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Sigma AM-255 service manual Theory of Operation, Unit Operation

Models: AM-255

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4. THEORY OF OPERATION page 12

4. THEORY OF OPERATION

The alarm monitor model AM-255 is a battery powered, remote monitor unit used with TSA’s pedestrian and vehicle portal monitors. The AM-255 provides both audible and visual alarm indications for radiation alarms, low and high background alarms, and tamper conditions. Parallel relay outputs are provided to permit interfacing with existing alarm systems.

Please reference the wiring/signal flow diagram drawings package provided with the instrument as they are noted in this manual. The Drawings list can be found in the APPENDIX F. Drawings section in this manual.

4.1. UNIT OPERATION

The relays in the portal monitor are continuously monitored by the AM-255. Whenever the relays change state, the AM-255 reads the change and turns on the correct lamp and relay, and sounds the audio alarm. The alarm will follow the system. The green ready LED will go out when the alarm condition occurs, and re-illuminate when the alarm condition clears.

NOTE:

Multiple alarms can occur and more than one alarm lamp be illuminated simultaneously.

The monitor operates from the 12 volt, lead acid battery. If ac power is lost, the battery provides power to permit continued operation without interruption. Should the battery get too low for reliable operation (approximately 10.5 volts), the monitor will turn itself off. Normal operation will resume when the battery has been recharged to approximately 12.5 volts.

Model AM-255

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Sigma AM-255 service manual Theory of Operation, Unit Operation
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AM-255 specifications

The Sigma AM-255 is a cutting-edge, versatile piece of equipment designed to meet the demands of professionals across various industries. Known for its robust engineering and innovative technologies, the AM-255 stands out as a reliable solution for tasks requiring precision and efficiency.

One of the primary features of the Sigma AM-255 is its advanced processing capabilities. Equipped with a high-performance processor, the AM-255 is capable of handling complex calculations and data processing tasks with ease. This results in faster operation speeds, reducing downtime and allowing users to focus on their workload without the frustration of lagging performance.

The AM-255 also integrates state-of-the-art connectivity options. With multiple ports for USB, HDMI, and Ethernet, users can easily connect the device to various peripherals and networks. This flexibility is crucial for professionals who rely on external devices and need to transfer data seamlessly.

In terms of user interface, the AM-255 boasts an intuitive touch screen display that responds quickly and accurately to input. The interface is designed to simplify navigation, making it accessible even for those who may not be tech-savvy. This attention to user experience not only enhances productivity but also encourages proactive engagement with the system.

Another notable characteristic of the Sigma AM-255 is its durability. The device is engineered with high-quality materials that withstand harsh working conditions, making it ideal for fieldwork or industrial environments. Its rugged construction ensures longevity, minimizing maintenance costs and providing peace of mind for users.

Furthermore, the AM-255 features energy-efficient technologies, contributing to a lower carbon footprint. This aligns with global trends towards sustainability, allowing organizations to adopt more eco-friendly practices without sacrificing performance.

Security is also a top priority in the design of the Sigma AM-255. With advanced encryption protocols and secure user authentication features, the device protects sensitive data and prevents unauthorized access, which is crucial for businesses handling confidential information.

In summary, the Sigma AM-255 is a remarkable solution that combines performance, connectivity, user-friendliness, durability, energy efficiency, and security. These main features make it a valuable asset for professionals seeking to enhance their operational efficiency and productivity in today’s fast-paced, technology-driven environment. As new technologies continue to evolve, the Sigma AM-255 is well-positioned to adapt and meet future industry challenges.