Black Box LBH100A, AE-H, LBH110A, AE-P, LBH110A, AE-H, LBH100A, AE-P Frame Buffering and Latency

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BLACK BOX® Media Converter Switches

Installation and User Guide

2.3 Frame Buffering and Latency

The LBH100A and LBH110A Series Media Converter Switches are store-and- forward switches. Each frame (or packet) is loaded into the Switch’s memory and inspected before forwarding can occur. This technique ensures that all forwarded frames are of a valid length and have the correct CRC, i.e. they are good packets. This eliminates propagation of bad packets, enabling all of the available bandwidth to be used for valid information.

While other switching technologies such as "cut-through" or "express" impose minimal frame latency, they will also permit bad frames to propagate out to the Ethernet segments connected. The "cut-through" technique permits collision fragment frames, which are a result of late collisions, to be forwarded to add to the network traffic. Since collisions and bad packets are more likely when traffic is heavy, the result of store-and- forward operation is that more bandwidth is available for good packets when the traffic load is greatest.

To minimize the possibility of dropping frames on congested ports, each LBH100A and LBH110A Series Media Converter Switch dynamically allocates buffer space from 128Kb memory pool, ensuring that heavily used ports receive very large buffer space for packet storage. (Many other switches have their packet buffer storage space divided evenly across all ports, resulting in a small, fixed number of packets to be stored

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Contents Media Converter Switches Black BOXSeries Media Converter Switches TrademarksPhone 724 Contacting Black Box CorporationIii Page Page Page Vii Viii Specifications Operation Page Ports Performance Network StandardsMaximum Ethernet Segment or Domain Lengths Operating EnvironmentStorage Temperature Cold StartPower Supply Cooling MethodOffice Ratings 0 to 40C Factory Floor Ratings -25 to 60CTemperature un-controlled Extreme Ratings -40 to 75C Page Port Connectors SwitchesLED Indicators Dual front and top Mounting optionsAgency Approvals and Standards Compliance LBH100 Models for 100Mb fiber Accessories Inspecting the Package and the Product Product Description Page Page Page 2a LBH100A with 100Mb ST connector B LBH100A-H with 100Mb SC connector 2c LBH100A-P with 100Mb SC Connector Page Frame Buffering and Latency Page Page „ Rugged metal case, Industrial grade „ Mdix ports to eliminate cross-over cable while cascading Page Example1. Indoor Office LBH100A or LBH110A LE2425 Example 2 LBH100A-H and LBH110A-H LE2425APage Example 3 LBH100A-P or LBH110A-P LE2425Page Locating the Converter Switch Unit Page Page LH1505P-RACK for Rack Mounting Media Converter Switches Page DIN-Rail mounting option An LBH100 is shown alongside the DIN-Rail-MC2 bracketPage Black BOX 48VDCPage DC Power Terminals +, -, gnd Input currentPage Connecting Ethernet Media GND can be hooked up at the lastMedia Ieee Standard Page Connecting Fiber Optic ST-type, twist-lock Connecting Fiber Optic SC-type, Snap-In Page 10 Mb Page Dual-Speed Functionality, and Switching Switching, Filtering and Forwarding Switching, Address Learning Auto-cross MDIX, Auto-negotiation and Speed-sensingPWR Illuminates Green to indicate power applied Steady on for Full duplex mode, OFF for half duplex per port Troubleshooting Before Calling for Assistance Page When Calling for Assistance Return Material Authorization RMA Procedure Shipping and Packaging Information

LBH110A, AE, LBH100A, AE-P, LBH110A, AE-H, LBH110A, AE-P, LBH100A, AE specifications

The Black Box LBH series includes a range of advanced video and audio solutions designed for professional applications, particularly in broadcasting and digital signage. The LBH100A, AE-H, LBH100A, AE, LBH110A, AE-P, and LBH110A, AE-H models represent cutting-edge technology that meets the demands of modern audiovisual environments.

The LBH100A series, comprising the LBH100A, AE-H, AE, and AE-P models, boasts impressive features such as high-definition video processing capabilities. These units support various video formats, ensuring compatibility with a wide range of devices and media sources. The robust architecture of the LBH100A series allows for seamless integration into existing systems, making it a versatile choice for both new installations and updates to legacy systems.

In particular, the LBH100A, AE-H, and LBH100A, AE models are designed for high-performance video broadcasting applications. They come equipped with advanced compression technologies, facilitating efficient transmission of high-quality video even in bandwidth-limited environments. Notably, the LBH100A, AE-P includes additional power options, enhancing operational flexibility for mobile applications.

On the other hand, the LBH110A series, comprising the LBH110A, AE-P and LBH110A, AE-H, builds upon the foundation set by the LBH100A models, featuring enhanced processing capabilities and superior audio handling. These units are optimized for scenarios where sound quality is as critical as video quality, making them ideal for live events, presentations, and complex media installations.

A defining characteristic of the LBH series is the user-friendly interface, which allows for easy configuration and monitoring. With intuitive controls and clear feedback mechanisms, operators can manage their systems effectively, reducing the learning curve typically associated with professional AV equipment.

Furthermore, the series incorporates advanced error correction and signal management technologies to ensure reliable performance under various conditions. With features like auto-detection of audio and video formats, the LBH series simplifies operation while maintaining high fidelity in signal performance.

Overall, the Black Box LBH100A and LBH110A series stand out for their reliability, versatility, and advanced technologies. They cater to the needs of broadcasters, event coordinators, and anyone involved in high-stakes audiovisual production, making them a top choice in the competitive AV marketplace.
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