Free CTS Installation and Systems Integration Test 1
A technician installs a condenser microphone. It is not picking up audio. What is the MOST LIKELY cause?
Condenser microphones require phantom power (typically 48 volts) to operate. If phantom power is not turned on at the microphone preamp or mixer, the condenser microphone will not function properly and will not pick up any audio signal. Therefore, ensuring that phantom power is enabled is crucial when using condenser microphones.
How would a commissioning technician establish substantial completion/practical completion?
Substantial completion or practical completion in commissioning typically involves completing all preliminary tests to ensure that systems are installed correctly and are ready for final testing and operation. This stage marks a critical milestone where the commissioning technician verifies that the systems meet the required standards and specifications before final sign-off.
A customer has recently added a second wireless microphone to an existing system. The customer now complains that the sound quality from both microphones has degraded.
Of the following, which is the MOST LIKELY cause of the problem?
Wireless microphones operate on specific frequency bands to avoid interference. If the new wireless microphone operates on a frequency that is too close to the frequency of the existing microphone, they can interfere with each other, causing sound quality issues such as dropouts, noise, or reduced range. Therefore, using wireless microphones that operate on different frequencies or ensuring they are properly coordinated to avoid overlap is crucial to maintaining sound quality in a multi-microphone setup.
What method can a technician use onsite to verify that the AV device is set to the proper IP address?
HyperTerminal (or a similar terminal emulation program) can be used to connect to the AV device via its console port (often accessed through USB or RS-232) to check and configure network settings, including verifying or setting the IP address. This method allows direct communication with the device's operating system or management interface, enabling the technician to confirm and adjust network configurations as needed.
A client requires a front projection system. What drawings should be requested from the client to select the appropriate lens?
Reflected ceiling plans and elevations are essential for selecting the appropriate lens for a front projection system because they provide detailed information about the ceiling layout, including the placement of lights, HVAC components, and other elements that may affect the projection path. These plans also show the height and location of walls, which are critical for determining the correct throw distance and lens type to achieve the desired image size and quality.
There is a conflict between the wall plate height specified in AV documents and the height the electrical contractor is saying must be used on site.
Which of the following forms would be used by the integrator to seek clarification of the correct mounting height of wall plates?
An RFI (Request for Information) is used to clarify details, specifications, or requirements that may be unclear or conflicting in project documents. In this case, where there is a conflict between the specified wall plate height in AV documents and the height specified by the electrical contractor, the integrator would submit an RFI to request clarification from the appropriate party (e.g., the client, architect, or consultant) regarding the correct mounting height of the wall plates. This helps resolve discrepancies and ensures that construction proceeds according to the correct specifications.
For an ethernet cable (UTP) to meet certification standards, the maximum length is:
Ethernet cables (UTP - Unshielded Twisted Pair) are typically certified to operate reliably up to a maximum length of 100 meters (about 328 feet) according to industry standards. This length ensures proper signal integrity and performance for network communication.
Which mounting hardware will provide the MOST support when mounting a camera bracket to a sheetrock/plasterboard not located near a wall stud?
Snap toggles or hollow wall anchors are designed to spread out behind the wall surface, providing a secure grip even when there is no wall stud nearby. They are ideal for applications where additional support is needed in drywall (sheetrock/plasterboard) to hold heavier items like camera brackets securely in place. Therefore, snap toggles or hollow wall anchors would be the best choice to ensure stability and support for mounting the camera bracket in this scenario.
The original LCD monitor specified on the project was not available. The model used to replace it has a lower native resolution than the original monitor.
What device could be used to keep the EDID table from now calculating the EDID table to a lower resolution for the whole system?
A scaler is a device that can adjust the resolution of the input signal to match the native resolution of the display device. In this scenario, using a scaler allows you to scale up the lower native resolution of the replacement monitor to match the higher resolution originally specified for the project. This ensures that the system continues to operate at the intended resolution without compromising image quality or compatibility.
When selecting a DC power supply that has to run a long distance, what must be considered?
When running a DC power supply over a long distance, the primary concern is voltage drop. Voltage drop occurs due to the resistance of the cable, which increases with the length of the cable. This can result in insufficient voltage at the load end of the cable, potentially causing the equipment to malfunction. Therefore, it is crucial to account for voltage drop and select an appropriate power supply and cable to ensure adequate voltage is maintained over the distance.
Before audiovisual equipment can be brought to a site what MUST occur?
Ensuring that the site is clean and dust-free is crucial before bringing in sensitive audiovisual equipment. Dust and debris can potentially damage equipment or affect its performance. While the installation of cables (option c) and wiring the rack (option d) are necessary steps, having a clean and suitable environment to set up and operate the equipment is a fundamental prerequisite to protect and maintain its functionality.