HP / Agilent 83621A Synthesized Sweeper, 45 MHz to 20 GHz

The HP/Agilent 83621A Synthesized Sweeper is a precision RF signal source spanning 45 MHz to 20 GHz, engineered for network analysis and microwave characterization. It delivers synthesized frequency accuracy with flexible sweep capabilities and modulation options, operating either as a dedicated source for Agilent 8510 systems or as a standalone RF generator via HPIB control.

Technical Specifications

Frequency Range: 45 MHz to 20 GHz Output Power:

• Maximum leveled output: +10 dBm


• Minimum settable output: −20 dBm Frequency Resolution: 1 Hz Accuracy:


• CW mode: Same as time base accuracy


• Swept mode varies by sweep width: 0.1% ± time base for widths ≥10 MHz; 1% for widths ≥400 MHz; 4 MHz for widths ≥4 GHz; 0.1% for widths >4 GHz Modulation:


• Linear AM mode (100%/V) with 100 kHz 3 dB bandwidth and 50 dB modulation depth


• Scan modulation mode (10 dB/V)


• DC-coupled frequency modulation to 8 MHz


• AM and pulse modulation operate independently or simultaneously Physical: 24 × 20 × 16 in; 50 lbs

Key Features

• 1 Hz frequency resolution and 10 Hz step capability


• List, step, and ramp sweep modes with configurable dwell time and trigger control


• Single sweep, manual sweep, and triggered sweep with output delay


• Power slope adjustment and attenuator decoupling


• Frequency offset and multiplier functions


• Save/recall register storage


• Rear panel RF output; no front panel display or keyboard


• Configurable power-up language: network analyzer protocol or SCPI

Typical Applications Network analyzer source, swept filter characterization, component gain/loss measurement, and S-parameter acquisition across the full 45 MHz to 20 GHz band.

Compatibility & Integration Primary source for Agilent 8510 network analyzer systems. Operates standalone with HPIB interface. Supports millimeter-wave extension via HP 83550 series modules (26.5 to 110 GHz).