The HP/Agilent 83751A Synthesized Sweeper generates precise RF signals across 2 to 20 GHz with 1 Hz frequency resolution and synthesized accuracy. It combines the stability of a synthesizer with analog sweep speed, enabling rapid component characterization and scalar network analysis. The instrument supports multiple sweep modes—CW, stepped, ramp (analog/digital), marker, alternate, and power sweep—plus AM, FM, and pulse modulation. Internal or external ALC maintains output power accuracy across temperature and frequency variations. GPIB control with SCPI and HP 8350 command compatibility enables direct integration into automated test systems.
Technical Specifications
• Frequency Range: 2 GHz to 20 GHz with 1 Hz resolution
• Output Power: +10 dBm maximum leveled (83751A); -15 dBm minimum (-85 dBm with Option 1E1)
• Output Impedance: 50 ohms; Precision 3.5 mm connector standard
• Harmonic Distortion: Typically < -30 dBc to 10 GHz; < -25 dBc above 10 GHz
• Timebase Stability: ±10 ppm (standard 10 MHz); ±1 × 10⁻¹⁰/°C (Option 1E5)
• Modulation: AM, FM, Pulse
• Sweep Modes: CW, stepped, ramp, marker, alternate, power sweep
• Markers: Up to ten frequency markers per sweep range
• Operating Temperature: 0 to 55 °C
– Key Features
• Internal and external ALC for stable power delivery
• Sweep output (BNC) provides 0 to +10 V proportional voltage for external control
• 10 MHz reference input/output (50 ohm, -5 to +10 dBm)
• Optional Type N connector (1ED) or rear-panel RF output (1E4)
• Dual-instrument synchronous tracking via 10 MHz reference
• Phase noise resolution: 0.01 dB settable; 0.1 dB display
– Typical Applications
• Component and filter characterization across microwave bands
• Swept S-parameter measurements with scalar analyzers
• Noise figure assessment with external detectors
• ATE system integration for production test
– Compatibility & Integration
• GPIB (IEEE-488.1/488.2) with SCPI and HP-II3 programming
• Compatible with Agilent 8757A/C/D/E scalar analyzers and 8970B noise figure meters
• 83550-series external module support
• Backward compatible with legacy HP 8350 sweeper mnemonics
• Power: 90-264 VAC, 50-60 Hz; maximum 400 VA
