J Communications Road Eye JS-300C User manual

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User Manual
(Model: JS-300G)
J COMMUNICATIONS CO.,LTD.
Address: 124-4, Ojeon-dong, Uiwang-si, Gyeonggi-do, Republic of Korea
Tel: [phone], Fax:[phone] http//:www.jcomco.com

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Table of Contents
1. Product Introduction
2. Precautions for Safety
3. Cautions in Use
4. Specification
5. Package Contents
6. Description of Part
7. LED Signal Descriptions
8. Installation Guide
9. Function Description
10. How to use Viewer Program

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Terms of use
The contents of this document are protected by applicable Republic of Korea and International Copyright
Laws. Unless otherwise stated, the copyright owner is J COMMUNICATIONS CO.,LTD. The document and
information contained within may not be copied, transmitted, reprinted, published, translated, hosted, or
otherwise distributed by any means without the explicit written permission of the copyright owner.
In no event shall J COMMUNICATION CO.,LTD. its distributors or suppliers be liable to any third party for any
general, special, indirect, incidental, or consequential damages whatsoever arising out of or relating to the
information/ software provided in the product package.
Thanks for purchasing Road Eye, JS-300G, a driver recording system.
- Please be sure to read this manual in details before use.
- We do not provide a warranty for the compatibility of some accessories which are not provided by us.
We are also not responsible for any defect caused by such accessories.
- After getting the warranty card, please check the purchasing data (Date, Shop Info) on it.
Road Eye Viewer Program which is provided is designed to be run on Window 2000/XP/Vista.
Warning!
Road Eye is a device to assist a safety driver.
We are neither responsible nor compensate for any defect and damage caused by user’s misuse and
carelessness.
CAUTION
Danger of explosion if battery is incorrectly replaced.
replace only with the same or equivalent type.

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1. Product Introduction
Road Eye is a Driver Recording System which applies GPS (Global Positioning System), GPRS and 3D
acceleration gravity sensor (G-Sensor).
Before using this product, please be sure to read this manual.
Actual product specifications may differ from what is indicated in this manual as product
enhancements are implemented without prior notice.
Printed at the time of production, this manual may contain technical or editorial mistakes or omission.
2. Precautions for Safety
To prevent causing damage to the user’s property and to ensure the user’s safety, please read carefully
the following precautions.
While driving, never perform any operation and always park the car in a safe place first
before operating the device.
Do not disassemble, repair, or reconstruct without an authorized technician.
Use the device under proper temperature.
Leaving the device for a long time under hot or cold temperature can be a cause of
malfunction. (Proper Temperature: 0 ~ 60℃)
Avoid exposing this product to shock or impact and keep it away from magnetic fields or
vibration.
Keep the product away from wet places.
In using vehicle power, do not use for a long time with the engine off.
It may be a cause of discharge.

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This product is designed to be used with Cigar Jack Power.
In case of using direct electric power (B+ Power) of car, please discuss with a
specialist, and any problem occurred in this case will belong to users responsibility.
3. Cautions in Use
3-1. Cautions
zPerforming while driving can be a cause of accident. Always park the car in a safe
place first before operating the device.
zCheck the installation status before driving. Driving under the physical conditions
such as uneven, a sharp curve in the road with unstable installation might cause
damage.
zIn using vehicle power, please first check if there is no problem with the power
supply before connecting the device to the cigar jack adaptor. Any sudden power
spike may damage the device.
zThis product is designed to automatically record a video file, triggered by a user-
defined level impact to your car. The manufacturer does not guarantee about
every impacts on your car to trigger this function.
zPrevent any foreign substance to come in contact with the memory card or the
internal parts of this device, as it might cause malfunctions.
Keep the lens clean and avoid any obstacles in the camera angle to get the clear
view.
zDo not put other substances around the device. It can be mirrored through the
windows and recorded with accident images.

