24 Fibers MMC Female Type 1 Fiber Loopback Module, OM4
For Tanzanian site work, correct product selection should be followed by careful transport, connector inspection and retention of the fiber records. This 24-fiber OM4 loopback terminates in an MMC female APC connector and uses Type 1 fiber mapping to return transmitted lanes to the receiver. It supports multimode port diagnostics and burn-in without a second active device. The short 250mm unit 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 should be matched to the equipment being used test plan. Type 1 mapping defines the return routes, whereas the female APC MMC interface must connect to the appropriate pinned APC mate. Keep this loopback separate from OS2 and 16-fiber versions so a visually comparable connector does not automatically lead to an invalid test setup.
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 end-to-end path seen by the receiver and must be considered before diagram conclusions about a marginal port. Use the supplied module for controlled port checks, then cross-check the finished channel independently with its actual passive components.
Storage and repeated test cycles
The supplied module is specified for 50 mating cycles. Its loop and overall length have defined mechanical tolerances, but those dimensions never try to permit sharp bending or pulling by the supplied 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 purchasing the 24-fiber OM4 Type 1 loopback. State number of units and any asset-label needs; for procedures requiring Type 2 or another fiber mode, ask for the customized mapping instead of substituting the product configuration. For Tanzanian deliveries, the order details should include any site identification needed by the installation team.
