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› Seismic Explorations
30
A6000S
SUPPORTED INVESTIGATION
Seismic refraction investigation
Seismic riflession investigation
Seismic tomography
Down-hole / Cross-hole
M.A.S.W. / S.A.S.W. / Re.Mi.
Passive seismic acquisition
Seismic vibration monitoring
Nakamura method
SPECIFICATIONS
• Converters: 24 bit resolution, sigma-delta
technology
Dynamic range: 144 dB (theoretical)
•
Maximum distortion: +/-0.0010%
•
Band width: 2Hz-30KHz
•
Common mode rejection: 110 dB at 60 Hz
•
Diaphony: -120dB at 20 Hz
•
Noise threshold of the programmable am-
•
plifier 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: 1/30, 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
• Interfaces available: LAN, USB, VGA
• Channels: configurations of 12, 24 or 36
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: inside an internal FLASH memory
(up to 3GB available) and/or on removable
pen-drive USB
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:
1.5A
• Display: LCD 10.4” with touch-screen, optical
bonding
• Sizes and weight: 40.4x17.4x33 cm, 5 Kg (cables
and sensors excluded)
• Environmental conditions: -20/80°C
• Operative System: Windows Embedded
Standard 2009
• Display optical bounding