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