Communications - Electronics Journeyman CDC 2EX5X

The fault protection subsystem is also known as the safety ground because it is responsible for protecting against electrical faults and ensuring the safety of the facility. It provides a low resistance path for electrical current to flow in the event of a fault, preventing damage to equipment and reducing the risk of electric shock to personnel. This subsystem is crucial in maintaining a safe and reliable electrical system within the facility.

The correct answer is "Estimated time of return to operation". This status refers to the estimated time when a system or equipment will be fully operational again after undergoing repairs or maintenance. It indicates the expected duration until the system can resume its normal functions and be available for use.

The deployment phase involves the actual implementation and installation of communications equipment, putting it in place and commissioning it into service. This phase signifies the transition from planning and preparation to the actual execution and utilization of the equipment. It involves ensuring that the equipment is properly installed, configured, and ready for use in its intended operational environment. The term "employment" accurately describes this phase, as it refers to the act of putting the equipment into active service and utilizing it for its intended purpose.

The AF IMT 3215, IT/NSS Requirements Document is frequently used to initiate the need for a new communications service. This form is specifically designed for documenting the requirements and specifications of an IT or NSS (Network and Switching Systems) project. It helps in clearly defining the necessary communication services and technologies needed for a particular project, ensuring that the requirements are properly communicated and understood by all parties involved. This form serves as a formal request for the procurement and implementation of the new communications service.

The insulation resistance is a measure of how well an insulating material can resist the flow of electrical current. Increasing the thickness of the insulating material can improve its ability to prevent current leakage, thereby increasing the insulation resistance. This is because a thicker insulating material provides a longer path for the current to flow through, making it more difficult for the current to pass through and reducing the chances of leakage. Therefore, increasing the thickness of the insulating material is likely to increase the insulation resistance.

During a basic bit error rate testing procedure, an error signal is generated when any bit in the received signal is not the same as the generated bit. This means that if there is any discrepancy or difference between the bit that was transmitted and the bit that was received, it will result in an error signal being generated. This is a common method used to measure the quality and accuracy of data transmission, as it helps identify and quantify the number of errors occurring in the received signal.

A signal generator is a device that generates an alternating voltage signal of any desired frequency, which makes it suitable for test purposes. It can be used to test and calibrate various electronic equipment and circuits. The signal generated by a signal generator can be either modulated or unmodulated, depending on the specific testing requirements. Therefore, a signal generator is the correct answer to the question.

The primary purpose of an uninterruptible power supply (UPS) is to provide an alternate source of clean AC power in an emergency. This means that in the event of a power outage or disruption, the UPS will kick in and supply power to connected devices, ensuring that they continue to operate without interruption. The UPS acts as a backup power source, protecting sensitive equipment from potential damage or data loss that could occur during sudden power loss. It provides a reliable and stable power supply, preventing any fluctuations or surges that could harm the connected devices.

The passive divider, 10:1 probe is the correct answer because it allows the oscilloscope to measure higher voltage levels by attenuating the signal by a factor of 10. This means that when the probe is connected to the oscilloscope, the voltage being measured is divided by 10, allowing for higher voltage measurements. Additionally, this probe has a high input impedance, which helps to reduce loading effects on the circuit being measured. Unlike active probes, it does not require a bias voltage and is less susceptible to noise interference.

The receiver compares the block check character with the transmitter to ensure an accurate transmission of data. The block check character is a calculated value that is appended to the data being transmitted. The receiver calculates the block check character using the same method as the transmitter and compares it with the received block check character. If they match, it indicates that the data was transmitted accurately.

The angle of reflection is the angle between the normal and the ray that is bounced back in the first material. It is a measure of the change in direction of the ray of light when it strikes a surface and is reflected. The angle of reflection is equal to the angle of incidence, which is the angle between the normal and the incident ray.

A punch down tool is used for making fast connections to terminals without the removal of the conductor insulation. It is commonly used in telecommunications and networking to terminate and connect wires to terminals on patch panels, keystone jacks, and other similar devices. The tool features a sharp, pointed end that is used to push the wire into the terminal block, piercing through the insulation and making a secure connection. This allows for quick and efficient installation without the need to strip the insulation off the wires.

