Rohde & Schwarz FSIQ26 Vector Signal Analyzer
The R&S FSIQ26 is a cutting-edge Vector Signal Analyzer meticulously engineered for high-performance applications in the 3G radio generation, boasting an impressive frequency range from 20 Hz to 26.5 GHz. This versatile device is the ideal solution for professionals in telecommunications and signal analysis.
Key Features and Specifications
- Resolution Bandwidth (RBW): 1 Hz to 10 MHz with selectable 1/2/3/5 steps.
- High Selectivity: Equipped with 5-pole resolution filters ensuring high selectivity.
- Fast Measurements: FFT filter with RBW from 1 Hz to 1 kHz for rapid assessments.
- Noise Performance: Displayed average noise floor at -150 dBm typ., in a 10 Hz bandwidth.
- Interception Point: Third-order intercept at +22 dBm.
- Phase Noise: Remarkable -150 dBc (1/Hz) at a 5 MHz offset.
- Dynamic Range: Ultrawide dynamic range of 75 dB ACPR for WCDMA with a 4.096 MHz integration bandwidth.
- Channel Power Measurements: 82 dB ACPR in alternate channels for advanced WCDMA analysis.
- True RMS Detector: For high-precision power measurements regardless of waveform.
- Fast Time Domain Analysis: Achieve swift measurements with a 1 µs zero span sweep time.
- Integrated Measurement Capabilities: Supports all major mobile radio standards and modulation modes, featuring versatile result displays including I and Q signals, magnitude and phase, and detailed vector and constellation diagrams.
Measurement Functions
Frequency Domain
In the frequency domain, the FSIQ26 excels at measuring intermodulation and harmonics with precision. The device's high third-order intercept point and extremely low noise floor facilitate an intermodulation-free dynamic range exceeding 110 dB, establishing its reliability in complex measurement tasks. Ideal for ACPR measurements across mobile radio platforms, the FSIQ26 achieves a maximum ACPR value for WCDMA of 75 dB, even at input levels of -12 dBm. Its RMS detector is optimally designed for precise power measurements across multiple bandwidths, effectively addressing the challenges of testing modulated signals.
Time Domain
The FSIQ26 offers comprehensive capabilities for burst analysis in TDMA systems, featuring gate functions and trigger delay, complemented by integrated RF triggering. A swift sweep time of 1 µs ensures precise timing measurements across leading mobile radio systems while maintaining minimal instrument impact on broadband measurement accuracy. The array of marker functions combined with customizable gated sweeps allows for in-depth RMS, average, and peak measurements over a selectable time window.
Modulation Domain
With its robust integrated vector signal analyzer, the FSIQ26 facilitates diverse measurement capabilities for signals exhibiting both digital and analog modulation. Supporting 18 mobile radio standards—including GSM, NADC, IS95, and WCDMA—the system offers ready-to-use presets that minimize downtime in locating specifications. Users experience a comprehensive display of results that includes vector and constellation diagrams, I/Q signals, and modulation error tables. The FSIQ26 also serves as a general-purpose demodulator for non-standard modulation techniques, with 13 available digital demodulators such as BPSK, QPSK, and 16QAM, supporting configurable parameters for tailored system testing.
