SC Interchangeable Adapters for the CertiFiber Pro OLTS Power Meter input port. Changing the input port to the same connector types as the cable connector under test to enables One-Cord Reference Method in compliance to TIA-526-14-C and IEC 61280-4-1 for Multimode and TIA-526-7-A and IEC 61280-4-2 for Singlemode.