R&S®FS-K7 FM Measurement Demodulator

for R&S®FSQ/FSU/FSP/FSUP Analyzers and the R&S®ESCI/ESPI Test Receivers

  • Overview

Key Facts

  • Frequency modulation (FM) or carrier power as a function of time
  • Amplitude modulation (AM)
  • RF spectrum (FFT)

Features

  • Digital measurement demodulator with wide demodulation bandwidth range from 12.5 kHz up to 30 MHz
  • Great memory depth for long measurement sequences for FSP/FSU and FSQ

Key Facts

  • FM Measurement Demodulator for Spectrum Analyzers R&S®FSP and FSU and Signal Analyzer FSQ

  • Display
    • Frequency modulation (FM) or carrier power as a function of time
    • Amplitude modulation (AM)
    • Phase modulation (PM)
    • RF spectrum (FFT)
    • AF spectrum
    • Table with numeric values for peak and RMS deviation, modulation frequency (AF), carrier offset, carrier power

Features & Benefits

  • Digital measurement demodulator with wide demodulation bandwidth range from 12.5 kHz up to 30 MHz
  • Great memory depth for long measurement sequences for FSP/FSU and FSQ

The universal characteristics of the digital measurement demodulator open up a wide range of applications, e.g. measurements of synthesizer settling or frequency deviation. The measurement results can be subsequently displayed as

  • Frequency modulation (FM) or carrier power as a function of time
  • Amplitude modulation (AM)
  • Phase modulation (PM)
  • RF spectrum (FFT), max. span up to 120 MHz (R&S®FSQ with R&S®FSQ-B72P)
  • AF spectrum
  • Table with numeric values for peak and RMS deviation, modulation frequency (AF), carrier offset, carrier power, THD, SINAD

The sampled signal is restored and the signal is displayed in its original form. The sampling rate is automatically matched to the demodulation bandwidth. With the FSP e.g. sequences with a length of up to 8.3 s (demodulation bandwidth 12.5 kHz) or 65 ms (demodulation bandwidth 1.6 MHz) can be recorded in the I/Q memory. This allows long bit sequences, such as occur with Bluetooth signals, to be completely investigated. The demodulated data can also be read out via GPIB, RS-232-C or LAN and processed on an external PC.

The FM and RF level trigger function with a wide dynamic range provides special trigger capabilities. This also allows signals to be tested for which no external trigger signal is available.

* The BLUETOOTH® word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Rohde & Schwarz is under license. Other trademarks and trade names are those of their respective owners.

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