CDC 2a951n Vol 5

The AM-853B component in the AN/APN-59 radar system furnishes both pitch and roll drive signals to the antenna stabilization motors.

The JTIDS receiver/transmitter (R/T) selects the antenna with the most favorable signal-to-noise ratio to ensure the best quality of the received signals. This means that the antenna that provides the clearest and strongest signal, with the least amount of noise interference, will be chosen for the message transmission.

The correct answer is Nickel-cadmium. Nickel-cadmium batteries are commonly used as emergency back-up power sources because they have a high energy density, long cycle life, and can provide a reliable power supply for critical systems like the Joint Tactical Information Distribution System (JTIDS) terminal. Lithium batteries are also commonly used for back-up power, but they are not listed as an option in this question. Sulphur dioxide and Nickel-metal hydride batteries are not typically used for emergency back-up power in this context.

The correct answer is 1050. The question is asking for the power output in watts of the high power amplifier of the Joint Tactical Information Distribution System (JTIDS) when transmitting in the high power mode. The answer of 1050 indicates that the high power amplifier has a power output of 1050 watts in this mode.

To replace the battery stick in the transponder TS-3977 test set, 6 C-size batteries are required.

The control unit of a computer acts like a sophisticated switchboard operator. It is responsible for coordinating and controlling the activities of all the other parts of the computer. It fetches instructions from memory, decodes them, and then directs the appropriate actions to be performed by the arithmetic unit, logic unit, and other components. The control unit ensures that instructions are executed in the correct sequence and that data is transferred between different parts of the computer as needed.

In the MIL-STD 1553 data bus system, when the bus controller (BC) does not require the data for processing, the type of command being used is RT to RT. This means that a remote terminal (RT) is sending data directly to another remote terminal (RT) without involving the bus controller (BC). This type of command allows for direct communication between RTs without the need for the BC's involvement.

The correct answer is "The dimmer control is disabled." This means that during bright lighting conditions, the digital readout dimmer control of the combined altitude radar altimeter (CARA) does not serve any purpose. It cannot be used to dim or brighten the display.

During the heterodyning process in a radar receiver, the difference between the echo frequency and the local oscillator beat frequency produces an intermediate frequency. This intermediate frequency is used for further processing and analysis of the radar signal.

A unit that has the need and capability to participate in both Link-16 and older Link systems would normally be assigned an address between 00001 to 00177. This range of addresses allows the unit to communicate and exchange data effectively with both systems. The other options (00177 to 00277, 17700 to 17877, and 17877 to 17977) do not provide the same level of compatibility and may result in communication issues or limitations for the unit.

The network time reference (NTR) establishes the network system time for a Link-16 system. This means that the NTR is responsible for synchronizing the time across all the devices in the network, ensuring that they are all operating on the same time reference. The NTR serves as a central time source for the network, allowing for accurate and coordinated communication between the different components of the system.

Microprocessors are chips with circuits that can perform the tasks of all the different components of a computer. They are responsible for executing instructions, performing calculations, and managing data flow within the computer system. Valves are not used in modern computers, circuit boards are the physical platforms that hold the components together, and microchips refer to integrated circuits in general, not specifically designed for computer processing. Therefore, microprocessors are the correct answer.

An AND gate is a type of computer chip gate that only sends a pulse when it receives a pulse at both of its terminals. This means that both inputs of the AND gate must be high (or receive a pulse) in order for the gate to output a high signal. If either or both of the inputs are low (or do not receive a pulse), the AND gate will output a low signal.

A waveguide gasket is used to prevent the leakage of energy. Waveguides are used to guide and transmit electromagnetic waves, and a gasket is used to provide a tight seal between different sections of the waveguide. If there is any leakage of energy, it can lead to loss of signal strength and inefficient transmission. Therefore, the main purpose of a waveguide gasket is to ensure that energy is contained within the waveguide and not lost through leakage.

During the confidence test, the gain of the APX-64 transponder receiver/transmitter (R/T) module is increased in the Intermediate Frequency (IF) amplifier.

