Multi-tech-systems MT56DSU-S Manuale Utente Scaricare il pdf (Pagina 33)

Appendix

DB25S Connector with V.35 Interface

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-3. Connector

DESCRIPTION

The DB25 connector also ties the MT56DSU-S to a DTE with a V.35 interface. When a V.35 interface device

is connected to a MT56DSU-S, the internal shunt has to be moved to the V.35 position. The V.35 interface for

the DB25 connector has the following pinout configuration.

PIN IDENTIFICATION

Pin Description

1 Chassis Ground

7 Signal Ground

4 Request To Send

5 Clear To Send

6 Data Set Ready

8 Carrier Detect

20 Data Terminal Ready

2 Transmit Data (A)

12 Transmit Data (B)

3 Receive Data (A)

22 Receive Data (B)

15 Transmit Clock (A)

21 Transmit Clock (B)

17 Receive Clock (A)

18 Receive Clock (B)

1 2 ... 28 29 30 31 32 33 34 35 36 37 38

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Multi-tech-systems MT56DSU-S Manuale Utente Pagina 33