Lenovo M5800 Lenovo M4350/M5800 - H61 Safety, Warranty, and Setup Guide - Page 14

Products with television tuner options installed The notice below applies to products containing television (TV) tuner devices that connect to external antennas or to cable/CATV systems, or both, and that are intended to be installed in North America. Users and installers in other countries should follow local codes and ordinances when installing appliances that connect to external antennas and cable/CATV systems. If local codes are not applicable, it is recommended that users/installers follow guidelines similar to those that follow. Note to CATV system installer This reminder is provided to call the CATV system installer's attention to Article 820-40 of the National Electrical Code (NEC) that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close as possible to the point of cable entry as practical. Example of antenna grounding Figure 3. Proper grounding for the cable Ground clamp Antenna lead-in wire Antenna discharge unit (NEC Section 810-20) Grounding conductors (NEC Section 810-21) Power service grounding electrode system (NEC Article 250, Part H) Ground clamps Electronic service equipment Safety, Warranty, and Setup Guide 13