Customized 16/24 Fibers MMC Fiber Loopback Module
For Tanzanian site work, correct product selection should be followed by careful transport, connector inspection and retention of the fiber records. The customized LPM-MMC loopback series covers 16-fiber and 24-fiber MMC modules in OM4 or OS2, with Type 1 or Type 2 mapping. Each uses a female APC MMC interface, a 100mm nominal fiber loop and a 250mm nominal overall length. This configurable approach allows the test module to match the equipment being used’s actual lane map instead of forcing one standard loopback into every process.
Product Highlights
- Fiber Type: OS2/OM4
- Fiber Connector: MMC Female, APC
- Glass Fiber: G.657.A2
- Cable Jacket: Plenum (OFNP)
- Fiber Count: 16 Fibers/24 Fibers
- Fiber Mapping: Type 1/Type 2
Specifications
| Part Number | LPM-MMC |
|---|---|
| Manufacturer | HT |
| Fiber Type | OS2/OM4 |
| Fiber Connector | MMC Female, APC |
| Glass Fiber | G.657.A2 |
| Cable Jacket | Plenum (OFNP) |
| Fiber Count | 16 Fibers/24 Fibers |
| Fiber Mapping | Type 1/Type 2 |
| Insertion loss | ≤0.7dB |
| Return Loss | ≥60dB (16 Fibers)≥40dB (24 Fibers) |
| 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) |
Four choices that define the correct module
A useful order specifies mapping, connector interface, fiber count and fiber mode jointly. Sixteen-fiber and 24-fiber ferrules organize lanes differently, whereas Type 1 and Type 2 change the return routes. OS2 and OM4 must be specified for the intended test environment. The female APC connector remains non-pinned and requires the correct pinned mate.
Performance varies with the selected fiber count
Insertion loss is 0.7dB maximum across the series. Return loss is specified at 60dB minimum for 16-fiber versions and 40dB minimum for 24-fiber versions. G.657.A2 glass and a 2.5mm OFNP jacket are used, with 50-cycle mating durability. Ensure the final values on the specified setup’s documentation.
Building a traceable diagnostic toolkit
Custom modules should carry explicit identifiers showing mapping, fiber count and mode, not just the MMC name. This prevents accidental cross-use between comparable-looking test patch cords. Examine the end face before each session, respect the 7.5mm bend minimum and store every module capped. Loopback testing complements, rather than replaces, end-to-end link certification.
Ordering and Factory Support
Use LPM-MMC as the series reference and set out 16 or 24 fibers, OM4 or OS2, and Type 1 or Type 2 mapping. Set out number of units and labeling needs; a port-map excerpt is the most reliable way to ensure the requested loopback. For Tanzanian deliveries, the order details should include any site identification needed by the installation team.
