CTS General 1 — Questions and Answers
Question 1: The customer demands a front projection system. What drawings should be acquired from the customer in order to pick the proper lens?
- structural and electrical designs
- Floor layouts and wall detailing
- reflected elevations and ceiling plans (Correct answer)
- Details on the building section and millwork
Correct answer: reflected elevations and ceiling plans
To select the proper lens for a front projection system, AV integrators need to understand the room's dimensions, potential obstructions, and mounting points. Reflected ceiling plans show the ceiling grid, light fixtures, and projector mounting locations, while reflected elevations provide details on wall features and screen placement. These drawings are crucial for calculating throw distance, image size, and ensuring optimal viewing.
Question 2: What factors should be addressed while selecting a DC power source for long-distance operation?
- voltage drop (Correct answer)
- inductance
- RF interference
- cable capacitance
Correct answer: voltage drop
When transmitting DC power over long distances, resistance in the cable causes a significant voltage drop, meaning the voltage at the load end will be lower than at the source. This drop can lead to insufficient power for devices, so it's a critical factor to calculate and mitigate through proper cable gauge selection or voltage boosting. Inductance, RF interference, and cable capacitance are generally less critical for DC power transmission over typical distances compared to voltage drop.
Question 3: What should be done initially if a control system's touch screen is reported to be locked, frozen, or otherwise unresponsive?
- Check all ports and check that the screen is not in power saver mode (Correct answer)
- Remove the device, replace it, and return it to the manufacturer for diagnostic testing
- Check for continuity using a voltage meter, then remove and swap out the mother board
- Redirect all systems to the nearest functional system
Correct answer: Check all ports and check that the screen is not in power saver mode
When a control system's touch screen is unresponsive, the initial troubleshooting steps should always be the simplest and most common causes. Checking all ports ensures that cables are securely connected, as loose connections can prevent proper communication. Additionally, verifying that the screen isn't in power saver mode is crucial, as a sleeping display can appear locked or frozen, leading to unnecessary complex diagnostics.
Question 4: When working with a client to build an AV solution for a new conference center, they want a precise budget for equipment and installation. What stage is the project in?
- Installation phase
- Bidding phase
- Program phase
- Design phase (Correct answer)
Correct answer: Design phase
The design phase is where detailed plans and specifications for an AV solution are developed, including equipment selection, system architecture, and installation requirements. This level of specificity is essential for creating a precise budget, as it moves beyond conceptual ideas to concrete, itemized costs for both hardware and labor. Without a detailed design, budget estimates would be speculative rather than precise.
Question 5: What happens next after you've presented a proposal to a customer, confirmed that all concerns have been addressed, and the final purchasing decision will be taken in an internal meeting?
- Include the client in company e-blasts
- Communicate consistently until a choice is made (Correct answer)
- Wait for the client's email with the order
- Call once or a month later
Correct answer: Communicate consistently until a choice is made
After presenting a proposal and addressing all client concerns, consistent communication is vital to maintain engagement and demonstrate commitment. This proactive approach keeps the project top-of-mind for the client, allows for any last-minute questions or clarifications, and reinforces the vendor's dedication to securing the business, rather than passively waiting for a decision.
Question 6: Projectors may employ several light technology for a variety of purposes. Which technology is recommended for long-term use without changing the light source?
- LED lamp (Correct answer)
- Arc lamp
- Halogen lamp
- Fluorescent lamp
Correct answer: LED lamp
LED lamps are highly recommended for long-term use in projectors because they offer significantly longer lifespans compared to traditional lamp technologies like arc, halogen, or fluorescent lamps. This extended durability translates to reduced maintenance, fewer light source replacements, and lower operational costs over the projector's lifetime, making them a more sustainable choice for continuous operation.
Question 7: What system is utilized to present colors on a video display?
- Recover color system
- Plus/minus color system
- Subtractive color system
- Additive color system (Correct answer)
Correct answer: Additive color system
Video displays, such as televisions and computer monitors, utilize the additive color system to present colors. This system combines varying intensities of red, green, and blue (RGB) light to create a wide spectrum of visible colors. When all three primary colors are fully illuminated, they produce white light, demonstrating the additive nature of this color model.
Question 8: What level does a display's brightness controls adjust?
- White Level
- Hue
- Black Level (Correct answer)
- Chroma Level
Correct answer: Black Level
On a video display, the 'brightness' control primarily adjusts the black level of the image. This setting determines how dark the darkest parts of the picture appear, impacting contrast and shadow detail. Correctly setting the black level ensures that dark areas are rich and deep without losing important visual information.
Question 9: When developing an AV solution for a customer, what should the first step be?
- Obtaining application requirements (Correct answer)
- Requires analysis
- Reviewing the current infrastructure
- Establish a concept for audiovisual design
Correct answer: Obtaining application requirements
The fundamental first step in developing any AV solution is to thoroughly understand and obtain the customer's application requirements. This involves identifying their specific needs, goals, and how they intend to use the audiovisual system. This crucial information forms the foundation for all subsequent design, equipment selection, and implementation decisions, ensuring the final solution effectively meets their objectives.
Question 10: Noise in a space can distract users and reduce the efficacy of an audiovisual system. Which one of the following produces mechanical and structural noise?
- Reflected ceiling plans and elevations
- Why the VLAN is necessary
- A signal generator and signal analyzer
- HVAC fans, diffusers and air handlers (Correct answer)
Correct answer: HVAC fans, diffusers and air handlers
HVAC (Heating, Ventilation, and Air Conditioning) systems, including their fans, diffusers, and air handlers, are primary sources of mechanical and structural noise in a building. This type of noise can significantly degrade the acoustic environment, interfering with speech intelligibility and the overall efficacy of an audiovisual system. Therefore, managing HVAC noise is a critical consideration in AV design.
Question 11: What causes Alien Crosstalk (AXT) in network systems?
- Range, reliability, speed and security
- UTP cables are packaged alongside other low voltage UTP wires (Correct answer)
- Ensure proper power source(s) and AV program source access.
- Check all ports and check that the screen is not in power saver mode
Correct answer: UTP cables are packaged alongside other low voltage UTP wires
Alien Crosstalk (AXT) in network systems occurs when signals from one unshielded twisted pair (UTP) cable interfere with signals in an adjacent UTP cable. This interference is particularly problematic when multiple UTP cables are bundled closely together, as the electromagnetic fields from one cable can induce unwanted signals in its neighbors. It's termed 'alien' because the interference originates from outside the cable itself.
CTS General 1
The customer demands a front projection system.
What drawings should be acquired from the customer in order to pick the proper lens?