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Ground Systems
 

QF-1005 System

3 axis magnetometers

  • Sampled at 32 sps, with disc storage for 2+ years local data storage
  • 24 bit sigma delta A/D, 8 channels
  • 100 db analog filters for 60 Hz suppression
Air conductivity sensor
  • Two 15 cm x 15 cm plates with 50 volt DC differential voltage to measure any charged particles in the local atmosphere
Geophone
  • 4 Hz geophone to help discriminate ground motion (and coil motion) from EM signals
GPS
  • GPS timing to synchronize multiple sites’ data so that adjacent sites can be subtracted for common mode noise reduction
Power
  • Battery operation (charged continuously from commercial power)
  • Operates for 2-3 days if power is interrupted.
Options for data extraction:
  • Phone modem (14,000 baud)
  • GlobalStar satellite phone (9600 baud) $1 per minute
  • WildBlue satellite Internet (100,000+ baud uplinks) $50 per mo.
  • Manual disc extraction after a quake
The Portable ULF Magnetometer

Portable Includes: Zonge ANT 4 ULF magnetometer with preamp Power Supplies (with battery) Amplifier and Low Pass Filter (12 Hz) with Electronics, Case, and Cables Calibration data base

Options Include:

  1. Padded Aluminum Carrying Case for ANT 4 and Electronics
  2. Veleman Digital Scope with Cable
  3. Laptop Computer (e.g. DELL)
  4. Data Q 10 bit, 4 channel A/D with data scquisition, scope, and playback software
  5. Earthmate GPS module with USB cable and CD-ROM program and Map data base
  6. Globalstar satellite phone with digital/power cable for data transmission
Portable Air Conductivity Sensor

Two 6x6 in. Stainless metal plates Power Supply, batteries, and case

Options Include:

  1. Digital voltmeter for simple readout
  2. Veleman Digital Scope with Cable
  3. Laptop Computer (e.g. DELL)
  4. Data Q 10 bit, 4 channel A/D with data scquisition, scope, and playback software
  5. Earthmate GPS module with USD cable and CD-ROM program and Map data base
  6. Globalstar satellite phone with digital/power cable for data transmission
 
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