RCA DIRECTV, Руководство по установке

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Preparing for Installation
10 Chapter 1
Step 4: Estimate Cable Requirements
Now that you’ve decided on the exact mounting site, you need to decide where you
want the cable(s) to enter the house. The next step is to figure out approximately how
much cable you are going to need.
1. Locate the central building ground. You will ground the satellite dish antenna
(using the cable grounding block) to a single point in the central building ground.
The following is a list of acceptable building ground points:
• Grounded interior metal cold water pipe within five feet of the point
where the cable(s) enter the building.
• Grounded metallic service raceway.
• Grounded electrical service equipment enclosure.
• Eight-foot grounding rod driven into the ground (only if bonded to
the central building ground by #6 or heavier bonding wire).
• Other acceptable grounding electrodes that comply with sections 250
and 810 of the National Electrical Code (NEC).
2. Choose a location to mount the grounding block. The block should be as close as
possible to the point where the cable(s) will enter the house.
3. Decide where, inside the house, you plan to put the digital satellite receiver,
HDTV, or HD set-top converter.
4. Measure and record your cable requirements in the spaces provided below.
A Few Words About
Grounding the System
Grounding the DIRECTV
®
System to
the central building ground helps
protect it and other components from
lightning damage. Dish installation
should comply with local codes and
the National Electrical Code (NEC).
Grounding the satellite system is
something you can probably do
yourself. But if you’re not sure, you
should contact a qualified electrician.
Distance from
multiswitch to
grounding block:
________ feet
Distance from grounding
block to digital satellite
receiver, HDTV, or
HD set-top converter:
________ feet
Distance from grounding
block to central building
ground:
________ feet
You can use the multiswitch to route up to four receivers. To use four receivers and
calculate how much cable it will require, repeat this process four times.