| Frequency range | 20 Hz to 3.6 GHz | 20 Hz to 26.5 GHz | 20 Hz to 43 GHz | 20 Hz to 50 GHz | 
        
            | Reference frequency | aging: 1 × 10–7/year, optionally 2 × 10 –8/year | 
        
            | Absolute power measurement | using R&S®NRP-Zxx power sensor or external power meters | 
        
            | Uncertainty | with R&S®NRP-Z27/-Z37: 0.083 dB (up to 4.2 GHz, +15 °C to +35 °C) | 
        
            | Relative level measurement | 
        
            | Measurement range | +30 dBm to –140 dBm, depending on frequency | 
        
            | Linearity (+20 dBm to –140 dBm) | ±0.01 dB ± 0.005 dB per 10 dB step | 
        
            | AM modulation measurements | 
        
            | Modulation depth | 0 % to 100 % | 
        
            | Measurement uncertainty | 1 % of reading, 50 Hz to 50 kHz; 0.4 % of reading, 90 Hz to 150 Hz, in range from 5 % to 99 %
 | 
        
            | Modulation frequency | 10 Hz to 100 kHz | 
        
            | Inherent distortion | 0.3 % | 
        
            | FM modulation measurements | 
        
            | Frequency deviation | max. 500 kHz | 
        
            | Measurement uncertainty | 1 % of reading, 50 Hz to 100 kHz | 
        
            | Modulation frequency | 10 Hz to 200 kHz | 
        
            | Inherent distortion | 0.1 % | 
        
            | φM modulation measurements | 
        
            | Phase deviation | max. 10 000 rad | 
        
            | Measurement uncertainty | 1 % of reading, 50 Hz to 100 kHz | 
        
            | Modulation frequency | 10 Hz to 100 kHz | 
        
            | Inherent distortion | 0.1 % | 
        
            | Audio measurements | 
        
            | Frequency range | DC, 20 Hz to 1 MHz | 
        
            | Level ranges | 0.4 V, 4 V | 
        
            | Measurement uncertainty | 1 % of reading, 20 Hz to 100 kHz | 
        
            | Spectrum analyzer | 
        
            | Frequency range | 20 Hz to 3.6 GHz | 20 Hz to 26.5 GHz | 20 Hz to 43 GHz | 20 Hz to 50 GHz | 
        
            | Resolution bandwidths | 10 Hz to 50 MHz; FFT filters: 1 Hz to 30 kHz; channel filters; EMI bandwidths | 
        
            | Video bandwidths | 1 Hz to 10 MHz | 
        
            | Displayed average noise level (RBW 1 Hz) | 
        
            | 1 GHz | typ. –158 dBm | typ. –156 dBm | typ. –156 dBm | typ. –156 dBm | 
        
            | 26 GHz | - | typ. –151 dBm | typ. –151 dBm | typ. –151 dBm | 
        
            | 43 GHz | - | - | typ. –140 dBm | typ. –140 dBm | 
        
            | 50 GHz | - | - | - | typ. –133 dBm | 
        
            | Trace detectors | Max Peak, Min Peak, Auto Peak, Sample, RMS, Average, Quasi Peak | 
        
            | Phase noise | typ. –133 dBc (1 Hz) at 10 kHz from carrier, 640 MHz carrier frequency | 
        
            | Sweep time | 
        
            | Span > 10 Hz | 2.5 ms to 16 000 s | 
        
            | Span 0 Hz (zero span) | 1 μs to 16 000 s | 
        
            | Image frequency rejection | 
        
            | f < 3.6 GHz | typ. 110 dB | 
        
            | f > 3.6 GHz | - | 0 dB | 
        
            | f > 3.6 GHz, with R&S®FSMR-B2 option
 | - | typ. 100 dB |