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ISTI - Model GEOthree Series -Low Power Seismic Digitizer / Recorder
GEObit introduces the GEOthree series high resolution 3+1 analog seismic channels telemetry digitizer/recorder. The size of the instrument is only 168 X 106 X 68 mm. The power consumption is only 0.9 W for 3 channels. The available sampling rate is 100 to 1000 SPS and optional lower sampling rates are supported. A built-in GPS receiver combined with an ultra-accurate DPLL unit, providing time drift 10e-9 sec, ensures timing stability even in the absence of a GPS signal. NTP timing is also available. The unit is very flexible and accepts several types of analog front end units so that any type of seismic sensor can be connected. Additionally, it provides eight extra-low resolution and rate analog inputs for seismometer mass position monitoring, or any other environmental parameter monitoring.
Eight TTL command outputs are supported for seismometer control or for any other external device control. Typically the digitizer supports a differential variable gain preamplifier. Our force balance sensor front end is also supported, providing a wide-band response (10 sec – 98 Hz) and high sensitivity 1500 V/m/s, by connecting a C100 sensor. Acquisition parameters and operation modes can be set from the user–friendly web interface.
The unit operates in continuous mode, triggered mode or both, and data are streamed through different data ports. Local data storage is selectable, as well as log file information. The unit supports advanced functionality, implemented from a combination of trusted open-source software components. Because of its open-source architecture, it is able to run any custom application thus providing a next day solution to the user. The hardware is based on an embedded ARM9 400MHz ARM Linux board. The data are stored in a mini-SEED format on the microSD card or on a removable USB stick. The instrument supports a 10/100 Ethernet port and a debug port. FTP, SFTP, SSH are also available. The state of health is transmitted over UDP packets upon request.
- High-resolution digitizer
- Four extra analog inputs
- Four TTL command lines
- Low power consumption
- Dimensions 168x106x68 mm
- GPS time / Precision DPLL
- 100-1000 samples per second
- 3+1 seismic channels
- Ultra low noise preamplifier
- Embedded Open Source OS
- Embedded SeedLink Server
- Embedded Earthworm Server
- Continuous/Trigger recording
- Advanced functionality
- Smart Network Operation