The NI PXI-5650 RF Analog Signal Generator generates continuous-wave and modulated radio frequency signals from 250 kHz to 6.6 GHz with 2 Hz frequency resolution. This 3U PXI module delivers precise RF outputs at +10 dBm maximum into 50 Ω impedance, making it suited for radar, RFIC, and automotive electronics testing. Direct digital synthesis enables phase-continuous frequency sweeping in less than 2 ms typical, while onboard modulation circuitry supports FM, 2-FSK, and on-off keying. The instrument phase-locks to external 10 MHz references and outputs a 10 MHz clock signal. Phase noise measures −110 dBc/Hz at 1 GHz with 10 kHz offset. Internal clock accuracy is ±1 ppm typical between 15 °C and 35 °C. Hybrid-slot compatible with both PXI Express and standard PXI chassis, the PXI-5650 integrates into automated test systems via the NI-RFSG driver, supporting LabVIEW and LabWindows/CVI development environments.
Technical Specifications
• Frequency Range: 250 kHz to 6.6 GHz
• Frequency Resolution: 2 Hz
• Frequency Sweep Tuning Speed: Less than 2 ms typical
• Output Power: +10 dBm maximum (1 Vpk-pk into 50 Ω)
• Output Impedance: 50 Ω
• Phase Noise: −110 dBc/Hz at 1 GHz, 10 kHz offset typical
• Internal Clock Accuracy: ±1 ppm typical (15 °C to 35 °C)
• Reference Clock Output: Up to 10 MHz
– Key Features
• Direct digital synthesis for high-resolution frequency generation
• Modulation support: FM, 2-FSK, on-off keying
• AC-coupled RF output protected against reverse RF power up to −27 dBm and 10 VDC
• External frequency reference input via 50 Ω REF IN connector
• 200 MHz reference timing
• 30 minute recommended warm-up time
– Typical Applications
• Radar system testing and characterization
• RF integrated circuit (RFIC) validation
• Automotive electronics verification
– Compatibility & Integration
• 3U PXI module; hybrid-slot compatible
• Dimensions: 0.8 in. × 5.1 in. × 8.5 in.
• Weight: 14.6 oz
• Supports PXI and PXI Express chassis
• NI-RFSG instrument driver compatible
