PG - Item procured and stocked to provide for sustained support for the life of the equipment.. It is applied to an item peculiar to the equipment which, because of probable discontinuance or shutdown of production facilities, would prove uneconomical to reproduce at a later time.

KD - An item of a depot overhaul/repair kit and not purchased separately. Depot kit defined as a kit that provides items required at the time of over-haul or repair.

KF - An item of a maintenance kit and not purchased separately. Maintenance kit defined as a kit that provides an item that can be replaced at organizational or intermediate levels maintenance

KB - Item included in both a depot overhaul/repair kit and a maintenance kit.

MO - Item to be manufactured or fabricated at organizational level.

MF - Item to be manufactured or fabricated at the direct support maintenance level.

MH - Item to be manufactured or fabricated at the general support maintenance level.

MD - Item to be manufactured or fabricated at the depot maintenance level.

AO - Item to be assembled at organizational level.

AF - Item to be assembled at direct support maintenance level.

AH - Item to be assembled at general support maintenance level.

AD - Item to be assembled at depot maintenance level.

XA - Item is not procured or stocked because the requirements for the item will result in the replacement of the next higher assembly.

XB - Item is not procured or stocked. If not available through salvage, requisition.

XC - Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer's part number.

XD - A support item that is not stocked. When required, item will be procured through normal supply channels.

NOTE Cannibalization or salvage may be used as a source of supply for any items coded above except those coded XA and aircraft support items as restricted by AR 700-42.

(2)Maintenance Code. Maintenance codes are assigned to indicate the levels of maintenance authorized to USE and REPAIR support items. The maintenance codes are entered in the third and fourth positions of the Uniform SMR Code format as follows:

(a)The maintenance code entered in the third position will indicate the lowest maintenance level authorized to remove, replace, and use the support item. The maintenance code entered in the third position will indicate one of the following levels of maintenance:

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Tektronix TM506 technical manual
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TM506 specifications

The Tektronix TM506 is a highly regarded modular test instrument platform that has been a staple in the field of electronic testing and debugging since its introduction. Designed primarily for laboratory and field applications, the TM506 stands out for its versatility, usability, and the broad range of plug-in modules that enhance its functionality.

At the core of the TM506 is its modular design, allowing users to configure the instrument according to their specific testing needs. This design accommodates various plug-in modules such as oscilloscopes, digitizers, spectrum analyzers, and multimeters, giving the user flexibility to tailor the system to a variety of testing and measurement scenarios. Each module can be easily swapped out or upgraded, making it a long-term investment for engineers and technicians.

One of the main features of the TM506 is its exceptional analog performance. The system supports bandwidths of up to 1 GHz depending on the chosen modules, providing high fidelity in signal observation. Additionally, the TM506 employs advanced triggering capabilities, enabling it to capture transient events and complex signals with precision. This is particularly useful in troubleshooting and analyzing signal integrity in high-speed digital systems.

The TM506 is built with an intuitive user interface that simplifies operation. Large, clear displays allow for easy reading of measurements, and the controls are designed for efficient navigational flow. This thoughtful design minimizes the learning curve for new users while providing seasoned engineers with quick access to parameters.

In terms of connectivity, the TM506 includes multiple input/output options, accommodating both analog and digital signals. Users can integrate the instrument with other test setups, allowing for synchronized measurements across multiple devices. Furthermore, it supports remote operation, enhancing its applicability in automated testing environments.

The TM506 platform is known for its ruggedness and reliability, making it suitable for both lab and outdoor settings. Built to endure challenging conditions, it is a preferred choice for field engineers needing portable and durable testing equipment.

Overall, the Tektronix TM506 represents an essential tool for professionals in electronics testing and design. Its modularity, exceptional performance, and user-friendly interface combine to create a powerful solution for a wide range of electronic measurement challenges. Whether debugging circuits or validating designs, the TM506 remains a trusted choice among engineers seeking quality and adaptability in their test equipment.
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