#+TITLE: Equipment used to make the measurements
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* Geophone
L22

* Speedgoat
- ADC: 16bits
- DAC: 16bits

* Voltage amplifier

#+name: fig:voltage_amplifier
#+caption: Picture of the voltage amplifier DLPVA
#+attr_latex: :scale 1
[[file:./img/DLPVA_W_R2.jpg]]


*Specifications*:
- Switchable gain up to 100 dB (x 100,000)
- Bandwidth DC to 100 kHz
- DC-drift 0.6 µV/°C
- Input noise down to 0.4 nV/√Hz
- Switchable AC/DC-coupling
- Local and remote control
- Input impedance up to 1 TΩ

The documentation of the voltage amplifier is accessible [[file:documents/dlpva_datasheet.pdf][here]].

The exact model is DLPVA-100-B-D