Finalized in 1987 (revision A finalized in 1992[1]), the specification defines the cable between the DTE and DCE devices. It is to be used in conjunction with EIA-422 and EIA-423, which define the electrical signaling characteristics. Because TIA-530 calls for the more common 25 pin connector, it displaced the similar EIA-449, which also uses EIA-422/423, but a larger 37-pin connector.
Two types of interchange circuits ("signals" or "leads") between the DCE and DTE are defined in TIA-530: Category I, which uses the balanced characteristics of EIA-422, and Category II, which is the unbalanced EIA-423. Most of the interchange circuits are Category I, with the exception of Local Loopback (pin 18), Remote Loopback (pin 21), and Test Mode (pin 25) being Category II.
TIA-530 originally used Category I circuits for what is commonly called "Data Set Ready" (DCE Ready, pins 6 and 22) and "Data Terminal Ready" (DTE Ready, pins 20 and 23). Revision A [2] changed these interchange circuits to Category II (para 4.3.6 and 4.3.7 of the standard[3]) and added a "Ring Indicator" on pin 22. Pin 23 is grounded in TIA-530-A.
Confusion between the revisions has led to many incorrect wiring diagrams of this interface and most manufacturers still adhere to the original TIA-530 standard. Care should be taken to ensure devices are of the same standard before connecting to avoid complications.
Make note that the diagram shows pin 24 being "B" when it is actually "A".
References
^ANSI/TIA/EIA-530-A. Arlington, VA: Telecommunications Industry Association. 2003.
^ANSI/TIA/EIA-530-A. Arlington, VA: Telecommunications Industry Association. 2003.
^ANSI/TIA/EIA-530-A. Arlington, VA: Telecommunications Industry Association. 2003. p. 20.
January 20, 2023
currently, known, often, called, balanced, serial, interface, standard, that, generally, uses, connector, originally, created, telecommunications, industry, association, pinout, using, male, finalized, 1987, revision, finalized, 1992, specification, defines, c. Currently known as TIA 530 A but often called EIA 530 or RS 530 is a balanced serial interface standard that generally uses a 25 pin connector originally created by the Telecommunications Industry Association Pinout RS 530 DTE using male DB 25 Finalized in 1987 revision A finalized in 1992 1 the specification defines the cable between the DTE and DCE devices It is to be used in conjunction with EIA 422 and EIA 423 which define the electrical signaling characteristics Because TIA 530 calls for the more common 25 pin connector it displaced the similar EIA 449 which also uses EIA 422 423 but a larger 37 pin connector Two types of interchange circuits signals or leads between the DCE and DTE are defined in TIA 530 Category I which uses the balanced characteristics of EIA 422 and Category II which is the unbalanced EIA 423 Most of the interchange circuits are Category I with the exception of Local Loopback pin 18 Remote Loopback pin 21 and Test Mode pin 25 being Category II TIA 530 originally used Category I circuits for what is commonly called Data Set Ready DCE Ready pins 6 and 22 and Data Terminal Ready DTE Ready pins 20 and 23 Revision A 2 changed these interchange circuits to Category II para 4 3 6 and 4 3 7 of the standard 3 and added a Ring Indicator on pin 22 Pin 23 is grounded in TIA 530 A Confusion between the revisions has led to many incorrect wiring diagrams of this interface and most manufacturers still adhere to the original TIA 530 standard Care should be taken to ensure devices are of the same standard before connecting to avoid complications Make note that the diagram shows pin 24 being B when it is actually A References Edit ANSI TIA EIA 530 A Arlington VA Telecommunications Industry Association 2003 ANSI TIA EIA 530 A Arlington VA Telecommunications Industry Association 2003 ANSI TIA EIA 530 A Arlington VA Telecommunications Industry Association 2003 p 20 Retrieved from https en wikipedia org w index php title EIA 530 amp oldid 1131791993, wikipedia, wiki, book, books, library,
