Connecting to HMP 4040 by Rohdes&Schwarz in Python

Instrument Card

The Rohde & Schwarz HMP4040 power supply belongs to the HMP series and has 4 channels and a power of 384W. All four channels have an output voltage of 0-32V and an output current of 0-10A.

Device Specification: here

Manufacturer card: ROHDES&SCHWARZ

Rohde & Schwarz GmbH & Co KG is an international electronics group specializing in the fields of electronic test equipment, broadcast & media, cybersecurity, radiomonitoring and radiolocation, and radiocommunication.

• Headquarters: Munich, Germany
• Yearly Revenue (millions, USD): 2500
• Vendor Website: here

Demo: Measure a solar panel IV curve with a Keithley 2400

Connect to the HMP 4040 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 import HMP4040

# Create a VISA adapter for communication
adapter = VISAAdapter("TCPIP::192.168.1.1::INSTR")

# Connect to the HMP4040 Power Supply
power_supply = HMP4040(adapter)

# Perform operations on the power supply
power_supply.beep()  # Emit a single beep from the instrument

power_supply.control_method = "REM"  # Set the control method to remote

voltage = power_supply.voltage  # Get the output voltage
print("Output Voltage:", voltage)

current = power_supply.current  # Get the output current
print("Output Current:", current)

power_supply.voltage = 5.0  # Set the output voltage to 5.0 V
power_supply.current = 1.0  # Set the output current to 1.0 A

power_supply.output_enabled = True  # Enable the output

# Disconnect from the power supply
power_supply.disconnect()

This script connects to the HMP4040 Power Supply using a VISA adapter and performs various operations such as emitting a beep, setting the control method to remote, getting and setting the output voltage and current, enabling the output, and finally disconnecting from the power supply.