Power Socket; Optical Port; E1 Interface; Dip-Switch On The Bottom Panel - Raisecom RC801 User Manual

4.2.2. Power Socket

AC: 220V standard triple-phase power socket
DC: -48V power interface. Left pin for -48V, right pin for 0, and the middle pin for ground

4.2.3. Optical Port

•
The fiber connector is DSC/PC for dual-strand models, TX for signal output and RX for
signal input
•
The fiber connector is SC/PC for single strand models.

4.2.4. E1 Interface

There are 4 groups of E1 interface. Each provides 2 BNC coaxial ports and 1 RJ45 port.
Refer to Appendix A for cable making.
•
BNC for 75 Ohm unbalanced signal. OUT for output and IN for input
•
RJ45 for 120 Ohm balanced signal.

4.3. DIP-switch on the Bottom Panel

The DIP-switch can be set by small flat screw-driver.
Each group of dip-switch corresponds to one E1 interface.
Definition as shown below
st nd
1 2
ON ON
75Ω unbalanced signal effective
As shown in figure above, the default status is set as "75Ω unbalanced signal BNC
interface effective".
It is suggested that users should use BNC connector for 75 Ohm unbalanced signal and
RJ45 connector for 120 Ohm balanced signal.
rd th
3 4
ON OFF
st
1 2
Or OFF OFF
120Ω balanced signal effective
9
Raisecom Technology Co., Ltd
ON
OFF 1 2 3 4
nd rd
3
OFF
th
4
ON