Fiber Loopbacks
For Pakistani procurement and engineering teams, the specification provides a practical basis for checking compatibility before production is requested. The fiber loopback range brings port testing down to a single insertion: duplex LC and SC modules for single-mode optics, attenuated versions for realistic loss budgets, and multi-fiber MTP/MPO and MMC modules for parallel interfaces. For Pakistani projects, include this point in the technical enquiry and final installation checklist.
For Pakistani campus and data hall builds, make certain of the optical interface gender and fiber count against the port under test before purchase; guide pins are not to be considered field-replaceable.
Label every module with its interface, fiber count and attenuation so the right one comes out of the kit on the first try.
LC/SC Loopback Modules
LC UPC Duplex Fiber Loopback Module, OS2Duplex LC UPC loopback for OS2 single-mode transceiver and link testing.
SC UPC Duplex Fiber Loopback Module, OS2Duplex SC UPC loopback for OS2 single-mode port and link testing.
LC UPC Duplex Attenuated Fiber Loopback Module, OS2, 3dBDuplex LC UPC loopback with fixed 3dB attenuation, simulating real link loss on OS2 links.
MTP/MPO Loopback Modules
MTP 8F Male Type 1 Fiber Loopback Module, OS28F MTP male Type 1 loopback for OS2 40/100G SR4-class port testing.
MTP 16F Female Type 1 Fiber Loopback Module, OS216F MTP female Type 1 loopback for OS2 400G DR4-class port testing.
MTP 12F Female Type 1 Fiber Loopback Module, OS212F MTP female Type 1 loopback for OS2 parallel-optics port testing.
MTP 24F Female Type 1 Fiber Loopback Module, OM424F MTP female Type 1 loopback on OM4 multimode for high-radix port testing.
MTP 8F Female Type 1 Fiber Loopback Module, OS28F MTP female Type 1 loopback for OS2 40/100G SR4-class port testing.
MPO 12F Female Type 1 Attenuated Fiber Loopback Module, OS2, 3dB12F MPO female Type 1 loopback with fixed 3dB attenuation for OS2 parallel links.
MTP 12F Male Type 1 Fiber Loopback Module, OS212F MTP male Type 1 loopback for OS2 parallel-optics port testing.
MMC Loopback Modules
MMC 16F Female Type 1 Fiber Loopback Module, OS216F MMC female Type 1 loopback for OS2 MMC-interface transceiver testing.
MMC 24F Female Type 1 Fiber Loopback Module, OS224F MMC female Type 1 loopback for OS2 MMC-interface transceiver testing.
Ordering Details and Factory Support
Each loopback module is optically tested before packing and ships with its dust cap fitted. During procurement, refer to this test module by connector interface, fiber count, polish and attenuation; for other attenuation specifications, layout types or connector combinations, send the test specification with the request and the factory will make certain of the manufacturable specification. For Pakistan, a clear port or maintenance schedule helps us confirm the correct factory-built configuration before supply.
