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Precautions 
This document provides a reference guide for hardware installation. 
This document does not describe assembly of equipment prior to delivery; it only describes 
procedures for onsite installation. 
Electrostatic discharge 
To prevent damage to sensitive components caused by electrostatic discharge, always wear ESD 
gloves or an ESD wrist strap when handling the equipment, boards, or IC chips. Ensure that the ESD 
wrist strap is properly grounded. 
Binding cables 
Bind fibers or cables inside a cabinet at intervals of not more than 250 mm and user cables at intervals of 
not more than 200 mm. 
Bind fibers, cables, or corrugated pipes outside a cabinet at intervals equal to the distance between two 
horizontal beams. If the cable trough has no beams, the intervals should not exceed 250 mm. 
Pre-installation check 
Check the equipment room, cabinet, power supply, ground cables, optical cables, and surrounding 
facilities prior to installation. Be sure that all engineering prerequisites have been met and use 
procedures specified in the engineering design documents to complete the installation. 
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