Information technology. Galvanic isolation of balanced interchange circuitsWhat is ISO IEC 9549 Galvanic isolation of balanced interchange circuits about? ISO IEC 9549 specifies galvanic isolation of balanced interchange circuits using optocoupler integrated circuit technology and is provided for data transmission in the two condition code (e. g., NRZ). The electrical characteristics are compatible with both ISO 8482 and CCITT Recommendation V. 11. Note: ISO IEC 9549 does not describe a complete equipment interface in terms

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By using BS EN 4835

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in response to a request from the Society of Motor Manufacturers and Traders