24 Fibers MMC Female Type 1 Fiber24 Fibers MMC Female Type 1 Fiber Loopback Module, OS2
Singapore high-density designs should assess this item together with panel access, cable routing and the complete optical loss allowance. The LPM-SM-24MMC loopback features a 24-fiber OS2 optical self-test channel through one MMC female APC connector. Type 1 map returns transmit lanes to the receive side for diagnostics and burn-in. Its 24-fiber MMC interface, 100mm loop and 250mm total length make it suitable for controlled test environments where a compact multi-fiber loop is correct.
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 extra fibers change the ferrule mapping and the lanes returned by the loopback assembly. Review that both the port and test method are optimized for 24 fibers and Type 1 wiring. The female MMC APC connector needs a compatible pinned mate; do not attempt to assume that a mechanically analogous MMC interface guarantees the corresponding optical map.
Return loss and receiver conditions
This OS2 24-fiber variant has 0.7dB maximum insertion loss and at least 40dB return loss. Give its attenuation when assessing receiver operating conditions during the test. The loopback assembly may help make sure of port electronics and diagnostic readings, but external channel performance must still be measured with the intended trunk, adapters and equipment leads.
Care of the loop and connector
The loop measures 100mm with +0/-25mm tolerance and the full product 250mm with +50/-0mm tolerance. Mating durability is 50 cycles. Preserve the 7.5mm fiber bend minimum, avoid crushing the 2.5mm cable and check 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 document quantity. If the loopback assembly will be shared across multiple benches, ask for durable identification so it remains distinguishable from 16-fiber and OM4 loopbacks. Singapore and regional project orders can be reviewed for interface compatibility, packing details and delivery coordination.
