Read the instructions for any product you use. While cable testers are similar, different products may have different instructions. The cable tester may have both an insertion and receiver jack on one piece, meaning you don’t need a two-piece tester. Some other testers have both options, so you can run the cable into other rooms if you want to. Make sure there is a battery in the tester before you use it. Most take a 9V battery.
It doesn’t matter which end of the cable you insert into each port. Both ends are identical.
If the tester has the TX and RX inputs on the same piece, then plug both in there. If the tester has a separate piece for the RX input, connect the cable there. If the tester has both options for the RX input, then you can choose which to use. Usually, a separate piece is for stretching the cable into another room to see if it transmits well over a distance.
Some testers may have a number of different modes or switches to choose from. Refer to the instruction manual for how to set the tester if it has multiple options. Remember when you remove the cable, press down on the notch near the plug to detach it. Don’t pull it out or you could damage the machine and cable.
Remember that the ground position won’t light up since the cable isn’t grounded, so don’t worry if that one doesn’t illuminate.
Remember that this only applies if the LAN cable is connected. If you’re using WiFi, then the problem may be with your router or modem. Confirm that your computer is signed onto the network first.
Your TV may also be connected to the router if it has an internet connection. Check behind the TV to confirm that the cable is plugged in properly.
The green light may flash. This also indicates a good connection.
LAN cables can usually bend around corners without much trouble. However, if the cable has a sharp fold, then it may have internal damage.
It may take a minute for the device to receive a connection when you plug the cable in. If it takes longer than 2 minutes, then there may be a problem with the modem. Alternatively, you could also plug the cable into another device. This will indicate if something was wrong with the first device.
