Model: SEIS-DAS-CH4
◎ Acquisition Channels: 4-channel synchronous acquisition + 1-channel barometric pressure acquisition;
◎ A/D Conversion: 24-bit;
◎ Input Impedance: 5 kΩ;
◎ Input Range: ±10 V;
◎ Dynamic Range: >135 dB @ 100 sps;
◎ Sampling Rates: 4000, 2000, 1000, 500, 200, 100, 50, 40, 20, 10, 5, 1 sps;
◎ Data Format: MiniSEED (convertible to SAC and other formats);
◎ Internal Storage: 32 GB removable TF card, expandable to 64 GB or larger capacity TF cards;
◎ Clock & Positioning: GPS PPS synchronized clock, maximum clock error less than 1/2 sampling interval; supports Precise Point Positioning (PPP) with positioning accuracy better than 1 m;
◎ Self-Calibration: Supports pulse calibration and sinusoidal calibration; user-configurable calibration parameters;
◎ Operating Voltage: 9–36 V;
◎ Communication Interfaces: Supports multiple methods including TCP/IP, FTP, NTP, RS232, USB, 5G, Wi-Fi, and Bluetooth; supports network access;
◎ Seismometer Control: Mass centering (unlock) and mass locking functions; 3-channel zero-position detection;
◎ Auxiliary Functions: Scheduled acquisition; status alarm; event detection.
