For Nigerian deployments, this product should be evaluated as part of the complete network path, including its connectors, mapping and acceptance values. This 16-fiber OM4 MMC loopback combines a female APC connector with Type 1 allocation for multimode optical port diagnostics. It loops transmit paths back to the receive side without requiring a remote device. G.657.A2 glass, a 100mm internal loop and a 250mm complete assembly provide a compact tool for production, commissioning and fault-isolation work.
Product Highlights
- Fiber Type: OM4 50/125μm
- Fiber Connector: MMC Female, APC
- Glass Fiber: G.657.A2
- Cable Jacket: Plenum (OFNP)
- Fiber Count: 16 Fibers
- Fiber Mapping: Type 1
Specifications
| Part Number | LPM-OM4-16MMC |
|---|---|
| Manufacturer | HT |
| Fiber Type | OM4 50/125μm |
| Fiber Connector | MMC Female, APC |
| Glass Fiber | G.657.A2 |
| Cable Jacket | Plenum (OFNP) |
| Fiber Count | 16 Fibers |
| Fiber Mapping | Type 1 |
| Insertion loss | ≤0.7dB |
| Return Loss | ≥60dB |
| 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) |
Matching the module to a multimode port
Use this loopback where the test setup explicitly calls for 16-fiber OM4 and Type 1 allocation. The MMC female APC interface must mate with the matching pinned APC port. Although OM4 and OS2 versions might share a connector family, their fiber characteristics differ, which means the test module must be labeled and stored distinctly in the test kit.
Using insertion loss in the test setup
The passive loop introduces up to 0.7dB insertion loss and has at least 60dB return loss. Confirm whether that attenuation is correct for the transmitter and receiver under test. A successful loop might support port-function checks and burn-in; a failed loop still requires systematic investigation of the test module, connector cleanliness, allocation and active electronics.
Repeatable handling and cleanliness
The completed product is rated for 50 mating cycles and has a 2.5mm OFNP cable with a 7.5mm minimum optical-fiber bend radius. Do not use the short loop as a pull handle. Clean and inspect the ferrule before insertion, cap it after testing and keep the 100mm loop free from sharp edges or tightly weighted cable bundles.
Ordering and Factory Support
Define LPM-OM4-16MMC for the 16-fiber OM4 Type 1 version, with quantity and needed test-kit labels. Supply the network equipment test allocation if there is any uncertainty, which means an alternative Type 2 project-specific module can readily be discussed instead. For Nigerian orders, our team can check the requirement before coordinating manufacture and international delivery.
