
Node Type Seabed Seismometer
Frequency bandwidth:SEIS-OBN-S3(3Hz~250Hz)、SEIS-OBN-S1(1Hz~200Hz);
Self noise:The whole frequency range is lower than NHNM Curve;
Complete machine sensitivity:200V/m/s(±5%);
Time stability:≤1ms/month @4℃(Built-in atomic clock);
Forward Gain:1、32、64 is Configurable;
Amplitude consistency between Channels:<5%;
Phase difference between channels:<0.1ms;
Crosstalk suppression between channels:>100db;
Lateral vibration suppression:better than 0.1%;
Overall Power Consumption:Autonomous working mode<1W@100sps; Acoustic communication working mode<10W@100sps;
Sample rate:100,250,500,1000,2000sps;
Lowest parasitic resonance frequency:>300Hz;
Calibration method:Pulse self-calibration;
External power supply: 9V, single power charging;
Status display:LED+PC;
Working time:>30 days;
Dynamic range:>120 dB;
Storage:32GB(pluggable SD card,the storage can extend to 64 GB or more);
Data format:Raw,Mseed;
Interface:Ethernet、RS232;
Working temperature:-25℃~+55℃;
Operating depth(Max):≥30m;
OBN Size:φ390×118 mm;
Weight(Built-in 175Ah lithium battery):About 18.5Kg(Aluminum alloy shell)、20Kg(Titanium alloy shell)、24.3Kg(Stainless steel casing).





