Kenyan network installers should begin with the actual mating interfaces and site fiber records before assigning this product to a link. The LPM-SM-16MMC is a 16-fiber OS2 loopback with an MMC female APC interface and Type 1 fiber assignment. It returns transmitted optical lanes to the receive side for port testing and burn-in. The cable assembly uses G.657.A2 fiber in a 2.5mm plenum cable, with a 100mm loop and 250mm full 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 match the connected equipment test plan; selecting a module by connector shape alone is never sufficient. The female MMC interface requires the proper 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 channel, examine transmitter power and receiver thresholds before interpreting results. It can help isolate port behavior and support burn-in, but it will not validate the loss, polarity or end-face condition of the external cabling path.
Handling a short precision assembly
The 100mm loop has a +0/-25mm tolerance and the 250mm full length has a +50/-0mm tolerance. Mating durability is specified at 50 cycles. Avoid tight bends below the 7.5mm optical-fiber minimum, check the MMC ferrule before each use and store the loopback module dust-capped between test sessions.
Ordering and Factory Support
Ask for LPM-SM-16MMC for the 16-fiber OS2 Type 1 arrangement. State number of units and any identification markings specified for a test kit; if your method uses a dissimilar assignment or fiber mode, check that specification prior to ordering. Project support for Kenya and East Africa is available to reconcile the ordered configuration with the intended installation.