24 Fibers MMC Female Type 1 Fiber Loopback Module, OS2
For Tanzanian site work, correct product selection should be followed by careful transport, connector inspection and retention of the fiber records. The LPM-SM-24MMC loopback offers a 24-fiber OS2 optical self-test route through one MMC female APC connector. Type 1 mapping returns transmit lanes to the receive side for diagnostics and burn-in. Its 24-fiber MMC interface, 100mm loop and 250mm overall length make it suitable for controlled test environments where a compact multi-fiber loop is requested.
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 additional fibers change the ferrule map and the lanes returned by the supplied module. Ensure that both the port and test process are intended to serve 24 fibers and Type 1 wiring. The female MMC APC connector needs a compatible pinned mate; never try to assume that a mechanically comparable MMC interface guarantees the identical optical mapping.
Return loss and receiver conditions
This OS2 24-fiber version has 0.7dB maximum insertion loss and at least 40dB return loss. Set out its attenuation when assessing receiver operating conditions during the test. The supplied module can help cross-check port electronics and diagnostic readings, but external connection operation must still be measured with the intended trunk, adapters and equipment patch cords.
Care of the loop and connector
The loop measures 100mm with +0/-25mm tolerance and the complete unit 250mm with +50/-0mm tolerance. Mating durability is 50 cycles. Respect the 7.5mm fiber bend minimum, avoid crushing the 2.5mm cable and examine the multi-fiber end face before every 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 set out number of units. If the supplied module will be shared across various benches, order durable identification so it remains distinguishable from 16-fiber and OM4 loopbacks. For Tanzanian deliveries, the order details should include any site identification needed by the installation team.
