The Agilent/Keysight 8683A is a discontinued RF signal generator engineered for component testing, receiver validation, and calibration procedures. It delivers stable, accurate signal generation with precise frequency and amplitude control in a portable form factor suitable for benchtop and field maintenance use.
– Technical Specifications
Modulation
• AM modulation: 0–70% depth at 1 kHz rate
• FM modulation: Internal FM with 1 kHz nominal sweep rate and variable deviation to ±5 MHz (D models extend to ±10 MHz in x2 bands)
• Pulse modulation with internal generator: rate 10 Hz to 1 MHz (5 ranges), width 50 ns to 100 ms (7 ranges), delay 100 ns width, ON >+1.0 V peak, OFF <+0.4 V peak
• RF pulse rise/fall time: 80 dB; minimum width 1 MHz; peak power ±0.5 dB relative to CW level
Signal Quality
• Phase lock input sensitivity: -5 MHz/V
Power
• Selectable 100, 120, 220, or 240 V (+5%, -10%), 48–66 Hz
• Maximum consumption: <200 VA
Environmental
• Operating temperature: 0° to 55°C
• EMI compliance: MIL-STD-461, VDE0871, CISPR Pub. 11
• Safety: IEC 348
Physical
• Dimensions: 145 mm H × 457 mm W × 472 mm D
• Weight: 17.9 kg net
– Key Features
• Continuously adjustable pulse parameters across seven ranges for precise temporal control
• High-speed RF pulse switching with 80 dB on/off isolation
• Internal FM with fixed sweep rate; extended deviation options in D-series models
• Remote control via SCPI commands over LAN with local lockout capability
• Dual-voltage 48–66 Hz operation from universal AC mains
– Typical Applications
• RF component characterization and validation
• Receiver sensitivity and dynamic range testing
• Equipment calibration and system commissioning
• Field service and portable bench measurement
– Compatibility & Integration
Remote operation via SCPI commands over LAN. Front-panel lockout function disableable by power cycle, LOCAL command, or Preset key.
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