Omron Automotive Electronics Korea OKA-330T RF Keyless Entry System (Transmitter) User Manual
Omron Automotive Electronics Korea Co., Ltd. RF Keyless Entry System (Transmitter) Users Manual
Users Manual
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| Document ID | 535789 |
| Application ID | mmN9NJcakVlHLqHl0UvHGQ== |
| Document Description | Users Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 15.8kB (197504 bits) |
| Date Submitted | 2005-04-26 00:00:00 |
| Date Available | 2005-04-26 00:00:00 |
| Creation Date | 2005-04-25 17:59:33 |
| Producing Software | Acrobat Distiller 6.0 (Windows) |
| Document Lastmod | 2005-04-25 18:03:19 |
| Document Title | Users Manual |
| Document Creator | PScript5.dll Version 5.2 |
| Document Author: | erwin_ryu |
OMRON AUTOMOTIVE ELECTRONICS KOREA OKA-330T Transmitter, RF Keyless Entry System Table of contents 1. Constitution of the Radio Frequency Keyless Entry system Controller for vehicle ................................................................................................................. 2. User's manual (provisionally) ............................................................................... 3. Block diagram ........................................................................................................... 4. Specification ............................................................................................................... 5. Features ...................................................................................................................... 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, and (2) This device must accept any interference received, including interference that may cause undesired operation. Caution: Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void user's authority to operate the equipment. 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 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 continuously the PANIC button during 0.5s, horn will alarm. - 2 - 3. Block diagram This is block diagram concerning to the transmitter L OC K 8 BIT UNL OC K TRUN CPU EEPRO M TRANSM ITION RF CIRCUIT P ANIC 9.807813M Hz 4.19 M Hz figure 3.1 block diagram of the transmitter - 3 - 4. Specification 4.1 CPU Type uPD789860-xxx(8bit) Manufacturer : NEC Corporation ROM 4 Kbytes RAM 128 bytes EEPROM 32 bytes Clock frequency 4.19MHz Clock frequency generation X-TAL Package 20pin SSOP 4.2 RF block Carrer frequency 313.85MHz Frequency generation X-TAL Modulation FSK Bit transmission rate 500bps or 1000bps Bandwidth 10KHz RF output power (field strength) 4000μ V/m at 3m 4.3 Others Dimension 62.0mm×33.7mm×14.3mm Weigh 21.5g Battery Lithium cell (CR2032) Manufacturer : PANASONIC Battery corporation etc. Operation Voltage DC3V Operation Temperature -20℃～+60℃ - 4 - 5.Features 5.1 Transmission frame The transmission begins immediately in case of LOCK and UNLOCK, TRUNK and PANIC is begun after 0.5s. The transmission frame consists of the synchronous frame and the data frame. The synchronous frame has 320bit synchronous codes that it will be used for the receiver to wake up. The data frame consists of 24bit length identification code, 16bit security code and 4bit function code and 8bit crc code. 16million different identification codes are available. The security code is always changed in case of any of the buttons is pressed. The transmission time is typically 300 milliseconds. 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. - 5 -
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