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

Key facts

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 %