16 Fibers MMC Female Type 1 Fiber Loopback Module, OS2

Malaysian upgrade projects can use this configuration where its interface and fiber map align with both the installed cabling and the new hardware. 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 finished product uses G.657.A2 fiber in a 2.5mm plenum cable, with a 100mm loop and 250mm complete 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

Type 1 mapping for sixteen-fiber tests

The loopback’s internal wiring determines which transmit lanes return to which receive lanes. Type 1 must agree with the connected hardware test plan; selecting a module by connector shape alone is not equivalent to sufficient. The female MMC interface requires the right 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 path, meaning that inspect transmitter power and receiver thresholds before interpreting results. It might help isolate port behavior and support burn-in, but it is not designed to validate the loss, polarity or end-face condition of the external cabling channel.

Handling a short precision assembly

The 100mm loop has a +0/-25mm tolerance and the 250mm complete length has a +50/-0mm tolerance. Mating durability is specified at 50 cycles. Avoid tight bends below the 7.5mm optical-fiber minimum, inspect the MMC ferrule before every use and store the diagnostic module dust-capped between test sessions.

Ordering and Factory Support

Request LPM-SM-16MMC for the 16-fiber OS2 Type 1 configuration. State unit count and any identification labels appropriate for a test kit; if your procedure uses a different assignment or fiber mode, determine that need before confirming the purchase. For Malaysian upgrades, our team can compare the requested build with the existing environment before production begins.