
H3C AR 46 Series Routers Installation Manual
Chapter 3 Installing the Router
3-4
3.3.2 Mounting the Router on a Tabletop
When mounting the router on a tabletop, ensure that the surface is clean and you have
considered the following:
z
The table is sturdy and well grounded.
z
10 cm (3.9 in.) of clearance is available around the sides of the chassis for heat
dissipation.
z
Do not place any heavy object on the chassis.
3.4 Installing the Generic Modules
Installing generic modules includes installing the main control board, PSUs, the fan
module, and FICs.
For more information about FICs and their installation, refer to
Low-End and Mid-Range
Series Routers Interface Card and Interface Module Manual
.
3.5 Connecting the PGND
Warning:
The normal connection of the protection ground (PGND) on the router chassis is an
essential safeguard against the lightning shocks and interference. You must correctly
connect the PGND when installing or using the router.
As shown in the following figure, the router provides a protection ground (PGND) screw
at the top right-rear of the chassis. You must securely connect it to the earth ground to
safely channel faradic current and leakage electricity to the ground and have the device
less susceptible to electromagnetic interference (EMI). The PGND also protects the
system against high voltage of lightning shocks caused by external network lines like
E1/T1 and ISDN/PSTN lines.
(1)
1) Grounding screw
Figure 3-4
PGND screw on the chassis