9针串行口到25针转换器

9 针串行口到 25 针转换器

本转换口把一个 25 针的串行设备接到 9 针的串行口上，PC 一侧为 9 针母插头：

9 PIN D-SUB FEMALE
到串行设备一侧为 25 针公插头：
25 PIN D-SUB MALE

引脚定义

　

9-Pin

25-Pin

Carrier Detect

1

8

Receive Data

2

3

Transmit Data

3

2

Data Terminal Ready

4

20

System Ground

5

7

Data Set Ready

6

6

Request to Send

7

4

Clear to Send

8

5

Ring Indicator

9

22

	9-Pin	25-Pin
Carrier Detect	1	8
Receive Data	2	3
Transmit Data	3	2
Data Terminal Ready	4	20
System Ground	5	7
Data Set Ready	6	6
Request to Send	7	4
Clear to Send	8	5
Ring Indicator	9	22

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