The Rohde & Schwarz NRP18S-25 is a three-path diode power sensor engineered for accurate average power measurement from 10 MHz to 18 GHz. It measures power levels from -45 dBm to +45 dBm (30 nW to 30 W), with a lower measurement limit of -70 dBm and dynamic range up to 93 dB. The three-path architecture delivers thermal-equivalent measurement accuracy independent of signal modulation while rejecting interfering signals and harmonics at speeds far exceeding traditional thermal sensors.
Technical Specifications
• Frequency Range: 10 MHz to 18 GHz
• Power Measurement Range: -45 dBm to +45 dBm (-70 dBm lower measurement limit); 30 nW to 30 W
• Dynamic Range: Up to 93 dB
• Upstream Attenuator: 25 dB
• Connector: Type N (male)
• Rise Time / Video Bandwidth: 100 kHz
• Impedance (SWR): 10 MHz–2.4 GHz: < 1.14; 2.4–8.0 GHz: < 1.25; 8.0–12.4 GHz: < 1.30; 12.4–18.0 GHz: < 1.41
• Measurement Uncertainty (20–25 °C): 0.083–0.198 dB absolute; 0.022–0.087 dB relative
• Weight: 0.6 kg
– Key Features
• Fast continuous average mode: 100,000 readings/s
• Triggered measurements: 10,000 per second
• Buffered mode: up to 8192 measured values per block; minimum aperture time 10 µs; minimum trigger repetition time 100 µs
• Automatic mismatch correction using stored production S-parameters
• Built-in trigger I/O port
• Status LED indicator
• USB and LAN connectivity (USBTMC)
– Typical Applications
• CW and modulated signal measurement
• Wireless signal analysis (GSM, 3GPP, LTE)
• Burst average, timeslot average, and gate average measurements
• Trace measurements
• Calibration and R&D testing
– Compatibility & Integration
Connects via USB or LAN using USBTMC protocol. Operation requires R&S NRP-ZKU USB sensor cable or R&S NRP-ZK6 power sensor cable.
