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Fibre optic brochure.pdf

Fibre optic brochure.pdf

Product catalog summary

Introduction to Fibre Optic Communications
Fibre optics are thin strands of pure glass used for data transmission, offering advantages over copper wire such as higher data rates, larger bandwidth, longer transmission distances, and immunity to electromagnetic interference (EMI). They are ideal for harsh industrial environments.

Types of Fibre Optic Cables

Plastic Fibres: Large core, short distances (20-50 meters).
Multimode Fibres: Medium core, distances up to 5 km, used for medium distances.
Singlemode Fibres: Small core, distances up to 80 km, used for long distances.

Fibre Optic Cable Construction
Fibre optic cables consist of a glass core surrounded by cladding, with protective layers like buffer tubes. They are available in internal and external grades, designed for flexibility, fire protection, and resistance to environmental factors.

Transceivers and Connectors
Fibre optic transceivers include both a transmitter and receiver, allowing independent operation. Common connectors include LC and ST types, with termination methods like crimp and cleave or epoxy bonding.

Attenuation and Wavelength
Attenuation varies with wavelength, material, and purity, measured in dB/km. Typical wavelengths are 650 nm for plastic, 820-1300 nm for multimode, and 1300-1550 nm for singlemode cables.

Light Loss in Splices and Connectors
Loss is minimized with identical, aligned fibre cores and clean connectors. Typical losses are 0.2 dB for mechanical splices and 0.1 dB for fusion splices.

Transmission Distance Calculation
Transmission range depends on output power, receiver sensitivity, and losses. A fibre budget calculation helps determine the feasible distance for a given setup.

ODW-Series Fibre Optic Modems
The ODW-series modems are designed for harsh environments, offering high data rates, long distances, and features like bi-directional transceivers and redundant power supply. They support applications like PROFIBUS DP networks with automatic data rate detection and re-timing functions.

Overview: The document provides technical specifications and application details for the ODW series of fibre optic communication devices designed for industrial environments. These devices support various data rates and are suitable for harsh conditions, offering features like redundant power supply inputs and fault indication interfaces.

ODW-621: Designed for point-to-point applications with RS-232 interfaces, the ODW-621 supports fibre distances up to 80 km using singlemode fibre. It includes a re-timing function to eliminate jitter and can be used with the ODW-631 for protocol conversion to RS-422/485.

ODW-622: Suitable for redundant ring or multidrop applications with RS-232 interfaces, the ODW-622 supports fibre distances up to 80 km per leg, allowing for extensive network coverage. It features LED fault indication and relay contacts for network diagnostics.

ODW-631: This device is intended for point-to-point connections between RS-422/485 networks. It supports fibre distances up to 80 km and includes a re-timing function. It can be used with the ODW-621 for protocol conversion.

ODW-632: Designed for redundant ring or multidrop solutions with RS-422/485 interfaces, the ODW-632 supports extensive network coverage with fibre distances up to 80 km per leg. It includes fault indication features and can be integrated with RS-232 devices using the ODW-622.

Technical Data: The ODW series operates on a rated voltage of 12 to 48 VDC and supports a wide operating temperature range of -40 to +70°C. The devices are designed to meet industrial EMC specifications and offer various connection options, including detachable screw terminals and 9-pin D-sub connectors.

Environmental and Compliance: The devices comply with various electromagnetic compatibility standards, including EN 61000-4-2 for ESD and EN 61000-4-3 for RF field immunity. They are designed to operate in temperatures ranging from -40 to +70°C and can withstand vibrations and shocks as per IEC standards.

Optical Specifications: The document details the optical power budgets for different fibre types and transceiver configurations, highlighting the maximum supported link lengths and the importance of attenuation for short fibre lengths.

Fibre optic brochure.pdf

Fibre optic brochure.pdf

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