generators can be used on twisted pair wiring (telecom, datacom, etc.), single conductors, coax cables, de-energized AC wiring, etc. All 77 Series Tone Generators provide the four basic functions of tone signal, continuity testing, talk battery supply and line polarity confirmation.  (less)

com uma antena para recepo e transmisso de dados e tem como principal vantagem o facto de no possuir fios e permitir que pessoas que vivam em zonas rurais possam aceder Internet com dbitos elevados. Esta obra tem como objectivo estudar todo o conceito de tecnologia WiMAX e as suas caractersticas mais importantes e realizar uma anlise sria e profunda do planeamento duma rede baseada nesta tecnologia, recorrendo para isso ferramenta de simulao ATDI ICS Telecom.  (less)

Expandable With Optional Bp24v33 External Battery Packs. 2200va / 1700 Watt Power Handling Capability Supports A Variety Of Networking, Telecom And Other Sensitive Electronic Applications. Includes 6 Protected Outlets. Supports Remote Monitoring Of Ups And Site Power Conditions Via Built-in Rs-232 Enabled Monitoring Port, Plus Standard Ups Monitoring Via 2 Built In Contact Closure Ports. Includes Poweralert Ups Monitoring And Unattended Shutdown Software With Complete Cabling. Supports Snmp With Optional External Snmpwebsolo Adapter. Built-in Audible Alarm And Front Panel Leds Indicate Line Power, Battery Power, Battery Charge Level, Load Level, Plus Voltage Regulation Status. Ne *Additional Information: smart2200net Line Interactive Ups Offers Battery Derived Ac Output During Power Outages, Voltage Regulation During Brownouts And Overvoltages, Plus Network-grade Ac Surge Suppression 2200va / 1700 Watt Power Handling Capability Supports A Variety Of Networking, Telecom And Other Sensitive Electronic Devices large Internal Batteries Offer Runtimes Of 27 Minutes At Half Load (1100va / 850 Watts) And 11 Minutes At Full Load (2200va / 1700 Watts) runtime Is Further Expandable With Optional External Bp24v33 Battery Packs (output Va Is De-rated As External Battery Packs Are Added, See Specifications) automatic Voltage Regulation (avr) Circuits Maintain 120v Nominal Output Over An Input Voltage Range Of 87-140v includes 6 Fully Protected Nema 5-15r Outlets With 2 Single Outlet Load Banks That Can Be Individually Powered Off And Back On Again Via Software Interface poweralert Ups Monitoring And Unattended Shutdown Software E [938615] UPC: 0037332032041 UNSPC: 39121011 22L x 13.8W x 16.4H 86.6 LB 2.59 Cubes  (less)

input channels with individual level controls are provided, so connecting sound sources is simple thanks to the available XLR, 1/4-inch and RCA connectors. Additionally, the ZM125 features five selectable speaker zone outputs.The ZM125 is ideal for distributing music and announcements throughout different rooms and the dedicated paging microphone input allows you to setup a distant paging station (for a hostess in a restaurant, for example). There's even an on-board chime, with four selectable tones, to alert the listeners of an upcoming page.For businesses that want to improve their customers' telephone experience, a MOH (Music On Hold) facility is also included. When interfaced with a business telecom system, music or valuable pre-recorded announcements are heard while customers are on hold.To control the overall tonal response of the sound system, the ZM series employs a seven-band graphic equalizer. A master level control and five segment level meters allow you to set a clean signal at the correct volume. For added flexibility you can add the optional Samson TCM-3 sound module with FM tuner and CD player that can play both standard CDs and CDs with MP3s.The ZM125 can be table-top or mounted in a standard 19-inch equipment rack using the included rackmount ears. The sleek black finish matches just about any décor, plus the steel chassis adds to its durability and reliability. Perfect for schools, restaurants, office buildings, small factories, or just about any place high quality, distributed audio is needed, the ZM125 offers excellent sound and great value. Features: 125 watts of clean power Six mic/line inputs on 1/4-inch, XLR and RCA connectors Built-in 7-band graphic equalizer Three layer priority muting system Remote microphone connection on a Euroblock terminal Built-in announcement chime with four selectable tones M.O.H. (Music On Hold) input and output Telephone paging input on a Euroblock terminal Phantom power on mic channels 1 and 2 for connecting condenser microphones Advanced amplifier protection including current limiting, over current and thermal protection Link and preamp terminals allow for expansion to an external mixer or power amplifier Advanced electric circuit design with high quality op-amps Easily configured for table-top or standard 19-inch rackmount installations Expansion bay for adding optional Samson TCM-3 music source module  (less)