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zIn the accident getting less impact than the minimum user defined, the image may
not be recorded. (Refer to the manual)
zRights of all the software and hardware related to this product belong to
J COMMUNICATIONS CO., LTD. Unauthorized reproduction, processing
and distributing can be punished by intellectual property rights management
law as well as claimed compensation for damages.

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4. Specification
Front Camera 120° ⅓” CMOS 300K Pixel Digital Sensor / WDR Support
External Camera Option (90° ¼” CCD 270K Pixel NTSC)
Recording Resolution
H.264 (VGA 640*480 up to 30fps)
★2ch use : VGA 640*480 up to 15fps
GPS Internal GPS
Shock Sensor Internal 3D G-Sensor
Storage SD Memory Card (1GB ~ 16GB)
Audio Internal MIC
Power DC 12V ~ 24V (From Car adaptor)
File Saving Upon Impact (Automatic/Manual)
Normal Recording (Full Time) Support
Real Time Clock Support
TV-Out Support
Size 119.5(L) mm x 55(W) mm x 31.7(D) mm
Weight(g) 157g

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5. Package Contents
Please check the contents after opening the gift box. (Refer to the below images)
JS-300G
Cigar Jack Power Cable SD Memory Card User Manual
Viewer Program CD A/V Cable (For TV Connection) Cable Tie / Holder
GPRSAnt(OnlyforJS-300G) ExternalCamera&Cable(Option)
(Actual product specifications may differ from the images in this manual as product enhancements are
implemented without prior notice.)

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1.TV Out Jack (A/V Mode)
2.External Camera Video In
Jack
6. Description of Part
SIM Card Slot
(Only for JS-300G)
RED: Event Mode
GREEN: Normal Mode
Front Camera
Main Power
Ext
e
rn
a
l
Double Faced Foam
Tape
GPRS Antenna
Jack
Lock
SD Card
Emergency
Mode Selection Switch
1. A/V : TV Out
2. External
C
amera
Function
Reset
YELLOW: GPRS
(
Onl
y
for
BL
U
E
:

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7. LED Signal Descriptions
Classification
RED
(Event)
GREEN
(Full Time)
YELLOW
(GPRS)
BLUE
(GPS)
Status
Power connecting ( With SD Card ) ○○○Blinking at 1 sec interval one after
another.
Power Connecting (Without SD Card) ○○Blinking at 0.5 sec interval by turns
Stand by Event Recording ○Blinking at 1 Sec interval
When Event occurs ( Or when press Emergency
Key)
○Blinking at 0.1 Sec interval for 3
seconds
On Normal(Full Time) Recording ○Blinking at 1 Sec interval
When GPS signal is available ○Blinking at 1 Sec interval
When GPS signal is not available ○Light on continuously
When calibrates G-Sensor ○Blinking at 0.1 Sec interval for a second
Firmware Upgrade ( When Power is connected ) ○○○Light on at 1 sec interval rapidly by
turns
Firmware Upgrade (On progress ) ○Blinking at 0.1sec rapidly
Firmware Upgrade (Completed) ○○○Light on at the same time
File Viewer ( When connected ) ○Light off after lighting
File Viewer ( When runs ) ○Light on continuously
When searches GPRS Network ○Blinking at 1 Sec interval
When GPRS Network is connected ○Light on continuously
When transmits GPRS Data ○Blinking at 0.1 Sec interval
System Error ○○Light on continuously (with Orange
color)

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8. Installation Guide
8-1 .PRECAUTIONS
zTurn off the engine before installation.
Connect the main power of the device at last after installation. ( , here in after called
“Power”)
zInsert SD Memory card before connecting the device.
zInstall the device in safe and bright place.
zConnect the main power through cigar jack provided (DC 12V ~ 24V).
8-2. Installation
1. Attach the device
Check and select the proper place where does not disturb driving
on the front window and attach the device with a double faced tape.
2. Fix the device
Get the camera lens focused on the front and fix with Lock
Screws of the device.
★GPS reception part should be exposed to the window for the
better reception.
3. Connect the power
Connect the cigar jack to the power port and check if the power
is working properly.
★SD Card should be inserted before connecting the power.
Otherwise, Red and Green LED would be blinking at 0.5sec
interval by turns.
4. Calibrate G-Sensor (Acceleration Sensor)
Press “Down” for 3 seconds when power is on, and calibrate G-Sensor
value. (Check if Red LED is blinking at 0.1sec interval rapidly for a
second.)
★When calibrates G-Sensor, put the device on flat place.
When changes the place to attach the device, calibrating should be

