Rohde and Schwarz NRP33S Three-Path Diode Power Sensor, 33 GHz

The Rohde & Schwarz NRP33S is a three-path diode power sensor for precision RF and microwave power measurements from DC to 33 GHz. It delivers measurement accuracy of ±0.35 dB across a 93 dB dynamic range, with power measurement capability from -70 dBm to +23 dBm (100 pW to 200 mW). The sensor supports continuous measurement speeds up to 100,000 readings/s and triggered operation at up to 100,000 measurements/s, making it suitable for R&D, manufacturing, and field service applications across CW and modulated signal types including GSM, 3GPP, LTE, LTE-Advanced, and 5G.

Technical Specifications

• Frequency Range: DC to 33 GHz; 10 MHz to 33 GHz


• Power Measurement Range: -70 dBm to +23 dBm (100 pW to 200 mW)


• Dynamic Range: Up to 93 dB


• Measurement Accuracy: ±0.35 dB


• Lower Measurement Limit: -70 dBm


• Measurement Speed: Up to 100,000 readings/s (fast continuous average mode); up to 100,000 triggered measurements/s (minimum 100 µs trigger repetition time); 2 Msps sample rate (continuous)


• Video Bandwidth: 100 kHz


• RF Connectors: 3.5 mm (m); N (m)


• Impedance: 50 Ohms


• Dimensions: 48 mm × 30 mm × 138 mm


• Weight: 0.20 kg (0.44 lb)


• Power Supply: USB


• Interfaces: LAN, USB, GPIB (optional)

Key Features

• Three-path diode architecture optimizes detector range and maintains high accuracy independent of modulation type


• Measurement modes include continuous average, burst average, timeslot average, gate average, trace, and power reflection measurements


• Supports both CW and modulated signals


• Intelligent averaging function reduces measurement time


• Built-in trigger I/O port and status LED


• Detachable cables for operational flexibility


• Suitable for thermal vacuum (TVAC) chamber deployment in satellite communications applications

Typical Applications

• Research and development of RF/microwave systems


• Manufacturing and production testing


• Field maintenance and service


• Wireless signal characterization (GSM, 3GPP, LTE, LTE-Advanced, 5G)


• Power reflection and impedance analysis

Compatibility & Integration

• Operates standalone via USB with laptop or PC


• Compatible with R&S NRX base unit


• Integrates with Rohde & Schwarz signal generators, spectrum analyzers, and network analyzers


• LAN-enabled versions support remote control and web interface access