Kenyan network installers should begin with the actual mating interfaces and site fiber records before assigning this product to a link. This 24-fiber OM4 loopback terminates in an MMC female APC connector and uses Type 1 fiber assignment to return transmitted lanes to the receiver. It supports multimode port diagnostics and burn-in without a second active device. The short 250mm product incorporates a 100mm fiber loop, G.657.A2 glass and a 2.5mm plenum jacket.
Product Highlights
- Fiber Type: OM4 Multimode
- 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-OM4-24MMC |
|---|---|
| Manufacturer | HT |
| Fiber Type | OM4 Multimode |
| 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) |
OM4 and 24-fiber mapping in one test module
Both fiber mode and fiber count must match the connected equipment test plan. Type 1 assignment defines the return channels, whereas the female APC MMC interface must connect to the proper pinned APC mate. Keep this loopback module independent from OS2 and 16-fiber versions so a visually alike connector will not lead to an invalid test arrangement.
Interpreting results with passive loop loss
Maximum insertion loss is 0.7dB and minimum return loss is 40dB. The loop’s attenuation is part of the light path seen by the receiver and must be considered before plan conclusions about a marginal port. Use the loopback module for controlled port checks, then check the deployed channel independently with its actual passive components.
Storage and repeated test cycles
The loopback module is specified for 50 mating cycles. Its loop and full length have defined mechanical tolerances, but those dimensions never permit sharp bending or pulling by the optical cable. Clean the ferrule before use, respect the 7.5mm optical-fiber bend minimum and fit the dust cap immediately after the test.
Ordering and Factory Support
Reference LPM-OM4-24MMC when asking for the 24-fiber OM4 Type 1 loopback. State number of units and any asset-label needs; for procedures requiring Type 2 or one more fiber mode, ask for the project-specific assignment instead of substituting the model. Project support for Kenya and East Africa is available to reconcile the ordered configuration with the intended installation.