A 12 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: MPO Female, APC
- Attenuation: 3dB
- Attenuation Tolerance: ±0.7dB
- Insertion Loss: SM (G657.A2) ≤1.5dB
- Factory tested, individually packed
Specifications
| 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) |
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
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.
Built to Your Spec
As a factory we can modify almost every detail of this product: length, jacket material and color, polarity, gender, breakout geometry, labeling and packaging. Non-standard variants are routine work for us, not a special project.
Logistics
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.
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.