This 8 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.
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-8MTP |
|---|---|
| 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
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.
Using the Loopback Correctly
This module is passive and needs no power or configuration. Insert it into the cage until it latches, and the port can then be exercised with the switch or server diagnostics. The optical path is measured at production, and the housing protects the internal fiber from daily toolkit wear.
Ordering Information
Please reference LPM-SM-8MTP in your enquiry. Our sales team can also advise on polarity, gender and jacket choices if your project documentation is not final yet.
Quality and Testing
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.
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.
How We Pack
Products are packed in anti-static or PE bags with connector dust caps fitted, then boxed in sturdy export cartons. Custom labels, barcodes and carton markings are available on request.