Unit installation

Appendix A Pinouts Installation and Operation Manual

A-10 Data Channel Connector FCD-E1

Table A-8. Wiring of X.21 Adapter Cable for DCE Mode (Cont.)

FCD-E1 Side Designation Function User’s Side

16 RDB Receive Data (wire B) 11

17 RCA Receive Clock (wire A) –

18 – Not connected –

19 RTSB RTS (wire B) 10

20 RCEA External Receive Clock (wire

–

21 – Not connected –

22 DSRB DSR (wire B) –

23 RCEB External Receive Clock (wire B) –

24 SCEA External Send Clock (wire A) –

25 – Not connected –

V.36/RS-449 Data Channel

The following sections provide information on the cables required to connect

user’s equipment to the V.36/RS-449 channel in the various timing modes.

DCE Mode

This mode is used to connect to user’s equipment with V.36/RS-449 DTE

interface. The V.36/RS-449 cable coming from the user’s equipment is connected

to the FCD-E1 CHANNEL connector through an adapter cable. The adapter cable

(see Figure A-4) is terminated in a 25-pin male D-type connector at the

FCD-E1 side, and a 37-pin female connector at the user’s side. A suitable cable,

designated CBL-HS2/R/1, is available from RAD.

Cable wiring is given in Table A-9.

Figure A-4. V.36/RS-449 Adapter Cable for DCE Mode