Type of diagnostic test in which the transmitted signal is returned to the sending device after passing
through a Data communications Link or network. A test typically runs on a four-wire circuit. The two
transmit leads are joined to the two receive leads. A signal is then applied around the loop. This allows
a technician or built-in diagnostic circuit to compare the returned signal with the transmitted signal and
get some sense of what's wrong. Loopbacks are often done by excluding one piece of equipment after
The Timbercon EL-11-07001 SFP+ electrical loopback is used for testing SFP+ transceiver ports in host/system boards. By substituting a full-featured SFP+ transceiver, the electrical loopback provides a cost effective...
The Timbercon EL-12-07002 QSFP/QSFP+ passive electrical loopback is used for testing QSFP/QSFP+ transceiver ports in board level test. By substituting for a full-featured QSFP/QSFP+ transceiver, the electrical loopback provides...