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  • 100Mb FX Small-Form-Factor %X93plug-in%X94 connector
    Installation and User Guide (Apr-99)
 
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  • LongSpan Wireless Ethernet Extender Manual
    Manual for LS900PKA (Version 1)
 
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    User Manual for PoE Repeater (1)
 
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  • Miniature Remote Fast Ethernet Bridges
    Installation/User (Oct-06)
 
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  • DeeSel.1 Industrial Ethernet Extender User Manual
    User Manual for the LB532A-L & LB532A-R (Version 1)
 

Black Box Explains...RS-232.

RS-232, also known as RS-232C and TIA/EIA-232-E, is a group of electrical, functional, and mechanical specifications for serial interfaces between computers, terminals, and peripherals. The RS-232 standard was developed by... more/see it nowthe Electrical Industries Association (EIA), and defines requirements for connecting data communications equipment (DCE)—modems, converters, etc.—and data terminal equipment (DTE)—computers, controllers, etc.) devices. RS-232 transmits data at speeds up to 115 Kbps and over distances up to 50 feet (15.2 m).

The standard, which is functionally equivalent to ITU V.24/V.28, specifies the workings of the interface, circuitry, and connector pinning. Both sync and async binary data transmission fall under RS-232. Although RS-232 is sometimes still used to transmit data from PCs to peripheral devices, the most common uses today are for network console ports and for industrial devices.

Even though RS-232 is a “standard,” you can’t necessarily expect seamless communication between two RS-232 devices. Why? Because different devices have different circuitry or pinning, and different wires may be designated to perform different functions.

The typical RS-232 connector is DB25, but some PCs and other data communication devices have DB9 connectors and many newer devices have RJ-45 RS-232 ports. To connect 9-pin PC ports or RJ-45 to devices with 25-pin connectors, you will require a simple adapter cable. collapse

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  • 100 Mbps Compact Media Converter
    Installation and User Guide (Apr-06)
 
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    Installation and User guide (May-08)
 
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  • Remote Console Manager Quick Start Guide
    Quick Start Guide for the LES1202A, LES1203A-11G , LES1203A-M, and LES1204A (3)
 
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