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Chapter 9 Warranty and Specifications
20. Polarization—The DIRECTV Digital Satellite Recorder is equipped with a plug that will fit into thepower outlet only one way.Do not modify the
plug. If the plug does not fit, contact your electrician to replace your out let. To prevent electric shock, do not use this plug with an extension cord or
outletunless you can fully insert the blades without blade exposure.
21. SatelliteDish Antenna Grounding—The outdoor satellite dish antenna and the cable which connects the satellite dish antenna to the recorder must
complywith local installation codes and the appropriate sections of the National Electric Code (NEC). In particular they must comply with Article 810-
15, which covers proper installation and grounding of television receiving equi pment. They must also comply with Article 820-33, which specifies that
the satellitedish antenna cable ground shall be connected to the grounding system of the building as close to the point of cable entry as is practical.
Thesecodes require proper grounding of the metal structure of the outdoor satellite dish antenna and groundingof the connecting cable at a point where
it enters the house(or other building). If a professional installs the Satellite Dish Antenna, be sure that the installer observes installationc odes.If
additionallocal installation codes apply, contact local inspection authorities. It is important to comply with these codes forproper operation of the
recorder.
Example of Proper Antenna Grounding
Note: If the Satellite/Antennacable is grounded correctly (as specified above), connecting it to the DIRECTVDigital Satellite Recorder will properly
ground the recorder. The recorder must be properly grounded b efore you connect it to a telephone line, and it must remain grounded the reafter.
Ground clamp
Electric service
equipment
Ground clamps Power service grounding electrode
(NEC Art. 250 Part H)
Grounding conductors
Coaxial cable
Grounding block
Coaxial cable