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Ant-3CN-2Hz - 2 Hz triaxial wireless seismic node GEOANT
The Ant-3CN-2Hz is a GEOANT wireless seismic node with a 2 Hz triaxial geophone, IP68 protection and 3-channel 32-bit acquisition for high-sensitivity geophysical surveys.
It combines expandable storage, multi-constellation GNSS and long operating life for demanding land deployments.
The Ant-3CN-2Hz from GEOANT is a three-component wireless seismic node designed for geophysical exploration campaigns, seismic surveys and field data acquisition with high timing stability. It integrates a selectable 2 Hz geophone and a 32-bit three-channel Delta-Sigma acquisition architecture, enabling low-frequency recording with wide dynamic range and very low input noise.
Its IP68 enclosure, -40 C to +70 C operating range and long battery life make it suitable for extended deployments in harsh environments. The unit includes simultaneous GPS/Beidou/GLONASS GNSS for positioning and timing, expandable 32 GB to 128 GB storage and multiple sampling rates so acquisition can be matched to the survey objective.
With its compact format, fast charging and real-time or periodic 4G data transmission, the Ant-3CN-2Hz provides a reliable solution for land seismic surveys where sensitivity, repeatability and operational durability matter.
| Mechanical and power | |
|---|---|
| Weight | 2200 g (excluding spike) |
| Dimensions | 90 x 100 x 189 mm |
| Operating temperature | -40 C to +70 C |
| Ingress protection | IP68 |
| Operating life at 25 C | 7 days real-time transmission; 40 days at 24 h/day; 20 days with 4G transmission every 10 minutes; 80 days at 12 h/day |
| Charging time | 6.5 hours |
| Acquisition and timing | |
|---|---|
| Channels | 3-channel 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, 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 @ 2 ms (82.6% of Nyquist), selectable linear or minimum phase |
| 0 dB max input | 2.5 V peak |
| Equivalent input noise @12 dB | 0.5 uV @ 0.25 ms / 0.2 uV @ 2 ms / 0.14 uV @ 4 ms |
| Instantaneous dynamic range @12 dB | 118.9 dB @ 0.25 ms / 126.8 dB @ 2 ms / 130 dB @ 4 ms |
| Total dynamic range | 145 dB |
| Timing standard | <1 ppm |
| Timing accuracy | +-10 us, GPS disciplined |
| Storage | Expandable from 32 GB to 128 GB |
| Built-in GNSS | Simultaneous GPS / Beidou / GLONASS positioning and timing |
| Gain accuracy | <1% |
| Selectable geophone | 5Hz | 5S | 2Hz |
|---|---|---|---|
| Natural frequency | 5 +-7.5% | 5 +-7.5% | 2 +-15% |
| DC resistance | 1850 +-5% | 13300 +-5% | 6400 +-10% |
| Sensitivity (open circuit) | 80 +-5% | 230 +-7.5% | 260 +-15% |
| Damping | 0.7 +-7.5% | 0.7 +-7.5% | 0.7 +-15% |
| Distortion | <=0.2% | <=0.35% | <=3% |
| Spurious frequency | >=170 | >=120 | >=90 |
| Effective frequency range | 0.2 to 1000 | 0.2 to 300 | 0.1 to 300 |
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