SBCA Equipment Setup 3

Question 1

What is the recommended grounding method for a satellite dish mast according to NEC Article 810?

Accepted Answer

Bond the mast to the home's grounding electrode system with a ground block and AWG 10 copper wire

Answer

NEC 810 requires the dish mast to be bonded to the home's existing grounding electrode system using a ground block and minimum AWG 10 copper conductor.

Question 2

A customer reports their HD receiver shows 'Searching for Satellite Signal' after a heavy snowfall. What is the most likely cause?

Accepted Answer

Snow accumulation on the dish reflector blocking the signal

Answer

Snow and ice accumulation on the dish surface block the microwave signal path, causing signal loss that resolves once the dish is cleared.

Question 3

What is the function of a voltage-passing splitter in a satellite distribution system?

Accepted Answer

Passes DC voltage on one port to power an amplifier or LNB

Answer

A voltage-passing splitter allows DC power (used to power inline amplifiers or LNBs) to pass through one designated port while splitting the RF signal.

Question 4

When connecting multiple satellite receivers using a multiswitch, what signal does the IRD send to the multiswitch to select the correct LNB input?

Accepted Answer

DiSEqC commands or 13/18 V DC switching signals

Answer

Receivers use DiSEqC protocol messages or 13 V / 18 V DC voltage levels to instruct the multiswitch which satellite position and polarization to pass.

Question 5

Which type of LNB is required to receive signals from multiple orbital positions using a single dish equipped with multiple feeds?

Accepted Answer

Multi-satellite LNB or LNBF combo

Answer

Multi-satellite LNBFs or offset multi-feed assemblies allow a single dish to collect signals from two or more satellites at different orbital slots simultaneously.

(SBCA) Satellite Broadcasting and Communications Association Certification Practice Test

(SBCA) Satellite Broadcasting and Communications Association Certification Practice Test

SBCA Equipment Setup 3