Antenna, Navigation: Description and Operation

Media Orientated System Transport(MOST)
1. The outline
A. MOST(Media Orientated System Transport) is the agreement or high LAN system to operate and connect multimedia unit distance of light foundation with 1 POF.
B. Optical Fiber Communication is the communication process that transmit the information through Optical Fiber Cable in a different way with wire communication using metal center wire wireless communication using frequency.
C. POF(Plastic Optical Fiber) : It is used in vehicles with plastic fiber cable using plastic with core and clading materials.
D. System outline
1) Structure : ring type
2) Transmision speed : 24.8Mbps
3) Interface : standardization in MOST organization(Germany)
4) Application : digital audio, navigation
2. Characteristic
A. Simple structure of ring type : It is easy to design and keep up and it has excellent module extension.
B. Optical area LAN system construction : possibility of mass storage high speed transmision.
C. No barrier by noise : quantity upgrade for multimedia working.
D. Reduction of circuit quantity and weight and connector quantity compared with wire : It is higher in assembly and maintenance relationed with working ability and fuel efficiency,
E. Possibility of multi functional data transmision : digital audio, video, control sign and so on.
3. Organization of Optical Fiber Communication





4. Optical communication organization chart




5. Structure and Characteristic of POF




A. Cable = fiber + outer jacket + inner jacket
B. Fiber = core + clading
C. Core = core to transfer light with PMMA(Poly methyl methacrylate)(light transit layer)
D. Clad : differ refraction rate to be whole total reflection of light and layer next to core with (F-PMMA : Fluorine Poly Methyl Methacrylate)(break layer)
E. Jacket : prevention and handle of optical fiber to prevent damage and wear and moisture with Polyamide. (coating layer)
6. Characteristic of POF
A. Refraction rate of Clad is lower than core, so the light transferred from one end side of optical fiber causes total reflection in core and contact surface of clad and moves to end side of optical fiber.
B. Light transmit efficiency rate of POF is much higher because cross section that light is processing possesses 98% of whole optical fiber.
7. Main connector shape




8. Direction and caution in handling optical cable(general subject reference)
9. Method in optical cable's keeping for long(general subject reference)
10. Method in removal of grind surface dust of optical cable(general subject reference)
11. Method in optical cable connector replace(general subject reference)
12. Method in optical cable ass'y(general subject reference)

Detachment
* Direction and caution in handling optical cable
1) A/V, navi system detachment/caution of optical cable not to be bended or twisted.
2) Temperature control not to be against permissible temperature in a works or storage.(-40°C ~ 85°C)
3) Attachment of dust cap for the dust not to be input in connector and each unit in case of detachment of optical cable.
4) No hand or dust contact in end side surface of Ferrule of optical cable.
5) No throwing or steping on floor.
6) No optical twisting.