Ant-1CN-10Hz wireless autonomous seismic node

Mechanical and environmental specifications

• Weight: 1200 g excluding spike
• Dimensions: 90 x 100 x 128 mm
• Operating temperature: -40 °C to +70 °C
• Protection rating: IP68
• Operating life at 25 °C: unlimited with external solar panel, 7 days real-time transmission, 15 days cyclic transmission and 40 days blind recording
• Charging time: 6.5 hours

Acquisition and electronics

• Channels: 1 channel with Delta-Sigma ADC
• A/D converter: 32-bit
• Sampling rate: 0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 10 ms and 20 ms
• Preamplifier gain: 0 to 24 dB in 6 dB steps
• Low cut filter: 1 Hz, DC removed or disabled
• Anti-alias filter: 206.5 Hz at 2 ms, selectable linear phase or minimum phase
• Max input at 0 dB: 2.5 V peak
• Equivalent input noise at 12 dB: 0.5 μV at 0.25 ms; 0.2 μV at 2 ms; 0.14 μV at 4 ms
• Instantaneous dynamic range at 12 dB: 118.9 dB at 0.25 ms; 126.8 dB at 2 ms; 130 dB at 4 ms
• Total dynamic range: 145 dB
• Timing standard: <1 ppm
• Timing accuracy: ±10 μs, GPS disciplined
• Storage: expandable from 32 GB to 128 GB
• Built-in GNSS: simultaneous GPS/Beidou/GLONASS/GNSS, single or dual mode
• Gain accuracy: <1%

10 Hz geophone

• Natural frequency: 10 ±3.5%
• DC resistance: 1800 ±3.5%
• Open-circuit sensitivity: 78.7 ±3.5%
• Damping: 0.7 ±5%
• Distortion: ≤0.1%
• Spurious frequency: ≥240
• Effective frequency range: 0.5 to 1000