
This 24 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: OM4 50/125μm
- Fiber Connector: MTP® Female, UPC
- Insertion Loss: MM (BIF)≤1.2dB
- Return Loss: MM≥25dB
- Insert-Pull Test: 50times, IL Change<0.5dB
- Factory tested, individually packed
Specifications
| Part Number | LPM-OM4-24MTP |
|---|---|
| Manufacturer | HT |
| Fiber Type | OM4 50/125μm |
| Fiber Connector | MTP® Female, UPC |
| Insertion Loss | MM (BIF)≤1.2dB |
| Return Loss | MM≥25dB |
| 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-OM4-24MTP in your enquiry. Our sales team can also advise on polarity, gender and jacket choices if your project documentation is not final yet.
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
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.
Quality and Testing
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.



