A 16 loopback for testing QSFP, QSFP-DD and OSFP parallel interfaces. Plug it into the port under test and the optical signal loops back internally, making it ideal for production burn-in, RMA checks and field diagnostics.

Product Highlights

• Fiber Type: OS2 9/125μm
• Fiber Connector: MTP® Female, APC
• Insertion Loss: SM (G657.A2) ≤0.7dB
• Return Loss: SM≥50dB
• Insert-Pull Test: 50times, IL Change<0.5dB
• Factory tested, individually packed

Keep this loopback in the toolkit for commissioning and maintenance. It is used to exercise ports during burn-in, to isolate whether a fault sits in the transceiver, the cabling or the far end, and to confirm repairs before a link goes back into service.

Loopback testing isolates faults quickly: if the link comes up with the loopback installed, the port and transceiver are healthy and the problem lies in the cabling or far end. If it does not, the fault is local. This simple test saves hours of guesswork during commissioning.

Please reference LPM-SM-16MTP in your enquiry. Our sales team can also advise on polarity, gender and jacket choices if your project documentation is not final yet.

Every MPO/MTP assembly leaving our factory is 100% tested for insertion loss and return loss, with end face geometry checks on the multi-fiber ferrules. Controlled polishing keeps the loss budget stable across the whole batch, which matters when several mated pairs sit in one link.

Each assembly is coiled, capped and sealed in an individual bag, then packed into foam lined export cartons. Test reports can be attached per unit or per batch, and carton marks follow your shipping instructions.

Most orders leave our facility within a few working days. Courier, air freight and sea freight are all available, and we are happy to hand goods to your nominated forwarder in China.