The Rohde & Schwarz NRP-Z11 is a wideband diode power sensor engineered for average power measurements across DC to 8 GHz. It employs a patented three-path diode architecture with multiple detectors operating in their optimal square-law regions, delivering high measurement accuracy independent of signal modulation. The sensor achieves a 90 dB dynamic range for both CW and modulated signals, with a measurement span from -67 dBm to +23 dBm (200 pW to 200 mW). Its design incorporates 6 dB overlapping ranges between measurement paths, ensuring smooth transitions without discontinuities or delays—performance comparable to thermal sensors while rejecting interfering signals and harmonics.
Technical Specifications
• Sensor Type: Three-path diode sensor
• Frequency Range: DC to 8 GHz; 10 MHz to 8 GHz with three operating bands: 10 MHz to 2.4 GHz to 8.0 GHz
• Power Measurement Range: -67 dBm to +23 dBm (200 pW to 200 mW)
• Dynamic Range: 90 dB for CW, modulated, and broadband signals
• Measurement Speed: Up to 1500 measurements/s in buffered mode (2 × 100 µs intervals)
• Video Bandwidth: 100 kHz
• Measurand: Average power of incident wave or average power of source into 50 Ω
– Key Features
• Six measurement modes: continuous average, burst average, timeslot average, time gating, trace mode, and automatic burst detection
• Signal-synchronized measurement capability for time-domain signal analysis
• N-type connector input with stable impedance matching across frequency bands
• Analog measurement output for real-time signal monitoring
• Trigger inputs and outputs (BNC sockets) for external synchronization
– Compatibility & Integration
The NRP-Z11 operates with Rohde & Schwarz NRP2 base units or connects directly via USB Type B to a PC or laptop, functioning as a standalone measuring instrument. This dual-interface approach supports both laboratory benchtop configurations and portable measurement workflows.
