R&S®FMx Modulation Analyzer Family
modulation analysis for today's requirements
Features
- AM, FM, PM demodulation
- Fast, automatic frequency adjustment by direct frequency measurement
- Low-noise synthesizer with high frequency resolution
- Separate +PK and -PK detectors with extremely short response time
- True RMS detector
- Extremely high accuracy
- High-precision power measurement (typ. error of FMA <0.5 dB, even smaller for FMB)
Additional features of FMAS:
- Excellent static and dynamic selectivity and high sensitivity for direct measurements at the antenna
- Excellent transmission quality
- High overload capability to interfering signals
- Selective RF level measurement
- Low distortion due to phase-linear IF filters
Additional features of FMAV:
Special FMAV measurements
- Selective modulation depth measurement on VOR/ILS systems with an error of less than 0.8% (for ILS: ≤ 0.5%)
- DDM measurement with an error of ≤ 0.0002 DDM for localizer and ≤ 0.0005 DDM for glide path
- Deviation measurement of VOR subcarrier
- Modulation frequency measurement of VOR/ILS signals
- ILS/VOR phase measurement with extremely high accuracy and resolution down to 0.001°
General FMAV measurements
- RF frequency measurement with 10-digit readout and error £10 Hz at 100 MHz within calibration interval thanks to highly stable reference oscillator (aging <10 -9 /day)
- AM, FM and jM measurements over a wide modulation frequency range
- AF measurement with 5-digit read-out
- Selective distortion and intermodulation measurement
- Universal filter capabilities, psophometric weighting filters (optional)
- AF voltage measurement
- RF power measurement with error of typ. <0.5 dB
High measurement speed
- Two independent frequency counters for simultaneous RF and AF frequency measurements
- All measurement times can be adapted to the specific measurement problem, eg lowest measurement frequency or required counter resolution
- Measurement functions that are not required can be switched off
- FM demodulator with high band-width for analysis of digital modulators (eg mobile radio)
Operation
- Menu-guided operation with softkeys
- Nonvolatile storage of up to 20 complete instrument setups
- Three displays for simultaneous readout of measurement results and indication of all important instrument settings
- Quasi-analog indication of high resolution with absolute or selective as well as MIN-MAX display
- IEC/IEEE-bus remote control to IEEE 488.2
