Designed for network diagnostics, testing system configurations, and device burn-in, the INTCERA’S MTP/MPO loopback modules can form an optical link for segment by segment testing by creating a loop of signal from transmitter to receiver within one MTP/MPO plug. It is packaged in a rugged, compact housing, providing an effective way of testing the transmission capability and receiver sensitivity of network equipment, particularly for telecom and datacom requirements.