
Our 12 loopback module is a simple, reliable tool for validating multi-fiber ports before go-live. The internal fiber path is factory measured, and the housing is small enough to keep in every field toolkit.
Product Highlights
- Fiber Type: OS2 9/125μm
- Fiber Connector: MTP® Female, APC
- Insertion Loss: SM (G657.A2)≤1.5dB
- Return Loss: SM>50dB
- Insert-Pull Test: 50times, IL Change<0.5dB
- Factory tested, individually packed
Specifications
| Part Number | LPM-SM-12MTP |
|---|---|
| Manufacturer | HT |
| Fiber Type | OS2 9/125μm |
| Fiber Connector | MTP® Female, APC |
| Insertion Loss | SM (G657.A2)≤1.5dB |
| Return Loss | SM>50dB |
| Insert-Pull Test | 50times, IL Change<0.5dB |
| Size | 80mm*10mm |
| Operation Temperature | -40 to 75°C (-40 to 167°F) |
| Housing Material | PC |
Applications
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.
Using the Loopback Correctly
A loopback contains no electronics: it simply connects transmit fibers to receive fibers inside the housing. The port under test sees its own signal returned, so link indicators and diagnostics behave as if a far-end device were connected. Always check the required attenuation for high power interfaces.
Ordering Information
Ordering is simple: send us LPM-SM-12MTP and your required lengths and quantities, and we return a factory quote the same working day. Small trial orders are welcome before you commit to a full project rollout.
How We Pack
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.
Built to Your Spec
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.
Logistics
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.



