Connecting to Keysight 8722ES by Agilent in Python

Instrument Card

The Agilent 8722ES Vector Network Analyzer (VNA) allows users to test a RF device’s amplitude and phase with one instrument. It works within 50 MHz to 40 GHz and enables the complete characterization of a device or network.

Device Specification: here

Manufacturer card: AGILENT

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

Connect to the Keysight 8722ES 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.instruments import visa
from pymeasure.instruments.agilent import Agilent8722ES

# Connect to the instrument
resource_manager = visa.ResourceManager()
instrument = Agilent8722ES(resource_manager.open_resource('GPIB0::1::INSTR'))

# Set the start and stop frequencies
instrument.start_frequency = 1e6  # 1 MHz
instrument.stop_frequency = 1e9  # 1 GHz

# Set the number of scan points
instrument.scan_points = 101

# Perform a single scan
instrument.scan_single()

# Get the frequencies and data from the scan
frequencies = instrument.frequencies
data_magnitude = instrument.data_magnitude
data_phase = instrument.data_phase

# Print the frequencies and data
for frequency, magnitude, phase in zip(frequencies, data_magnitude, data_phase):
    print(f"Frequency: {frequency} Hz, Magnitude: {magnitude} dB, Phase: {phase} degrees")

# Disconnect from the instrument
instrument.disconnect()

This script connects to the instrument using the VISA library, sets the start and stop frequencies, and performs a single scan. It then retrieves the frequencies, magnitude, and phase data from the scan and prints them out. Finally, it disconnects from the instrument.

Note: Make sure to install the necessary dependencies (pymeasure, pyvisa, and numpy) before running the script.