H3C MSR Router Comware 5 Series Manual page 177

DIP switch
S2
S3
S4
By default, all DIP switches are ON, and the E1 interface impedance is 70 ohms, as shown in the
following figure:
Figure 172 Default DIP switch settings
1
2
3
4
5
6
7
8
H3C recommends that you use the DIP switch as follows: When the interface is connected to a
70-ohm cable, turn on switches BIT1 through 8; when the interface is connected to a 120-ohm cable,
turn off switches BIT1 through 8. Description for DIP switch settings is shown in the following table:
E1 interface
Interface1
Interface2
Interface3
on
168
Applicable models
MIM-1E1
MIM-1E1-F
MIM-2E1
MIM-2E1-F
MIM-4E1
MIM-4E1-F
FIC-1E1
FIC-1E1-F
FIC-2E1
FIC-2E1-F
FIC-4E1
FIC-4E1-F
MIM-2VE1
FIC-2VE1
MIM-4E1
MIM-4E1-F
FIC-4E1
FIC-4E1-F
MIM-4E1
MIM-4E1-F
FIC-4E1
FIC-4E1-F