Electronic Load Example
Control a Siglent SDL1000X electronic load using PyVISA to perform discharge testing and voltage measurements over Ethernet.
This examples features a SDL1000X electronic load from Siglent, connected via Ethernet. The load is connected to a battery or capacitor bank and measures its voltage before, during, and after a 5-second discharge test at 3 A.
import pyvisa
import time
try:
inst = pyvisa.ResourceManager().open_resource("TCPIP0::192.168.1.50::inst0::INSTR")
# Measure initial voltage
voltage = float(inst.query("MEASure:VOLTage?"))
print(f"Initial voltage: {voltage}V")
# Set constant current mode and current value
inst.write("SOURce:FUNCtion:MODE CURRent")
inst.write("SOURce:CURRent:LEVel:IMMediate 3")
inst.write("INPut:STATe ON")
# Measure voltage during operation
for i in range(4):
time.sleep(1)
voltage = float(inst.query("MEASure:VOLTage?"))
print(f"During operation voltage {i+1}: {voltage}V")
# Wait remaining time and turn off
time.sleep(1)
inst.write("INPut:STATe OFF")
# Measure final voltage
voltage = float(inst.query("MEASure:VOLTage?"))
print(f"Final voltage: {voltage}V")
finally:
inst.close()How is this guide?
