Connecting to SR 850 by Stanford Research Systems in Python

Instrument Card

SR850 — 100 kHz DSP lock-in amplifier

Device Specification: here

Manufacturer card: STANFORD RESEARCH SYSTEMS

Flexible rental terms for your short & long term projects. Choose from over 5000 models. Top quality electronic test equipment available for rent from over 80 top manufacturers

• Headquarters: USA
• Yearly Revenue (millions, USD): 20
• Vendor Website: here

Connect to the SR 850 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.

Instrumental

Here is an example Python script that uses Instrumental to connect to a SR 850 Lock-in Amplifier:

import instrumental

# Connect to the SR 850 Lock-in Amplifier
sr850 = instrumental.SR850()

# Set the reference frequency to 1 kHz
sr850.set_reference_frequency(1e3)

# Get the reference frequency
ref_freq = sr850.get_reference_frequency()
print("Reference Frequency:", ref_freq)

# Set the sensitivity to 10 nV/fA
sr850.set_sensitivity(sr850.Sensitivity.x10nV_fA)

# Get the sensitivity
sensitivity = sr850.get_sensitivity()
print("Sensitivity:", sensitivity)

# Close the connection
sr850.close()

This script connects to the SR 850 Lock-in Amplifier, sets the reference frequency to 1 kHz, gets the reference frequency, sets the sensitivity to 10 nV/fA, gets the sensitivity, and then closes the connection.