System Configuration
1. The system is installed in vehicle, no monitor nor keyboard to be connected when system is
running. For system setup such as, testing, camera position in the vehicle, an external keyboard
and monitor are required.
2. The system accepts clean 12VDC and provides the same 12VDC to supply the external camera as
an option. User needs to provide a regulated 12VDC to this system for the best performance.
3. A Lithium battery is used to backup the system about 15 second to prevent from the file corrupt due
to unexpected power drop. If video recording is taken place this period, it will close file correctly
before turn off the power.
4. A micro controller (MCU) is use to monitor the power and main DSP status to prevent from system
hang. If the system hanged due to any reason, the MCU will re-boot the system until it is operating
normally. If the system cannot be rebooted the first time, it will repeat until it is succeeded.
5. The UART interface is implemented for PC connection. A PC application software will be provided
to setup the system and enter the vehicle number.
6. RTC is used for date time display and stamp to the video. The date time can be set by the PC
interface, thru UART port. This makes the operation simpler.
7. File format of video clip is MJPEG. It can be playback on the module or PC. The video clip can be
played in 4 mode, forward, backward, pause, resume playing and stop. In PC, a viewing software is
required since the file format is proprietary.
8. No user menu for the module operation. No file delete is allowed.
Board layout and connector location
J6
Video In & DC out
J4
Video Out
Backup Battery
PAL/NTSC select
SD Card Slot
J3
Keyboard
J1
UART
ON-OFF
Switch
J8
12VDC In
Operating the Module
1
Power up system the first time: before power up, connect the device as below:
1.1
J3: to keyboard thru a 5 pin flat cable
1.2
J4: video output to TV set using coaxial cable
1.3
J6: video input, connect to camera output; 12VDC output for camera, if required
1.4
J8: connect the power cable, accept only 12VDC+/-1V, note polarity.
1.5
Insert the SD card. There is no flash memory on board, if there is no SD card, it will not
perform recording. This system supports up to 4G card.
1.6
Slide the on-off switch to ON, now the system will start operation. The welcome logo will
display on the TV screen. Note the power up time may be differed from size of memory
card.
All the connectors have the polarity, need to take care before plug in.
2 Preview
Mode:
2.1
Use UP key to turn motion detect (MD) on-off, by default MD is ON.
2.2
Press SNAP key to take a video clip instead of MD function. During recording, a red dot will
be appeared and flashing on top of the screen. It can’t be stopped unless it reaches the
Release 1.0 20090320
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