Interface Leds - H3C MSR 20 Series Manual

Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
DIP switch
8BIT
Caution:
When setting internal DIP switch, you are recommended to: turn ON all BITs from 1
to 8 when a 75-ohm cable is connected. Turn OFF all BITs from 1 to 8 when a
120-ohm cable is connected;
The default configuration of internal DIP switch is that all the 8 positions of the BIT
switch are ON, that is, the E1 interface impedance is 75-ohm.

2.3.4 Interface LEDs

SIC-1EPRI panel is shown in the following figure:
Figure 2-15 SIC-1EPRI panel
SIC-1E1-F panel is shown in the following figure:
Figure 2-16 SIC-1E1-F panel
The status description of the LEDs is given in the following table:
Description
Switch for
RxShield
grounding options
Fractional E1
2-11
Chapter 2 Smart Interface Cards
75-ohm
impedance
OFF: RxShield
grounding via
capacitor
—
ON: RxShield
directly grounding
120-ohm
impedance