Connector - Serial (PC 25)

25 PIN D-SUB MALE at the computer.

(at the computer)

Pin	Name	Direction	Description
1	SHIELD	---	Shield Ground
2	TXD	Output	Transmit Data
3	RXD	Input	Receive Data
4	RTS	Output	Request to Send
5	CTS	Input	Clear to Send
6	DSR	Input	Data Set Ready
7	GND	---	System Ground
8	CD	Input	Carrier Detect
9	n/c	---
10	n/c	---
11	n/c	---
12	n/c	---
13	n/c	---
14	n/c	---
15	n/c	---
16	n/c	---
17	n/c	---
18	n/c	---
19	n/c	---
20	DTR	Output	Data Terminal Ready
21	n/c	---
22	RI	Input	Ring Indicator
23	n/c	---
24	n/c	---
25	n/c	---

Note: Direction is DTE (Computer) relative DCE (Modem).
Note: Do not connect SHIELD(1) to GND(7).

Source: HW-Book 2001-06-08
Last modified: 2007-06-27 16:22:58.0
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