The Advantest R4131C is a 10 kHz to 3.5 GHz spectrum analyzer engineered for precise signal magnitude measurement and spectral content analysis. Microcomputer control and a 5.5-inch CRT display deliver intuitive operation across RF and microwave applications. This instrument resolves signal composition with 1 Hz to 1 MHz bandwidth selectivity and achieves -116 dBm sensitivity, enabling detection of weak signals in complex electromagnetic environments.
Technical Specifications
• Frequency Range: 10 kHz to 3.5 GHz
• Frequency Span: 50 kHz to 4 GHz
• Resolution Bandwidth: 1 Hz to 1 MHz
• Center Frequency Resolution: 1 kHz maximum
• Center Frequency Accuracy: ±10 MHz (after zero calibration at local feed through)
• Input Sensitivity: -116 dBm (displayed average noise level)
• Dynamic Range: 70 dB
• Skirt Characteristics: -80 dBc or better
• Input Impedance: 50 Ohm
• Frequency Stability: 100 kHz per 5 minutes
• Amplitude Resolution by Marker: 0.05 dB
• Calibration Output Signal: 200 MHz
• Weight: 10 kg
– Key Features
• AUTO Configuration: Automatically optimizes resolution bandwidth, sweep time, and input attenuator settings
• SAVE/RECALL: Stores and recalls up to three measurement conditions and waveforms
• Auto-Recall on Power-On: Restores previously configured measurement parameters
• Quasi-Peak Measurement: Supports QP value detection for EMI/EMC testing
• Field Strength Measurement: Quantifies signal strength in dBu/m
• Waveform Memory: Captures and compares multiple measurement traces
– Typical Applications
Signal analysis across telecommunications, RF component testing, EMI/EMC characterization, and laboratory measurement.
– Compatibility & Integration
• GPIB Interface: Standard connectivity for automated measurement systems
• Video Output: Enables external display and system integration
• Probe Connector: 4-pin configuration
• Operating Environment: 0°C to 50°C, less than 85% RH; horizontal orientation required with 10 cm minimum clearance around cooling vents
