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Topic: Data communication equipment


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In the News (Thu 21 Mar 19)

  
  IBM JRD 49-4/5 | Challenges of data center thermal management
The data center consisted of 40 racks of data processing (DP) equipment, with front-to-back cooling, which were placed in rows in an alternating hot aisle/cold aisle arrangement located in the center of the floor with four CRAC units at the perimeter of the 12.1-m-wide by 13.4-m-long room.
As in [1], the total chilled air provided to the data center by the CRAC units was varied to 80%, 100%, and 120% of the DP rack flow rate, but it was distributed in three configurations to both the cold and hot aisles.
Since data centers typically require an additional 30% to 50% of the data processing energy for cooling, it may be possible to save a large amount of energy in the thousands of data centers around the world.
www.research.ibm.com /journal/rd/494/schmidt.html   (7324 words)

  
 Connecting apparatus for plural channel digital communication network - Patent 5333132
The SDLC frame of data is generated in bytes at the data output bus of microcontroller 100 and then transmitted to the first input bus 111 of selector 120 via latches 110, and then to the input of serializer 160.
The data sent on each B channel all begin with the same pattern: the one corresponding to the channel which was the first assigned to the calling terminal equipment.
Data which are transmitted through the B1 channel and which are extracted from storage 580 are transmitted via OR gate 790 to the data terminating equipment connected to the terminal adapter at 64 kbps.
www.freepatentsonline.com /5333132.html   (7729 words)

  
 Data Communication Equipment from FOLDOC   (Site not responding. Last check: 2007-09-21)
, hardware> (DCE) The devices and connections of a communications network that connect the communication circuit between the data source and destination (the Data Terminal Equipment or DTE).
DCE and DTE are usually connected by an EIA-232 serial line.
It is necessary to distinguish these two types of device because their connectors must be wired differently if a "straight-through" cable (pin 1 to pin 1, pin 2 to pin 2 etc.) is to be used.
foldoc.org /?Data+Communication+Equipment   (171 words)

  
 Chapter 5 Page 1 - Telecommunications Handbook for Transportation Professionals
Before discussing actual communication circuit types it is necessary to look at some of the basic elements of circuits, and then understand their use as part of a traffic signal or freeway management system.
The modem converts the binary one/zero data protocol of a computer (or other data device) to a protocol that can be carried via a specific medium (11).
The RS232 communication protocol used by the 170 controller would have to be converted to a light wave signal for transmission for transmission via the fiber.
ops.fhwa.dot.gov /publications/telecomm_handbook/chapter5_01.htm   (3329 words)

  
 RS-232 Serial Communication Overview by Quatech
Typically DTE is defined as the communication source, and DCE is defined as the device that provides a communication channel between two DTE-type devices.
In order for DCE and DTE devices to communicate with each other, two wires must be used--one for transmission and the other for reception--and both devices must not use the same wire for the same purpose.
DCD: Data Carrier Detect--Used by a DCE to indicate to the DTE that it has received a carrier signal from the modem and that real data is being transmitted.
www.quatech.com /support/comm-over-rs-232.php   (878 words)

  
 Dataradio - Trusted Wireless Data
Data Communication Equipment, DCE This designation defines the direction (input or output) of the various RS-232 interface signals.
Data Operated Transmit, DOX A mode of operation in which transmit begins as soon as data is presented to the RS-232 port.
Data Terminal Equipment, DTE DTE includes terminals, computers, etc. DTE is designed to interface with DCE (Data Communications Equipment).
www.dataradio.com /terms.html   (1686 words)

  
 Networking and Communication Equipment from GlobalSpec
Equipment and software used in the representation, transfer, interpretation and processing of data among persons, places, and machines.
Communication Devices (1005 companies) - Communications devices, equipment, and systems transmit data in electronic form using either cabling or radio signals.
Communication equipment and software are used in the representation, transfer, interpretation and processing of data among persons, places, and machines.
communication-equipment.globalspec.com   (500 words)

  
 Data Communications -  David Pieris Information Technologies Ltd
We are committed to providing you with a data communication solution which will not only meet your IT requirements, but will also take into consideration any future expansion plans of your organisation, and gearing the system for upgradeability accordingly.
We are able to achieve this through our commitment to detail and the task at hand, whereby we involve ourselves in the analysis, design and implementation stages which ensure you of a custom made solution consisting of the best possible combination of speed, functionality, reliability, security and scalability.
Thereafter the information gathered is encapsulated and brainstormed before arriving at the total solution, where we address the entire communication equipment, data links, enhanced features, configuration of communication equipment, installation and many more value added services, where the customer will look at a single point of contact for all their communication requirements.
www.dpmce.com /inside/solutions/datacom.htm   (1242 words)

