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6/4/99 13:20 General E-1

Appendix E

Connection to RS-422

E.1 General

Table E-1 provides detailed information for connecting an ASM-20 (EIA 530)

to a RS-422 (V.36) DTE.

Table E-1 Interface List for Connecting ASM-20 (RS- 530) to RS-422 (V.36) DTE

Signal Function RS-449 (RS-422/423) EIA 530

37 Pins DB-25 Female Standalone

and Frame

Pin Circuit Pin Circuit

Protective Ground 1 Shield 1

Signal Ground 19 SG 7 AB

DTE Common Return 37 SC

DCE Common Return 20 RC

Transmitted Data 4 SD (A)

22 SD (B)

2 BA (A)

14 BA (B)

Received Data 6 RD (A)

24 RD (B)

3 BB (A)

16 BB (B)

Request to Send 7 RS (A)

25 RS (B)

4 CA (A)

19 CA (B)

Clear to Send 9 CS (A)

27 CS (B)

5 CB (A)

13 CB (B)

Data Set Ready 11 DM (A)

29 DM (B)

6 CC (A)

22 CC (B)

Data Terminal Ready 12 TR (A)

30 TR (B)

20 CD (A)

23 CD (A)

Carrier Detect 13 RR (A)

31 RR (B)

8 CF (A)

10 CF (B)

External Transmit Clock 17 TT (A)

35 TT (B)

24 DA (A)

11 DA (B)

Transmit Clock 5 ST (A)

23 ST (B)

15 DB (A)

12 DB (B)

1 2 ... 61 62 63 64 65 66 67 68 69 70 71

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