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Our newest creation, the DAS-M, is reimagining how ERT/IP surveys are conducted in the field. This advanced and intelligent acquisition system has a modular design that lets you customize the size of your system in increments of 16 electrodes.

 

It features our patented multi-source technology, cables with 16 electrode take-outs, four isolated receiver channels, each with a 32-bit analog to digital converter, full waveform recording, radio communication, GPS timing and positioning, flexible spectral IP, and a modular design with expansion in mind.

Basic Layout

The basic DAS-M system uses one main transceiver unit, one multiplexer, and one 16 takeout cable with electrodes, plus a computer remotely controlling the whole system through a USB radio interface.

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Typical Two-Line Layout

A more typical configuration would contain two main DAS-M transceivers units, four multiplexers, and four or five cables. This gives flexibility to either have one long 80 electrode 2D line or two separate lines of 32 electrodes each, as shown on this slide. Even more lines will further enhance the capability to resolve the 3D resistivity structure of the subsurface.

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Patented Multi-Source Transmitting

Each main unit has a built in 250 watt transmitter and 4 high precision, fully independent receiver channels. 

It is possible to transmit from each DAS-M simultaneously, even from completely separate lines of electrodes, e.g. Red transmitters shown above. 

Transmitting from multiple units at once allows for greater depth without large, high power, transmitters. Transmitting and receiving between separate lines allows for extreme flexibility when working in rough terrain and urban settings where it may not be possible to run cables for traditional ERT systems.

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Expandable

The DAS-M was designed from the start with modularity and expandability in mind while reducing the need for extension cables.

 

Adding a MUX-M unit and a 16 electrode cable expands the system by up to 16 electrodes without the need for extension or dedicated signal cables. 

A second DAS-M can act in exactly the same manner as a MUX-M, but it can also allow for use of it's internal transmitter and four receiver channels for unparalleled flexibility in the field.

Can be expanded up to 255 units.

Versatile

This system was designed from the ground up to be ideal for surveys in urban settings and difficult terrain. 

Each box is light weight and easy to carry, with minimal connections required in each setup. 

Multi-Source transmitting makes previously impossible site configurations accessible, even transmitting across roads, rivers, or other impassible areas. 

The main units also support full waveform recording at 1200 samples/second on all 4 channels.

Fully independent receiver channels allow for greater flexibility in array design. 

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Radio Communication

The DAS-M uses radio communication to operate the system from a field Windows PC or Tablet via a USB radio interface.

Averaged data can be sent real-time to the control PC while full waveform data is recorded to a USB flash drive attached directly to the system.