Agilent / Keysight 8660D Synthesized Signal Generator Mainframe

The Agilent/Keysight 8660D is a modular, solid-state synthesized signal generator mainframe that serves as the foundation for precision RF and modulation applications. It accepts plug-in RF and modulation modules to establish frequency coverage, output level, and modulation capability tailored to specific test requirements. The mainframe itself provides the synthesizer core, display, control logic, and interface infrastructure; actual signal generation depends on installed RF plug-in sections.

– Technical Specifications

Frequency Range
Dependent on RF plug-in module selection:
• HP 86601A: 10 kHz to 110 MHz
• HP 86602B: 1 MHz to 1300 MHz
• HP 86603A: 1 MHz to 2600 MHz

Frequency Resolution
• HP 86601A: 1 Hz
• HP 86602B: 1 Hz
• HP 86603A: 1 Hz to 1300 MHz; 2 Hz above 1300 MHz

Output Level
Calibrated range exceeds 140 dB across all plug-in configurations:
• HP 86601A: +13 dBm to −146 dBm
• HP 86602B: +10 dBm to −146 dBm
• HP 86603A: +10 dBm to −136 dBm (below 1300 MHz); +7 dBm to −136 dBm (1300 MHz and above)

Modulation
AM, FM, Phase Modulation, and Pulse Modulation via plug-in or internal auxiliary sections.

Stability & Accuracy
Phase-locked to 100 MHz master oscillator. Option 001 provides ±3 × 10⁻⁹/day internal oscillator stability. External reference input supported.

Display
10-digit readout.

Programmability
HP-IB (Hewlett-Packard Interface Bus) and BCD control; factory-set HP-IB address 19. Remote programming of plug-in sections through mainframe.

Power
Approximately 350 W or 200 W. Standard options: 100, 120, 220, or 240 V AC. Option 003 enables 48–440 Hz line frequency operation.

Operating Temperature
0 to +55 °C.

– Key Features

• Modular architecture enables frequency and modulation customization
• Synthesized accuracy with external reference support
• Wide dynamic range exceeding 140 dB
• HP-IB remote control for integration into automated test systems
• Solid-state design with 10-digit frequency resolution

– Compatibility & Integration

The 8660D requires RF and Modulation/Auxiliary plug-in sections for operation. Common RF plug-ins span 10 kHz to 2.6 GHz. An HP 11661A/B Frequency Extension Module may be required with certain RF sections, such as the HP 86602B and HP 86603A.