Stanford Research CG649 – LVDS up to 2050MHz
Stanford Research Signal Generators. Model: CG649.
- Model
- Stanford Research CG649
- Calibration
- Available on request
- Price
- $550
- Status
- In stock
- RFQ ref
- CG649
This unit
The Stanford Research CG649 is a LVDS clock and data generator engineered for applications demanding signal integrity up to 2050 MHz. It delivers stable, low-jitter differential outputs via rear-panel RJ-45 connectors on twisted pairs, with 100 Ω source impedance matched to standard CAT-6 terminations. The instrument provides precise frequency, amplitude, and timing control essential for characterizing high-speed digital systems and validating complex electronic designs.
Technical Specifications
Clock Generation- Maximum Output Frequency: 2050 MHz
- Output Signal Type: LVDS (Low-Voltage Differential Signaling)
- Output Connectors: Rear-panel RJ-45 for differential square wave clocks on twisted pairs
- Output Impedance: 100 Ω source impedance
- Cable Compatibility: Shielded CAT-6 cable with 100 Ω terminations
- Auxiliary Output: ±5 VDC power available on RJ-45 connector for optional line receivers Timing Performance
- Jitter (RMS): Less than 1 ps RMS
- Rise/Fall Time: Typically 80 ps
- Phase Adjustment: High-precision control with resolutions to one nanodegree
- Time Modulation: ±5 ns modulation range via rear-panel input; 1 ns/V sensitivity; DC to >10 kHz bandwidth Interfaces & Power
- Rear-Panel Connectivity: RJ-45 for LVDS and RS-485 signals
- Auxiliary Power: ±5 VDC for optional line receivers providing complementary logic on SMA connectors
Key Features
- Sub-picosecond jitter performance for demanding timing applications
- Fast signal edges enabling high-fidelity differential transmission
- Nanodegree-resolution phase control for precision synchronization
- Low-frequency modulation capability via analog input
- Integrated power supply for optional receiver modules
Typical Applications
- High-speed digital system testing and characterization
- LVDS clock distribution and synchronization
- Differential signaling validation
- Advanced electronics development and validation
Compatibility & Integration Works with optional line receivers to convert LVDS outputs to complementary logic levels on SMA connectors. Designed for CAT-6 twisted-pair cabling with matched 100 Ω termination networks.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 2050 MHz | Voltage / Current Range: ±5 VDC |
Stanford Research CG649 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Stanford Research CG649. 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 CG649 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 CG649 price
This Stanford Research CG649 is listed at $550. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Stanford Research CG649 calibration cost
NIST-traceable calibration for the Stanford Research CG649 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 →
