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NOTE TO CATV SYSTEM INSTALLER:
This reminder is provided to call the CATV (Cable-TV) system installer’s attention to Article
820-40 of the NEC, that provides guidelines for proper grounding and, in particular, specified
that the cable ground shall be connected to the grounding system of the building, as close to
the point of cable entry as practical.
NOTE:
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by tuning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
NOTE:
Changes or modifications may cause this unit to fail to comply with Part 15 of the FCC Rules
and may void the user’s authority to operate the equipment.
IMPORTANT SAFETY INSTRUCTIONS
READ BEFORE OPERATING EQUIPMENT
These products were designed and manufactured to meet strict quality and safety standards. There
are, however, some installation and operation precautions which you should be particularly aware of.
1. Read Instructions—All the safety and operating instructions should be read before the
system is operated.
2. Retain Instructions—The safety and operating instructions should be retained for future reference.
3. Heed Warnings—All warnings on the appliances and in the operating instructions should be adhered to.
4. Follow Instructions—All operating and use instructions should be followed.
5. Cleaning—Unplug the appliances from wall outlets before cleaning. Do not use liquid cleaners or
aerosol cleaners. Use a damp cloth for cleaning.
6. Attachments—Do not use attachments not recommended by the product manufacturer as they
may cause hazards.
7. Water and Moisture—Do not use these appliances near water-for example, near a bath tub, wash
bowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, and the like.
8. Accessories—Do not place these appliances on an unstable cart, stand, tripod, bracket, or table.
The audio/video products may fall, causing serious injury to a child or adult, and serious damage to
the products. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer,
or sold with the appliances. Any mounting of the appliances should follow the manufacturer’s
instructions, and should use mounting accessories recommended by the manufacturer.
9. Ventilation—Slots and openings in the cabinet are provided for ventilation and to ensure reliable
operation of the appliances and to protect them from overheating, and these openings must not be
blocked or covered. The openings should never be blocked by placing the products on a bed, sofa,
rug, or other similar surface. These products should never be placed near or over a radiator or heat
register. These products should not be placed in a built-in installation such as a bookcase or rack
unless proper ventilation is provided or the manufacturer’s instructions have been adhered to.
10. Power Sources—These products should be operated only from the type of power source
indicated on the marking labels. If you are not sure of the type of power supply to your home, consult
your appliance dealer or local power company. For video products intended to operate from battery
power, or other sources, refer to the operating instructions.
11. Grounding or Polarization—These products are equipped with polarized alternating-current line
plugs (plugs having one blade wider than the other). This plug will fit into the power outlet only one
way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the
plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not
defeat the safety purpose of the polarized plug.
12. Power-Cord Protection—Power-supply cords
should be routed so that they are not likely to be
walked on or pinched by items placed upon or
against them, paying particular attention to cords at
plugs, convenience receptacles, and the point where
they exit from the appliances.
13. Outdoor Antenna Grounding—If an outside
antenna or cable system is connected to the
product, be sure the antenna or cable system is
grounded so as to provide some protection against voltage surges and built up static charges.
Section 810 of the National Electrical Code, ANSI/NFPA No. 70-1984, provides information with
respect to proper 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.
14. Lightning—For added protection for these audio/video products during a lightning storm, or
when they are left un-attended and unused for long periods of time, unplug them from the wall outlet
and disconnect the antenna or cable system. This will prevent damage to the products due to
lightning and power-line surges.
15. 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.
When installing an outside antenna system, extreme care should be taken to keep from touching
such power lines or circuits as contact with them might be fatal.
16. Overloading—Do not overload wall outlets and extension cords as this can result in a risk of fire
or electric shock.
17. Object and Liquid Entry—Never push objects of any kind into these products through openings
as they may touch dangerous voltage points or short-out parts that could result in a fire or electric
shock. Never spill liquid of any kind on these audio/video products.
18. Servicing—Do not attempt to service these products yourself as opening or removing
covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified
service personnel.
19. Damage Requiring Service—Unplug these products from wall outlets and refer servicing to
qualified service personnel under the following conditions:
a. When the power-supply cord or plug is damaged.
b. If liquid has been spilled, or objects have fallen into the products
c. If the products have been exposed to rain or water.
d. If the products do not operate normally by following the operating instructions. Adjust only those
controls that are covered by the operating instructions as an improper adjustment of other controls
may result in damage and will often require extensive work by a qualified technician to restore the
product to its normal operation.
e. If the product has been dropped or the cabinet has been damaged.
f. When the product exhibits a distinct change in performance-this indicates a need for service.
20. Replacement Parts—When replacement parts are required, be sure the service technician has
used replacement parts specified by the manufacturer or have the same characteristics as the
original part. Unauthorized substitutions may result in fire, electric shock or other hazards.
21. Safety Check—Upon completion of any service or repairs to these products, ask the service
technician to perform safety checks to determine that the products are in proper operating condition.
22. Carts and Stands—The appliances should be used only with a cart or stand that is
recommended by the manufacturer.
23. An appliance and cart combination should be moved with care. Quick stops, excessive force, and
uneven surfaces may cause the appliance and cart combination to overturn.
See Figure 1.
GROUND
CLAMP
ELECTRIC
SERVICE
EQUIPMENT
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
EXAMPLE OF ANTENNA GROUNDING
ACCORDING TO NATIONAL ELECTRICAL
CODE INSTRUCTIONS CONTAINED IN
ARTICLE 810 -“RADIO AND TELEVISION EQUIPMENT”
ANTENNA
LEAD IN
WIRE
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
NEC - NATIONAL ELECTRICAL CODE
Figure 1.
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