Installing Generic Modules - HP A6602 Installation Manual

Step4 Fix the router in the rack horizontally and firmly by fastening the mounting-
brackets onto the rack posts with pan-head screws. The size of pan-head screws should
satisfy the installation requirements (maximally M6) and the surface of the screws should
be anti-rust.
Figure 3-6 Fix the front mounting-brackets

Installing Generic Modules

Generic modules include memory module, CF card, HIM, and MIM. For their installation
procedures, refer to Chapter 6 "Maintaining Hardware".
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 EMI. You need to correctly connect the
PGND cable when installing or using the router.
The AC power input end of the A6602 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 EMS of the router. The
PGND cable can also protect the router against high lightning voltage resulting from external
network lines such as E1/T1.