Raisecom Technology Co., Ltd
10
•
RC800-240B basic capacity configuration (4 E1)
Both Slot 1 and 2 are empty. There is no interface for the 5
th
– 8
th
E1 channels.
•
RC800-240B max capacity configuration (8 E1)
SUBM-4E1 sub-module is installed into Slot 1. It provides a DB37 male connector for the 5
th
– 8
th
E1 channels. It can be connected with an adapter as the 1
st
– 4
th
channels. Slot 2 must
be empty.
•
RC800-240B
expanded configuration
When Slot 1 is installed with a 1 E1 interface sub-module (e.g. Ethernet to 1 E1 converter
sub-module, V.35 to E1 converter sub-module), it is actually the 5
th
E1 channel that be
occupied. If installing a two-channel sub-module, it is actually the 5
th
and 6
th
channels that
be occupied.
When Slot 2 is installed with a 1 E1 interface sub-module, it is actually the 8
th
E1 channel
that be occupied. If installing a two-channel sub-module, it is actually the 7
th
and 8
th
channels that be occupied. Slot 2 does not support 4-channel sub-modules.
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
1
st
2
nd
3
rd
4
th
1
st
2
nd
3
rd
4
th
ON
ON
ON
OFF
Or OFF
OFF
OFF
ON
75
Ω
unbalanced signal effective
120
Ω
balanced signal effective
As shown in figure above, the default status is set as “75
Ω
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.
1 2 3 4
ON
OFF