Omron Automotive Electronics Korea OKA-870R RF Keyless Entry System (Receiver) User Manual Table of contents

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Document ID	1703967
Application ID	nLXo6fvDrjqIkfDfflGJIw==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	26.14kB (326773 bits)
Date Submitted	2012-05-22 00:00:00
Date Available	2012-05-22 00:00:00
Creation Date	2012-05-11 18:24:40
Producing Software	Acrobat Distiller 9.0.0 (Windows)
Document Lastmod	2012-05-22 15:31:38
Document Title	Table of contents
Document Creator	Wordìš© Acrobat PDFMaker 9.0
Document Author:	jgyoun

OMRON
AUTOMOTIVE
ELECTRONICS
KOREA
OKA- 870R
Transmitter, RF Keyless Entry System
1. Constitution of the Radio Frequency Keyless Entry
System for vehicle
The radio frequency keyless entry is a system that it controls locking and unlocking the door and the
trunk and the panic by wireless remote controller. This system consists of three components. The TRANSMITTER is
a device that transmits the signal when the button is pressed. The transmission signal consists of several
synchronous codes, unique identification code, security code and function code and crc code. The RECEIVER is
fixed inside the vehicle. It works intermittently to prevent the battery exhaustion. When the receiver detects the
synchronous code, it runs continuously to receive the signals completely. After receiving the signal, the receiver
decides which operation will be performed.
The user can select the following operations by pressing the button of the remote transmitter.
OPERATION
ACTION
LOCK
lock the door
UNLOCK
unlock the door
TRUNK
open the trunk
PANIC
alarm the horn
Transmitter
f = 313.85MHz
-1-
2. User's manual (provisionally)
REMOTE TRANSMITTER
You can lock and unlock your vehicle with the remote transmitter.
LOCK
When you push the LOCK button, all the doors will lock.
You cannot lock any of the doors with the remote transmitter if the key is the ignition switch.
UNLOCK
When you push the UNLOCK button, all the doors will unlock.
You cannot unlock any of the doors with the remote transmitter if the key is in the ignition switch.
TRUNK
When you push continuously the TRUNK button during 1s, TRUNK will open.
PANIC
When you push the PANIC button, horn will alarm.
-2-
4. Specification
4.1 CPU
Type
UPD78F0567(32bit)
Manufacturer : Renesas
ROM
384KByte
RAM
24KByte
Clock frequency
4MHz
Clock frequency generation
Crystal resonator
Package
144pin QFP
4.2 RF Receive Module
Type
Local clock frequency
Frequency generation
Modulation Scheme
Bandwidth
Carrier Detect Sensitivity
G8X-21RX-KO2
Manufacturer: OMRON KOREA
313.85MHz
Crystal resonator
FM(superheterodyne)
±200 KHz
11dBuVemf
4.3 Others
Dimension
Weigh
Battery
Operation Voltage, Current
149mm× 119mm × 35mm
326g
CAR Battery(DC 12V)
DC12V,50mA (4mA on standby)
-40℃ ∼ +80℃
-4-
5.Features
5.1 Door lock control
The LOCK relay in the receiver drives the door lock actulators to "LOCK"-side when LOCK button of
transmitter was pressed. The UNLOCK relay in the receiver drives
5.2
Battery saving
To prevent the battery exhaustion , the micro-computer of the transmitter is usually inactive. When the button
will be pressed, the micro-computer wakes up immediately and judges which button is pressing. Then the
micro-computer constructs the transmission frame and radiates it from the antenna .After transmitting, the
micro-computer switches stand-by mode by itself.
6. Derivatives
OKA-870R is an integrated controller for a car body control, includes the keyless entry receiver.
The integrated. controller consists of the multiple control functions as follows, centralized door lock,
turn-signal lamp, room-lamp, intermitted wiper, power window timer, ignition key illumination,
warning buzzer and so on.
Note : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications, However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Modifications not expressly approved by the manufacturer could void the user's authority to operated the equipment
under FCC rules.
-5-

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