Innovation and Reliability Since 1980

GEM – Available Options for our Systems

Options-Adding Value to Your Core System

When comparing a GEM system with other available magnetic instruments, we recommend spending some time to consider the complete range of options offered by GEM. These options can be added at time of original purchase or later to expand the capabilities of your system as your needs change or grow. Our trained personnel can help you quickly determine the solutions that meet your needs for today or tomorrow.

Options are organized in the following categories:

  • Building blocks
  • Sensor options
  • GPS options
  • GPS navigation options
  • Software solutions

After evaluating the options available, you may also want to refer to our information on System Specifications and Core Capabilities. To access this information, click here.

Building Blocks-A Modular Approach to Addressing Your Needs

GEM’s approach with options is to provide you with an expandable set of building blocks that can be combined in many ways by a trained representative to develop a solution that is customized to your needs.

Building blocks include:

  • GPS (built-in and external)
  • Fast Gradiometer
  • Fast Magnetometer
  • Gradiometer
  • Remote Control
  • VLF (3 channel)
  • Walking Gradiometer
  • Walking Magnetometer

This page provides a quick overview of the available options. If you do not see an option that you would like to include in your system, please ask. GEM also undertakes custom development projects to address the special requests of our customers.

GEM Options

Product Family Model Proton GSM-19T Overhauser GSM-19W Potassium GSMP-35 SuperGrad GSMP-20
Building Blocks
Fast gradiometer No Yes Yes Yes
Fast magnetometer No Yes Yes Yes
GPS (built-in) Yes Yes Yes Yes
GPS (external) Yes Yes Yes Yes
Gradiometer\(simultaneous) Yes Yes Yes Yes
Remote control Yes Yes Yes Yes
VLF (3 channel) Yes Yes Yes No
Walking gradiometer Yes Yes Yes No
Walking magnetometer Yes Yes Yes No
Product Family Model Proton GSM-19T Overhauser GSM-19W Potassium GSMP-35 SuperGrad GSMP-20
Sensor Options
Backpack mounted sensors Yes Yes Yes No
Horizontal / vertical staff No No Yes No
Multi-sensor 1 to 2 1 to 2 1 to 6 1 to 6
Omnidirectional magnetic sensor Yes Yes No No
Product Family Model Proton GSM-19T Overhauser GSM-19W Potassium GSMP-35 SuperGrad GSMP-20
Integrated GPS Options
DGPS post-processing (internal) Yes Yes Yes Yes
GPS Navigation with lane guidance Yes Yes Yes Yes
Real-time DGPS (internal) Yes Yes Yes Yes
Product Family Model Proton GSM-19T Overhauser GSM-19W Potassium GSMP-35 SuperGrad GSMP-20
GPS Navigation Options
GPS Board (AllStar or equivalent with time only) Yes Yes Yes Yes
GPS Board (AllStar or equivalent with lane guidance) Yes Yes Yes Yes
GPS Board (AllStar or equivalent with lane guidance and post-processing) Yes Yes Yes Yes
GPS Board (AllStar or equivalent with on-line and post-processing for GPS) Yes Yes Yes Yes
GPS Board (AllStar or equivalent with on-line and post-processing DGPS with cm accuracy) Yes Yes Yes Yes
Adaptation Kit (for all GPS Navigation options) Yes Yes Yes Yes
Product Family Model Proton GSM-19T Overhauser GSM-19W Potassium GSMP-35 SuperGrad GSMP-20
Software Solutions
GEMLinkW by GEM Yes Yes Yes Yes
Surfer 8 for Windows by Golden Software Yes Yes Yes Yes
Geophysical Processing and Interpretation by Geosoft Yes Yes Yes Yes
PotentQ Potential Field Modeling by Geophysical Software Solutions Yes Yes Yes Yes
EMIGMA by Eikon Technologies Yes Yes Yes Yes
UX-Detect for Magnetics by Geosoft Yes Yes Yes No

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