Connecting to SRS 830 by Stanford Research Systems in Python

Instrument Card

SR830 Lock-In Amplifier provide high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal

Device Specification: here

Manufacturer card: STANFORD RESEARCH SYSTEMS

Stanford Research Systems is a maker of general test and measurement instruments. The company was founded in 1980, is privately held, and is not affiliated with Stanford University. Stanford Research Systems manufactures all of their products at their Sunnyvale, California facility.

• Headquarters: Sunnyvale, California
• Yearly Revenue (millions, USD): 24.9
• Vendor Website: here

Connect to the SRS 830 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.

InstrumentKit

To connect to a SRS 830 Lock-In Amplifier using Instrumentkit, you can use the following code:

import instrumentkit as ik

# Connect to the lock-in amplifier
srs = ik.srs.SRS830.open_gpibusb('/dev/ttyUSB0', 1)

# Set the lock-in frequency
srs.frequency = 1000 * ik.units.hertz

# Take a measurement with a sample rate of 1Hz and 10 samples
data = srs.take_measurement(1, 10)

This code imports the instrumentkit library and uses the open_gpibusb method from the ik.srs.SRS830 module to connect to the lock-in amplifier. The open_gpibusb method takes the device path ('/dev/ttyUSB0') and the GPIB address (1) as arguments.

Once connected, you can set the lock-in frequency using the frequency property of the srs object. In this example, the frequency is set to 1000 Hz.

Finally, you can use the take_measurement method of the srs object to take a measurement. This method takes the sample rate (1 Hz) and the number of samples (10) as arguments and returns the measurement data.