.
Functions will appear in the same order they are
shown on this chart.
Model
Selection pg. 18
Model Name
Entr y pg. 20
Model
T ype pg. 21
Data
Reset pg. 22
Modulation
Selection pg. 23
Accessing the System Mode
1. Press the Down and Channel keys simultaneously .
2. Move the power switch to the On (upper)
position.
3. Use either the Up or Down key to scroll through the
menu and access the applicable function.
Data
T ransfer pg. 24
Tr i m
Step pg. 25
Throttle Cut
Switch Activation
pg. 26
Wing
T ype pg. 27
Spoiler Channe
Input Selection
pg. 30
X-378 MANUAL Airplane 17

CHAPTER 5 : SYSTEM MODE • Airplane
5.4
MODEL SELECTION/COPY SELECT
The X-378 system offers memory for eight completely
separate models. Therefore, it is possible to have a
mixture of helicopter , airplane and glider setups
retained in memory. It is also recommended that the
Model Name Entry function be used in conjunction
with each model setup. Another very useful function
of the Model Selection function is the ability to set
one aircraft up several different ways. This is helpful
when multi-task performance is desired.
Model Name
“Model” flashing indicates
Model Select function
Model Name Entr y
UP
DN
CH CLR
Spoiler Channel
Input Select
Copy
Selection
Model Selection
Accessingthe Model Selection Function
1. While pressing the Down and Channel keys, switch the
transmitter to the On position to enter the Model
Setup mode.
2. Model should be flashing on the right top portion
of the LCD. If not, press the Up or Down key until
“Model” is displayed and flashing.
3. Pressing the (+) or (-) key will select among each
of the eight models available. Notice that as each
model is selected, its name appears in the left
portion of the LCD.
4. T o access the Copy Selection function, press the
Channel key .
5. T o access the Model Name Entry function, press
the Up key .
6. Once the desired model is displayed on the left,
pressing the
Down and Channel keys simultaneously will
exit the Model Selection function and establish the
model displayed as the new current model.
Note: When changing from one model type
to another , it is not necessary to use the T ype
Selection function. This is done automatically by
the computer
.
18
X-378 MANUAL Airplane

CHAPTER 5 : SYSTEM MODE • Airplane
CopySelection
The Copy Selection function enables you to copy all
of the settings of the current model to another model
within the same transmitter
. This is very
useful when setting up one aircraft several different
ways or when trying an alternative setup of your
currentmodel.
Model number to be copied
Model number to be copied to
Model Naming
UP
DN
CH CLR
Spoiler Channel Input Select
Press at Model
Select function
to access Copy
function.
Press Increase or
Decrease to select
model number to
be copied to.
Press Clear to copy current model to
model number shown at the bottom of
the LCD screen.
Accessingthe CopySelection Function
1. While pressing the Down and Channel keys,
move the transmitter’ s power switch to the
On position.
2. Press either the Up or Down key until "Model"
appears flashing on the top right side of the LCD.
3. The number that appears below the flashing
Model is the current model. This is important to note
as only the current model will be the copied or
"from" model. It is imperative to retrieve the proper
current model prior to initiating the copy sequence.
Press the Increase or Decrease keys to select the desired
model to be copied.
4. Next, press the Channel key once. The word "Copy"
will appear at the top left of the screen indicating that
the Copy function has been selected.
5. The large number (1-8) at the bottom center of the
LCD indicate the accepting model.
6. Now press the Increase or Decrease keys to select the
accepting model number
.
X-378 MANUAL Airplane
Note: Always make sure that the accepting
model is either free of input or one which
you no longer want to retain in your
transmitter’ s memory. Once the copying
process has been completed, the information
of the accepting model is lost and the
current model is input as the new data.
7. Once the desired accepting model is selected,
press the
Clear key to complete the Copy Selection
function. The model number at the bottom of the
screen will flash several times, indicating that the
model copy function was successful. The “from”
(template) model’ s name and data will now replace
that of the accepting model.
8. T o access the Spoiler Channel Input Select
function, press the Down key .
9. T o access the Model Naming function, press the
Up key .
10. T o exit the Copy Selection function, press
the Down and Channel keys simultaneously .
19

CHAPTER 5 : SYSTEM MODE • Airplane
5.5
MODEL NAME ENTRY
The X-378 allows a 3-digit name to be input for each of
the eight models available. The current model will be
displayed in the Normal displaywhen the timer is
not active. Y ou may also find this useful to identify
differentaircraftsetups.
Flashing first digit indicates
Model Naming function and
current character to be
changed
Model Number
Model
T
yp
e
UP
DN
CH CLR
Model Selec
t
Next
characte
r
Select
characters
Clear current
characte
r
Accessingthe Model Name Entr yFunction
1. While pressing the Down and Channel keys, switch
the transmitter to the On (upper) position to enter
the Model Setup mode.
2. Use the Model Selection function to select the
model you want to name. (Please refer to the Model
Selection section at this time.)
3. Press either the Up or Down key until the first digit
of the model to be named is flashing on the left
portion of the LCD.
4. The current name will be displayed in the left
portion of the LCD. Pressing the (+) or (-) key will
selectthe firstalphanumeric character
.
Note: The characterbeing selected will flash.
5. Press the Channel key to advance the character
selection to the next character .
6. Repeat this procedure until all three characters are
selected.
7. T o access the Model Selection function, press the
Down key .
8. T o access the T ype Selection function, press the Up key .
9. T o exit the Model Name Entry function, press the
Down and Channel keys simultaneously .
20
X-378 MANUAL Airplane