There are many other factors involved including cabling, connection points and other network appliances but this technique will allow you to rule out those factors and confirm the functionality of your hardware. In conclusion, a loopback test is an easy way to confirm that your current hardware is working properly. Loopback created with single fiber strand If not, further troubleshooting is necessary. If lit, the port of hardware is functioning properly. Once the ports are connected review the status of the link light. If using a loopback module the Tx and Rx ports will be connected to each other, if using a transceiver install the isolated ends of the same strand of cabling to the transmit and receive ports of the transceiver.ģ. (If testing a module with a 40km or greater reach utilize the appropriate optical attenuator).Ģ. Install transceiver or loopback module into switch. This LC Multimode OM3 50/125 Fiber Optic Loopback Testing Adapter with Case allows you to quickly and easily test or troubleshoot your fiber optic cable run. This specific loopback tester uses a MPO connector, which fastens the optic cables. Remove collar and isolate both ends of the same strand of cable How to perform and confirm a loopback test using a single strand of fiber:ġ. Fiber optics installment requires careful and meticulous handling. Creating a single strand of fiber out of a duplex cable takes a couple of extra steps.Ģ. Our loopback cable products for fiber testing are also known as adapters or plugs and this network equipment works by connecting adjacent pairs of ports. ![]() It requires a self-contained loopback module or a single strand of fiber. Fiber optic loopback modules incorprate two fiber optic connectors and they are plugged into the output and input port of the equipment respectively so that. ![]() A loopback test eliminates superfluous connections and confirms that a transceiver or port is functioning properly by connecting the transmitter and receiver of the same module.
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