TEMPEST is known as a set of standards for limiting electric or electromagnetic radiation. It includes measures to prevent the unintentional release of compromising emanations from electronic equipment. These emanations can potentially be intercepted and analyzed to extract sensitive information. TEMPEST standards aim to minimize the risk of such information leakage by implementing shielding, filtering, and other protective measures in the design and operation of electronic systems.

The key point about AEF is the Air Force's ability to meet COCOM (Combatant Command) requirements while also reconstituting the rest of the force to sustain this capability. This means that the Air Force can fulfill its operational commitments while simultaneously replenishing and maintaining the readiness of its personnel and equipment. This ensures that the Air Force can consistently provide the necessary capabilities to support military operations.

In a Delta ground configuration, three ground rods are normally used. This configuration requires three conductors connected in a triangular shape, with each conductor connected to a ground rod. The purpose of using multiple ground rods is to provide a low-resistance path for electrical faults to dissipate safely into the ground.

Air Force Communications-Electronics Maintenance Instructions are used to provide the means to issue optional or temporary modifications on C-E equipment. These instructions serve as a guide for maintenance personnel to perform necessary modifications or adjustments to the equipment. They ensure that the equipment is functioning optimally and can adapt to any specific requirements or changes. The instructions outline the procedures and guidelines to be followed during the modification process, ensuring that it is done correctly and efficiently.

The correct answer is Systems telecommunications engineering management-base. This is because system records of equipment that is integrated with the base network are typically developed and maintained by the telecommunications engineering management team. They are responsible for managing the telecommunications infrastructure and ensuring that all equipment is properly integrated and functioning within the network. This includes maintaining records of the equipment, tracking any changes or updates, and ensuring that the system is secure and operating efficiently.

The correct answer is AFMQCC. AFMQCC stands for Air Force Maintenance Quality Control Course, which is a guide primarily used by Quality Assurance to assess equipment condition, maintenance quality, and maintenance management effectiveness. It provides guidelines and standards for evaluating and improving maintenance practices within the Air Force. CFETP (Career Field Education and Training Plan) is a guide for career development, AFJQS (Air Force Job Qualification Standard) is a guide for job qualification requirements, and IMDS (Integrated Maintenance Data System) is a database used for maintenance management.

The Engineering Data Service Center maintains a central repository of CSIR information for the Air Force.

A charged coupled device (CCD) is a digital storage oscilloscope circuit that compensates for high sampling rates of high frequency signals. It is a type of image sensor that converts light into electrical signals, and it can capture and store digital data very quickly. In the context of a digital storage oscilloscope, a CCD can efficiently handle the high sampling rates required for accurately capturing and storing high frequency signals.

Multimode graded-index fiber is the correct answer because it has a core diameter of 50-125µm and consists of numerous concentric layers of glass. These layers are designed to reduce dispersion, which is the spreading out of light signals as they travel through the fiber. The graded index refers to the refractive index of the core, which gradually decreases from the center towards the outer edges. This helps to minimize the difference in travel time for different light rays, reducing dispersion and allowing for higher bandwidth.

The Red Data Module provides a secure interface for computer workstations and local network devices using IP to exchange classified data between nodes of the network. This module ensures that the data being transmitted is protected and remains confidential, making it an essential component for secure communication within the network. The other options mentioned, such as the Basic Access Module, Radio Frequency Module, and Promina Multiplexer module, do not specifically cater to the secure exchange of classified data using IP.

The pattern simulator section of the bit error rate test set converts the NRZ-L data into the desired coding, such as NRZ-M. This is done using a code converter. A code converter is responsible for converting one type of digital code into another. In this case, it takes the NRZ-L data and converts it into the desired coding format, which is NRZ-M.

The frequency range of an audio signal generator is typically between 20Hz to 20KHz. This range covers the audible frequencies that humans can hear, with 20Hz being the lowest frequency and 20KHz being the highest frequency.

