JDSU Test-Um Validator NT955 Network LAN Ethernet Certifier Cable Tester

30-Day Warranty, includes latest 3.0.4 Plan-Um Cable layout software

Comes with new compatible batteries( non-jdsu) 

The Validator-NT (NT905) Ethernet Speed Certifier uses Speed and Performance criteria to test and certify Ethernet network cables against IEEE802.3 specifications up to 1 Gigabit. It also tests critical noise and delay (Skew) measurements to assure that the respective cable runs will perform to their maximum capability. Breakthrough technology has made Speed and Performance Certification possible. It is the most up-to-date way of seeing the physical condition of the wiring and how a specific cable run will handle data flow on Ethernet speeds, 10 Megabit, 100 Megabit and Gigabit. Validator-NT also boasts a full selection of active network features designed to report cable performance and verify connectivity to network devices. These features include the ability to negotiate with network components and discover both the speed and configuration of connected equipment.

Ethernet Speed Certification Speed and Performance Certification uses digital technology centered on the latest advances in Gigabit Ethernet Transceivers. These new highly integrated chips are capable of testing for noise in the network, faults in the cabling wiring and even generating live data packets that stress the cables to make sure they are able to support the equipment connected to them. This is the heart of the Validator-NT. To do Speed and Performance Certification Validator-NT measures three specific levels of cable and connector conditions. Unless all three of these levels are tested it is impossible to accurately determine a cable run’s capability. 1. Measure TIA 568 Interconnect Specifications such as Opens, Shorts, Miswires, Split Pairs and Reversals. The distance to faults and length of cable runs are accurately pinpointed with the use of both TDR and capacitance length measurement techniques. The Validator-NT measures length up to a maximum of 1500 feet or 457 meters. 2. Measure Pertinent Parameters of Noise and propagation delay. NEXT, Return Loss, Attenuation, Amplitude and other noise factors are tested using Signal to Noise Ratio measurements. SKEW is measured using TDR (Time Domain Reflectometry) to insure acceptable signal time delay differences between pairs for Gigabit use. 3. Conduct a Bit Error Rate Test. BERT sends actual data packets down specified cable runs at defined data rates and quantities. Random code data is generated and checked for errors at the maximum throughput of the link, full duplex.

JDSU NT955 Series Active Network Features Validator-NT includes three functional test areas that are designed to report cable performance and verify connectivity to network devices. They are Port Discovery, Ping, and Hub Flash. Port Discovery identifies telephone or network devices connected to the other end of the jack or cable. A Ping Test verifies connectivity to resources on or off the network and IP addresses. The Ping Test will simultaneously Ping up to seven different IP addresses and can be run in DHCP or manual addressing modes. Cisco Discovery Protocol detects messages broadcast by Cisco bridges and routers over the network to inform each other of their existence. Hub Flash sends an intermittent link signal to flash the link status light on Ethernet equipment. Plan-UmdSoftware If the heart of Validator-NT is a Gigabit Ethernet Transceiver then the soul of the Validator-NT is the powerful planning and reporting software included in your test kit, Plan-Umd. Plan-Umd software ties the superior testing capability of the Validator-NT with a simple to use software tool that helps organize the cable information and test results associated with your jobs. Plan-Umd will help set up each job, define the scope of the job, aid in testing the individual cable runs accurately and produce an End of Job report that will tie in all the expectations of the installer and the customer. The Network Tools feature in Plan-Umd allows you to quickly and easily create a topological representation of your physical network, annotate each piece of equipment, and characterize the connection methods. This feature is completely separate from the layout of the cable runs and the Cable Test Schedule. It provides a quick way to see the architecture of your network and a way to document moves, adds, and changes in an organized and effective manner. Validator-NT and the Plan-Umd software combine to close the loop on cable/network installations so that both the network user and the network installer can be confident of the physical properties of specific cable runs