Categories (x) > Datacom (x)

Results 141-150 of 346 << < 11 12 13 14 15 > >> 

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

Black Box Explains...Electronic vs. manual switches.

What’s the difference between electronic and manual switches? Are the benefits of electronic switches worth the price increase over manual switches?

As you might imagine, the inner workings of manual switches... more/see it noware far simpler than those of electronic switches. When you turn the dial of a manual switch, internal connections are physically moved. This is great for less complex applications, but it can cause voltage spikes that can damage particularly sensitive equipment such as laser printers.

Because electronic switches do their switching with solid-state components, you have more control in advanced applications. For example, our AC-powered, code-operated, and fallback switches offer numerous options for out-of-band management of critical network resources. They give you the remote control your operation may need. You can control your high-end applications and sensitive equipment via computer, modem, or even touch-tone phone—a convenience simply not available with manual switches. collapse

  • Manual... 
  • POTS to Fiber Converter User Manual
    User Manual for the TE160A-R2, TE161A-R2, TE162A-R2, TE163A-R2, TE164A-R2, and TE165A-R2 (1)

Product Data Sheets (pdf)...USB Hubs

  • Manual... 
  • USB Ultimate Extender over CATX UTP (4-Port) Quick Start Guide
    Quick Start Guide (QSG) for the IC400A
  • Quick Start Guide... 
  • Industrial Opto-Isolated RS-422/485 Repeater Quick Start Guide
    Quick Start Guide for the ICD202A (Version 2)

Product Data Sheets (pdf)...Industrial Modem 288

Product Data Sheets (pdf)...PQ-7

Product Data Sheets (pdf)...Rackmountable DB25 Manual Switches

Results 141-150 of 346 << < 11 12 13 14 15 > >> 


Delivering superior technical support is our highest priority. Depending on the products or services we provide for you, please visit your appropriate support area.


You have added this item to your cart.

Important message about your cart:

You requested more of "" than the currently available. The quantity has been changed to them maximum quantity available. View your cart.

Black Box 1-800-316-7107 Black Box Network Services