  
 Data Communication Equipment   (Site not responding. Last check: 2007-09-21)
, hardware> (DCE) The devices and connections of a communications network that connect the communication circuit between the data source and destination (the Data Terminal Equipment or DTE).
DCE and DTE are usually connected by an EIA-232 serial line.
DCE should have a female connector and should transmit on pin two and receive on pin three.
www.cacs.louisiana.edu /~mgr/404/burks/foldoc/43/28.htm   (160 words)

  
 Using Bluetooth to build a wireless data logger for your industrial application | Industrial Control Designline
The current consumption of the data logger circuit is measured at 16mA, and the average current consumption of the BlueGiga module is specified as 44.7mA.
The data stream is made up of eight control bits that select the input channel, the input range and the power mode, and 16 subsequent bits that contain the output data.
Before any data is sent, both ends set their RTS lines (as they are both free to send and receive data).
www.industrialcontroldesignline.com /howto/199000432   (2212 words)

  
 11. Data Communication Network (cont'd)   (Site not responding. Last check: 2007-09-21)
Medium: The communications stream through which the data is being transmitted.
DCE: The interface between the Source & the Medium, and the Medium & the Receiver is called the DCE (Data Communication Equipment) and is a physical piece of equipment.
DTE: Data Terminal Equipment is the Telecommunication name given to the Source and Receiver's equipment.
www.techbooksforfree.com /intro_to_data_com/page28.html   (55 words)

  
 Electrical Surge Protectors
Any piece of equipment can be considered as having a circle around it which can be broken in two ways; through the power line or through the communication line (i.e., telephone line, coaxial line, RS232, RS 422, RS485, RS423, and 4-20 mA current loop cables).
Steps should be taken to identify the type of DC communication equipment that needs protection and to find the best kind of surge protection for particular piece of equipment.
Communication line surge protection has been overlooked for a long time and cannot be ignored any longer.
www.citelprotection.com /english/citel_english/tech_article.htm   (1727 words)

  
 What is DCE? - a definition from Whatis.com - see also: Data Communication Equipment, Distributed Computing Environment
DCE is typically used in a larger network of computing systems that include different size servers scattered geographically.
Much of DCE setup requires the preparation of distributed directories so that DCE applications and related data can be located when they are being used.
DCE was developed by the Open Software Foundation (OSF) using software technologies contributed by some of its member companies.
searchnetworking.techtarget.com /sDefinition/0,,sid7_gci211906,00.html   (332 words)

  
 Monitor Solutions Data Logger Communication Equipment   (Site not responding. Last check: 2007-09-21)
Send by the DCE as a reply on the RTS after a delay in ms, which gives the DCEs enough time to energize their circuits and synchronize on basic modulation patterns.
Originated by the DCE indicating that it is basically operating (power on, and in functional mode).
A signal from the DCE to the DTE that there is an incomming call (telephone is ringing).
www.monitorsolutions.net /rs232pinout.htm   (589 words)

  
 Primer on Premises Data Communication
Within the premises data communications setting there are data producing and using devices which need to be connected in order to support the modern automated office, factory or campus.
These equipments such as terminals, computers and printers are considered as a class separate from equipment used to transport or communicate data such as modems, line drivers and multiplexers.
When two data equipment units are to be connected together and the distance separating them is beyond the maximum specified for their common interface you may resort to extended low capacity cable.
www.telebyteusa.com /primer/full.htm   (9051 words)

  
 Serialtest Serial RS-232, RS-485, RS232 & RS485 Protocol Analyzer and Packet Sniffer
Serialtest Async captures and analyzes data bytes, control signals (modem leads), and data communication protocol information—all the information required to troubleshoot data errors, protocol problems, control signal problems, byte errors, and timing problems.
Data is decoded at the frame, byte and bit levels, thus enabling users to rapidly detect and isolate even the most minute and intermittent communication protocol related problems associated with data communication products, applications, and networks.
Spy mode, included with Serialtest Async, is a software-only component that monitors asynchronous (async) serial data communication traffic to/from a PC’s internal serial port or modem at speeds up to 921.6 Kbps.
www.fte.com /products/Serialtest-01.asp   (749 words)

