Omron Automotive Electronics Korea OKA-751R RF Keyless Entry System (Receiver) User Manual

Omron Automotive Electronics Korea Co., Ltd. RF Keyless Entry System (Receiver)

User Manual

Transmitter, RF Keyless Entry System OMRON AUTOMOTIVE ELECTRONICS KOREA OKA-751R
Table of contents 1. Constitution of the Radio Frequency Keyless Entry system Controller for vehicle .....………………………………………………………………………………..1 2. User's manual (provisionally) .....................................................................2 3. Block diagram ...........................................................................................3 4. Specification .............................……………………………………………………….4 4.1 CPU ………………………………………………………………………………………….4 4.2 EEPROM …………………………………………………………………………………….4 4.3 RF Receiver Module ………………………………………………………………………4 4.4 Other ………………………………………………………………………………………. 4 5. Features .................................................................................…………..…..5 5.1 Door lock control 5.2 Battery saving 6. Derivatives .................................................................................... 5 7. PCB ......................................................................................... 6 7.1 Circuit diagram ………………………………………………………………………….6 7.2 Parts layout ………………………………………………………………………… 7-10 7.3 Parts list ……………………………………………………………………………… 11-12 7.4 Connector ……………………………………………………………………………….13 7.5 Photographs …………………………………………………………………………..14-15 8. RF Module ............................................................……………….. 16 8.1 Block diagram …………………………………………………………………………..16 8.2 Circuit diagram ………………………………………………………………………….17 8.3 Parts Layout ……………………………………………………………………………18-19 8.4 Part list ……………………………………………………………………………………21 9. Sticker ................................................................................ 22 10. Antenna ...........................................................................……. 23
FCC Operation Statement FCC Compliance Statement Caution !This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: (1) This device may not cause harmful interference (2) This device must accept any interference received, including interference that may cause undesired operation.
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. Transmitter f = 313.85MHz - 1 - OPERATION ACTION LOCK lock the door UNLOCK unlock the door TRUNK open the trunk PANIC alarm the horn
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 any door is open or 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 any door is open or the key is in the ignition switch. TRUNK When you push continuously the TRUNK button during 0.5s, TRUNK will open. PANIC When you push the PANIC button, horn will alarm. - 2 -
3. Block diagram (Main board) This is block diagram concerning to the receiver - 3 -
4. Specification 4.1 CPU 4.2 EEPROM 4.3 RF Receive Module 4.4 Others - 4 - Type ROM RAM Clock frequency Clock frequency generation Package MB90F867(16bit) Manufacturer : FUJITSU 128KByte 6KByte 4MHz Crystal resonator 100pin QFP Type Memory Package S-93C56XXX Manufacturer: Seiko. Elec 2Kbit 8pin SOP Type Local clock frequency Frequency generation Modulation Scheme Bandwidth Carrier Detect Sensitivity G8X-21RXIAM Manufacturer: OMRON IIDA 313.85MHz Crystal resonator FM(superheterodyne) ±200 KHz 11dBuVemf Dimension Weigh Battery Operation Voltage, Current 112mm× 92mm × 36mm 324g CAR Battery(DC 12V) DC12V,50mA (4mA on standby) -40℃ ∼ +80℃
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-751R 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. - 5 -

Navigation menu