Real-time spectrum analysis added to EMI receiver capabilities

August 05, 2015 // By Graham Prophet
Keysight Technologies has added real-time spectrum analysis (RTSA) as an option for its standards-compliant MXE EMI receiver. Adding RTSA to an MXE enables test labs to observe and diagnose transient and wideband emissions during electromagnetic compatibility (EMC) compliance and precompliance testing.

In RTSA mode, the MXE can provide real-time analysis bandwidth up to 85 MHz below 3.6 GHz and up to 40 MHz above 3.6 GHz, ensuring image-free, over-the-air diagnostics that enable faster, easier analysis of emissions. RTSA offers 100% probability of capture for signals with durations greater than 3.7 µsec when viewing with an 85 MHz span.

With RTSA, engineers can more easily see and understand high-speed transient signals that are difficult to capture with traditional spectrum or signal analysers. This is especially useful in applications such as radar, automotive and wireless communications that often experience fast-moving, short-duration emissions.

Frequency mask trigger (FMT) capability is also included with RTSA, allowing users to confidently trigger on signals with durations as short as 17.4 µsec. Time-qualified triggering capability further enhances FMT by simplifying the task of finding pulse outliers or triggering on specific communications bursts.

RTSA is an upgradeable option on new and existing MXE EMI receivers as well as UXA, PXA and MXA X-Series signal analysers. Adding RTSA enables engineers to see, capture and understand the most elusive signals, known or unknown. For deeper analysis, engineers can combine a real-time X-Series signal analyser with Keysight 89600 VSA software to create a solution that enables thorough characterisation of complex signals.

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