The Rohde & Schwarz FSQ40 is a high-performance spectrum and signal analyzer spanning 20 Hz to 40 GHz, designed for demanding signal analysis in research, development, and production environments. It combines spectrum analysis and digital signal demodulation in a single platform, delivering exceptional dynamic range and measurement accuracy across multiple wireless standards. The FSQ40 achieves displayed average noise levels as low as –158 dBm (1 Hz RBW at 1 GHz) and third-order intercept of typically +25 dBm, enabling analysis of complex modulated signals with minimal measurement uncertainty.
Technical Specifications
Frequency Range: 20 Hz to 40 GHz
Dynamic Range & Linearity
• Third Order Intercept (TOI): Typ. +25 dBm
• 1 dB Compression Point: Typ. +13 dBm
• Total Level Uncertainty: 0.3 dB (up to 3.6 GHz)
• Linearity Error: 80 dB
Noise Performance
• Displayed Average Noise Level (1 Hz RBW) at 1 GHz: Typ. –158 dBm
• DANL with preamplifier: <–152 dBm (10 Hz)
• Single Sideband Phase Noise: Typ. –160 dBc/Hz @ 10 MHz offset (640 MHz carrier)
Measurement Capability
• Adjacent Channel Leakage Ratio (3GPP): 84 dB with noise correction
• Demodulation Bandwidth: 28 MHz (120 MHz optional with FSQ-B72)
• I/Q Memory: 16 Msample (I and Q), extendable to 705 Msample
• IF Digitizer: 14-bit at 81.6 MHz; up to 326.4 MHz with FSQ-B72 option
• Sample Rate: 10 kHz to 81.6 MHz continuously variable
Speed
• Frequency-domain sweep time: 2.5 ms
• Time-domain sweep time: 1 µs
• Remote measurement rate (GPIB): Up to 70 measurements/s
– Key Features
• Vector signal analysis for digital modulation characterization
• Integrated spectrum and code domain power measurements
• I/Q data extraction for amplifier adjustment and optimization
• Support for Bluetooth, GSM/EDGE, 3GPP WCDMA, HSDPA, LTE, CDMA2000, WLAN 802.11, and WiMAX standards
– Compatibility & Integration
• IEEE 488.2 GPIB interface
• RS-232-C serial connectivity
