› Seismic Explorations 32 SYSMATRACK SUPPORTED INVESTIGATION Seismic refraction investigation Seismic riflession investigation Down-hole / Cross-hole M.A.S.W. / S.A.S.W. / Re.Mi. 24 bit seismograph for seismic prospecting with refraction, reflection survey, active and passive MASW (Re.Mi.), SASW, Down-hole, Cross-hole methods. The unit is equipped with acquisition card with 24 bit resolution and is available in the 12-channel version that can be extended to 24. Two 24- pole connectors for the seismic cables of 12 channels each, the connector for the starter, the external 12 V supply and the USB interface to connect the notebook or PC for the management of the instrumentation (not supplied) are located on the front panel. All parameters relative to the type of seismic survey that is carried out easily and quickly, are set up through the Sysmatrack Manager software, that can be installed on any PC or notebook connected to the acquisition unit. SPECIFICATIONS • Converters: 24 bit resolution, sigma- delta technology • Dynamic range: 144 dB (theoretical) • Maximum distortion: +/-0.0010% • Band width: 2Hz-30KHz • Common mode rejection: • Diaphony: -120dB at 20 Hz • Noise threshold of the programmable amplifier 27nV • Trigger precision: 1/30 of the sampling time • Maximum range of inlet signal: +/-5V • Inlet impedance at 1000 samples/second: 20Mohm • Amplification levels: 0 dB, 6 dB, 12 dB, 18 dB, 24 dB, 30 dB, 36 dB that can be set singularly for each channel or for groups of channels that can be organized freely • Anti-alias filter: -3dB, 80% of Nyquist frequency, -80dB • Pre-trigger time: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 50, 100, 200, 300, 400, 500ms • Sampling intervals: 1/15, 1/7.5, 1/3.75, 0.5, 1.0, 2.0, 10.0, 20.0 ms • Number of samples per event: set from 1024 to 43520 with increases of 512 • Delay: not available • Interfaces available: USB (it requires a control PC) • Channels: configurations of 12, 24 channels. Possibility to use from 1 to the maximum number of channels installed for each acquisition • Test on instruments: only in the laboratory • Internal self-calibration of the converters prior to each acquisition • Digital filters: selected automatically based on the sampling frequency • Geophone tests: automatic check to identify interruptions of cables or broken geophones or in short circuit. Real time visualization of the signals coming from the geophones • Data storage: in the mass memories of the control PC • Trigger: positive, negative (optional with contact lock) with threshold regulated through a software • Data format: SEG-2 standard (32-bit long integer) or ASCII • Power supply: 12V DC, supplied by a specific re-chargeable power box. Average absorption: 250mA • Environmental conditions: -20/80 °C • Compatible Operative Systems: Windows XP, Windows Vista, Windows7 of 32bit mae-srl.it/go/sysmatrack
› Mae 33 ACCESSORIES VIBRALOG A6000S SYSMATRACK 24-BIT Seismic tomography KIT • S3 3D down-hole sensor • • • S5 5D down-hole sensor • • S3S 3D 4.5 Hz surface sensor • • • S3S2 3D 2 Hz surface sensor • • • S3SA 3D accelerometric surface sensor • • SSA Accelerometer • • Seismic Cable 12 socket • • Geophones 4,5/10/14 HZ • • Piezoelcetric seismic sensor • • ESP2 seismic source • • USB Printer • • SOFTWARE PS-LAB Seismic refraction data elaboration Down-hole / Cross-hole data elaboration • •
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