LAN Cable Tester Performs Continuity Test

2007-11-16 16:23:35

( Business )



If you are working on cable installation or troubleshooting the physical link of your networking facility, you must have network test equipment handy. One of the rules for troubleshooting a network is to test a circuit with a LAN cable tester. Bad cabling and connectors are the most common hardware-related causes of network problems, and the easiest to fix. You can also use a LAN cable tester for testing the cables in your network after you have looked for things such as loose connectors, improperly tightened cables, incorrect terminations, broken wires, and excessive bends.

A handheld LAN cable tester is a device generally used to test an installed cable link. The basic LAN cable tester only performs a simple DC continuity test, and checks for undesired connections. If you happen to accidentally exchange one of the wires with another pair, this LAN cable tester will not detect the problem. The DC connectivity of the split pair may test fine, but the cable would fail if tested for AC signal balance. A more sophisticated LAN cable tester would be able to detect a split-pair fault.

One type of LAN cable tester consists of a main tester and a remote unit. The two components communicate across the cable as they conduct a wire map test and a continuity test. Most of these LAN cable testers can easily detect all of the common connection errors, such as opens, shorts, reversed wires, and crossed connections.

Another type of LAN cable tester is used to perform a number of different types of tests on assembled twisted-pair or coaxial cables. This type of network test equipment utilizes two modular jacks. Each end of the cable is plugged in, and as the technician activates the tester, LED indicators will light up as the unit tests, one by one, the continuity of each wire in the cable.


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