
This 12 loopback module provides a compact optical self test for parallel ports. It routes transmit lanes back to the receive lanes inside a rugged housing, so you can verify port function, run burn-in tests and diagnose link faults without a second device.
| Part Number | LPM-SM-12MPO |
|---|---|
| Manufacturer | HT |
| Fiber Type | OS2 9/125μm |
| Fiber Connector | MPO Female, APC |
| Attenuation | 3dB |
| Attenuation Tolerance | ±0.7dB |
| Insertion Loss | SM (G657.A2) ≤1.5dB |
| Return Loss | ≥60dB |
| Insert-Pull Test | 50 times, IL Change<0.6dB |
| Test Wavelength | 1260/1620nm |
| Housing Material | PC |
| Dimensions (HxWxD) | 16x8.5x54mm |
| Operating Temperature | -40 to 75°C (-40 to 167°F) |
| Storage Temperature | -40 to 75°C (-40 to 167°F) |
Loopbacks are used daily in manufacturing test, data center commissioning and RMA diagnosis. This module gives a fast pass/fail indication for multi-fiber ports without needing a second transceiver or a traffic generator.
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-12MPO in your enquiry. Our sales team can also advise on polarity, gender and jacket choices if your project documentation is not final yet.
We have manufactured fiber optic assemblies since 1995. MPO and MTP cabling is one of our core lines: fiber counts from 8 to 144, single mode and multimode, UPC and APC polish, trunk, jumper, harness and breakout formats. Send your drawing and we turn it into a ready to install assembly.
We dispatch worldwide by international courier, with air and sea freight options for bulk orders. Goods can be sent collect on your courier account, and documentation for customs clearance is provided with every shipment.
We do not ship untested product. Each unit is measured on calibrated equipment for optical performance and visually inspected for end face quality before packing. Batch traceability is maintained so any field issue can be tracked back to production.