The Rohde & Schwarz NRT2 is a 4 GHz power reflection meter for precise measurement of forward and reverse power, reflection coefficients, and related RF parameters across 25 MHz to 4 GHz. The instrument displays forward and reverse power simultaneously, enabling rapid characterization of mismatched loads, transmission line performance, and RF system efficiency. A 5-inch color touchscreen provides intuitive operation with intelligent menus, analog bargraph display, configurable limit monitoring, and visual alerts for out-of-specification measurements. Measurement uncertainty is 3.2% of reading (0.14 dB) plus zero offset under CW conditions from 0.3 GHz to 4 GHz, with temperature stability of 0.25%/K.
Technical Specifications
• Frequency range: 25 MHz to 4 GHz (sensor-dependent)
• Measurement functions: Forward power, reflection power, average power, burst power, peak power, PEP, crest factor, CCDF, mismatch, return loss, SWR, reflection coefficient, reflection ratio (%), and absorption calculations (average, burst, and PEP)
• Power measurement range: 0.007 W to 75 W (CW, FM, ϕM, FSK, GMSK); extended ranges with NRT-Z44 sensor to 0.003 W to 300 W (peak)
• Measurement uncertainty: 3.2% of reading (0.14 dB) plus zero offset at 18–28 °C, CW
• Temperature coefficient: 0.25%/K (0.011 dB/K)
• Modulation error (FM, ϕM, FSK, GMSK, 80% AM): ±0% of reading
• Measurement time: 1.4 s typical (averaging factor 32); 4.9 s (averaging factor 128)
• Display: 5-inch color touchscreen with autoscale and visual limit highlighting
– Key Features
• Simultaneous forward and reverse parameter display
• Configurable limit monitoring with red-flag alerts
• Direct operation with R&S®NRT-Zxx directional power sensors
• Remote control via LAN, USB, and GPIB (with R&S®NRT2-B8 option)
• PC integration via R&S®NRT-Z5 USB interface adapter
– Typical Applications
• RF amplifier characterization and validation
• Transmission line and impedance matching verification
• Power efficiency measurement in RF systems
• Production and acceptance testing
– Compatibility & Integration
The NRT2 operates with R&S®NRT-Zxx directional power sensors. Sensors connect directly to the instrument or to a PC via the R&S®NRT-Z5 USB interface adapter. GPIB support is available through the R&S®NRT2-B8 option.
