Power of the Rosenberger PIM Site Analyzer

Why Continuous Wave PIM Testing is Transforming On-Site Network Performance

As mobile networks continue to evolve—with the acceleration of LTE, 5G, co-location, and the natural aging of infrastructure—Passive Intermodulation (PIM) has become one of the most persistent threats to network performance. Detecting it accurately is no longer a luxury; it’s a requirement.

CW Testing: Real-World Conditions, Real-World Accuracy

Traditional pulse-based PIM testing can miss low-level or intermittent PIM sources due to inconsistent power delivery. Rosenberger’s Continuous Wave (CW) PIM Site Testing solves this by generating uninterrupted power, closely replicating the real operating conditions of a Base Transceiver Station (BTS).
This continuous loading—using ≥ 2×20 W—allows the system to reveal faults that pulse testers simply cannot detect.

The Power of the Rosenberger PIM Site Analyzer

The Rosenberger solution is designed to bring precision, efficiency, and future-proofing to field teams. At the centre of the system is a master unit paired with interchangeable, band-specific filter units. Each filter unit has the same form factor, allowing engineers to swap, for example, a 900 MHz filter for an 1800 MHz filter instantly — with no on-site calibration required.
This truly plug-and-play design supports operations across 600 to 2700 MHz, including upcoming bands.

Key Capabilities

  • No on-site calibration required
  • <0.3 m PIM Distance-to-Fault accuracy
  • Future-proof design, including support for 600 MHz and IM2 testing
  • Built-in WiFi for remote control via an optional Android tablet
  • VSWR/Return Loss capability for complete site validation
  • Antenna isolation measurements for comprehensive RF health checks

Why This Matters

As operators push for higher bandwidth and increased network reliability, the need for accurate PIM detection has intensified. External PIM sources, aging hardware, and multi-band antenna systems all increase the complexity of field diagnostics. CW testing ensures no hidden faults remain undetected.

Rosenberger’s CW-based approach allows field engineers to identify issues early, mitigate risks faster, and keep network performance at peak quality.

👉 To learn how Maser Communications can support your PIM testing strategy, get in touch with our team.