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N6158A CMMB Measurement Application

Product Status: Discontinued | Currently Supported
This product is no longer available

No replacement found for this product.

Key Features & Specifications

Signal analysis

  • Supports CMMB standard
  • Transmitter RF measurement, analog baseband measurements with PXA BBIQ or MXA BBIQ hardware
  • One-button measurements with pass/fail per the standard and auto detection
  • Runs inside PXA, MXA, and EXA signal analyzers


  • Power measurement: channel power, shoulder attenuation, ACP, CCDF, OBW, SEM
  • Modulation accuracy measurement: constellation, MER/EVM (MER RMS, MER by subcarriers, MER by data, continuous pilot, scattered pilot, and MER verus timeslot), frequency error, amplitude error, phase error, quadrature error, amplitude imbalance
  • Channel frequency response, channel impulse response, and spectral flatness
  • Auto detection or manual settings of CMMB signal; provides advanced settings like equalization switch, demod symbols per slot, out-of-band filtering, and clock rate

Performance (hardware dependent)

  • Power accuracy: up to ±0.19 dB (95th percentile)
  • Shoulder attenuation dynamic range: up to 98.4 dB (103.7 dB typical)
  • MER floor: up to 48 dB (1 to 39 timeslots 16QAM with EQ off)
  • Analysis bandwidth: PXA/MXA up to 160 MHz; EXA up to 40 MHz

Other features

  • License key upgradeable
  • Fixed and transportable license available
  • SCPI remote user interface


The CMMB measurement application is one of more than 25 measurement applications in the Keysight X-Series, an evolutionary approach to signal analysis that spans instrumentation, measurements, and software, transforming the X-Series signal analyzers into standards-based transmitter testers. The CMMB application provides fast, one-button standard-based power and modulation analysis capabilities to help your design, evaluation, and manufacturing of CMMB modulators, transmitters, amplifiers, tuners, and gap-fillers/repeaters. Using the optional analog baseband IQ inputs in the MXA signal analyzer, the CMMB application provides the flexibility to measure signal quality and modulation accuracy with RF input or analog IQ input.

RF transmitters, modulators, and components testing

  • One-button measurement helps improve speed with standard presets and auto detection
  • Multiple modulation quality measurements help test the DUT’s full performance
  • Advanced settings help R&D engineers with troubleshooting
  • Remote SCPI commands increase the manufacturing test efficiency

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