Connecting to HF2LI by Zurich Instruments in Python

Instrument Card

The Zurich Instruments HF2LI is a digital lock-in amplifier covering the frequency range between DC and 50 MHz. It is the instrument of choice for the characterization of MEMS devices such as gyroscopes and for measurements in the area of microfluidics.

Device Specification: here

Manufacturer card: ZURICH INSTRUMENTS

Zurich Instruments Ltd. is a privately owned company developing and selling advanced test and measurement instruments equipped with software for dynamic signal analysis.

• Headquarters: Switzerland
• Yearly Revenue (millions, USD): 38
• Vendor Website: here

Connect to the HF2LI in Python

Read our guide for turning Python scripts into Flojoy nodes.

Flojoy

PROTOCOLS > SCPI

📄 IDN

Query a device's identity through the universal *IDN? SCPI command.

📄 MEASURE VOLTAGE

Query an instrument's measured output voltage, such as a DMM or power supply.

📄 SCPI WRITE

Write a SCPI command to a connected bench-top instrument and return the result.

QCodes Community

To connect to a HF2LI Lockin Amplifier using Qcodes Community, you can use the following Python script:

import qcodes as qc
from qcodes.instrument_drivers.zhinst import HF2LI

# Create an instance of the HF2LI instrument
hf2li = HF2LI('hf2li', 'dev204', demod=1, sigout=0, auxouts={'X': 0, 'Y': 3})

# Connect to the instrument
hf2li.connect()

# Now you can use the instrument to perform various operations
# For example, you can get the phase value
phase = hf2li.phase()
print(f"Phase: {phase} degrees")

# You can also set the phase value
hf2li.phase(45)

# You can get the gain for the X output
gain_x = hf2li.gain_X()
print(f"Gain for X output: {gain_x} V/Vrms")

# You can set the gain for the X output
hf2li.gain_X(0.5)

# Disconnect from the instrument
hf2li.disconnect()

Note: Make sure you have installed the necessary dependencies, including qcodes and zhinst.