Networks are everywhere, and even as home Wi-Fi routers proliferate, there is still a tremendous need for wired networks. Wired networks are more robust, faster, and often less expensive than wireless ones. Best of all, wired networks never have to worry about interference because the neighbors are on the same channel. The one issue with wired networks is that when they stop working, it can be difficult to troubleshoot. This is where a comes in. This simple device is vital for checking cable continuity to ensure that the signal is getting through, and eliminating cable connectivity issues when troubleshooting network problems.
Network Cable Tester Basics
In its simplest form, a network cable tester relies on the simple fact that network cables transmit data electronically. Because electricity requires a continuous physical connection, any breaks in the wiring inside the network cable prevent it from functioning. The other problem cables can face is that of cross-wiring, where some of the internal wires make the wrong connections, causing a short-circuit.
Network Cables
Most network cable testers can test two basic types of cable: coaxial and .. Coaxial cable, the kind used for cable TV, uses a single shielded conductor that runs down the center of the cable. Twisted pair relies on multiple pairs of wire wrapped together. Both kinds of twisted pair use similar connectors, but the one for an is larger than that for telephone. Coaxial cable normally uses the same kind of barrel connectors found in cable TV installations
Using a Network Cable Tester
Never connect a cable tester to a live circuit. Always remove the cable from both the computer and router or modem before connecting the tester. The majority of testers consist of two main components: the tester itself and the remote. Most testers have either two or three connectors:for Ethernet, for telephone cable, and for .. The smaller remote has two connectors, one each for RJ-11 and RJ-45. If the network cable tester supports coaxial cable networking, it comes with a .. Users simply plug the network cable into the appropriate port on the cable tester itself, and then connect the remote to the other end of the cable.
Running a Network Cable Test
Once the cable is connected to both the tester and the remote, users should turn the tester on to send a signal up the cable, which lights up the LEDs on both the tester and remote. It not only works as a continuity tester, but more importantly, shows the user exactly what kind of network cable they have and indicates any potential problem, leaving no need for guesswork. The tester distinguishes between and,, as well as showing both shorts and open circuits. Note that this is only necessary for twisted pair, such as ,, as a coaxial network cable only needs a continuity tester.
Reading a Network Cable Tester
The standard network cable tester has a row of 10 LEDs on the body and 9 LEDs on the remote to match up with the standard connector pinouts. The tester sends a signal down each pair in turn, lighting the LEDs up. The order in which they either light or do not light indicates the cable type and whether or not it is working.
Cable Condition | Reading |
Straight Through | Light in same sequence on both units |
Crossover | Light in reverse order on remote |
Open Circuit | No lights on either main unit or remote |
Short Circuit | Lights on main unit but not remote |
| Only first four LEDs light and ground |
| Only first six LEDs light and ground |
Ethernet Cable | Eight LEDs plus ground all light in sequence |
Coaxial Cable | Bottom LED and LED on terminator light |
This system provides a quick and easy reference for any technician to see exactly what is going on with any given network cable. The last two LEDs on the main unit are for testing ground and coaxial cable. The remote has a corresponding LED for ground testing, but not for coaxial cable.
How to Buy Network Cable Testers
Going on Dentik Network Solutions and Integrated Services is an excellent way to buy both and any replacement network cables you may need. The site combines all the benefits of dealing one-on-one with individual sellers with those of a nationwide marketplace. A network cable tester can make all the difference if you have a complicated network and need to solve problems quickly. It lets you know if the cable is good before you use it, or figure out exactly where the problem lies in an existing installation. They are too easy to use not to have.
Portable Internet Ethernet Network LAN Cable Tester Tool Kit Phone Telephone Line Wire Tracker Detector for RJ11 RJ12 RJ45 Cat5
- Switch on the power on the main tester.
- Test of the RJ45 RJ11 Cat-5 Cat-6 cable:if all the cables work ,the lights will become green from NO.1&2 to NO.7&8 sequently.if any light is not on or turns on unsequently,the cables are broken.
- Automatically scan mode, rapidly testing, the streamline shape is in accordance with the design of somatology
- Durable design, working well even in construction location
- Super handy device ensures your good mood
- Cable Tester for RJ11, RJ45, 10/100 Base-T and telephone cable ... etc
- Automatic efficient scan for the miss wiring, disorder cable, open and short circuit
- Grounding test available
- Remotely test cable up to 1000 ft in length ( remote kit included )
- 9 LEDs to indicate which wire whether open or not on both remote and master unit
- Powered by DC 9V reduplicated battery (not included)
- Protective power switch for low power consumption
- High quality soft leather case provides more secure protection
PACKAGE INCLUDES
1 x Network Cable Tester
1 x User Manual