16 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-16MMC is a 16-fiber OS2 loopback with an MMC female APC interface and Type 1 fiber mapping. It returns transmitted optical lanes to the receive side for port testing and burn-in. The supplied assembly uses G.657.A2 fiber in a 2.5mm plenum cable, with a 100mm loop and 250mm overall 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 should be matched to the equipment being used test plan; selecting a module by connector shape alone cannot be regarded as sufficient. The female MMC interface requires the appropriate pinned mate, and APC polish should 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, evaluate transmitter power and receiver thresholds before interpreting results. It can help isolate port behavior and support burn-in, but it does not automatically 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 overall 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 each use and store the supplied module dust-capped between test sessions.
Ordering and Factory Support
Order LPM-SM-16MMC for the 16-fiber OS2 Type 1 setup. State number of units and any identification identifiers requested for a test kit; if your process uses a distinct mapping or fiber mode, ensure that specification before requesting a quotation. For Tanzanian deliveries, the order details should include any site identification needed by the installation team.
