For Nigerian deployments, this product should be evaluated as part of the complete network path, including its connectors, mapping and acceptance values. The LPM-SM-24MMC loopback provides a 24-fiber OS2 optical self-test path through one MMC female APC connector. Type 1 allocation returns transmit lanes to the receive side for diagnostics and burn-in. Its 24-fiber MMC interface, 100mm loop and 250mm complete length make it suitable for controlled test environments where a compact multi-fiber loop is needed.
Product Highlights
- Fiber Type: OS2 9/125μm
- Fiber Connector: MMC Female, APC
- Glass Fiber: G.657.A2
- Cable Jacket: Plenum (OFNP)
- Fiber Count: 24 Fibers
- Fiber Mapping: Type 1
Specifications
| Part Number | LPM-SM-24MMC |
|---|---|
| Manufacturer | HT |
| Fiber Type | OS2 9/125μm |
| Fiber Connector | MMC Female, APC |
| Glass Fiber | G.657.A2 |
| Cable Jacket | Plenum (OFNP) |
| Fiber Count | 24 Fibers |
| Fiber Mapping | Type 1 |
| Insertion loss | ≤0.7dB |
| Return Loss | ≥40dB |
| Cable Outside Diameter (OD) | 2.5mm |
| Mating Durability | 50 cycles |
| Loop Length | 100mm (+0/-25mm) |
| Overall Length | 250mm (+50/-0mm) |
| Min. Bend Radius (Optical Fiber) | 7.5mm |
| Min. Bend Radius (Fiber Cable) | 20/10D (Dynamic/Static) |
| Operation temperature | 0 to 60°C (32 to 140°F) |
| Storage Temperature | -20 to 75°C (-4 to 167°F) |
A 24-fiber loop is not a 16-fiber substitute
The added fibers change the ferrule assignment and the lanes returned by the test module. Establish that the two the port and test procedure are engineered for 24 fibers and Type 1 wiring. The female MMC APC connector needs a compatible pinned mate; do not assume that an in mechanical terms similar MMC interface guarantees the same optical allocation.
Return loss and receiver conditions
This OS2 24-fiber model has 0.7dB maximum insertion loss and at least 40dB return loss. Supply its attenuation when assessing receiver operating conditions during the test. The test module might help validate port electronics and diagnostic readings, but external link behaviour must still be measured with the intended trunk, adapters and hardware cords.
Care of the loop and connector
The loop measures 100mm with +0/-25mm tolerance and the whole assembly 250mm with +50/-0mm tolerance. Mating durability is 50 cycles. Observe the 7.5mm fiber bend minimum, avoid crushing the 2.5mm cable and inspect the multi-fiber end face before each insertion to prevent debris from being transferred to the port.
Ordering and Factory Support
Order LPM-SM-24MMC for 24-fiber OS2 Type 1 testing, and define quantity. If the test module will be shared across several benches, request durable identification so it remains distinguishable from 16-fiber and OM4 loopbacks. For Nigerian orders, our team can check the requirement before coordinating manufacture and international delivery.
