Agilent / Keysight 8673D Signal Generator
Agilent / Keysight RF Signal Sources. Frequency Range: 0.05 GHz to 26.5 GHz, Power Range (dBm): +8 dBm to -100 dBm (2–26 GHz); +10 dBm to -100 dBm (0.05–2 GHz), Voltage / Current Range: 0 to +10 V (sweep ramp); 1 V peak (external modulation input).
- Model
- Agilent / Keysight 8673D
- Calibration
- Available on request
- Price
- $2,846
- Status
- In stock
- RFQ ref
- 8673D
This unit
The Agilent/Keysight 8673D is a synthesized microwave signal generator delivering precise frequency synthesis and modulation across 0.05 GHz to 26.5 GHz. Built around a YIG-tuned oscillator phase-locked to a 10 MHz quartz reference, it achieves frequency stability better than 5 × 10⁻⁷ per day with 1 kHz resolution. The instrument generates output power from +8 dBm to -100 dBm with harmonics suppressed below -60 dBc, making it suitable for radar, communications, and microwave subsystem characterization.
Technical Specifications
Frequency Performance- Frequency range: 0.05 GHz to 26.5 GHz with overrange capability
- Fundamental oscillator: 2.0 GHz to 6.6 GHz YIG-tuned, multiplied for broadband coverage
- Frequency resolution: 1 kHz
- Phase stability: Quartz crystal reference locking; frequency drift < 5 × 10⁻⁷ per day
- Phase noise: Optimized via phase-locked loops Output Power
- Output level range: 0 dBm to -100 dBm (2 GHz to 26 GHz); +10 dBm to -100 dBm (0.05 GHz to 2 GHz)
- Calibrated output power: +8 dBm to -100 dBm
- Output level resolution (remote): 0.1 dB
- Harmonics/subharmonics: < -60 dBc
- Pulse modulation: Peak power leveled to typically ±1.5 dBm/-1.0 dBm relative to set CW level Modulation & Control
- Modulation types: AM, FM, Pulse (internally leveled)
- AM rates: Up to 100 kHz with front-panel metering
- FM: Six ranges; rates and peak deviations to 10 MHz
- Pulse modulation: Full-range internal leveling with calibrated peak power
- Simultaneous modulation: AM, FM, and Pulse applied together
- External control: AM depth and FM deviation via 1 V peak modulating input Sweep Capability
- Sweep modes: Manual, auto, or single
- Sweep types: Start/stop or AF (span)
- Frequency points: Maximum 9999 per sweep
- Dwell time: 1 to 255 ms per frequency
- Markers: Five independent, settable frequency markers
- Sweep outputs: 0 to +10 V ramp, 0.5 V/GHz ramp, Z-axis blanking, tone marker, penlift
Key Features
- 1 kHz frequency resolution across 0.05 to 26.5 GHz range
- Wide dynamic range: +8 dBm maximum to -100 dBm minimum output
- Low spurious and phase noise through optimized phase-locked architecture
- Flexible modulation: simultaneous AM, FM, and pulse control
- Programmable sweep with up to 9999 frequency points and independent markers
- Output attenuator option; rear-panel RF output available via option 004
Typical Applications
- Microwave radar system testing and validation
- Communication system characterization
- Subsystem and component measurement where frequency stability is critical
- Receiver sensitivity and selectivity assessment
- Phase noise evaluation
Compatibility & Integration Remote programming via 0.1 dB output level resolution supports automated test sequences. External modulation control accepts 1 V peak input for AM depth and FM deviation adjustment. Sweep outputs provide ramp voltage, marker outputs, and Z-axis blanking for integration with display and measurement systems.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 0.05 GHz to 26.5 GHz | Power Range (dBm): '+8 dBm to -100 dBm (2–26 GHz) |
| +10 dBm to -100 dBm (0.05–2 GHz) | Voltage / Current Range | 0 to +10 V (sweep ramp) |
Agilent / Keysight 8673D — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 8673D. Calibration covers output frequency accuracy, output power level accuracy across the full frequency range, AM/FM/PM/pulse modulation accuracy, harmonic and spurious output levels, and phase noise floor verification. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Agilent / Keysight 8673D faults: YIG oscillator failure (no output or loss of lock), step attenuator wear (output drops or steps at set attenuation), ALC loop failure (uncontrolled output power), I/Q modulator assembly failure. HP/Agilent 836xx series most common faults are YIG oscillator failure and step attenuator contact wear causing output steps or drops at specific attenuation settings. Keysight E4428C/E4438C units most commonly develop ALC loop failure and I/Q modulator assembly faults. YIG oscillator replacement and attenuator service are stocked repairs.
Agilent / Keysight 8673D price
This Agilent / Keysight 8673D is listed at $2,845.78. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight 8673D calibration cost
NIST-traceable calibration for the Agilent / Keysight 8673D is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers output frequency accuracy, output power level accuracy across the full frequency range, AM/FM/PM/pulse modulation accuracy, harmonic and spurious output levels, and phase noise floor verification. Turnaround is 1 to 3 business days after receipt. See full calibration details →
