The Agilent/Keysight 83651B is a high-performance synthesized signal source specifically designed and optimized for use with the Agilent 8510 series network analyzers. It provides precise broadband frequency coverage from 45 MHz to 50 GHz with an exceptional 1 Hz resolution. To maximize value and efficiency in dedicated systems, this model omits front panel modulation controls, keyboards, and displays, relying instead on rear-panel connections and direct system control.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | HP-IB (GPIB), 8510 System Interface |
| Display | None (dedicated system source, no front panel display) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 to 132 Vac (48 to 440 Hz) or 198 to 264 Vac (48 to 66 Hz), 400 VA maximum |
| Operating Temperature | 0 to +55 °C |
| Dimensions (W×H×D) | 425 mm × 133 mm × 497 mm |
| Weight | 27 kg |
Frequency Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 45 MHz to 50 GHz |
| Frequency Resolution | 1 Hz |
| Aging Rate (Standard Timebase) | < 1 × 10^-9/day (after 72 hours) |
| Temperature Stability | < 1 × 10^-10/°C |
| Phase Offset Range | 0 to 360 degrees |
| Phase Offset Resolution | 1 degree |
RF Output Power
| Parameter | Value |
|---|---|
| Max Leveled Power (0.045 to 2 GHz) | +10 dBm |
| Max Leveled Power (2 to 20 GHz) | +10 dBm |
| Max Leveled Power (20 to 26.5 GHz) | +5 dBm |
| Max Leveled Power (26.5 to 40 GHz) | +2.5 dBm |
| Max Leveled Power (40 to 50 GHz) | -3 dBm |
| Minimum Leveled Power (Standard) | -20 dBm |
| Power Level Resolution | 0.02 dB |
| Output Impedance | 50 ohms (nominal) |
Spectral Purity
| Parameter | Value |
|---|---|
| Harmonics (0.045 to 2.0 GHz) | < -30 dBc |
| Harmonics (2.0 to 26.5 GHz) | < -50 dBc |
| Harmonics (26.5 to 40 GHz) | < -40 dBc |
| Harmonics (40 to 50 GHz) | < -40 dBc |
| Sub-harmonics (20 to 26.5 GHz) | < -50 dBc |
| Sub-harmonics (26.5 to 50 GHz) | < -40 dBc |
| Non-harmonic Spurious (0.045 to 2.0 GHz) | < -50 dBc |
| Non-harmonic Spurious (2.0 to 20 GHz) | < -60 dBc |
| Non-harmonic Spurious (20 to 26.5 GHz) | < -54 dBc |
| SSB Phase Noise @ 10 kHz Offset (10 GHz) | < -80 dBc/Hz |
| SSB Phase Noise @ 10 kHz Offset (40 to 50 GHz) | < -68 dBc/Hz |
Inputs and Outputs (Front/Rear Panel)
| Parameter | Value |
|---|---|
| RF Output Connector | 2.4 mm (male), rear panel |
| External Reference Input Frequency | 10 MHz |
| Internal Reference Output Frequency | 10 MHz |
Sweep Capabilities
| Parameter | Value |
|---|---|
| Sweep Types | Step sweep, List sweep |
System and Control
| Parameter | Value |
|---|---|
| Remote Control Languages | HP-IB Command Set (optimized for 8510) |
Power and Mechanical
| Parameter | Value |
|---|---|
| Rack Height | 3 U |
Environmental and Compliance
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 to +75 °C |
| Operating Altitude Limit | Up to 4,570 meters (15,000 feet) |
Available Options and Accessories
| Parameter | Value |
|---|---|
| Option 001 | Option 002 = Step Attenuator (extends minimum leveled power to -110 dBm) |
| Option 1D5 | High-Stability Timebase |
Power
| Parameter | Value |
|---|---|
| Line Voltage | 90 to 132 VAC / 198 to 264 VAC (automatic selection) |
| Line Frequency | 48 to 66 Hz |
| Maximum Power Consumption | 400 VA |
Frequency
| Parameter | Value |
|---|---|
| Frequency Switching Time | < 15 ms |
Options
| Parameter | Value |
|---|---|
| Option 002 Description | Adds a 90 dB step attenuator in 10 dB steps |
| Option 004 Description | Moves RF output connector to the rear panel |
Environmental
| Parameter | Value |
|---|---|
| Operating Humidity | Up to 95% RH @ 40 °C |
Phase Noise
| Parameter | Value |
|---|---|
| SSB Phase Noise @ 100 Hz Offset (10 GHz) | -70 dBc/Hz |
| SSB Phase Noise @ 1 kHz Offset (10 GHz) | -78 dBc/Hz |
| SSB Phase Noise @ 100 kHz Offset (10 GHz) | -113 dBc/Hz |
| SSB Phase Noise @ 1 MHz Offset (10 GHz) | -130 dBc/Hz |
| SSB Phase Noise @ 100 kHz Offset (40 to 50 GHz) | -99 dBc/Hz |
| SSB Phase Noise @ 1 MHz Offset (40 to 50 GHz) | -122 dBc/Hz |
RF Output
| Parameter | Value |
|---|---|
| Leveled Power Flatness (0.045 to 20 GHz) | ±0.7 dB |
| Leveled Power Flatness (20 to 26.5 GHz) | ±0.9 dB |
| Leveled Power Flatness (26.5 to 40 GHz) | ±1.1 dB |
| Leveled Power Flatness (40 to 50 GHz) | ±1.4 dB |
| Minimum Leveled Power with Option 002 | -110 dBm |
| Step Attenuator Range (Option 002) | 90 dB in 10 dB steps |
| Max Leveled Power with Option 002 (0.045 to 2 GHz) | +8 dBm |
| Max Leveled Power with Option 002 (2 to 20 GHz) | +8 dBm |
| Max Leveled Power with Option 002 (20 to 26.5 GHz) | +3 dBm |
| Max Leveled Power with Option 002 (26.5 to 40 GHz) | +0 dBm |
| Max Leveled Power with Option 002 (40 to 50 GHz) | -3 dBm |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Rear Panel GPIB Ports | HP-IB port and dedicated HP 8510 System Interface port |
Technology
Synthesized Signal Generation
Applications
Dedicated RF/Microwave Source for Network Analysis