The GRClok-1500 is a smart, compact, and cost-effective rubidium oscillator featuring an optional integrated GPS/GNSS receiver. It utilizes u-Blox’s advanced 50-channel LEA-6T GPS receiver with a 6-position engine and anti-jamming technology, supporting multi-constellation GNSS systems including GPS, Galileo, GLONASS, IRNSS, and BDS/COMPASS.
Designed to fit in a compact 1U chassis and compatible with the Stanford PRS10 model, it employs patented SmarTiming+ technology to discipline the GPS/GNSS reference at 1 ns resolution. This delivers advanced time and frequency features, exceptional performance, reliability, and extended operational life.
Key Specifications and Features:
- Outputs: 10 MHz standard; optional 2.048, 4.096, and 10.23 MHz
- Inputs: 1PPS from GPS/GNSS or internal GPS/GNSS receiver
- Accuracy at Shipment: Typically better than 5×10⁻¹¹ at 25°C
- Temperature Range: -10°C to 55°C standard; options for -32°C to 60°C
- Frequency Stability (ADEV):
- 1 second: 2×10⁻¹¹ standard, 1×10⁻¹¹ optional
- 10 seconds: 8×10⁻¹² standard, 3×10⁻¹² optional
- 100 seconds: 3×10⁻¹² standard, 1×10⁻¹² optional
- Phase Noise at 10 MHz (dBc/Hz):
- 1 Hz: -75
- 10 Hz: -95
- 100 Hz: -125
- 1 kHz: -145
- 10 kHz: -150
- Holdover Performance: Less than 1 µs over 24 hours (with temperature control), varying with environmental conditions
- Warm-up Time at 25°C: Approximately 12 minutes standard; options vary from under 5 to 25 minutes
- Power Consumption:
- Standard: Under 7–14 W at 24 V
- With GPS/GNSS: Additional 2 W
- Optional modes consume up to 50 W depending on configuration and voltage (12V or 24V)
- Size: 128 x 95 x 38.1 mm (5.03 x 3.74 x 1.5 inches)
- Weight: 500 g (1.1 lbs)
- Vibration and Low g Sensitivity: Detailed specifications available as per environment
This rubidium oscillator combines precision timing and advanced GNSS integration, making it ideal for applications requiring reliable and accurate time and frequency references.
