Appendix

DB25S Connector

13

12

11

10

9

8

7

6

5

4

3

2

1

25 24 23 22 21 20 19 18 17 16 15 14

Figure B-2. Connector

DESCRIPTION

This connector ties the MT56DSU-S to the DTE. The DB25S connector has the following pinout configuration.

PIN IDENTIFICATION

Pin

Description

Signal

1

Chassis Ground

 

2

Transmit Data

SD

3

Received Data

RD

4

Request To Send

RTS

5

Clear To Send

CTS

6

Data Set Ready

DSR

7

Signal Ground

SG

8

Carrier Detect

CD

15

Transmit Clock

TC

17

Receive Clock

RC

20

Data Terminal Ready

DTR

32

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Multi-Tech Systems MT56DSU-S manual DB25S Connector, Pin Description Signal