Cabletron Systems STH-22, STHI-44, 42, 24 manual Environmental Requirements, Safety, Physical

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Environmental Requirements

under all conditions of line at full load. The minimum and maximum load current from each output is shown below.

Table 2-5. Power Supply Loads

Output

Min. Load

Max. Load

Max Power

 

 

 

 

 

 

 

 

+5 Volts

0.50 Amps

3.0 Amps

15 Watts

 

 

 

 

+12 Volts

0.05 Amps

1.0 Amps

12 Watts

 

 

 

 

2.6.4Environmental Requirements

Operating Temperature:

+5° to +50° C

Non-operating Temperature:

-30° to +90° C

Operating Humidity:

5 to 95% (non-condensing)

2.6.5Safety

This equipment is designed in accordance with UL478, UL910, NEC 725- 2(b), CSA, IEC, TUV, VDE Class A, and meets FCC Part 15, Class A limits.

Warning: It is the responsibility of the person who sells the system to which the STH will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions.

2.6.6 Physical

 

Dimensions:

2.8H x 17.0W x 8.0D inches

 

(7.2 x 43.6 x 20.5 cm)

Predicted MTBF:

STH-22/42: 653,987 hours

(mean time between failure)

STH-24/44: 653,972 hours

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Contents Stackable Token Ring HUB USER’S Guide Page DOC Notice FCC NoticeCabletron Software Program License Cabletron SYSTEMS, INC Program License AgreementExclusion of Warranty Disclaimer of Liability United States Government Restricted Rights Contents Troubleshooting InstallationIntroduction Using This ManualSTH Overview HubSTACK STH OverviewRing Speed Fault Protection Lobe Port and Multiple Ring Out Port ConfigurationsLanview LEDs Lanview LEDsDaughter Board Upgrade Kit Automatic Beacon Recovery ProcessAutomatic Beacon Recovery Process Active CircuitryRelated Manuals Related ManualsImproved Protection from Beaconing No Connection RedundancyDAISY-CHAIN MAU Configuration Getting Help Getting HelpGeneral Considerations Requirements & SpecificationsMaximum Number of Stations on a Ring CrosstalkInstallation Recommendations TemperatureGeneral Considerations UTP Cabling Specifications Cable SpecificationsCable Specifications UTP Cable CategoriesNext UTP Cable CategoriesUTP Lobe Lengths STP Cabling SpecificationsUTP Lobe Lengths STP Cable Categories STP Cable CategoriesSTP Lobe Lengths TCU Specifications TCU SpecificationsOperating Specifications Operating SpecificationsRing Speed Ring Sequence Power Supply RequirementsRing Sequence Environmental Requirements SafetyEnvironmental Requirements PhysicalInstalling the STH InstallationUnpacking the STH Rack Mount or Wall Mount HardwareAdding the STH to a Stack Adding the STH to a StackAttaching the Strain Relief Bracket Attaching the Strain Relief BracketRack-Mounting the STH Wall-Mounting the STH Wall-Mounting the STHWall-Mounting the STH Free-Standing Installation Free-Standing InstallationConnecting the STH to the Power Source Connecting the STH to the Power SourceAttaching Network Cabling to TCU Ports Finishing the Installation Finishing the InstallationLanview LED Signals TroubleshootingTrouble Resolution Loss Of Power Trouble ResolutionFailure to Link on Enabled Port Ring Speed Fault

42, 24, STHI-44, STH-22 specifications

Cabletron Systems was a pioneer in networking technology, and its STH series, particularly the STH-22 and STHI-44, 24, and 42 models, stand out in the history of networking equipment. These devices were designed for high-performance network management and offered a multitude of features that helped organizations manage their networking resources efficiently.

The STH-22 was a compact and efficient network switch, primarily developed to serve small to medium-sized businesses. One of its main features was its ability to support multiple user connections while offering low latency and high throughput. The STH-22 utilized advanced packet-switching technology to ensure data could move rapidly across the network, enhancing overall communication and productivity.

On the other hand, the STHI-44 model addressed the needs of larger enterprises. It featured advanced routing protocols and could handle a greater number of simultaneous connections, making it ideal for environments with high data traffic. The STHI-44 also incorporated redundancy features to minimize downtime, a vital requirement for businesses that relied heavily on continuous network availability.

The STH-24 and STH-42 models focused on versatility and scalability, catering to a broad range of networking needs. Both models provided extensive support for various networking protocols and featured robust hardware for enhanced durability. The STH-24 was designed for offices requiring mid-range capabilities, while the STH-42 targeted enterprises with more demanding networking requirements.

All STH series devices were built with ease of management in mind. They included user-friendly interfaces that allowed IT personnel to monitor traffic, configure network settings, and troubleshoot issues in real-time. Additionally, the devices supported SNMP (Simple Network Management Protocol) for seamless integration into existing network management systems.

Another defining characteristic of the Cabletron STH series was its commitment to security. These devices came equipped with features that permitted administrators to set access controls and monitor network activity, thereby safeguarding against unauthorized access and potential threats.

In summary, Cabletron Systems' STH-22, STHI-44, STH-24, and STH-42 models represent a significant advancement in networking technology. With their diverse features, high-performance capabilities, and user-centric design, they have served a critical role in optimizing network resources, ensuring businesses were equipped to handle increasing connectivity demands.