The Advantest R3671 Signal Analyzer operates across 20 Hz to 13 GHz, delivering precision measurements for RF signal characterization in research, manufacturing, and field environments. This instrument combines low noise performance with high dynamic range to resolve weak signals and strong interferers simultaneously. With optional modulation analysis software, the R3671 addresses diverse communication standards including Bluetooth, IEEE 802.11a/b/g, WiBro, 3GPP, and CDMA2000 variants.
Technical Specifications
Frequency Performance
• Frequency range: 20 Hz to 13 GHz
• Frequency span: 20 Hz to 13 GHz, including 0 Hz (zero span)
• Resolution bandwidth: 1 Hz to 10 MHz in 1-2-3-5 sequences
• Sweep time (zero span): 1 µs to 6000 s
Amplitude and Noise Characteristics
• Displayed average noise level (DANL): −158 dBm typical (preamplifier off, 1 Hz RBW at 1 GHz); −168 dBm typical (preamplifier on, 1 Hz RBW at 1 GHz)
• Third-order intercept point: +26 dBm typical (2 to 3.5 GHz)
• Signal purity: −122 dBc/Hz typical (800 MHz, 10 kHz offset)
• 1 dB compression point: +10 dBm typical (200 MHz to 3.5 GHz)
• Amplitude measurement range: +30 dBm to average display noise level (preamplifier off)
• Maximum safe input level: +30 dBm average continuous power (preamplifier off, ≥10 dB input attenuation)
• Input impedance: 50 ohms
Preamplifier
• Built-in preamplifier: 20 dB gain typical (100 kHz to 3.5 GHz)
– Key Features
• Approximately 3× resolution improvement near carrier versus conventional analyzers
• Broadband modulation analysis with 25 MHz bandwidth included standard
• Continuous and single sweep modes
• GPIB, USB, and LAN interfaces
– Typical Applications
• Modulation analysis for cellular and wireless protocols
• Spectral measurement and signal purity assessment
• Weak signal detection and characterization
• Multi-carrier and complex waveform analysis
– Compatibility & Integration
• Optional R14603 differential IQ input fixture for IQ signal measurement
• Dedicated software options for Bluetooth, IEEE 802.11a/b/g, WiBro, 3GPP, CDMA2000 (1xEV-DO, 1xEV-DV)
• Physical dimensions: 426 mm W × 177 mm H × 455 mm D; 16.5 kg
