Figure 4-5 Install the router in a rack
When installing an A6616 in a rack, you are recommended to install it on a support tray. If you
intend to install it on slide rails, make sure that the slide rails can bear the weight of the router.
PGND Cable Connection
Importance of the PGND Cable
The correct connection of the protection ground (PGND) cable on the router chassis is an
essential safeguard against the lightning strokes and electromagnetic interference (EMI). You
need to correctly connect the PGND cable when installing or using the router.
The power input end of the router is equipped with a noise filter. The neutral ground of the
power input end is directly connected to the chassis and is called PGND (also known as chassis
ground). You need to securely connect the PGND cable to the earth ground to safely lead
induced current and leakage current to the ground and reduce the electromagnetic susceptibility
(EMS) of the router. The PGND cable can also protect the router against high lightning voltage
resulting from external network lines such as E1 line.
Connecting the PGND Cable
The grounding screw of the router is located on the lower right corner of the rear chassis panel
and is marked with a grounding sign, as shown in Figure 4-6.
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