H3C Technologies H3C MSR 50 - Manual (Page 284)

4-89
E1 cable, coaxial connector, network connector, and 75-ohm-to-120-ohm adapter are all optional
accessories. Order them together with FIC-1VE1. By default, they are not provided.
DIP switch
FIC-1VE1 interface matches different types of impedance through an 8BIT DIP switch. By default, all
the 8 positions of the DIP switch are ON, as shown in the following figure:
Figure 4-114 Default setting of the DIP switches
on
1
2
3
4
5
6
7
8
8BIT description and settings of DIP switch are given in the following table:
Table 4-72 Description and settings of the internal DIP switch of FIC-1VE1
DIP switch Description 75-ohm impedance 120-ohm impedance
1BIT ON OFF
2BIT ON OFF
3BIT ON OFF
4BIT ON OFF
5BIT
Switch for
75-ohm/120-ohm options
ON OFF
6BIT
Switch for RxRing
grounding mode options
z
OFF: RxRing
grounding via
capacitor
z
ON: RxRing directly
grounding
—
7BIT
Switch for RxShield
grounding options
—
z
ON: RxShield
grounding
z
OFF: RxShield
ungrounding
8BIT
Switch for RxShield
grounding options
—
z
OFF: RxShield
grounding via
capacitor
z
ON: RxShield directly
grounding