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Checkups after installation
External Camera Installation (Option)
1 Select a place to install
Select a place to install the external camera and fix with the screw provided.
(The connecting part should be toward to the ground.)
2 Connect the camera to JS-300G
Connect the camera to JS-300G with the cable provided. ( , A/V)
3 Fix the camera angle
After adjusting camera angle, fix the camera with the lock screws on the bracket.
★Disconnect the power during installation of the camera.
★External Camera is only for internal use.
5. Working Test
Play back the saved data after testing drive. Then, check if the
data is recorded correctly and revise the camera place on it.
★JS-300G is working based on High- Sensitivity Camera Sensor.
The recorded video image can be shown dark if the device is
installed toward the sky.
1. If the camera angle is not proper, adjust with rotating the lock
screw and fix it after. (Refer to the step 2 ~ 5).

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8-3. Start
1. Insert SD Card into JS-300G, then power on. Red, Yellow and Blue LED will light sequentially
at a second interval. about 3 seconds after lighting, JS-300G will start running.
If it powers on without SD Card, Red and Green LED will be blinking alternately at 0.5 sec interval.
In this case, disconnect the power and connect power again after inserting SD Card.
2. Recording is run based on Event and Normal record mode (Full Time Mode), and the present
recording mode is saved and memorized into Configuration Variable Setting File in SD Card.
(The Factory default record mode is Event Mode and it would be same after formatting SD Card.)
3. To change the recording mode, connect power under the status of pressing Emergency key
simultaneously.
The mode will be changed either Event Record mode to Normal Record Mode or Normal
Record mode to Event Record Mode.
The changed recording Mode would be saved into SD Card and maintained until the mode is
changed by user. When press Emergency Key, just press it until Red LED turns on.
8-4. Event Record Mode
1. During Event Record Mode, Red LED is blinking at a second interval.
2. When the impact value recognized by G-Sensor (Acceleration sensor) is bigger than User-defined
value or when user presses Emergency key manually, the image and voice before 10 seconds
and after 20 seconds of the event will be saved as a file.
When an event occurs, Red LED will be blinking rapidly at 0.1 second interval for 3 second and
inform of it.
3. Another event occurs while the previous event is saved, the event would be ignored.
(If emergency record is required, just press Emergency button and recording will be started. After
recording, the mode will be back to Event Record Mode.)
Event can be recorded up to 100 times as a file, and from the file recorded first it would be over
written sequentially when the number of file is exceeding the maximum.
4. When the power is disconnected on Event Record Mode, JS-300G would be shutdown after saving
the event, maximum 20 seconds, if it is on recording an event. Otherwise it will be shutdown
instantly.
5. If presses Stop Key, JS-300G will complete recording event and all functions will be stopped. (All
LED lights will be off) to start JS-300G again, disconnect power and connect again.

