Python: Lock-in Amplifier
Written by Paul Cracknell
Updated at December 22nd, 2020
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Example Python script to implement the Lock-in Amplifier
#
# pymoku example: Basic Lock-in Amplifier
#
# This example demonstrates how you can configure the lock-in amplifier
# instrument
#
# (c) 2019 Liquid Instruments Pty. Ltd.
#
from pymoku import Moku
from pymoku.instruments import LockInAmp
# Use Moku.get_by_serial() or get_by_name() if you don't know the IP
m = Moku.get_by_name('Moku')
try:
i = m.deploy_or_connect(LockInAmp)
# Configure the two DAC outputs to provide the R (magnitude) and
# demodulation (local-oscillator in this case, see below) outputs.
# Give the main ('R') channel 100x gain.
i.set_outputs('R', 'demod')
i.set_gain('main', 100)
# Demodulate at 1MHz (internally-generated) with a 100Hz, 2nd-order
# (6dB / octave) LPF.
i.set_demodulation('internal', 1e6)
i.set_filter(100, 2)
finally:
m.close()