Example Python script to implement the Laser Lock Box

For more Python examples, please refer to this link.

#
# Moku example: Basic Laser Lock Box
#
# This example demonstrates how you can configure the Laser Lock Box 
# Instrument and monitor the signals at Input 1 and Input 2.
#
# (c) 2023 Liquid Instruments Pty. Ltd.
#
from moku.instruments import LaserLockBox

# Launch Laser Lock Box and connect to your device via IP
i = LaserLockBox('192.168.###.###', force_connect=False)

try:
    # SetChannel 1 and 2 to DC coupled, 1 Mohm impedance, and 400 mVpp range
    i.set_frontend(1, coupling='DC', impedance='1MOhm',gain='0dB')
    i.set_frontend(2, coupling='DC', impedance='1MOhm',gain='-20dB')

    # Configure the scan oscillator to a 10 Hz 500 mVpp positive ramp
    # signal from Output 1
    i.set_scan_oscillator(enable=True,shape='PositiveRamp',
        frequency=10,amplitude=0.5,output='Output1')

    # Configure the demodulation signal to Local oscillator with 1 MHz and
    # 0 degrees phase shift
    i.set_demodulation('Internal',frequency=1e6,phase=0)

    # Configure a 4th order low pass filter with 100 kHz corner frequency
    i.set_filter(shape='Lowpass',low_corner=100e3,order=4)

    # Set the fast PID controller to -10 dB proportional gain and
    # intergrator crossover frequency at 3 kHz
    i.set_pid_by_frequency(channel=1, prop_gain=-10, int_crossover=3e3)
    # Set the slow PID controller to -10 dB proportional gain and
    # intergrator crossover frequency at 50 Hz
    i.set_pid_by_frequency(channel=2,prop_gain=-10,int_crossover=50))


except Exception as e:
    print(f'Exception occurred: {e}')
finally:
    # Close the connection to the Moku device
    # This ensures network resources are released correctly
    i.relinquish_ownership()