User manual

Raisecom Technology Co., Ltd
16
7. Appendix A Introduction of making cable
A.1 E1 interface
z 75ohm adopt DB37 external hanging coaxial adapter:
Suggest using SYV 75-2-2 coaxial cable. The longest distance is less than 200 meters.
Take CC3-K3 plug out fittings and screw off protecting sheath. Split the core and shielded layer of
coaxial cable. Protecting sheath, iron collar and cannulation (Φ3) cover onto cable. Firmly weld
core and CC3-K3. Wrap CC3-K3 plug in protecting sheath of cable. Hold and press iron collar by
press pincher. Wrap CC3-K3 and line in cannulation, which is contracted and fastened by heat.
Fix protecting sheath.
z 120ohm DB37 male connector is defined as following:
DB37 pin
definition
1
st
Branch 2
nd
Branch 3
rd
Branch 4
th
Branch
OUT
3、4 7、8 11、12 15、16
IN
21、22 25、26 29、30 33、34
Other pin: GND
A.2 Cable of Ethernet
Use Cat 5 twisted pair to connect the equipment. Please note the twisted pair is less than 100 meters.
Can choose parallel or cross line.
RJ45 line order is as following:
Pin
number
1 2 3 4 5 6 7 8
Definition TX+ TX- RX+ Not Used Not Used RX- Not Used Not Used
A.3 RS232 cable of data channel
z Auxiliary data channel adopts RJ45 connector whose pins definition are as following:
3 ——RXD 232 signal input
6 ——TXD 232 signal output
4、5——GND
The 1
st
PIN The 8
th
PIN