Connecting to Keysight 3478A by HP in Python

Instrument Card

The HP 3478A 5.5 digit DMM with HP-IB interface

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 3478A 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

Here is a Python script that uses Pymeasure to connect to a Keysight 3478A Multimeter:

from pymeasure.adapters import VISAAdapter
from pymeasure.instruments.hp.hp3478a import HP3478A

# Create a VISA adapter for communication
adapter = VISAAdapter("GPIB0::22::INSTR")

# Create an instance of the HP3478A instrument
multimeter = HP3478A(adapter)

# Connect to the instrument
multimeter.open()

# Perform measurements
voltage = multimeter.measure_DCV()
current = multimeter.measure_DCI()
resistance = multimeter.measure_R2W()

# Print the measurement results
print("Voltage: ", voltage)
print("Current: ", current)
print("Resistance: ", resistance)

# Close the connection to the instrument
multimeter.close()

This script creates a VISA adapter using the GPIB address of the instrument. Then, it creates an instance of the HP3478A instrument using the adapter. The script opens the connection to the instrument, performs measurements of DC voltage, DC current, and resistance, and prints the measurement results. Finally, it closes the connection to the instrument.