Practice Test Geeks(CAT) Commercial Audio Technician Practice Test
← All CAT Flashcard Decks

Industry Knowledge and Safety Standards Flashcards

7 cards from real CAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Industry Knowledge and Safety Standards flashcards as text

  1. A CAT technician encounters a ground loop hum in a large venue PA system. What is the safest and most code-compliant first step to resolve it?

    Answer: Use a transformer-based DI box or isolation transformer

    Isolation transformers break the DC ground loop path without compromising the electrical safety ground, which must never be removed.

  2. According to AES standards, what is the nominal operating level for professional audio equipment?

    Answer: +4 dBu

    +4 dBu is the professional standard nominal operating level, providing adequate headroom above the noise floor.

  3. Which organization publishes the InfoComm/AVIXA standards used by commercial AV professionals?

    Answer: AVIXA (formerly InfoComm)

    AVIXA (Audiovisual and Integrated Experience Association), formerly InfoComm International, develops and publishes AV industry standards.

  4. When rigging loudspeakers over an audience, what is the minimum safety factor (working load limit to breaking strength ratio) typically required by industry standards?

    Answer: 7:1

    A 7:1 safety factor is the industry standard for overhead rigging where failure could cause injury to people below.

  5. What does the CE marking on audio equipment sold in the US market indicate?

    Answer: The product conforms to European Union safety and regulatory standards

    CE marking indicates conformance to EU directives; US sales require FCC certification, not CE, though many products carry both.

  6. A technician must install a loudspeaker system in a restaurant with ambient noise averaging 65 dB(A). What minimum SPL should the system achieve at the listener to provide a +10 dB signal-to-noise ratio?

    Answer: 75 dB(A)

    Adding 10 dB to the 65 dB(A) ambient level yields a target of 75 dB(A) to achieve the required SNR.

  7. Which AVIXA standard specifies intelligibility requirements for speech reinforcement systems in commercial spaces?

    Answer: AVIXA F501.01:2015 (DISCAS)

    AVIXA F501.01:2015 (DISCAS — Display Image Size for 2D Content in Audiovisual Systems) is actually for displays; speech intelligibility for AV uses AVIXA and IEC 60268-16 (STI/STIPA methods).