The Agilent/Keysight 5356B is a frequency converter for precise measurement of signal frequencies in the microwave band. It measures both pulse and CW (continuous wave) frequencies up to 26.5 GHz with 100 Hz resolution and -25 dBm sensitivity. The instrument handles minimum pulse widths of 75 nsec and external gate periods as low as 20 nsec, making it suitable for dynamic frequency analysis in telecommunications, R&D, and electronic test environments.
Technical Specifications
• Frequency range: Up to 26.5 GHz
• Measurement resolution: 100 Hz
• Sensitivity: -25 dBm
• Minimum pulse width: 75 nsec
• Minimum external gate: 20 nsec
• Measurement modes: Pulse and CW frequencies
– Key Features
• High-resolution frequency measurement across wide input dynamic range
• Dual-mode operation for both pulsed and continuous-wave signal analysis
• Fast external gating capability for time-windowed measurements
• User-friendly benchtop form factor for laboratory and field deployment
– Typical Applications
• CHIRP profile analysis
• VCO post-tuning drift measurements
• Microwave frequency characterization
– Compatibility & Integration
The 5356B operates with standard RF connectors for signal input. Integration with automated test systems is supported through HP-IB (IEEE-488) interfaces common to instruments of this generation. The 5356B is part of a frequency converter series that includes related models such as the 5355A, 5356A, 5356C, and integrates with the 5350B, 5351B, and 5352B microwave frequency counter family for expanded measurement capabilities.

















