3D LAND GEOPHONE WITH USB INTERFACE MOD. GEMINI-2 2Hz sensors Compact-size New GPS option ...NOT ONLY HVSR Gemini-2 is a compact device for HVSR, MASW and Vibration Analysis: a single waterproof case with an integrated low frequency, high performing 3D-geophone assembly (with real 2Hz sensors properly coupled) and a powerful true 24 bit data acquisition board with USB port for external PC. APPLICATIONS: • HVSR • SURFACE WAVES (active and passive methods, Rayleigh & Love waves analysis with external trigger option) • ACTIVE SEISMICS (with external trigger option) • VIBRATION ANALYSIS & MONITORING • HOLISURFACE® (data processing with third-party software) The GPS option also guarantees georeferencing and timing of the Gemini; additional Gemini units can be further synchronized. Through Gemini USB interface and the related data acquisition software your PC becomes a perfect, high performance instrument for both data recording and postprocessing analysis. Software available in: English - French - Spanish - Italian P.A.S.I. S.R.L. — Via Galliari 5/E — 10125 Torino - Italy tel. +39 (0)11 6507033 - [email protected] - www.pasige

TECHNICAL SPECIFICATIONS GEMINI-2 DATA ACQUISITION BOARD Data Output Format SAF (Sesame ASCII Format) / SEG2 (.dat) Nat. Resonance Frequency Sensibility Internal Resistance Damping Harmonic Distortion Insulating Resistance Working Temperature < 0.2% > 10 MQ from -25°C to +55°C Sensor Clamping Dimensions automatic when not in use Diam. 128 mm h. 175mm (spike excl.) P.A.S.I. S.R.L. — Via Galliari 5/E — 10125 Torino - Italy tel. +39 (0)11 6507033 - [email protected] - www.pasigeophysics.com Specifications subject to change without notice