Here are some of the articles that have been recently posted to the PASSCAL website:

Emlid Reach RS2/2+/3 GNSS/GPS receivers

 Emlid Reach RS2/2+/3 receivers enable georeferencing for a wide range of geoscience and geophysics applications. Survey points can be used to generate topographic data sets, to determine the position of other surveys (e.g., seismic nodal arrays, seismic refraction profiles, ground penetrating radar, electrical resistivity), or to record data collection points (e.g., sample locations).

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GNSS/GPS Receivers

Global Navigation Satellite System (GNSS) receivers sense incoming signals from the USA’s Global Positioning System (GPS) satellites and other constellations (GLONASS, Galileo, BeiDou, etc.). With signals from four or more satellites, the receivers use trilateration to determine a position.

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Dataloggers

A datalogger (also know as data acquisition system or DAS) is piece of electronic equipment which converts an input into a digital time series representation. Immense care should be taken when setting up and programming a datalogger. It is highly recommended that only experienced users program their own dataloggers and all others should consult a EPIC staff member for assistance.

While specific procedures and programming details will vary between the various types of dataloggers, there are several things that hold true when working with any datalogger.

The datalogger should be:

Batteries

Batteries are PI Supplied.

Batteries come in two main types, primary which are single use and secondary which are rechargeable.

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Controlled Sources

The Propelled Energy Generator, model: PEG-40Kg

RefTek RT 130 Datalogger

The RT130 is a 3 or 6 channel high resolution datalogger. It is low power and highly configurable for a wide range of applications and sensors. It is housed in a plastic clamshell-style enclosure which is nearly waterproof and has internal data storage in the form of two compact flash cards. The RT130 can simultaneously record to the CF cards and transmit data in near-realtime using either ethernet or serial based telemetry. It has built-in sensor controls, scheduled mass recentering, and calibration functions. The RT130 is programmed with a PalmOS program called PFC-130 via the serial port.

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Multi-Channel Dataloggers

EPIC’s current inventory of multi-channel dataloggers, which now serves as our primary system for active source surveys using geophones, is centered around the ES-3000 Geode and a 60 Channel Strata View NZXP.  The ES-3000 offers reliable performance, portability, and compatibility with EPIC’s existing multi-channel cable systems, originally designed for earlier Geometrics models.