R&S®FSL-K7 AM/FM/φM measurement demodulator

  • Overview

Key facts

  • Modulation signal versus time
  • Spectrum of modulation signal (FFT)
  • RF signal power versus time
  • Spectrum of RF signal (FFT versus max. 18 MHz)

Specifications

Model R&S®FSL-K7
Demodulation bandwidth 100 Hz to 18 MHz
Recording time (depends on demodulation bandwidth) 12.5 ms to 3276 s

Key facts

  • The R&S®FSL-K7 AM/FM/φM measurement demodulator converts the R&S®FSL into an analog modulation analyzer for amplitude-, frequency- or phase-modulated signals. It measures not only characteristics of the useful modulation, but also factors such as residual FM or synchronous modulation.

    The R&S®FSL-K7 is also available for the R&S®ZVL3 and R&S®ZVL6 Vector Network Analyzers.

  • Display and evaluation capabilities
    • Modulation signal versus time
    • Spectrum of modulation signal (FFT)
    • RF signal power versus time
    • Spectrum of RF signal (FFT versus max. 18 MHz)
    • Table with numeric display of
      • Deviation or modulation depth, +peak, –peak, ±peak/2 and RMS weighted
      • Modulation frequency
      • Carrier frequency offset
      • Carrier power
      • Total harmonic distortion (THD) and SINAD

Specifications

Demodulation bandwidth 100 Hz to 18 MHz
Recording time (depends on demodulation bandwidth) 12.5 ms to 3276 s
AF filters  
Highpass filter 50 Hz, 300 Hz
Lowpass filter 3  kHz, 15  kHz, 150  kHz, and 5 %, 10 % or 25 % of demodulation bandwidth
Deemphasis 25/50/75/750 μs
Modulation frequency <5  MHz, max. 0.5 × demodulation bandwidth
Measurement uncertainty
(deviation or modulation depth)
3 %
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