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Video Surveillance Cameras Strengthen The Component

According to the use of different types of fiber optic cable, Video Surveillance Cameras divided into indoor fiber optic cable, outdoor cable, branch cable, Video Surveillance Cameras wiring cable. Fiber optic transmission according to the transmission can be divided into single-mode and multi-mode, so the general use of single-mode monitoring fiber monitoring.

Single-mode fiber: only transmit a mode of optical signal fiber, conventional G.652, G.653, G.654, G.655 and other transmission grade classification, Video Surveillance Cameras single-mode fiber transmission 100 megahertz signal distance of up to tens of kilometers.

Multi-mode fiber: can transmit a variety of modes of optical signal fiber, for the G.651 level, according to the optical mode is divided into OM1, OM2, OM3, multi-mode fiber transmission Fast signal transmission distance of 2 km.

The most common cable structure for the layer of twisted fiber optic cable, 12 or more fiber optic cable is generally this structure, the cable cavity can accommodate a number of loose tube, Video Surveillance Cameras loose tube as the basic unit, each loose tube can accommodate 6-12 Core core; layer twisted cable as the center to strengthen the components, loose tube around the center to strengthen the core,

12-core outdoor fiber optic cable is generally selected structure is the central beam tube, this type of cable built-in contains a center loose tube, which can contain 1-12 core core, Video Surveillance Cameras outer jacket contains two parallel wire

Optical fiber patch panel (box): fiber terminal box is to protect the fiber and pigtail, Video Surveillance Cameras pigtail is to connect fiber optic transceivers, fiber switches or optical transceiver.

Fiber terminal box (splice box or fusible disk): fiber splicing box is the two fibers welded together.

Pigtail: One end of the fiber pigtail fused with the fiber, Video Surveillance Cameras the other end connected to fiber optic transceivers or fiber switches and other equipment.

ODF fiber patch panels and optocouplers: In some large and medium-sized monitoring projects, may use ODF fiber patch panels and optocouplers and other equipment, Video Surveillance Cameras ODF fiber patch panel main applications and the engine room, you can make more fiber more regular , Easy to maintain.

Fiber optic transceivers: also known as photoelectric conversion machine, the optical port, the electrical port to convert the equipment, used in pairs, the electrical connection to the switch, optical port fiber optic pigtail.

Fixed aperture fixed focus lens, that is, Video Surveillance Cameras the lens has only one can manually adjust the focus adjustment ring, left and right rotation of the ring image can be imaged on the CCD target surface the most clear; no aperture adjustment ring, the aperture can not be adjusted into the lens of the luminous flux can not pass Change the lens factors and change, Video Surveillance Cameras only by changing the light intensity of the field of view to adjust. Simple structure, cheap.

Manual aperture fixed focus lens than the fixed aperture fixed focus lens to increase the aperture adjustment ring, aperture range generally from F1.2 or F1.4 to the whole closed, can easily adapt to the scene was photographed light, Video Surveillance Cameras aperture adjustment is done manually of. Light intensity is relatively uniform, the price is cheaper.

Shenzhen Youguan CCTV Technology Co.,Ltd