Agilent/Keysight 70900B – Local Oscillator Module
Agilent / Keysight RF Signal Sources. Resolution: millihertz.
- Model
- Agilent / Keysight 70900B
- Calibration
- Available on request
- Price
- $1,889
- Status
- In stock
- RFQ ref
- 70900B
This unit
The Agilent/Keysight 70900B is a discontinued synthesized local oscillator module and master control unit for the 70000 Series Modular Measurement System. It functions as both the LO source and system controller for spectrum analyzers, surveillance receivers, and lightwave signal analyzers. The module delivers phase noise performance of -108 dBc/Hz at 10 kHz offset, millihertz frequency resolution, and fast tuning speed that directly influences analyzer responsiveness.
As the master control module, it manages system features, slave module control, command processing speed, and GPIB operation. The 70900B occupies a 2-slot width and supports MSIB, HP-IB, and manual control with downloadable program capability, limit lines, and extensive marker functions. Its open-architecture design integrates into the 70000 MMS platform, allowing mainframes and displays to be separated by up to 1.2 kilometers and operation without a display to reduce cost and space requirements.
Technical Specifications
- Phase noise: -108 dBc/Hz at 10 kHz offset
- Frequency resolution: millihertz
- Module width: 2-slot
- Physical form: Plug-in module for 70000 Series mainframe
Key Features
- Synthesized local oscillator with direct impact on system phase noise and frequency stability
- Master control module governing slave module operation and command processing
- MSIB, HP-IB, and manual control interfaces
- Downloadable program capability
- Limit line definition for component testing and digital radio masks
- Extensive marker capability
- Remote operation support with mainframe-to-display separation up to 1.2 kilometers
- Display-independent operation capability
Typical Applications
- Spectrum analysis systems
- Surveillance receiver configurations
- Lightwave signal analysis
- Automatic test systems
Compatibility & Integration The 70900B is designed exclusively for the Agilent/Keysight 70000 Series Modular Measurement System. It functions as the system master module within the open-architecture platform, enabling integration of multiple analysis modules and custom configurations. This product is obsolete; documentation is provided for legacy system support only.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 3.0 GHz to 6.6 GHz | Power Range (dBm): '+7 to +15 dBm LO output |
| -10 dBm ±0.3 dBm calibrator output | Voltage / Current Range | 0 to 1 V sweep range |
Agilent / Keysight 70900B — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 70900B. 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 70900B 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 70900B price
This Agilent / Keysight 70900B is listed at $1,889. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight 70900B calibration cost
NIST-traceable calibration for the Agilent / Keysight 70900B 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 →