The standard for grounding military C-E (Command and Control, Communications, and Computers, and Intelligence, Surveillance, and Reconnaissance) facilities is 10Ω or less. This means that the resistance between the grounding system and the earth should be 10Ω or lower. Grounding is important in military facilities to protect against electrical faults, lightning strikes, and electromagnetic interference, ensuring the safety and proper functioning of the equipment and personnel. A lower resistance value helps to provide a more effective and efficient grounding system.

Deployed Materiel Control is the correct answer because it is responsible for coordinating the transfer of unit type code assets and readiness supply packages. This element of deployed maintenance management ensures that the necessary equipment and supplies are available and properly distributed to support maintenance operations in a deployed environment. It manages the flow of materiel and ensures that assets are properly accounted for and transferred as needed.

Refraction is the bending of light as it passes from one transparent material into another transparent material of different densities. When light travels from one medium to another, its speed changes and this causes the light to change direction. This phenomenon is known as refraction. The amount of bending depends on the difference in densities between the two materials.

Orange markers are typically used to mark underground communications lines. This color is chosen because it is easily visible and stands out against the surrounding environment. Orange markers help to indicate the presence of these lines and prevent accidental damage during construction or excavation work.

The data/clock selector encoder section of a bit error test set control the clock selector and selects either the external clock or the internal clock for processing. This section is responsible for encoding the data and clock signals in order to select the appropriate clock source for the test set.

The three types of digital storage oscilloscope acquisition modes are sample, peak detect, and average. The standard operating mode is sample. In the sample mode, the oscilloscope captures and stores individual samples of the input signal at regular intervals. This mode is commonly used for capturing and analyzing fast-changing signals. Peak detect mode captures and holds the highest and lowest points of the input signal, allowing for the detection of transient events. Average mode takes multiple samples and calculates the average value, reducing noise and providing a more stable representation of the signal. However, the standard operating mode is sample mode, which captures individual samples of the input signal.

The TRN-26 TACAN system provides radio navigation information such as bearing, identification, and distance. TACAN stands for Tactical Air Navigation, and it is a system used by military aircraft for navigation purposes. It provides accurate and reliable navigation information to pilots, allowing them to determine their position and navigate effectively. The TRN-26 TACAN is specifically designed to provide this radio navigation information, making it the correct answer to the question.

Peak detect mode is the correct answer because this mode captures and saves the highest and lowest points in a collection of samples in a digital storage oscilloscope. This mode is useful for capturing transient or sporadic events that may not be easily visible in other modes. It allows for accurate measurement and analysis of peak voltages or frequencies in the waveform.

The correct answer is Communication Focal Point. The Communication Focal Point contains personnel with specific working knowledge of the AOC mission, oversees site operations, and provides direct C4I system and communications support to the AOC. This team is responsible for ensuring effective communication within the AOC and supporting the operational needs of the AOC mission.

The Air Support Operations Center (AOC) is responsible for passing scramble and control authority to authorized personnel for allocated sorties and establishing coordinated procedures to facilitate the authorized diversion of preplanned missions.

A time domain reflector is used to locate breaks in a cable. This device sends a pulse down a cable and measures the reflections that occur when the pulse encounters a change in impedance, such as a break or fault in the cable. By analyzing the time delay and amplitude of the reflections, the exact location of the break can be determined. This is a useful tool for troubleshooting and repairing damaged cables.

The primary means of measuring the quality of transmitted digital information is BER, which stands for Bit Error Rate. This measurement is derived by calculating the ratio of the number of bits in error to the total number of bits transmitted. By comparing the number of erroneous bits to the total number of bits sent, the BER provides an indication of the accuracy and reliability of the transmission. A lower BER value indicates a higher quality transmission with fewer errors.

The amount of deviation of a FM carrier is determined by the amplitude of the modulating signal. In frequency modulation, the frequency of the carrier signal is varied in proportion to the amplitude of the modulating signal. As the amplitude of the modulating signal increases, the frequency deviation of the carrier signal also increases. This means that the carrier signal will have a wider range of frequencies, resulting in a larger deviation. Conversely, if the amplitude of the modulating signal is decreased, the frequency deviation of the carrier signal will be smaller.

