The Agilent/Keysight 35660A is an FFT-based dynamic signal analyzer delivering spectrum and network analysis across low-frequency electronics, mechanical, and acoustic testing domains. Dual-channel architecture with integrated signal source enables rapid characterization of filters, networks, and device frequency response. The instrument executes measurements significantly faster than swept-spectrum analyzers while maintaining superior resolution and amplitude accuracy of ±0.5 dB. Built-in HP Instrument BASIC programming, 3.5-inch disk drive, limit testing, and data tables integrate test automation and production validation workflows without external computing infrastructure.
Technical Specifications
• Measurement Bandwidth: 244 µHz to 102.4 kHz (full range); 488 Hz to 102.4 kHz (spectrum analysis, 1-channel); 244 µHz to 51.2 kHz (network analysis, 2-channel)
• Spectral Resolution: 401 lines
• Amplitude Accuracy: ±0.5 dB
• Frequency Accuracy: ±30 ppm
• Channel Matching: Gain ±0.4 dB; Phase ±1.0 degree
• Dynamic Range: 40 dB
• FFT Windows: Force, exponential, uniform, Hann, flat top
• Alias Protection: Complete
• Digital Zoom: Yes
– Key Features
• Built-in Signal Source: Random noise for linear network approximation, periodic chirp for nonlinear response testing, and fixed sine for single-frequency response validation
• Measurement Modes: Spectrum analysis, network analysis, frequency response, gain/phase, group delay, time history, power spectral density, linear and power spectrum
• Waveform Math: Conjugation, FFT, inverse FFT, square root, frequency domain integration and differentiation
• Automation: HP Instrument BASIC programming for custom test sequences, decision logic, and I/O control
• Data Management: 3.5-inch disk drive for trace, table, state, and program storage; compatible with HP Series 200/300 workstations (Option 002 removes drive)
• Limit Testing: User-definable pass/fail thresholds with point, band, and slope-based limit configuration
• Data Tables: Up to 400 X-axis entry points with automatic Y-axis value computation
– Typical Applications
• Electronics: Distortion, spur level, frequency drift, and intermodulation analysis
• Mechanical: Frequency response characterization
• Acoustics and vibration testing
– Compatibility & Integration
HP Instrument BASIC subset supports automation, branching, and I/O control. Disk storage integrates with HP Series 200/300 workstations for extended data management.
