PXM/LXM - MPO optical loss test set (OLTS)

Full-featured MPO-12 power meter and light source with the industry’s fastest test speeds.

Spec sheet User manual

Key Features

4-inch color touchscreen

Native MPO-12 connector on devices

Leading FasTesT™ performance: test MPO-12 cables at 2 wavelengths in just 1 second

Dual wavelength on light source

Insertion loss measurement

Polarity type validation

In-line visual fault locator (VFL) for fiber tracing on LXM

Comprehensive results combined on one pag

Test, certify and deliver reliable networks—faster than ever.

Tier-1 certification is essential for ensuring compliance, network performance, and future scalability, yet it remains a complex and time-consuming process.

The pro version of PXM/LXM streamlines the process by providing test results in 1 second for duplex and multi-fiber connectors.

Supporting various connector types, this unique instrument enables compliance with one-cord reference methods—increasing accuracy and simplifying test processes.

Moreover, it also provides reporting and certification to industry standards.

The fastest path to Tier-1 duplex and multi-fiber certification

Released in 2025, the pro version of PXM/LXM is more than a cutting-edge tool; it’s a game changer for Tier-1 fiber certification in data center networks. It handles the challenges of both duplex and multi-fiber testing, so it’s little wonder that the PXM/LXM sets new standards for speed and versatility. Its intuitive design helps empower contractors and data center technicians of all experience levels handling any size network to deliver accurate and reliable Tier-1 certifications with confidence.

The fastest

Measure loss, length, and polarity on duplex and multi-fiber links at two wavelengths in just 1 second.

Multi-connector compatibility

Switch within seconds between duplex and multi-fiber testing with patented Click-Out adapters, compatible with duplex MDC, SN, LC as well as MPO and SYSTIMAX MTP.

First-time-right polarity

The industry's only tester capable of detecting duplex and multi-fiber polarity issues hidden in trunk cabling, ensuring fibers are correctly connected before the network goes live.

Standards compliance

EXFO’s Click-Out adapters enable one-cord referencing for duplex and multi-fiber cabling, eliminating adapter cords to match pinned and unpinned gender types ensuring compliance with TIA, ISO, and IEC standards.

Duplex or multi-fiber pass/fail results all on one page

View the most important results together on one screen—complete jobs faster and transition to the next one with confidence.

Global pass/fail status and pass/fail per fiber with length measurement
Insertion loss per wavelength
Live simultaneous reading of all fibers for faster testing and troubleshooting
Polarity type with graphical representation

Switch between duplex and multi-fiber while ensuring standards compliance

EXFO’s patented Click-Out adapters allow quick, tool-free switching between duplex and multi-fiber testing. They support a wide range of connector types, including duplex MDC, SN, LC, as well as MPO, and SYSTIMAX MTP.

Enabling simplified one-cord referencing for standards-compliant certification, it delivers fast, versatile, and reliable testing for high-density fiber networks.

Testing beyond 12 fibers,
in just 1 second

In addition to native duplex and base-8/12 fiber testing, PXM/LXM enables testing of 16 or 24 fibers in just 1 second, using dual kits or a loopback method.

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Test faster. Test more.

Being the world’s n.1 provider of fiber optic test solutions means we build in features that make testing more intuitive and efficient.

Large, hybrid contactless connector: PXM accommodates both APC and UPC connectors to support multimode and singlemode link testing. Large core detector allows the PXM to give precise measurements with low uncertainty.

Generate reports with FastReporter: PXM power meter measurements for power or loss can be processed directly by FastReporter.

Smartphone-grade touchscreen: PXM and LXM have integrated high‑quality capacitive color touchscreens designed to be visible in full sun or dark areas, from any angle.