The Agilent/Keysight 8684B is a microwave signal generator delivering precise, stable signal generation from 5.4 GHz to 12.5 GHz. Built for benchtop and field maintenance environments, it supports continuous wave and modulated signals across communication, aerospace, defense, radar, and electronic warfare applications.
Technical Specifications
Frequency and Output
• Frequency range: 5.4 GHz to 12.5 GHz
• Resolution: 10 MHz
• Output level range (50 Ω): +10 dBm to −130 dBm
• Output level resolution: 0.1 dB
• Spectral purity (harmonics): < −25 dBc
Modulation Capabilities
Amplitude Modulation (AM): 0% to 70% depth at 1 kHz rate; DC to 10 kHz modulation bandwidth (DC coupled) or 50 Hz to 10 kHz (AC coupled).
Frequency Modulation (FM): ±5 MHz peak deviation; DC to 10 MHz bandwidth or 100 Hz to 10 MHz (AC coupled).
Pulse Modulation: Internal pulse generator with rates from 10 Hz to 1 MHz (continuously adjustable across 5 ranges); pulse width 50 ns to 100 ms (7 ranges); delay adjustment 100 ns, and switching levels ON > +1.0 V peak / OFF < +0.4 V peak. RF pulse rise/fall time 80 dB; minimum pulse width 1 MHz; peak pulse power ±0.5 dB of CW level setting.
– Key Features
• Four operating modes: CW, AM, FM, and pulse modulation
• Remote front-panel lockout control
• 50 Ω output connector
• Compact benchtop footprint: 145 mm H × 457 mm W × 472 mm D
• Weight: 16.5 kg net
– Typical Applications
Modern communications testing, radar system development, electronic warfare simulation, and aerospace/defense signal validation.
– Compatibility & Integration
Successor to HP 8683 and HP 8684 models. Legacy support and documentation available through Keysight.
