proper electrical grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna-discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

Lightning Protection

For added protection of any Hewlett-Packard product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug the product from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product from lightning and power line surges.

1

Antenna Grounding

7

6

5

4

3

2

Antenna Grounding

Reference

Grounding Component

1Electric Service Equipment

2

Power Service Grounding Electrode System

(NEC Art 250, Part H)

 

3Ground Clamps

4Grounding Conductors (NEC Section 810-21)

5Antenna Discharge Unit (NEC Section 810-20)

6Ground Clamp

7Antenna Lead in Wire

Power Lines

An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits.

Warning: When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them could be fatal.

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HP 522a (AP), 743a (AP), 503a (AP), 513a (AP) manual Lightning Protection, Power Lines

503a (AP), 513a (AP), 522a (AP), 743a (AP) specifications

The HP 703k (AP), 503k (AP), 743a (AP), 753k (AP), and 753d (AP) are some of the notable printers developed by HP, targeting various user needs, from home offices to larger professional environments.

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The HP 503k (AP) is a compact monochrome printer that excels in producing sharp text documents at fast speeds. Its technology focuses on laser printing capabilities, ensuring high-output quality for business needs. The 503k features a user-friendly control panel, making it easy to manage printing tasks. Moreover, it's compatible with various paper sizes, accommodating a wide range of printing requirements.

Moving on to the HP 743a (AP), this model targets professionals requiring color printing with exceptional quality. Its vibrant color output is attributed to HP’s ColorSphere toner technology, which produces brighter and sharper images. The 743a includes high-capacity toner cartridges, enabling longer print runs and reducing overall printing costs. This printer supports advanced security features, ensuring sensitive documents are processed safely.

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In summary, the HP 703k, 503k, 743a, 753k, and 753d (AP) models collectively offer a variety of features, technologies, and characteristics that cater to diverse printing needs, ensuring users can find the right solution for their specific requirements.