Load dump means the disconnection of a powered load. It can cause 2 problems.
Failure of supply to equipment or customers II. Large voltage spikes from the inductive generator(s) In automotive electronics, it refers to the disconnection of the vehicle battery from the alternator while the battery is being charged. Due to such a disconnection of the battery, other loads connected to the alternator see a surge in power line. The peak voltage of this surge may be as high as 120 V and the surge may take up to 400 ms to decay. The transient high voltage which ususally occurs in automotive will damage the rear view camera system, if the system has no protection circuit.Our monitor uses a special component inside to avoid the damage. The transient high voltage will never damage our monitor. Following shows the test procedure. Connect power supply to DC input of load dump generator. Connect output of the load dump generator to component power supply lines. Set DC supply so that DC voltage to the component is 13.8VDC measured at the component. Chassis of DUT shall be physically isolated from the ground plane, and the DC supply should be electrically grounded to the ground plane. After test our monitor has no damage at all. Electrostatic discharge (ESD) is the sudden flow of electricity between two objects caused by contact, an electrical short, or dielectric breakdown. ESD can be caused by a buildup of static electricity by tribocharging, or by electrostatic induction.
ESD includes spectacular electric sparks, but also less dramatic forms which may be neither seen nor heard, yet still be large enough to cause damage to sensitive electronic devices. Electric sparks require a field strength above about 4 KV/cm in air, as notably occurs in lightning strikes. Other forms of ESD include corona discharge from sharp electrodes and brush discharge from blunt electrodes. The ESD will do harm to rear view camera system if there is no ESD protection circuit. When user operate and touch the monitor, the high electrostatic voltage of 2kv/4kv/5kv/6kv/8kv will discharge between the user and monitor, and the high voltage will damage the monitor.The high electrostatic voltage will never damage our monitor. Test methods: contact or air discharge are both acceptable. Isolate the DUT from ground-plate. We apply the discharge of 2kv/4kv/5kv/6kv/8kv to every point that the user may touch when operating our monitor. After test, our monitor still work well, no damage at all.
IP69K Waterproof and Dust-proof Test. One 7 Touch Screen Quad Digital Monitor+Four Rear View CCD Cameras+Two 10Meters Cable+Two 15Meters Cables+Split Power Cable+Accessories. Quad Monitor Camera System is Able to Show 4 Camera Views at one Time.
IR CCD WATERPROOF CAMERA, HEAVY DUTY, 4PIN SCREW CONNECTOR. 1/3 SHARP COLOR CCD, 600TVL, HIGH RESOLUTION. Touch Screen Quad Monitor Backup Camera System (DF-767C0114). Touch Screen Quad Monitor Backup Camera System Can be Widely used in Bus, Farm Tractor, Agricultural Machinery, Security vehicles and other visual aids monitoring.7 inches touch screen monitor support quad, triplex, dual, single 9 different view modes. Single- point touch to display single image, dual- point touch to display dual image, slid to turn on/off, shortcut touch to single view, easy to oprate. OSD MENU Separately Set Each Image Mode On/Off, Trigger Priority, Delay Time 0-30s. 7 inches Touch Screen Quad Monitor(Model:SP-767C). Digital Screen TFT LCD Quad Monitor with Removable Sun Visor.
Single View/Split View/Three View/Quad image View Selectable Totally 9 different view modes. OSD MENU Separately Set Each Image Modes On/Off. OSD MENU Separately Set Each Image Trigger Priority. OSD MENU Separately Set Each Image Image Delay Time 0-30s. OSD MENU Separately Set Each Image Can be Rotated to Mirror or Non-mirro.Single- point touch display single image, dual- point touch display dual image, slid to turn on/off. 1 Cable Solution System Make It Easy For Users To Install and Use The Device In Any Places. Display Resolution: 2400(H) X 480(V) dot. Support Four Camera Inputs:1.0Vp-p75. Wide view angle(CR:10):(up/ down): 45/65 (left/right): 65/65.
Operating temperature: -20 to +70. Storage temperature: -30 to +80. Load Dump: DC14+87V(Td400mS) 5pulses. Free Operating Voltage: DC11-32V (System Power Max 20W).External dimensions:LWT(185X124X48)mm(without mounting). Aluminum Shell Waterproof IR CCD Camera(MODEL:DF-41034). Image Type: 1/3 SHARP COLOR CCD. Effective pixel:NTSC:976(H)×494(V) PAL:976(H)x582(V). Usable Illumination : 0Lux(Built in 18pcs IR LEDs for Picture Support in the Dark). Power supply:DC12V (from Reversing Monitor). U- Support BracketAngle Adjustment ScrewRemovable Sun VisorElectrical Connecting CableExtension cable4User's Manual.
The item "7 SPLIT/QUAD TOUCH SCREEN MONITOR, REAR VIEW REVERSE SYSTEM KIT, 4 WIRED CAMERAS" is in sale since Friday, April 10, 2015. This item is in the category "Vehicle Parts & Accessories\In-Car Technology, GPS & Security\Parking Assistance\Camera, Monitor & Sensor Kits". The seller is "1stsafe" and is located in Guangzhou.
This item can be shipped to all countries in Europe, all countries in continental Asia.