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).

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Document last modified: 2002-01-13