Pin Assignments

Table D-5. RS-449 Cable Interface

Signal

Circuit Mnemonic

CCITT Number

Direction

Pin

Shield

1

 

 

 

 

 

Signal Ground

SG

102A

19

 

 

 

 

 

Receive Ground

RC

102B

20

 

 

 

 

 

Send Common

SC

37

 

 

 

 

 

Send Data

SD

103

To DSU/CSU

4 (A)

 

 

 

 

22 (B)

 

 

 

 

 

Receive Data

RD

104

From DSU/CSU

6 (A)

 

 

 

 

24 (B)

 

 

 

 

 

Request-to-Send

RS

105

To DSU/CSU

7 (A)

 

 

 

 

25 (B)

 

 

 

 

 

Clear-to-Send

CS

106

From DSU/CSU

9 (A)

 

 

 

 

27 (B)

 

 

 

 

 

Receiver Ready

RR

109

From DSU/CSU

13 (A)

 

 

 

 

31 (B)

 

 

 

 

 

Data Mode

DM

107

From DSU/CSU

11 (A)

 

 

 

 

29 (B)

 

 

 

 

 

Terminal Ready

TR

108/1, /2

To DSU/CSU

12 (A)

 

 

 

 

30 (B)

 

 

 

 

 

Terminal Timing

TT

113

To DSU/CSU

17 (A)

 

 

 

 

35 (B)

 

 

 

 

 

Send Timing

ST

114

From DSU/CSU

5 (A)

 

 

 

 

23 (B)

 

 

 

 

 

Receive Timing

RT

115

From DSU/CSU

8 (A)

 

 

 

 

26 (B)

 

 

 

 

 

Local Loopback

LL

141

To DSU/CSU

10

 

 

 

 

 

Remote Loopback

RL

140

To DSU/CSU

14

 

 

 

 

 

Test Mode

TM

142

From DSU/CSU

18

 

 

 

 

 

D-10

August 2000

3162-A2-GB20-40

Page 150
Image 150
HP 3162 manual Pin Assignments