NIDEC MOBILITY G8D-399H-A Keyless Entry Remote Control Transmitter User Manual 1
OMRON Automotive Electronics Co. Ltd. Keyless Entry Remote Control Transmitter 1
User Manual
G8D-399H-A
Transmitter, RF Keyless Entry System
＜As for the undermentioned product,the amount of SW is different by the same circuit＞
【Product No.】 【Function of SW】 【Amount of SW】
G8D-399H-A-1 LOCK,UNLOCK, SLIDE DOOR RIGHT
SLIDE DOOR LEFT,TAIL GATE,PANIC 6SW
G8D-399H-A-2 LOCK,UNLOCK, SLIDE DOOR RIGHT
SLIDE DOOR LEFT,TAIL GATE,PANIC 6SW
G8D-399H-A-NTG LOCK,UNLOCK, SLIDE DOOR RIGHT
SLIDE DOOR LEFT,PANIC 5SW
G8D-399H-A-NP LOCK,UNLOCK, SLIDE DOOR RIGHT
SLIDE DOOR LEFT,TAIL GATE 5SW
G8D-399H-A-NGP LOCK,UNLOCK, SLIDE DOOR RIGHT
SLIDE DOOR 4SW
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G8D-399H-A G8D-399H-A-1 G8D-380H-A-2 G8D-380H-A-NTG
G8D-399H-A-NP G8D-399H-A-NGP
Rough sketch
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1. Constitution of the Radio Frequency Keyless Entry
System with Door Lock Controller for vehicle
The radio frequency keyless entry is a system that it controls locking and unlocking the door by
wireless remote controller. This system consists of two 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, and security code and function code. The RECEIVER is fixed inside the
vehicle. It works intermittently to reduce 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 （Open the window）
SLIDE DOOR RIGHT Open or Close the slide door right
SLIDE DOOR LEFT Open or Close the slide door left
TAILGATE Open or Close the tail gate
PANIC MODE Beep the born and flush the small light.（it continues 30 seconds）
This receiver also controls wired operation. When the key is in the driver’s side key cylinder, all doors
will Unlock if the key is turned to UNLOCK and hold more than one second. In case of the operation time
is shorter , the only diver’s side door is mechanically unlocked. It is also available to control the door lock
status by using the remote door control switch(both driver’s and passenger’s side)
Transmitter
LED UNLOCK button
TAIL GATE button
PANIC button
LOCK button
SLIDE DOOR LEFT
button SLIDE DOOR RIGHT
button
f =313.85MHz
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2. User’s manual (provisionally)
REMOTE TRANSMITTER
You can lock and unlock your vehicle with the remote transmitter.
【TRANSMITTER Assy】
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 in 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.
When you push the UNLOCK button more than about 1.0 second , the window will open.
SLIDE DOOR RIGHT
To open or close the slide door right, push the SLIDE DOOR RIGHT button for approximately 0.5
second. The right slide door will not operate if the key is in the ignition switch.
SLIDE DOOR LEFT
To open or close the slide door left, push the SLIDE DOOR LEFT button for approximately 0.5
second. The left slide door will not operate if the key is in the ignition switch.
TAILGATE
To open or close the tailgate , push the TAILGATE button for approximately 0.5 second.
The tailgate will not operate if the key is in the ignition switch.
PANIC MODE
Panic mode allows you to remotely sound your vehicle’s horn to attract attention. To activate this
mode , press and hold the PANIC button for about one second. Your vehicle’s horn will beep for about
30 seconds.
To cancel Panic mode before 30 seconds , press any button on the remote transmitter. You can also
turn the ignition switch is in ON.
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3. Specification
3.1 CPU
Type UPD789860 (8bit)
Manufacturer: NEC Corporation
ROM 4K bytes
RAM 128 bytes
EEPROM 32 bytes
Clock frequency 5MHz
Clock frequency generation Ceramic resonator
Package 20pin SSOP
3.2 RF block
Carrier frequency 313.8∼313.9MHz
Frequency generation Crystal resonator
Modulation FSK
Bit transmission rate 1000bps or 2000bps
Bandwidth 120KHz
RF output power (field strength) 6000μV/m
3.3 Others
Dimension 62.1mm×35mm×13mm
Weight 21g
Battery Lithium cell (CR2025)
Operation Voltage DC 3V, 20mA
Operation temperature -20℃ ~ +60℃
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4. Features
4.1 Transmission frame
The transmission begins immediately in case of any button is pressed.
The transmission frame consists of the synchronous frame and the data frame. The synchronous frame
has 324 bit codes that it will be used for the receiver to wake up. The data frame consists of 24-bit length
identification code, 16-bit security code, 4-bit function code and 8-bit quality check code.(sometimes).
16000000 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 220 milliseconds.
4.2 Battery saving
To prevent the battery exhaustion, the microcomputer of the transmitter is usually inactive. When the
button will be pressed, the microcomputer wakes up immediately and judges which button is pressing.
Then the microcomputer constructs the transmission frame and radiates it from the antenna. After
transmitting, the microcomputer switches stand-by mode by itself.
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! CAUTION
The remote control switch is a precision electronic device. Therefore, pay attention to the following:
･ Do not impose shock on the remote control switch.
･ Keep the remote control switch dry.
･ Do not disassemble the remote control switch.
Your keyless entry system operates on a radio frequency subject to Federal Communications
Commission (FCC) rules and Industry Canada rules.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following tow
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 of the device.
“Complies with RSS-210 of Industry Canada.”
NOTICE
This equipment has been tested and found to comply with the limits for a Class B 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 instruction, may cause harmful interference to radio communications However
there is no guarantee that interference will not occur in particular installation. If this equipment dose
cause harmful interference to radio or 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.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.