standards and guidelines for communication sites - Radio And ...

STANDARDS AND GUIDELINES FOR COMMUNICATION SITES ELECTROSTATIC DISCHARGE CONSIDERATIONS
• Labeling shall be imprinted on white opaque material (preferably plastic or plasticized paper) using
indelible black ink.
• Label placement shall be between 101 to 152 mm (4 to 6 in.) from each end of the cable (or the
most logical point that would allow the label to be easily read).
• Labeling should wrap entirely around the cable. It should be secure enough to assure label retention
if cable is to be pulled through conduit.
• Information printed on each label should be brief but clearly understandable. Use industry-standard
abbreviations and acronyms to conserve label space.
FIGURE 9-19 EXAMPLE OF CABLE LABELING
9.10 ELECTROSTATIC DISCHARGE CONSIDERATIONS
Installation and repair of certain equipment will require removal and replacement of Field Replaceable
Units (FRUs) within the equipment for purposes of setting configurations or installing FRUs specific to
site applications. Whenever equipment must be opened, electrostatic discharge (ESD) precautions shall
be adhered to. In general, the following requirements shall be met:
• An ESD-protected work area shall be present.
• An ESD wriststrap shall be worn when handling ESD-sensitive modules.
• ESD-protected packaging shall be available for containing modules removed from equipment.
All precautions specifically stated for the equipment being worked on shall be adhered to in accordance
with the respective documentation for the equipment.
It is recommended that replacement FRUs be stored in their anti-static packaging, in an anti-static
cabinet or enclosure to ensure that they are protected from ESD until they are needed for equipment
repair.
See Appendix B for general ESD information.
68P81089E50-B 9/1/05 9-31