16 Fibers MMC Female Type 1 Fiber16 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-16MMC is a 16-fiber OS2 loopback with an MMC female APC interface and Type 1 fiber map. It returns transmitted optical lanes to the receive side for port testing and burn-in. This optical assembly uses G.657.A2 fiber in a 2.5mm plenum cable, with a 100mm loop and 250mm total 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 correspond to the active hardware test plan; selecting a module by connector shape alone must not be treated as 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. The loopback adds passive attenuation to the test channel; consequently, assess transmitter power and receiver thresholds before interpreting results. It may help isolate port behavior and support burn-in, but it will not by itself 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 total 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 assembly dust-capped between test sessions.
Ordering and Factory Support
Ask for LPM-SM-16MMC for the 16-fiber OS2 Type 1 arrangement. State quantity and any identification markings correct for a test kit; if your method uses a differing map or fiber mode, review that requirement before submitting the order. Singapore and regional project orders can be reviewed for interface compatibility, packing details and delivery coordination.
