Shenzhen DEF Electronic Technology Co., Ltd.

•              4.3 inch DVR rearview mirrorscheme

Main Functio:Video Rearview systemDVR（Vibration testing video）、AV、BT

System Specification

Sensor Module                                OV9712model

DVR Main control                           NT96220

AV Input（CVBS 1Vp-p）              1Vp-p AV，Button to switch to the channel

Video Rearviw System

（CVBS 1Vp-p）                                    1Vp-p Rearview AV,Toautomaticallydetect rearview signal，it can automatically switch to the channel,if there is a reverse signal or a siganal,cannot switch by hand

Bluetooth                                   BT999（optinal）

LCD Display

Brand

Size                                             4.3 inch 40P interface compitable with HSD

Resolution                                  480*272

DVR

Interface                                     TF Card≦32G

Video Recording                      support cyclic recording

Video Resolution                              QVGA VGA WVGA HD720P 1080P 1080FHD

battery capacity                               Minimum capacity：140MAH

Repeater operation：

第1部分：rearview board touch key-press：

Up/V_          Model       Power       Menu           Down/V+

Powerkey：                                                                  model：

A：startup（short press）                                         A:   AV/DVR condition swich function（short press）

B：AV condition guanbing（short press）

C：DVR condition，play/pause/confirm（press）

D: Power off（long press）

上/V_：                                                                     下/V+  ：

A：DVR Up of setting menu options（short press）    A：DVR Down of setting menu options（short press）

B:   Decrease of volume control（long press）   B: Increase of volume control（long press）

C: Decrease of OSD menu（short press）          C:   Increase of OSD menu（short press）

D: Recording Turnoff of DVR(short press）         D: Recording Turnon of DVR（short press）

E: Bluetooth Turn on the phone when a call comes    E: Bluetooth Hang up the phone when talking,pressing V+

Menu：

A：OSD Menu on AV condition（shortpress）
B：Setting menu on DVR condition（shortpress）

C：Playback of DVR Condition and Switchover between the Video（long press）

Shenzhen DEF Electronic Technology Co., Ltd.

Part 2：Car power supply，Auto signal connection，Assume Preferred rearview signal，The machine built-in batteray

A：This system default needs to connect the backup power supply of car BATT 12 v and car electric ACC accessories line, and reverse line signal.At the same time the system built-in a small capacity lithium battery, 300 mah / 3.7 v.While completely missing the outside power supply,it can provide video system to supply of a short period of time in order to prevent the errors TF card file system of the video.

B：Only when the ACC wire is high electricity < the car has started attachment >, the display system to

,                             enter standby work.Short press power key or pour from low level to high electricity at ordinary times

car line, display screen work. When the ACC system to point from high to low levels, according to the system will automatically enter the standby. At the same time, the video system also immediately stop video, save the file, and enter the standby mode.to avoid excessive consumption car battery power for

a long time, the car can not start properly.

C：Current on standby condition: BATT 12V power supply is less than 60mA.

D：When the AC line is high and reverse line signal changeinto high electricity at ordinary times, the system automatically

open back to rear view AV signal display status. The state, with keys and remote control cannot switch to the other channe. When the reverse signal into a low, continuously operate more than 10 seconds, the display system automatically return

back to reverse before the start of state: standby or other channels

E：Reverse signal can also be detected by testing the AV signal if it has any signals, hardware compatibility design is given,

by the customer to choose whether to use this way

Part 3:The Function and Operational Definition of Car DAR
1：Power On St，

when the car start , Which is defined as the lead of the outside line, ACC accessories line level into a higher, DVR power supply immediately to electricity.Note: at this point the rearview mirror display screen doesn't open it.

After DVR starts, checking the TF card immediately.When correctly read card and after the initialization, it will have a cyclic video recording, < the process is about 3-5 seconds according to the different card capacity >. When the ACC is tested into a low electricity at ordinary times, the engine is off , at this time the back the power of this system can also maintain DVRS work about 3 to 5 seconds, the DVR saved videos, and to turn it off immediately.

2: Vibration video：When the car did not start, DVR is in standby state, the DVR system will continue to monitor vibration sensor.When external force vehicle vibration amplitude is large, will automatically open the DVR system and work as mentioned before.< the initialization card and start video>. AT this time, if the car starts, the DVR will like video vehicle start and continue to cycle, otherwise it stops after 1.5 minutes and turn off the DVR system.

3The definition of cyclic video：Due to the limited capacity of the SD card, so video file use the footage of about 30 seconds.When the TF card is close to be full,it will automatically delete the first file and keep the latest file inside of the card .It uses the method of serial number to confirm the order.

4：Playback：On DVR video pause condition, we can be long press of menu key to enter the playback state.;

5：DVR Working state，we summarized the following five kinds of DVR:

Condition                           Insturuction