Connecting to Keysight 3456A by HP in Python

Instrument Card

3456A 6 1/2 Digit Digital Multimeter

Device Specification: here

Manufacturer card: HP

Keysight Technologies, or Keysight, is an American company that manufactures electronics test and measurement equipment and software

• Headquarters: USA
• Yearly Revenue (millions, USD): 5420
• Vendor Website: here

Demo: Record voltage over time with an Agilent 34401A multimeter

Connect to the Keysight 3456A 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

import instrumentkit as ik

# Connect to the multimeter
multimeter = ik.keysight.Keysight3456A.open_gpibusb("/dev/ttyUSB0", 22)

# Set the measurement mode to DC voltage
multimeter.mode = multimeter.Mode.dcv

# Perform a measurement
measurement = multimeter.measure()

# Print the measurement result
print("Measurement: {}".format(measurement))

This script first imports the instrumentkit module and then uses the open_gpibusb method of the ik.keysight.Keysight3456A class to connect to the multimeter. You’ll need to replace "/dev/ttyUSB0" with the appropriate device path for your system.

Next, it sets the measurement mode to DC voltage using the mode property of the multimeter object. In this example, we’re using the Mode.dcv enum value.

Finally, it performs a measurement using the measure method of the multimeter object and prints the result.

Note that this script assumes you have already installed the instrumentkit library. If not, you can install it using pip install instrumentkit.