Raisecom RCMS2504-240 User Manual download pdf (Page 20)

Raisecom Technology Co., Ltd

7. Appendix Introduction of Cable Making

A.1 E1 interface

z 75ohm adopting DB37 coax adapter:

Suggest using SYV 75-2-2 coax cable, the distance less than 200 meter.

z 120ohm DB37 male connector is defined as following:

DB37 pin

definition

OUT 3、4 7、8 11、12 15、16

IN 21、22 25、26 29、30 33、34

Others hang up. Twisted pairs can be jointing on DB37 female connector.

A.2 Cable of Ethernet

Use RJ45 Cat. 5 twisted-pair cable to connect the equipment. The cable shall not be longer

than 100 meters.

Both straight-through and crossover cables will work.

RJ45 line order as following:

number

1 2 3 4 5 6 7 8

Definition TX+ TX- RX+

Not Used Not Used

RX-

Not Used

A.3 RS232 cable of data channel

Adopting RJ45 connector, definition of pins as following:

3 ——RXD 232 signal input

6 ——TXD 232 signal output

4, 5 ——GND

others —— hang up (unassigned)

RS232 (RJ45) connection to console of computer (DB9 female connector) line order:

RJ45 DB9F

3 ←— 3

Pin 1 Pin 8

1 2 ... 15 16 17 18 19 20 21 22

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Raisecom RCMS2504-240 User Manual Page 20