High-resolution Seismic Data Acquisition System

This extremely versatile high-resolution seismic data acquisition
system can be configured from 4 to 32 channels, all operating synchronously up to 2,000
samples per second. The system is available in a variety of configurations:
♦ A field version, DAS6102, with graphic VGA display and keypad, packaged in a portable, compact,
rugged, weatherproof heavy duty plastic box; mass medium: HDD or CFC.
♦ An economical field version, DAS6102c, without display and keypad, packaged in a portable,
compact, rugged, weatherproof heavy duty plastic box; mass medium: HDD or CFC
♦ An industrial version, SML6102, packaged in a weatherproof enclosure with or without display
and keypad.
♦ A strong-motion accelerograph, SMLA6102, which includes internal force-balanced accelerometers
and an optional rotational seismometer to record up to all six degrees of freedom.
The system has a unique time management circuit which maintains accurate real time, and keeps
the programmable sampling rates precisely synchronous with the real time marks. Re-indexing
of data is never required. The time system does not require continuous or frequent references
to GPS to maintain accuracy. The typical GPS access interval is once every 12 - 24 hours.