test.py

import pyvisa

from HP_6626A_VISA import *
        

visa_rm = pyvisa.ResourceManager()

phy_sup1 = HP_6626A_VISA(visa_rm.open_resource(f"GPIB0::{3}::INSTR"))

psu = phy_sup1.ch1

def safe_hw():
    print("Safeing HW...")
    psu.setState(False)

print(f"Supply at '{phy_sup1.visa_inst}' is '{phy_sup1.identify()}'")

# check supply can supply 100mA at 10V
assert(psu.capabilites['max_voltage'] >= 10)
assert(psu.capabilites['max_current'] >= 0.1)
assert(psu.capabilites['max_power'] >= 10*0.1)

# set sw limits to protect DUT
psu.soft_voltage_range=[0,10]
psu.soft_current_range=[0,0.1]

try:
    # init supply of and at 0V/0A
    psu.setState(0)
    psu.setVoltage(0)
    psu.setCurrent(0)

    psu.setVoltage(1)
    psu.setCurrent(.1)
    psu.setState(1)

    print(f"Voltage set point: {psu.getVoltageSetpoint()}V")
    print(f"Current set point: {psu.getCurrentSetpoint()}A")
    print(f"Actual Voltage: {psu.getVoltage():0.3f}V")
    print(f"Actual Current: {psu.getCurrent()*1000:0.2f}mA")
    print(f"Actual Power: {psu.getPower()*1000.0:0.2f}mW")

    if (psu.getStatus() != psu_mode.CV): raise Exception(f"Supply is not in CV mode, but instead is in {psu.getStatus()}. Is it current limiting or faulted?")

    psu.setState(False)
except Exception as e:
    print("EXCEPTION!")
    safe_hw()
    raise(e)