The Rohde & Schwarz NRT-Z3 is a directional power sensor engineered for precise, bidirectional power measurements across RF and microwave systems. It operates as a standalone instrument compatible with Rohde & Schwarz base units or PC platforms via USB or RS232 interface adapters. The sensor delivers thermal-equivalent average power measurement, peak envelope power, burst power analysis, and mismatch characterization—critical for mobile communications, R&D, production testing, and quality assurance.
Technical Specifications
Frequency Range: 25 MHz to 4 GHz (sensor-dependent)
Power Measurement Range: 0.007 W to 75 W (CW, FM, ϕM, FSK, GMSK or equivalent)
Insertion Loss:
• 0.06 dB maximum from 0.4 GHz to 1.5 GHz
• 0.09 dB maximum from 1.5 GHz to 4 GHz
Directivity:
• 30 dB minimum from 0.4 GHz to 3 GHz
• 26 dB minimum from 3 GHz to 4 GHz
Matching (SWR, 50 Ω reference):
• 1.07 maximum from 0.4 GHz to 3 GHz
• 1.12 maximum from 3 GHz to 4 GHz
Zero Offset: ±0.001 W [±0.0001 W high resolution]
Measurement Uncertainty (CW, 18–28°C): 3.2% of reading (0.14 dB) plus zero offset across 0.3 GHz to 4 GHz
Temperature Coefficient: 0.25%/K (0.011 dB/K)
Modulation Performance: ±0% reading error for FM, ϕM, FSK, GMSK
– Key Features
• Bidirectional power flow measurement capability
• Average power, peak envelope power, and crest factor analysis
• Burst power and CCDF measurement functions
• Excellent directivity enables accurate reflection and mismatch characterization
• High immunity to radiated interference for near-field antenna measurements
• Compact, rugged design with low insertion loss
– Typical Applications
Mobile communications testing, RF development and validation, production power monitoring, quality management in manufacturing, and field measurements near active antenna systems.
– Compatibility & Integration
Direct connection to compatible Rohde & Schwarz base units (R&S NRT2). Remote PC operation via R&S NRT-Z5 USB adapter, R&S NRT-Z3 RS232 adapter, or R&S NRT-Z4 PCMCIA adapter. Supports GSM/EDGE, W-/TD-CDMA, CDMA, CDMA2000, PHS, NADC, PDC, TETRA, DECT, DAB, and DVB-T standards. Compatible with legacy NAP sensor ecosystem.
