Agilent/Keysight 85644A
Agilent / Keysight RF Signal Sources. Frequency Range: 300 kHz to 6.5 GHz.
- Model
- Agilent / Keysight 85644A
- Calibration
- Available on request
- Price
- $5,781
- Status
- In stock
- RFQ ref
- 85644A
This unit
The Agilent/Keysight 85644A is a tracking generator that operates synchronously with compatible spectrum analyzers and sweep oscillators to enable scalar network analysis. It generates a swept signal locked to the host instrument's frequency, allowing direct measurement of amplitude response in RF components and systems without need for separate source and receiver sweeps.
Technical Specifications
- Frequency Range: 300 kHz to 6.5 GHz
- Output Coupling: AC coupled
- Output Power: Selectable RF output levels
- Tracking Mode: Synchronizes with spectrum analyzer input frequency or sweep oscillator output frequency
- Offset Tracking: Supports frequency translation measurements for mixers and systems with propagation delay
- Control Interface: Front-panel configuration or HP-IB command access
Key Features
- Locked tracking eliminates the need for dual-channel swept measurements, reducing test time
- High dynamic range performance inherited from tuned receiver architecture of connected spectrum analyzers
- Reduced spurious signal sensitivity due to selective input filtering of the host analyzer
- AC coupling prevents DC components from affecting RF measurements
- Offset tracking accommodates devices and circuits with frequency translation or group delay
Typical Applications
- Filter and amplifier amplitude response characterization
- Frequency translation device analysis (mixers, converters)
- System gain and loss measurements
- Two-port scalar network analysis in production and field environments
Compatibility & Integration The 85644A interfaces with Agilent/Keysight 8560 Series, 8566A/B, and 8590 Series spectrum analyzers, as well as 8340A/B and 8350 Series synthesized sweepers and sweep oscillators. Configuration and control occur through front-panel menu selection or remote HP-IB commands, enabling integration into automated test systems.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 300 kHz to 6.5 GHz | Power Range (dBm): '+10 dBm to -80 dBm |
Agilent / Keysight 85644A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 85644A. 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 85644A 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 85644A price
This Agilent / Keysight 85644A is listed at $5,781. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight 85644A calibration cost
NIST-traceable calibration for the Agilent / Keysight 85644A 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 →
