The Rohde & Schwarz NRVD is a dual-channel RF power meter that functions as two independent, simultaneously operating power meters within a single chassis. It performs average power, modulated power (AM and pulse), reflection, and DC voltage measurements across DC to 40 GHz with sensitivity extending into the picomwatt range. The instrument excels in applications requiring direct correlation of two measurement channels—reflection coefficient, SWR, and return loss calculations are computed from paired channel data when used with an SWR bridge.
Technical Specifications
The NRVD accommodates frequency ranges from DC to 40 GHz and measures power from 100 pW into the kilowatt range. Its dual LC display with backlighting and bargraph indicators provides independent digital readouts for each channel. The instrument stores up to 20 complete setups with write-protection capability. All functions respond to remote control via IEC/IEEE bus with full SCPI compliance.
Automatic frequency response correction occurs via keyboard entry, IEC/IEEE bus command, or frequency-proportional DC voltage input. Sensor correction values derive from stored calibration characteristics, adjusted in real time based on measured temperature and signal level. Pulse power measurements calculate peak values for rectangular RF bursts using duty factor and average power inputs. Modulation depth determination applies to amplitude-modulated signals. Peak envelope power (PEP) measurement is available with Peak Power Sensors such as the NRV-Z3x series. True RMS power measurement is achievable with diode sensors equipped with integrated attenuators.
– Key Features
• Two fully independent measurement channels with simultaneous operation and inter-channel data exchange
• Intelligent, plug-and-play sensors with individual absolute calibration and interchangeability
• Menu-guided operation via softkeys with variable backlit LC display
• Thermal power sensors for high-accuracy average power measurement
• Diode power sensors delivering picomwatt-level sensitivity
– Typical Applications
Laboratory power characterization, production test environments, and R&D measurement campaigns benefit from the NRVD’s dual-channel simultaneity and sensor flexibility. SWR and reflection measurements leverage correlated channel data for direct calculation.
– Compatibility & Integration
Full remote control via IEC/IEEE 488 bus (SCPI protocol) enables integration into automated test systems. Sensor ecosystem includes thermal and diode types, each individually calibrated for absolute interchangeability without specification degradation.
