Product Description: integrated link identification nLink-Ex network tester, cable diagnostics, POE detection line sequence scanning, PING, topology monitoring, port flashing, data management and other functions. 
 nLink-Ex is a company completely independently developed the first domestic network tester. A variety of network test function for the device set in one, designed for first-line network maintenance and construction and technical personnel to provide a multi-purpose, full range of tools used to help lift the network barrier and improve the efficiency of network construction. 
 Features 
 nLink intelligent network tester, function covers multiple detection from the physical layer, link layer, network layer ISO / OSI reference model. One in your hands, you can quickly locate network faults and measure the link quality. 
 Cable diagnostics 
 When the network such as cable break (open) and twisted-pair line error short (short circuit), as well as other failures, network communications will be interrupted. Network administrator nLink TDR (time domain reflectometer) cable diagnostic function, you can quickly diagnosis and analysis of reliable Ethernet network cable to connect. And connection status, and precise positioning point of failure location. 
 Constituted by the Cat5/Cat5E twisted pair network environment, the potential failure of the cable include: 
 Open: lack of continuity between the twisted pair at both ends of the connector. 
 Short-circuit: two or more wires to short circuit. 
 Cross-pair: UTP is not properly connected at the end. For example, in one end connected to the connector 4 and 5, on the other end connected to the connector 7 and 8. 
 Reverse: two wires in the twisted pair connection of the opposite polarity. For example, a 3 wire on one side connected to the connector 1, on the other side connected to the connector 2, and two wires connected to the connector 2 and connector middle. 
 Incorrect termination: the cable termination impedance equal to 100 ohms. Typical Category 5 (Cat 5) cable impedance of 100 ohms, terminated at each end of the cable must also be 100 ohms to prevent waveform reflections and potential data errors. 
 nLink network diagnostic functions using a single-ended connection to quickly identify a cable fault state, and locate the fault location, without the need for the remote adapter and other personnel with great savings in network maintenance costs. This function can detect up to 200 meters of twisted pair cable. 
 Link state recognition 
 Network Tester to provide nLink link rate for the 10/100/1000M the adaptive network port, and supports MDI / MDIX auto-flip through the port LED indicators to quickly identify the network port speed and duplex status. 
 POE test 
 nLink able to simulate different power levels of PD devices, access to the PSE supply voltage waveform, according to the different devices to detect and draw power from the PSE output voltage waveform on the screen. nLink can simulate different levels of power of the intelligent Ethernet by electrical PD (Power Device) device to detect Power over Ethernet PSE (Power Sourcing Equipment) availability and performance metrics, including the type of equipment supply, the available output power level support of supply standards, as well as the supply voltage. 
 nLink Power over Ethernet test not only the support of IEEE802.3af (3.84 ~ 12.95W four grades) standards, but also supports the latest IEEE802.3at (the maximum available power to 25.5W) standard has been widely used in the industry. 
 PING 
 nLink itself is an IP terminal, network (IP) layer connectivity test, which provides a PING and multi-point topology detection of two functions, network management and maintenance personnel in most cases, without carrying a laptop point of failure can be tested in order to troubleshoot. Can be extended Ping the ICMP connectivity test, according to user-defined information, repeat the specified IP address connectivity and reliability testing. 
 Multi-point topology monitoring 
 This feature is designed for the reliability of detection of the complex network environment, on in nLink tester can detect up to 32 IP nodes connected state. Interruption or failure to set the IP node quickly issued a warning prompt. This function is also used for network engineers in the debugging of multi-point network equipment, IP node as an independent reference to detect network availability. 
 Port scanning 
 In a network environment using a longer time, often wear or loss of identity of the patch panel side, the technical personnel in troubleshooting, it is difficult to determine the failure of the IP terminal connected to the switch which port. Often require repeated investigation can be distinguished. nLink port flashing light of this situation by setting the port state, shut down and lit in accordance with a certain frequency, management personnel at a glance to determine the remote port corresponding to the switch port connected to switch port LED indicators. 
 Line sequence scanning 
 nLink twisted pair cable sequence scanning function, graphical display of twisted pair cable end-to-end cable sequence. 
 Check to the distal end of the twisted pair connection to meet the EIA / TIA 568 stranded standards. 
 Data Management 
 when nLink-EX cable diagnosis, POE, and PING test results can be saved, and through the embedded Web server to view the saved test results of each test results can be stored in 300 information fully meet the needs of large and medium-sized networks. 
 Electrical Specification Table 
 Network access media: 10BASE-T, 100BASE-TX, 1000BASE-T (IEEE 802.3) 
 Physical access to the media: UTP Cat5/Cat5e; EIA/TIA568A/B 
 Network Protocol Support: IPv4, ICMP, DHCP, HTTP, and other 
 Cable test: line length, opens, shorts, direct-attached configuration identification 
 Length measurement of the blind (the minimum cable length): 1.0M; Max: 200M 
 Length measurement accuracy: ≤ 1.0M 
 POE Test: Voltage: 0 ~-60V the DC 
 Standard: of IEEE802.3af, IEEE803.3at well as the non-standard POE power supply equipment 
 PSE interface: Mid-span and End-Span 
 The PSE / PD and cable interface: Alternative A (1, 2, 3, 6 signal lines) and Alternative B (4,5,7,8-free line) 
 Power classification: classification of the available power 
 Of Class0 0.44 to 12.95W 
 Class1 0.44 to 3.84W 
 Class2 3.84 to 6.49W 
 Class3 6.49 to 12.95W 
 Of class4 12.95 to to 25.5W (IEEE802.3at) 
 Port: RJ45 network test port, RJ45 loop wiring diagram port 
 Application port: Mini-USB 
 User Interface: 1.8 "LCD TFT display with a resolution of 160 × 128 pixels; 
 Link to refers LEDx6; standby indicator LED; function operation button x 7 
 Power supply: 2 x AA alkaline batteries or 2 x AA NiCd / NiMH rechargeable batteries 
 Dimensions: 103.5 x 66 x 29mm 
 Weight: 90 grams