Product Data Sheets (pdf)...DataSafe NEMA Outdoor Cabinet
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...ISDN Basics.
ISDN stands for Integrated Services Digital Network. It’s a high-speed digital data service provided by most phone companies. With ISDN you can transmit large amounts of data, voice, and video... more/see it nowsignals up to 128 kbps over a single phone line.
The most common (and least expensive) ISDN service is Basic Rate Interface, or BRI. It’s usually used to combine voice and data circuits over one line between small-scale ISDN sites. BRI consists of two 64-kbps B channels plus a 16-kbps D channel to support system “overhead” functions, such as signaling the telecomm switching system to initiate a call.
What makes ISDN unique is that each B channel is a separate communication circuit. That means just one ISDN line can support simultaneous two-way communication for two devices, such as a computer and a telephone or a computer and a video camera for teleconferencing.
If you need to send more data than one 64-kbps B channel can handle, ISDN also supports BONDing for inverse multiplexing. This links the two B channels into a single logical circuit that can support data rates up to 128 kbps.
ISDN lines are terminated at your location with a special RJ-45 jack. There are two main interfaces. The U interface consists of two wires (one twisted pair) and is common in North America. The S/T interface consists of four unshielded wires (two twisted pairs) and is more common outside North America. Unless you already own U-compatible ISDN phones or PCs, you’ll need a terminal adapter to make the connection.
ISDN is the perfect choice when faster data rates, lower prices, and guaranteed data integrity are required. Consider it for high-volume datacomm applications such as Internet access and on-line service, telecommuting, remote-office routing, and disaster recovery. Also consider ISDN for a high-speed backup line—because you never know when you’ll need one. collapse
- Pdf Drawing...
GigaStation2 Snap Fitting, LC, Office White PDF Drawing
PDF Drawing for FMT354-R3 (Version 1)
Product Data Sheets (pdf)...Crossover Media Converters Economy Crossover Media Converters
Product Data Sheets (pdf)...Relay/Digital I/O Cards, PCI
- Pdf Drawing...
CAT3 Jack (Red) PDF Drawing
PDF Drawing for the FMT371-R2 and FMT371-R2-25PAK (Version 1)
Black Box Explains...How computer speeds are enhanced with PCI buses and UARTs.
The Peripheral Component Interconnect (PCI®) Bus enhances both speed and throughput. The PCI Local Bus is a high-performance bus that provides a processor-independent data path between the CPU and high-speed... more/see it nowperipherals. PCI is a robust interconnect interface designed specifically to accommodate multiple high-performance peripherals for graphics, full-motion video, SCSI, and LANs.
UARTs (Universal Asynchronous Receiver/ Transmitters) are integrated circuits that convert bytes from the computer bus into serial bits for transmission. By providing surplus memory in a buffer, UARTs help your applications overcome the factors that slow down your system. collapse
T1 Fiber Mux, Multimode, 850-nm
Installation and User Guide (12/8/2013)