Your NER-102 Receiver has Battery Eliminator Circuitry (B.E.C.).
The receiver gets its power from the model’s NiCad battery pack,
thus saving the weight of an additional receiver battery. NiCad
batteries from 6V-8.4V (5-7 cells) can be used safely. Higher volt-
age packs may damage the receiver and servos.
ATTENTION: Make sure the male and female connectors have
the correct polarity (+/–) before connecting. The servo lead and
receiver case are molded so that the lead can only be inserted
correctly. Be sure to orient the servo plug correctly for proper
insertion.
You may use a separate battery to power the receiver (such as
for some electric boats or in gas-powered vehicles). A NiCad pack
plugged into the BATT socket on your receiver will operate your
receiver. You may also use alkaline batteries with an optional
battery holder (part no. JRPA020).
If you use a mechanical speed controller, please ensure that it
has the correct connector for a B.E.C. system (red connector).
See F
IGURE
A for a typical setup.
Most electronic speed controllers are set up for B.E.C. operation
and plug directly into your receiver (Function 2). See F
IGURE
B for
a typical setup and check your speed controller’s manual for
correct installation.
You should use the black rubber servo cushions whenever possi-
ble to decrease your servo’s sensitivity to vibration.
IV. OPERATING YOUR MODEL
It is important to learn the proper sequence for switching
ON/OFF your radio system:
B
EFORE
O
PERATION
: Switch on the transmitter, then the receiver.
A
FTER
O
PERATION
: Switch off the receiver, then the transmitter.
This ensures that you will always have a signal to the receiver,
and your R/C model will not operate out of control when you
turn off the transmitter.
V. INSTALLATION
B
E
C
B
E
C
F
IGURE
A – Connections to B.E.C. receiver with mechanical speed controler. NiCad
battery, speed controller and battery holder are not included in the radio set.
To Motor
To Motor
To Resistors
BEC Connector
Optional Battery Holder
(JRPA020)
JR P
YTHON WITH
Z250
SERVOS
S
ERVO
F
EATURES
• A tight deadband amplifier ensures accurate neutral centering
• Low current drain
• An indirect drive feedback potentiometer gives additional
protection from vibration
• State-of-the-art surface mount technology (SMT)
• 3-pole ferrite cored motor for reliability
Z250 S
ERVO
L
AYOUT
Rubber Grommets
Servo Case
Servo Lead w/Connector
Servo Output Shaft
Servo Mounting Flange
Servo Arm/Horn
Servo Arm Retaining Screw
Servo Eyelet
Servo Mounting Flange
Rubber Grommets
TOP VIEW
F
IGURE
B – Connections to B.E.C. receiver
with electronic speed controler. Ni-Cad
battery and speed controller are not
included in the radio set.
2
