eia-449 standard corporate institute of science & technology, bhopal department of electronics...
TRANSCRIPT
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EIA-449 Standard
CORPORATE INSTITUTE OF SCIENCE & TECHNOLOGY, BHOPAL
Department of Electronics and Communication Engg.
By- Vineeta Shakya
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• Introduced in 1970 by EIA to overcome limitation of RS-232
• Increase Bandwidth
• Increase Distance
EIA 449 Standard
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Mechanical Specification
It has two connector
• 9 Pin connector
• 37 Pin Connector
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9 Pin Connector
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Function of each Pin
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37 Pin Connector
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Pin function
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Category I Pins
• Category - I Pins has those pins whose functions are compatible with those of EIA-232.
• For each Category - I Pin EIA -449 defines two pins one in the first column and one in second colemn
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Category-II Pins
Category – II Pins are those that have no equivalent in EIA – 232 or have been redefined.
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Functions Of Category- II Pins
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Electrical Specifications
EIA-449 uses two standard to defines its electrical specifications
• RS- 423 (for Unbalanced Circuit)
•RS- 422 (for Balanced Circuit)
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RS-423 Standard
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RS-423 Standard
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Wave forms for RS-422
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BNC Connector
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BNC Connector
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RJ-11 connector
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Pin function
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RJ-45 Connector