  
 Safeguarding Data Communications Equipment
No matter what application you're dealing with, today's data communications equipment is vulnerable to surges and transients.
To protect your equipment from transients and surges through the data line, first determine the electrical specifications of the equipment you want to protect.
The current ratings of TVSS devices for data lines, such as RS485, 4mA to 20mA loops, and telemetry equipment, is no greater than 200mA.
powerquality.com /mag/power_safeguarding_data_communications/index.html   (1193 words)

  
 Data Maintenance -- Division of Telecom   (Site not responding. Last check: 2007-09-21)
All data communication problems should be reported to the NCC Data Repair Help Desk at (217) 524-4784 or (800) 366-8768.
Troubleshooting is performed from the NCC, using sophisticated diagnostic equipment connected to all node sites in the state network.
Several vendors are located on-site at the NCC to expedite the troubleshooting and equipment performance process.
www.state.il.us /cms/telecom/products/Main/data.htm   (357 words)

  
 Data Communication Equipment
A modem is the most common kind of DCE.
Before data can be transmited over a modem, the DTR (Data Terminal Ready) signal must be active.
DCE should have a female connector and should transmit on pin two and receive on pin three.
burks.bton.ac.uk /burks/foldoc/43/28.htm   (160 words)

  
 Serialtest ComProbe: Serial Data Analyzer & Protocol Sniffer - Overview
It also transmits data bytes, strings, and files, which enables users to simulate a "live" operating environment.
Data is decoded at the frame, byte and
The protocol analyzer enables shorter and less costly development intervals for data communication equipment and applications, faster and more efficient data network installations, and improved mean-time-to-repair following equipment and network outages.
www.fte.com /products/Serialtest-Sync-01.asp   (483 words)

  
 Full-duplex split-speed data communication unit for remote DTE (US4597073)
The disclosed data communication equipment (DCE) provides full-duplex, split-speed data communication over 2-wire dial-up telephone circuits, typically between a host processor and data terminal equipment (DTE).
A communications processor provides buffering and control functions, and implements split-speed data communication in accordance with the high-speed and low-speed communication protocols.
In addition, the communication processor provides data compression for the high-speed channel, and error checking and retransmission for both the high speed and low speed channels.
www.delphion.com /details?pn10=US04597073   (515 words)

  
 Offshore Technology - Westermo - Data Communication Equipment For Harsh Industrial Applications   (Site not responding. Last check: 2007-09-21)
Westermo is a supplier of high quality data communication equipment designed for harsh industrial applications.
Galvanic isolation protects your equipment from damage, transient protection saves the modem, gold plated connectors and long life components gives the products a long life and for the user a trouble free installation with a minimum of maintenance.
Fibre optic modems are often used in data communication systems to bridge long distances at high data rates.
www.offshore-technology.com /contractors/communications/westermo   (843 words)

  
 ] Material Handling Data Communication Equipment [
Infrared technology is the perfered method of communication for wireless data communication in plants and warehouses.
It is used to transmit data between computers, lift trucks, terminals, bar code readers and electronic instruments.
Infrared communication is very fast, reliable, and secure undisturbed by IC engines, electric motors, steel structures and RF noise pollution.
www.pmh-co.com /datacomm.html   (157 words)

  
 Data Center Solutions: Compare Datacenter Solutions from leading manufacturers
From managing a single data center to several geographically disperse data centers, 42U's Sales Engineers can help you design a datacenter management solution to securely access and control all of your servers and devices.
Custom built to specifications, these premium quality Data Cabinets and 19 Inch Server Racks are built to securely handle all your server and communication equipment needs.
This article details the most important considerations to keep in mind when determining which server rack would be best for your data center needs.
www.42u.com /datacenter-solutions.htm   (445 words)

  
 Hitachi kokusai Electric Inc.:PHS data communication equipment for factories
This equipment is designed to be connected to equipment equipped with an RS232C interface to make data communications wireless.
Connect a PHS modem to your serial communications equipment and connect the base station for data transfer to the LAN, thus building a communications infrastructure.
Use this communications infrastructure to establish communications between the serial communications equipment and the information management server.
www.h-kokusai.com /global/products/wireless/localarea/phs/index.html   (170 words)

  
 Data communication equipment
At last numerous problems of high-rate data linking via ordinary dedicated lines have chances to be solved.
Besides the hardware has comparable data rate and reliability as competitive models but it makes installation easier than those models.
The high-rate data communication equipment was awarded by Diploma of SibTelecom-97 exhibition, Golden medal of SibTelecom-98 and Big Golden medal of SibComputer-99
www.granch.ru /english/sbni/sb_indx.htm   (307 words)

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