16 Fibers MMC Female Type 1 Fiber Loopback Module, OS2
For Pakistani procurement and engineering teams, the specification provides a practical basis for checking compatibility before production is requested. The LPM-SM-16MMC is a 16-fiber OS2 loopback with an MMC female APC interface and Type 1 fiber layout. It returns transmitted optical lanes to the receive side for port testing and burn-in. The terminated assembly uses G.657.A2 fiber in a 2.5mm plenum cable, with a 100mm loop and 250mm entire length for convenient handling in laboratory and field diagnostics.
Product Highlights
- Fiber Type: OS2 9/125μm
- Fiber Connector: MMC Female, APC
- Glass Fiber: G.657.A2
- Cable Jacket: Plenum (OFNP)
- Fiber Count: 16 Fibers
- Fiber Mapping: Type 1
Specifications
| Part Number | LPM-SM-16MMC |
|---|---|
| Manufacturer | HT |
| Fiber Type | OS2 9/125μm |
| Fiber Connector | MMC Female, APC |
| Glass Fiber | G.657.A2 |
| Cable Jacket | Plenum (OFNP) |
| Fiber Count | 16 Fibers |
| Fiber Mapping | Type 1 |
| Insertion loss | ≤0.7dB |
| Return Loss | ≥60dB |
| 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) |
Type 1 mapping for sixteen-fiber tests
The loopback’s internal wiring determines which transmit lanes return to which receive lanes. Type 1 must be aligned with the installed equipment test plan; selecting a module by connector shape alone is not to be considered sufficient. The female MMC interface requires the suitable pinned mate, and APC polish must be consistent with the port being tested.
Optical values to consider during diagnosis
Maximum insertion loss is 0.7dB and minimum return loss is 60dB. Because the loopback adds passive attenuation to the test route, review transmitter power and receiver thresholds before interpreting results. It can help isolate port behavior and support burn-in, but it does not by itself validate the loss, polarity or end-face condition of the external cabling link.
Handling a short precision assembly
The 100mm loop has a +0/-25mm tolerance and the 250mm entire length has a +50/-0mm tolerance. Mating durability is specified at 50 cycles. Avoid tight bends below the 7.5mm optical-fiber minimum, examine the MMC ferrule before every use and store this test module dust-capped between test sessions.
Ordering and Factory Support
Specify LPM-SM-16MMC for the 16-fiber OS2 Type 1 setup. State number of units and any identification identifiers project-specific for a test kit; if your process uses a distinct layout or fiber mode, make certain of that specification before purchase. For Pakistan, a clear port or maintenance schedule helps us confirm the correct factory-built configuration before supply.
