The Keysight N5166B CXG RF Vector Signal Generator delivers precision signal generation across 9 kHz to 3 GHz or 6 GHz, purpose-built for component and receiver testing in IoT and general-purpose device validation. This vector signal generator combines a wide frequency range with flexible modulation capabilities and high spectral purity, enabling accurate characterization of complex RF behaviors.
Technical Specifications
Frequency Performance
• Frequency range: 9 kHz to 3 GHz or 6 GHz (model dependent)
• Frequency resolution: 0.001 Hz
• Frequency switching speed: ≤5 ms typical (SCPI, List/Step sweep)
• Frequency reference accuracy: ±4 × 10⁻⁸ calibration accuracy
• Internal timebase aging: ≤±5 ppm/10 years; <±1 ppm/year
• External reference input: 10 MHz standard; 1–50 MHz with Option 1ER
• External reference lock range: ±1 ppm
Amplitude and Power
• Output power at 1 GHz: +18 dBm
• Maximum output power range: –3.0 to +20 dBm nominal
• Amplitude resolution: 0.01 dB
• Amplitude flatness (120 MHz): ±0.2 dB (with channel corrections optimized for I/Q output)
• Amplitude drift: 0.10 dB 3 GHz per g/kg absolute humidity change
• Temperature coefficient (outside 20–30°C): 0.01 dB/°C for both output power and absolute level accuracy
Modulation Capabilities
• RF modulation bandwidth: Up to 120 MHz
• Baseband channels: 2 (I and Q)
• Baseband resolution: 12 bits
• Baseband sample rate: 100 Sa/s to 75 MSa/s (Option 653); 100 Sa/s to 150 MSa/s (Options 653 + 655)
• Arbitrary waveform memory: 512 MSa typical
• Frequency offset range: ±80 MHz baseband
• Modulation types: AM, FM, phase modulation (Option UNT), narrow pulse modulation (Option UNW)
• Sweep modes: Step and List; List mode supports independent waveforms, user-defined frequencies and amplitudes per point
Spectral Purity
• Harmonics at 1 GHz: –35 dBc
• Non-harmonics at 1 GHz: –72 dBc
– Key Features
• High-resolution frequency tuning with 0.001 Hz steps
• Extended waveform memory supports complex signal playback
• Multiple baseband bandwidth options: 60 MHz (Option 653) or 120 MHz (Option 655 with 653)
• Memory upgrade path: 32 MSa to 512 MSa (Option 022 with 653)
• Excellent frequency stability and low phase noise for precise testing
• List sweep capability for multi-point characterization without gaps
– Typical Applications
• Component and receiver testing for wireless devices
• IoT device validation and characterization
• Complex signal generation for protocol testing
• Spectral purity verification and harmonic analysis
• Arbitrary waveform playback for custom modulation schemes
– Compatibility & Integration
External frequency reference input accepts 1–50 MHz sources (Option 1ER) with ±1 ppm lock range for synchronization with external standards. SCPI command interface supports automated test sequences and frequency/amplitude sweep control.
