Agilent/Keysight 8644B

The Agilent/Keysight 8644B is a synthesized signal generator delivering precise RF and microwave signal generation from 252 kHz to 1030 MHz (extendable to 2060 MHz with Option 002). It combines exceptional spectral purity with flexible modulation and sweep capabilities, serving receiver testing, component characterization, and system validation across laboratory and production environments.

– Technical Specifications

Frequency Performance
• Frequency range: 252 kHz to 1030 MHz (standard); up to 2060 MHz with Option 002
• Frequency resolution: 0.01 Hz
• Phase continuous sweep span: 40 MHz at maximum carrier frequency
• Digital sweep: Stepped across entire range, linear/log selectable, 0.5 to 1000 seconds
• Phase continuous sweep: 20 ms to 10 seconds

Output Power
• Output range: −137 dBm to +13 dBm
• Output level accuracy: ±1.0 dB down to −127 dBm; ±1.0 dB with electronic attenuator option

Signal Purity
• SSB phase noise: −136 dBc/Hz at 20 kHz offset at 1 GHz
• Nonharmonic spurious: 1500 MHz
• Pulse modulation (optional): Rise/fall 80 dB on/off ratio, 50 ns to 999 ms delay and width

Dual Modulation Sources
• Two simultaneous sources via summation
• Independent frequency, phase, amplitude, and waveform control
• Source One: Internal AM, FM, phase, and pulse modulation capability

– Key Features

• Three sweep markers with +5 V Z-axis output
• GPIB remote programming (IEEE-488.2-1987) via HP-SL control language
• All functions remotely controllable except power

– Typical Applications

Receiver testing, RF/microwave component characterization, system performance validation, signal integrity analysis.

– Compatibility & Integration

GPIB interface with full IEEE-488 function support (SH1, AH1, T6, TEO, L4, LEO, SR1, RL1, PPO, DC1, DTO, CO, E2).