Connecting to DS345 by Stanford Research Systems in Python

Instrument Card

The DS345 Function Generator is a full-featured 30 MHz synthesized function generator that uses an innovative Direct Digital Synthesis (DDS) architecture. It generates many standard waveforms with excellent frequency resolution (1 µHz), and has versatile modulation capabilities including AM, FM, Burst, PM and frequency sweeps. It also generates arbitrary waveforms with a fast 40 Msample/s update rate.

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 DS345 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 DS345 Function Generator using Instrumentkit, you can use the following Python script:

import instrumentkit as ik
import instrumentkit.devices.srs as srs
import instrumentkit.units as u

# Connect to the DS345 Function Generator
srs345 = srs.SRS345.open_gpib('/dev/ttyUSB0', 1)

# Set the output frequency to 1 MHz
srs345.frequency = 1 * u.MHz

# Get the offset voltage
offset_voltage = srs345.offset

# Set the output function to triangle
srs345.function = srs345.Function.triangle

This script imports the necessary modules from Instrumentkit (instrumentkit), as well as the specific module for the SRS DS345 Function Generator (instrumentkit.srs). It also imports the units module (instrumentkit.units) for specifying the frequency and voltage units.

The script then connects to the DS345 Function Generator using the open_gpib method, specifying the device path (/dev/ttyUSB0) and the GPIB address (1).

After connecting, it sets the output frequency to 1 MHz by assigning the desired frequency to the frequency property of the srs345 object.

Next, it retrieves the offset voltage by accessing the offset property of the srs345 object.

Finally, it sets the output function to triangle by assigning the srs345.Function.triangle value to the function property of the srs345 object.