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8-5. Normal Record Mode (Full Time Recording)
1. Green LED is blinking at a second interval on Normal Record Mode.
2. Normal Record Mode records video and audio at 5 minute interval successively.
3. If SD Card storage is full during Normal Mode, JS-300G will overwrite from the file saved first.
4. During Normal Mode, G-Sensor (Acceleration Sensor) and Emergency Key function will be ignored.
5. If power is disconnected during Normal Mode, JS-300G will be shutdown after 10 second
additional recording. If presses STOP Key on Normal Record Mode, JS-300G will complete
recording and all functions will be stopped. (All LED light will be off). To start JS-300G again, disconnect
power and connect again.
8-6. Reset
1. There can be unexpected system errors. If the error occurs, Green and Red LED light columns are on
at the same time and lighting on Orange color continuously.
2. When system error occurs, disconnect power. Then press Reset key with the pointed stuff such as a pin,
a ballpoint pen…etc., and connect power again. JS-300G will be re-booting and run.
8-7. GPS Functions
1. If GPS data is not received properly, Blue LED will blink at a second interval. When GPS Data
reception is working properly, Blue LED will be lighting continuously.
2. If presses Play Key on either Normal Record Mode or Event Record Mode for more than 3
seconds, GPS Cold Start will be operated with Blue LED blinking rapidly at 0.1 second for a
second.
3. If GPS Data reception is running correct, set the time of internal RTC (Real Time Clock) on GPS
time. Once set on GPS time, it will maintain the exact time without any additional time set. The
internal RTC time is reflected with connecting the power again after power disconnection.
4. If there is any substance which can give the bad effect to GPS reception, please leave it in the
distance from JS-300G
8-8. Acceleration Calibration Function
zG-Sensor (Acceleration Sensor) shows the Acceleration Value of X, Y and Z axis on the
unit of acceleration of gravity, 1g = 9.8m/s2. And the directions are as below image.
If a vehicle is parked on the flat place, G-Sensor data is supposed to have the value of X = 0g,
Y = 0g and Z = +1g. However, it would be changed by the place JS-300G is placed and
mounted. Thus G-Sensor should be calibrated to get more exact data.

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zIf presses Down Key on either Normal Record Mode or Event Record Mode for more than 3
seconds, Calibration will be operated with Red LED blinking rapidly at 0.1 second for a
second.
After the calibration, G-Sensor Data will show the value, X = 0g, Y = 0g and Z = +1g,
regardless of the mounting place.
ÂG-Sensor Calibration must be done on the flat place after parking.
G- Sensor Data Analysis (Example)
Viewer Program shows G-Sensor Data Graph as the below images upon Log Data which is saved
with video files and driving status can be analyzed through the graph.
Stop
Acceleration Deceleration
RightTurn LeftTurn

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Head-On Collision Back-Up Collision
9. Function Description
9-1. GPRS Functions
(GPRS Function is only for JS-300G)
9-1-1. GPRS Specification
zUsed band: Quad-band (E-GSM 850 / 900 / DCS1800 / PCS1900 MHz)
zOperated Frequency ;
-. EU (Up link: 880.200 MHz ~ 914.800 MHz , 1 710.200 MHz ~1 784.800 MHz)
(Downlink:925.200 MHz ~ 959.800 MHz, 1 805.200 MHz ~ 1 879.800 MHz)
-.FCC(Up link: 824.200 MHz ~ 848.800 MHz , 1 850.200 MHz ~1 909.800 MHz)
(Down link: 869.200 MHz ~ 893.800 MHz, 1 930.200 MHz ~ 1 989.800 MHz)
zOutput power ;
Max.13dBm(20 mW)_Conducted power including antenna gain, declared by the applicant
zCommunication Access Type : TDMA (Time Division Multiple Access)
zChannel spacing : 200 KHz
zChannel Number ;
-.EU(900 MHz Band : 172 Ch, 1 800 MHz Band : 373 Ch)
-.FCC(850 MHz Band : 123 Ch, 1 900 MHz Band : 298 Ch)
zCommunication Type : Full duplex
zData Rate (kbps): 57.6 kbps
zData Modulation : GMSK
zITU emission Code : 290KGXW
zAntenna type and Length ;
-.Type: Dipole Antenna, Gain : 824~960 MHz (1.4 dBi), 1 710~1 990 MHz (0.2 dBi)
Length: 104.8 mm
zWeight & Size : 157g / 119.5(L) mm x 55(W) mm x 31.7(D) mm
zPower rating : DC 12V ~ 24V (from External Car Adapter), 2 A
zSensitivity
- 107 dBm (typ.) @850 / 900 MHz, 106 dBm (typ.) @ 1800 / 1900 MHz

