VIAVI mORL-A1 MORL-A13456-STD-M100-MFA Single-Mode IL/RL Meter Module, 1310/1490/1550/1625 nm, FC/APC

The VIAVI MORL-A13456-STD-M100-MFA is the four-wavelength, standard (non-bidirectional) single-mode version of the mORL-A1 insertion loss and return loss meter. It provides 1310, 1490, 1550 and 1625 nm sources on 9 µm single-mode fiber with an FC/APC output and installs in a single slot of a VIAVI MAP-Series chassis as the core measurement module of the Passive Component/Connector Test (PCT) solution.

Measurement principle

Insertion loss is measured with the power meter method; launch power monitoring and depolarization technology provide 0.001 dB display resolution. Return loss is measured with time-domain technology, often called mandrel-free, which removes the need for manual terminations during setup and test and also measures DUT length. RL measurements run in parallel with IL using the same optical stimulus. According to VIAVI, the single-mode mORL-A1 delivers 80 dB of RL dynamic range and can measure jumpers as short as 70 cm in as little as 6 seconds for two wavelengths.

PCT software

The PCT application runs natively on the MAP chassis in two versions, PCT Max and PCT Lite, and offers instrument mode, script (DUT-aware) mode with a local results database, and port mapping. A full SCPI command set is available over LAN or GPIB for integration with external automation environments. PCT Control Center is a companion PC application for managing DUT definitions, report templates and serial-number batches.

System configuration

The module is often combined with MAP optical switch modules (mOSW-C1), which expand a single output up to 64 channels, and with mOPM remote power meter heads, including the mOPM-C1RHPM Remote Head Polarity Mapper for simultaneous IL, RL and polarity measurement of multifiber assemblies such as MPO. A bidirectional upgrade license is available for use with a high-directivity mOSW 2x2 switch.