The Anritsu MS4644B is a 2-port vector network analyzer delivering precise RF and microwave characterization from 10 MHz to 40 GHz. Part of the VectorStar MS4640B Series, this instrument combines high dynamic range up to 142 dB with measurement speeds of 20 µs per point and support for up to 100,000 points on graph. It excels in device validation, R&D, and manufacturing environments requiring traceable S-parameter measurements and advanced pulse or IMD analysis.
## Technical Specifications
• Frequency range: 10 MHz to 40 GHz (70 kHz option available)
• Ports: 2 standard; expandable to 4 with additional units
• Port connectors: K(male)
• Dynamic range: Up to 142 dB; 119 dB typical to 40 GHz
• Output power: Up to +14 dBm
• Source power: Up to +12 dBm
• Measurement speed: 20 µs per point
• Maximum graph points: 100,000
• Receiver linearity: +15 dBm compression point at 70 GHz
• IF bandwidth: 10 Hz (typical); 1 kHz for pulse mode compression
• Physical: 487 × 286 × 591 mm; < 30 kg
## Key Features
• PulseView™: 2.5 ns pulse resolution, 100 dB dynamic range; real-time pulse measurement with IF digitizing option
• IMDView™: Single-connection S-parameter and IMD switching via internal combiner
• DifferentialView™: 4-port balanced/single-ended measurements for differential device analysis (requires dual internal source)
• Spectrum Analyzer Option (Option 49): 70 kHz to 220 GHz; banded configurations to 1.1 THz; dual SPA mode for mixer, amplifier, and spurious testing
• Time Domain Analysis (Option MS4640B-002): Time-domain characterization capability
• Universal Fixture Extraction (UFX) Software: Advanced de-embedding and test fixture removal
• NI AWR Design Environment™: Standard software inclusion
## Standard Interfaces
• USB, Ethernet, IEEE-488.2 (GPIB)
## Typical Applications
• Component characterization and validation
• Amplifier and filter measurements
• Transmission line and interconnect analysis
• Pulse waveform measurement and analysis
• Intermodulation distortion testing
