Stanford Research CG645 – PECL (+2.5Vcc) up to 2050MHz
Stanford Research Signal Generators. Frequency range: Up to 2050 MHz.
- Model
- Stanford Research CG645
- Calibration
- Available on request
- Price
- $450
- Status
- In stock
- RFQ ref
- CG645
This unit
The Stanford Research CG645 is a PECL clock generator delivering stable, precise timing signals up to 2050 MHz. Engineered for applications demanding stringent clock integrity - including high-speed digital systems, telecommunications infrastructure, and semiconductor testing - the CG645 provides the low-jitter outputs and clean spectral performance required in demanding laboratory and production environments.
Technical Specifications
Clock Generation- Frequency range: Up to 2050 MHz
- Output signal type: PECL (+2.5Vcc)
- Output impedance: 50 Ω
- Jitter (RMS): Typically < 1 ps rms
- Transition time: 80 ps (20% to 80%) Output Connectors
- SMA connectors (standard on similar Stanford Research Systems instruments)
Key Features
- Sub-picosecond RMS jitter ensures timing fidelity in high-speed applications
- Fast edge transitions (80 ps) support clean clock distribution
- 50 Ω output impedance matches standard digital system interfaces
- PECL signaling provides low-noise differential outputs
Typical Applications
- High-speed digital system clocking
- Telecommunications and infrastructure timing
- Semiconductor device testing and characterization
- Advanced research laboratory instrumentation
- Systems requiring phase-coherent, low-jitter clock references
Compatibility & Integration The CG645 operates as a standalone benchtop instrument. Rack-mount configuration options are available, enabling integration into automated test systems and facility-level timing distribution networks. PECL output levels and 50 Ω impedance ensure direct compatibility with digital logic families and high-speed data acquisition equipment.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | Up to 2050 MHz | Voltage / Current Range: '+2.5Vcc (PECL) |
Stanford Research CG645 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Stanford Research CG645. 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 Stanford Research CG645 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.
Stanford Research CG645 price
This Stanford Research CG645 is listed at $450. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Stanford Research CG645 calibration cost
NIST-traceable calibration for the Stanford Research CG645 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 →
