Seismic data channel(s):  3

ADC resolution:  32 bits

Sample intervals:  0.25, 0.5, 1, 2, 4, 8,10, 20 ms

Self-noise Level:  Whole frequency band lower than the NHNM curve，5s~1Hz lower than the NLNM curve

Operating temperature:  -40℃ ~ +70℃

Waterproof:  IP67

Physical Size:  φ158mm × 160mm (w/o spike)

Weight:  2.8 kg (Including internal battery and spike)

Data Storage:  32GB (can be expanded to 64GB)

Operating Life@25℃: 30 days Continuous / 60 days Segmented (12hours ON/12hours SLEEP)

External Power Supply:  7V~15V DC (single supply)

Bluetooth QC:  Available

Data Harvesting:  USB 3.0

Charging Temperature Range:  +3˚C ~ +45˚C

Frequency Bandwidth:  0.2Hz~150Hz

Distortion:  <0.1% @12Hz, (0° ~ 10°) tilt，(0°~3°) horizontal tilt

Sensitivity:  200V/m/s (5.08 V/in/s)

Remark:  All parameters are specified at +22℃ in the vertical position and horizontal position for horizontal geophone unless otherwise stated.

(@ 2ms sample interval, 31.25 Hz, 25°C, unless otherwise indicated)

Maximum Input Signal:  ±2.5Vpeak @ Gain 0dB

Instantanteous Dynamic Range:  120dB@ Gain 0dB

Common Mode Rejection:  >100dB

Gain Accuracy:  < 1%

GPS Time Standard:  1 ppm

Timing Accuracy:  ± 10µs, GPS Disciplined

Cross Feed:  < -110dB

Inter-channel Phase Offset:  <0.1ms

Transverse Vibration Rejection:  Better than 1%

Inter-channel Amplitude Coherence:  5%

System Dynamic Range:  140dB

Frequency Response:  0~1652Hz