DATCALS stands for Deployable Air Traffic Control and Landing System. It is a mobile air traffic control system that can be deployed in remote or temporary locations to provide RAPCON (Radar Approach Control) capabilities. RAPCON is responsible for managing the approach and departure of aircraft in a specific airspace. By deploying DATCALS, air traffic controllers can effectively control and coordinate aircraft movements, ensuring safe and efficient operations in areas where traditional air traffic control infrastructure is not available or has been disrupted.

The Rivet Joint aircraft supports theater and national level consumers with near real-time on-scene intelligence collection, analysis, and dissemination capabilities.

The Joint Surveillance Target Attack Radar System (Joint STARS) is an aircraft that is primarily used for ground surveillance. It provides theater ground and air commanders with real-time, wide-area surveillance and battle management. Joint STARS uses a synthetic aperture radar to detect, track, and classify moving ground targets, making it an essential asset for ground and air commanders in theater.

The correct answer is Crypto Module. The Crypto Module provides encryption/decryption capability for aggregate data channels that interface to legacy communications terminals and the FTSAT. This module ensures secure communication by encrypting the data transmitted over the channels and decrypting it at the receiving end. It is specifically designed to handle encryption and decryption processes, making it the appropriate choice for this scenario. The other options, such as Crypto Interface Module, Radio Frequency Module, and Promina Multiplexer Module, do not provide the same encryption/decryption capability required for this purpose.

A radio frequency generator is used to align telemetry receivers. This means that it is used to calibrate and adjust the receivers so that they are properly synchronized and tuned to the desired frequency. This ensures that the receivers are accurately receiving and interpreting the telemetry data being transmitted.

The most widely used reference level when using a power meter is 1 milliwatt. This is because milliwatts are a commonly used unit for measuring power in various applications, such as telecommunications, electronics, and laser technology. It provides a convenient and practical reference point for power measurements, allowing for accurate comparisons and analysis of power levels.

A Project Support Agreement (PSA) is a document that outlines the equipment to be installed, the agreed-upon sites for installation, the supporting construction needed, and the services required for a project. It serves as a comprehensive agreement that ensures all parties involved are aware of the necessary equipment, sites, construction, and services needed for the successful completion of the project.

The senior management function for AOC communications support is the Communications focal point (CFP). This role is responsible for coordinating and managing all communication activities within the AOC network. They serve as the central point of contact for all communication-related issues and ensure effective communication between different departments and stakeholders. The CFP plays a crucial role in ensuring smooth and efficient communication within the organization, enabling effective decision-making and coordination.

The correct answer is "Earth electrode, lightning protection, fault protection, and signal reference." These four subsystems make up the facility grounding system. The earth electrode provides a low-resistance path to the ground, ensuring that electrical faults are safely discharged. Lightning protection safeguards the facility from lightning strikes and directs the electrical current safely to the ground. Fault protection detects and isolates faults in the electrical system to prevent damage. Signal reference ensures that all electrical signals have a common reference point, reducing noise and interference.

Technical evaluations give an overall view of the quality of maintenance and provide useful data for identifying training deficiencies and potential problem areas. These evaluations assess the technical skills and knowledge of the maintenance personnel, as well as the effectiveness of the maintenance processes and procedures. By analyzing the results of technical evaluations, organizations can identify areas that require improvement, such as additional training or equipment upgrades, to enhance the overall quality of maintenance operations.

In a normal AEF life cycle, the normal training period is 14 months and the deployment period is 4 months. This means that individuals in the AEF typically undergo 14 months of training before being deployed for a period of 4 months.

The frequency range of the 8640B radio frequency signal generator is from 500KHz to 512MHz.

The modulating index is a measure of the extent of modulation in a signal. It is calculated by multiplying the sideband and the modulating frequency. This formula is used to determine the modulation index in frequency modulation (FM) systems, where the sidebands are created by the modulation of the carrier signal with the modulating frequency. By multiplying these two values, we can obtain the modulating index, which provides information about the amount of frequency deviation in the FM signal.