Connecting to SR 570 by Stanford Research Systems in Python

Instrument Card

The SR570 is a low-noise current preamplifier capable of current gains as large as 1 pA/V. High gain and bandwidth, low noise, and many convenient features make the SR570 ideal for a variety of photonic, low temperature and other measurements.

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 SR 570 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.

PyMeasure

from pymeasure.adapters import VISAAdapter
from pymeasure.instruments.sr570 import SR570

# Create a VISA adapter for the instrument
adapter = VISAAdapter("GPIB0::1::INSTR")

# Connect to the SR 570 Preamplifier
preamplifier = SR570(adapter)

# Set the sensitivity to 1e-9
preamplifier.sensitivity = 1e-9

# Set the filter type to '6dB Highpass'
preamplifier.filter_type = '6dB Highpass'

# Set the lowpass frequency to 1 Hz
preamplifier.low_freq = 1

# Set the highpass frequency to 0.03 Hz
preamplifier.high_freq = 0.03

# Enable the bias voltage
preamplifier.enable_bias()

# Enable the offset current
preamplifier.enable_offset_current()

# Clear any overload condition
preamplifier.clear_overload()

# Blank the frontend output
preamplifier.blank_front()

# Disconnect from the instrument
preamplifier.disconnect()

This script connects to the SR 570 Preamplifier using a VISA adapter, sets various settings such as sensitivity, filter type, and frequency, enables the bias voltage and offset current, clears any overload condition, and blanks the frontend output. Finally, it disconnects from the instrument.