The TS-1843A transponder test set has two operating modes: TEST and MONITOR. The TEST mode is used to perform tests and measurements on the transponder, while the MONITOR mode is used to monitor the transponder's performance and signals. The other options, RF and CONFIDENCE, are not mentioned as operating modes for this specific test set.

The correct answer is ten centimeters. When using the 1 and 3 milliohm range on the model 4328A millohmmeter, the probes and cables must be placed at least ten centimeters away from a conducting surface. This distance is necessary to ensure accurate measurements and prevent any interference or influence from the conducting surface on the readings.

Torque is the measure of force applied to rotate an object around an axis. It is calculated by multiplying the force applied by the distance from the axis of rotation. In this question, a force of 2 pounds is applied to the handle end of a five-inch wrench. To calculate the torque at the bolt end, we multiply the force by the distance from the axis (5 inches). Therefore, the torque developed at the bolt end of the wrench is 10 inch-pounds (2 pounds * 5 inches = 10 inch-pounds).

The correct answer is 36 inch-pounds. To compensate for the extension, the torque wrench should be set at a higher value than the desired torque. The length of the wrench and extension should be considered when calculating the correct torque. In this case, the wrench is 12 inches long and the extension is 8 inches long. The total length is 20 inches. To find the correct torque, we can use the formula: Correct Torque = Desired Torque x (Total Length / Length of Wrench). Plugging in the values, we get: Correct Torque = 60 inch-pounds x (20 inches / 12 inches) = 100 inch-pounds. Therefore, the torque wrench should be set at 36 inch-pounds to compensate for the extension and reach the correct torque.

Simulation is the correct answer because the ability to introduce an error condition into the data and observe how the system reacts is a key feature of a data bus analyzer's simulation function. Simulation allows users to test the system's response to different scenarios and identify any potential issues or errors in the system.

The correct answer is CAL ADJ. The CAL ADJ power meter control is used to compensate for a slight sensitivity associated with a particular type of power sensor. This allows for accurate measurements by adjusting the calibration of the power meter to match the sensitivity of the sensor being used.

A time domain reflectometer (TDR) is a piece of test equipment that uses electromagnetic wave pulses to create a visual display of cable faults. It sends a pulse down the cable and measures the time it takes for the pulse to reflect back. By analyzing the reflections, it can identify and locate faults in the cable, such as breaks, shorts, or impedance mismatches. A multimeter, signal generator, and frequency counter are not designed for this purpose and do not use electromagnetic wave pulses to create a visual display of cable faults.

To measure relative power using a power meter, you would first apply the power level and then press "dB REF." This is because the dB REF function allows you to set a reference point for the measurement, which is necessary for calculating relative power. By setting a reference point, you can compare the power level being measured to the reference point and determine the relative power.

In order to perform the radiation test method using the Tactical Air Navigation (TACAN) flightline test set, it should be placed 50 feet away from the TACAN antenna. This distance ensures that the test set is at a safe distance from the antenna to avoid any interference or damage to the equipment during the testing process.

When zeroing the power sensor, the correct procedure is to press and hold the SENSOR ZERO switch and wait for the digital readout to stabilize. This means that the reading on the digital display should stop fluctuating and settle on a steady value. This ensures that the power sensor is properly calibrated and ready for accurate measurements. The other options, neutralize, climb to 1.000 milliwatt (mW), and climb to -1.000 mW, are not the correct steps for zeroing the power sensor.

When the Bearing CW/CCW switch is turned on the ARM-184 flightline test set, the angular rate increases or decreases at a rate of 5 degrees per second.

The radio frequency transmission line test set (RFTLTS) is used to diagnose cable faults. It can measure voltage standing wave ratio (VSWR)/return loss, voltage tests, continuity tests, and disturbance measurements. However, the specific purpose of the RFTLTS mentioned in the question is to perform distance-to-fault measurements. This means that it can accurately determine the location of a fault or break in the cable, allowing for efficient troubleshooting and repair.

