What is a loopback test?
A loopback test is a hardware or software method which feeds a received signal or data back to the sender. It is used as an aid in debugging physical connection problems.
Fiber optic transceiver loopback test
Fiber optic transceiver is the fundamental part in any fiber optic communication network equipment. Its function is exactly the same as your computer’s Ethernet Card. (although almost all modern computers integrate it on the motherboard, not as a separate PCI card anymore)
Fiber optic transceiver has two ports, a transmitter port and a receiver port. The transmitter port sends out laser signal to a linked transceiver and the receiver port receives laser signal from the other transceiver.
On fiber optic transceiver manufacturing floors and in R
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