Calibration layout schematic (Courtesy of Mark Products)

Frequency generator- Velleman 0-1MHz

PC PC-Lab software panel display of 0.1Hz sine wave

Oscilloscope with one channel displaying input signal to calibration coil (sinusoid 5V p-p) and the other channel showing response of instrument (~5mVp-p)

Single, vertical component Geophone Mark Products L4- Technical Sheet in pdf format.