The correct answer is SELECT. In a radio frequency transmission line test set (RFLTS), the SELECT key is used to access the alpha portion of the alphanumeric data entry keypad. This key allows the user to choose or highlight specific options or characters on the keypad for input or selection purposes.

A power sensor is essentially a transducer. A transducer is a device that converts one form of energy into another. In the case of a power sensor, it converts electrical power into a measurable signal, such as voltage or current. This allows the power sensor to accurately measure and monitor the power being used in a circuit or system. Therefore, a power sensor can be considered a transducer as it converts electrical power into a measurable signal.

The ARM-184 flightline test set can measure the tracking ability of the Tactical Air Navigation (TACAN) range circuits up to a maximum range of 132 nautical miles (NM).

When initializing the radiofrequency transmission line test set (RFLTS), the correct method to use is voltage standing wave ratio (VSWR)/return loss self-alignment. This method ensures that the VSWR and return loss are properly calibrated, which is important for accurately measuring the performance and quality of the transmission line. By aligning the VSWR and return loss, any discrepancies or faults in the transmission line can be identified and corrected. This helps to optimize the performance of the transmission line and ensure efficient signal transmission.

The power meter can display in either watts or dBm when checking for absolute power. dBm is a unit of power measurement that represents the power level in decibels relative to 1 milliwatt. It is commonly used in telecommunications and RF (radio frequency) applications to measure signal power.

The primary component of any computer information system is the central processing unit (CPU). The CPU is responsible for executing instructions, performing calculations, and controlling the overall operation of the computer. It is often referred to as the "brain" of the computer as it carries out all the necessary tasks to process and manipulate data. While storage and memory are important components of a computer system, they serve different functions. Storage is used to store data and programs, while memory is used to temporarily hold data that the CPU is actively working on. The arithmetic logic unit (ALU) is a component of the CPU that performs mathematical and logical operations. However, the CPU encompasses all these components and is the central component that coordinates and manages the entire computer system.

MIL-STD 1553A is the version of the Military-Standard (MIL-STD) 1553 data bus that does not provide definitions for mode codes. Mode codes are used to control the operation of the data bus and specify the type of data being transmitted. MIL-STD 1553B, MIL-STD 1553C, and MIL-STD 1553D are all later versions of the standard that do provide definitions for mode codes.

A computer uses buffers to synchronize the processing of input/output operations and provide an overlap of operations. Buffers are temporary storage areas that hold data while it is being transferred between devices. They allow the computer to continue processing other tasks while data is being transferred, improving overall efficiency and performance. Channels, registers, and controllers are all components involved in input/output operations, but they do not specifically handle synchronization or overlap of operations like buffers do.

Silicon is the basic element in a computer microchip. Microchips are made from semiconductors, and silicon is the most commonly used semiconductor material due to its abundance and favorable electrical properties. Silicon is used to create transistors, which are the building blocks of microchips. These transistors control the flow of electrical signals within the microchip, allowing it to perform various functions and processes. Therefore, silicon is the correct answer as it is the fundamental element used in computer microchips.

RAID-0 is a redundant array of independent disks (RAID) configuration that does not have redundancy of data. In RAID-0, data is striped across multiple disks without any redundancy or fault tolerance. This means that if one disk fails, all the data on that disk is lost. RAID-0 is primarily used for performance improvement, as it allows for faster read and write operations by distributing data across multiple disks. However, it does not provide any data protection or redundancy in case of disk failure.

Data stripping is the technique where a block of data is segmented into numerous blocks so that sequential blocks can be written. This technique is commonly used in storage systems to improve performance and reliability. By striping data across multiple disks, the system can write and read data in parallel, which increases throughput. Additionally, data stripping can also provide fault tolerance by distributing redundant information across multiple disks, allowing for data recovery in case of disk failures.

The speed of a computer's activities is controlled by the clock. The clock generates a steady stream of electronic pulses that synchronize and regulate the operations of the computer's components, such as the CPU and memory. These pulses determine the speed at which instructions are executed and data is processed, ensuring that different parts of the computer work together in a coordinated manner. The clock speed is measured in hertz (Hz) and a higher clock speed generally results in faster processing and better performance.

