# EIA530 (RS530)

(at the DTE)
(at the DCE)

CORRECT?

25 PIN D-SUB MALE at the DTE (Computer).
25 PIN D-SUB FEMALE at the DCE (Modem).

Pin | Name | Dir | Description | Circuit | Paired with
--- | --- | --- | --- | --- | ---
1 |  |  | Shield |  | 18
2 | TxD |  | Transmitted Data | BA | 14
3 | RxD |  | Received Data | BB | 16
4 | RTS |  | Request To Send | CA | 19
5 | CTS |  | Clear To Send | CB | 13
6 | DSR |  | Data Set Ready | CC | 22
7 | SGND |  | Signal Ground | Ground | 21
8 | DCD |  | Data Carrier Detect | CF | 10
9 |  |  | Rtrn Receive Sig. Elmnt Timing | DD | 17
10 |  |  | Rtrn DCD | CF | 8
11 |  |  | Rtrn Transmit Sig. Elmnt Timing | DA | 24
12 |  |  | Rtrn Transmit Sig. Elmnt Timing | DB | 15
13 |  |  | Rtrn CTS | CB | 5
14 |  |  | Rtrn TxD | BA | 2
15 |  |  | Transmit Signal Element Timing | DB | 12
16 |  |  | Rtrn RxD | BB | 3
17 |  |  | Receive Signal Element Timing | DD | 9
18 | LL |  | Local Loopback | LL | 1
19 |  |  | Rtrn RTS | CA | 4
20 | DTR |  | Data Terminal Ready | CD | 23
21 | RL |  | Remote Loopback | RL | 7
22 |  |  | Rtrn DSR | CC | 6
23 |  |  | Rtrn DTR | CD | 20
24 |  |  | Transmit Signal Element timing | DA | 11
25 |  |  | Test Mode | TM |

Note: Direction is DTE (Computer) relative DCE (Modem).

Contributor: Joakim Ögren, Greg A. Woods

Source:
RS530 Page at Connectivity Knowledge Platform (Made IT)

Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07