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zYellow LED blinks under GPRS disconnection and it is lighting continuously when GPRS is connected
and available to data Tx / Rx.
zWhen GPRS Data is transmitted or received, Yellow LED blinks at 0.1 second interval.
zJS-300G provides to transmit the below data such as G-Sensor value, GPS data through SMS to the
designated number.
zJS-300G provides Data Transmission function through FTP and Snap shot files on JPEG format can
be transmitted to the designated FTP Server.
**** JS-300G has just basic GPRS functions due to the fact that the detailed GPRS functions
are different by every single customer. Then if you need any other GPRS functions, please
contact us. 82-31-428-7326 / [e-mail]
9-1-2. GPRS Configuration Set
Click Configuration Setting button, on JS-300G Viewer Program. Then, click GPRS Tap and
the below GPRS Configuration setting image will pop up.
Date: 2009-02-01 04:19:30
G-Sensor: X=-0.02, Y=+0.93, Z=-0.03
Latitude: 37.237981 N
Longitude: 126.508762 E
Speed: 51 km/h

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1. GPRS Bearer
-. IP Address: Proxy Server IP Address. Proxy Server can be skipped when it is not used.
. APN: Access Point Name
-. Proxy port: HTTP Proxy port (TCP)
-. User ID: Authentication User ID
-. Password: Authentication Password
2. SMS phone number
Type a phone number which SMS is sent to.
3. FTP
-. IP Address: FTP Server IP Address
-. User ID: Authentication User ID
-. Password: Authentication Password
-. Port: FTP port
4. Send period
Set the interval to send.
5. Send via
Set the protocol which SMS is sent via.
9-2. Playback through TV
Cable connection for TV Out
zPlease connect A/V Cable to the jack on JS-300G.
zConnect Yellow color A/V Output cable to Composite Video Output Terminal on TV and
connect Red (Right) and White (Left) color A/V cables each to Composite Audio Output
Terminal on TV.
zSelect A/V, CAM 2 Mode Selection Switch on A/V.
zConnect a Power Adapter to Power 1.
* Adapter is an optional item which should be purchased separately.
Usage of TV Out.
TV Out is used for the below two usages.
1. Real Time monitoring of forward shot images.
2. Play back the video file saved into SD Card with connecting TV directly. (Please refer to File
Viewer Mode)If connect the power without pressing any key after connecting A/V Cable to TV,
JS-300G will start on Forward Shooting Video Output Mode. And if connect the power with
pressing Play key, it will start on File Viewer Mode.

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★TV-Out Signal Format (NTSC, PAL, PAL-M) setting should be done through the configuration set
on the viewer program.
File Viewer Mode
Connect the power under the status of pressing PLAY Key and File Viewer Mode which can replay
the saved files through TV-Out is started. (Green LED is blinking on operating.)
1. Press PLAY Key until Red LED is on after power connection.
2. Mode Selection Slide Switch must be on A/V.
Function of each key
In the case there are files recorded by 1channel and 2channel, which are mixed up together on
EVENT FILE VIEWER, the file recorded by 1channel is played first and the file recorded by
2channel is played after it automatically. If presses STOP Key during playing 1channel file, the
file recorded by 2channel would be started.
Item File List Menu On Playing
PLAY Menu Select / Playback the
selected file Replay / Pause
STOP Move to top menu Stop Playing / Move to the file list
UP Move up Replay 10 second forward
DOWN Move down Replay 10 second backward.
* 1. Channel: Front Camera
2. Channel: External Camera
Playback the file recorded on Normal(Full Time) Mode
1.SelectNORMALFILEVIWER 2.SelectNormalFileFolder

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3. Select the target file to playback
zPlayback the file recorded on Event Mode
1. Select EVENT FILE VIWER
2. Select EVENT File
9-3. Playback through PC
Road Eye JS-300G Viewer Program installation
1. Insert CD provided into PC and click “Next” when the below setup Wizard start image pops up.
2. Select the folder to install the program as below image and click “Next”