A router is a device that is responsible for moving information across an internetwork from source to destination. It is designed to analyze the destination address of each packet and determine the best path for it to reach its destination. Routers use routing tables to make these decisions and can connect multiple networks together. A bridge, on the other hand, is used to connect two or more local area networks (LANs) together, while a repeater simply amplifies and regenerates signals to extend the reach of a network. Protocol refers to a set of rules and guidelines that govern the communication between devices on a network.

Internet protocols are a set of rules and guidelines that enable communication between different devices and networks. They provide a standardized way for data to be transmitted and received across interconnected networks, allowing for seamless communication and information exchange. The other options, such as a relay between work stations or a signal that produces radio frequencies, do not accurately describe the purpose or function of Internet protocols. Similarly, the option of printing documents from any work station is unrelated to the concept of Internet protocols.

The correct answer is SDU load control unit. The Joint Tactical Information Distribution System (JTIDS) control monitor set (CMS) consists of various subassemblies that are used for controlling and monitoring the JTIDS system. The SDU load control unit is one of these subassemblies, which is responsible for controlling the loading of data onto the secure data units (SDUs) within the JTIDS system. It ensures that the correct data is loaded onto the SDUs and that they are functioning properly. The SDU load control unit plays a crucial role in the overall operation of the JTIDS system.

The purpose of the Multifunctional Information Distribution System (MIDS) data link terminal is to provide line of sight connectivity to a local area network. This means that the terminal allows for communication between devices within a specific geographic area, using a direct line of sight connection. This connectivity is important for efficient and reliable data transmission within a localized network.

The satellite communication/global positioning system (SATCOM/GPS) antenna enables beyond line of sight (BLOS) coverage in the tactical information gateway (TIG) system. This antenna allows for communication and positioning information to be transmitted and received from satellites, which provides coverage even when direct line of sight is obstructed. The other options, such as L-band antennas, multipurpose interface panel (MIP), and low noise amplifier (LNA)/diplexer assembly, do not specifically enable BLOS coverage.

The Joint Tactical Information Distribution System (JTIDS) achieves fine synchronization through two processes: passive and active. In the passive process, JTIDS receives timing information from external sources without actively transmitting any signals. In the active process, JTIDS actively transmits synchronization signals to establish and maintain synchronization with other systems. Therefore, both passive and active processes are involved in achieving fine synchronization in JTIDS.

The sharper a computer monitor's image is, the higher the resolution. This is because resolution refers to the number of pixels that can be displayed on the screen, and a higher resolution means more pixels and therefore a sharper image. The dot color, dot pitch, and refresh rate are not directly related to the sharpness of the image.

The Joint Tactical Information Distribution System (JTIDS) operates in the L-band frequency. The L-band is a portion of the electromagnetic spectrum that ranges from 1 to 2 GHz. It is commonly used for various communication systems, including military applications. JTIDS utilizes this frequency band for secure and reliable data transmission between military platforms, enabling effective tactical information sharing and coordination.

The time it takes for a radar echo to return can be used to calculate the distance to the target. In this case, the echo returns after 310 microseconds. Since the speed of light is approximately 186,000 miles per second, we can calculate the distance by multiplying the speed of light by the time it takes for the echo to return. Therefore, the target is approximately 57.66 miles away. However, since the answer choices are in whole numbers, the closest option is 25 miles.

The receiver is the part of a radar set that amplifies and converts a wave into a video signal. It receives the radar signal that is reflected back from the target and amplifies it to a level that can be processed. It then converts the signal into a video format that can be displayed on the radar screen or indicator. The receiver plays a crucial role in detecting and interpreting the radar signals, allowing the operator to identify and track targets.

To accurately locate an object in space using radar pulses, you need to know the range and direction of the object. Range refers to the distance between the radar and the object, while direction indicates the angle at which the object is located relative to the radar. Altitude and speed are not sufficient for accurately locating an object in space using radar pulses.