def test_use_separate_VISAAdapter():
"""As a user, I want to be able to supply my own VISAAdpter with my settings
"""
# User can use their own VISAAdapter
ser = VISAAdapter('ASRL1::INSTR', baud_rate=1200, visa_library='@sim')
instr = MultiprotocolInstrument(ser)
# don't need visa_library here as this does not go to pyvisa, kwargs are ignored if provided
assert instr.adapter.connection.baud_rate == 1200
def __init__(self, resourceName, **kwargs):
adapter = VISAAdapter(resourceName, read_termination='\n')
super(ami430,
self).__init__(adapter,
"AMI superconducting magnet power supply.",
includeSCPI=True,
**kwargs)
# Read twice in order to remove welcome/connect message
self.read()
self.read()
def startup(self):
"""
Connect to source and configure voltage sweep
:return:
"""
log.info("Connecting and configuring the picoammeter ...")
adapter = VISAAdapter("GPIB0::22::INSTR",
visa_library='@py',
query_delay=0.1)
self.picoammeter = Keithley6487(adapter)
self.picoammeter.reset()
self.picoammeter.configure_sweep(self.start, self.stop, self.step,
self.delay, self.nplc, self.polarity)
log.info("Picoammeter configuration complete.")
log.info("Connecting to power supply and configuring")
adapter = VISAAdapter("GPIB0::6::INSTR", visa_library='@py')
self.power_supply = E364A(adapter)
self.power_supply.reset()
self.power_supply.apply(5, self.source_current / 1e3)
self.power_supply.enabled = "OFF"
def startup(self):
"""
Connect to source and configure voltage sweep
:return:
"""
log.info("Connecting and configuring the instrument ...")
adapter = VISAAdapter("GPIB0::22::INSTR", query_delay=0.1)
self.picoammeter = Keithley6487(adapter)
self.picoammeter.reset()
self.picoammeter.configure_sweep(self.start, self.stop, self.step,
self.delay, 1, self.polarity)
log.info("Configuration complete.")
'POLL_FREQ': POLL_FREQ,
'LCR_USB_ADDRESS': LCR_USB_ADDRESS,
'ARDUINO_PORT': ARDUINO_PORT,
'MUX_SELECT_PINS': MUX_SELECT_PINS,
'MUX_SIG_PIN': MUX_SIG_PIN}
# TODO: change way we handle the input channels
muxInputChannels = [0, 1, 2]
# ----------------------------------------------#
# initialize the multiplexer board through pyFirmata
mux = Mux(config)
# pin2 = mux.board.get_pin('d:2:o')
# setup the LCR
adapter = VISAAdapter("USB0::0x0957::0x0909::MY54202935::INSTR")
lcr = AgilentE4980(adapter)
print("LCR connected.")
# TODO: make new LCR class to make this process cleaner
lcr.reset()
lcr.aperture(LCR_MEAS_TIME) # set measurement time
lcr.frequency = LCR_AC_FREQUENCY # set AC signal frequency
lcr.ac_voltage = LCR_AC_VOLTAGE # set AC signal voltage
# initialize lists to store data
timeOut = []
ROut = []
LOut = []
COut = []
def test_visa_version():
assert VISAAdapter.has_supported_version()
def make_visa_adapter(**kwargs):
return VISAAdapter(SIM_RESOURCE, visa_library='@sim', **kwargs)
if polarity == 'Cathode':
self.write('SOUR:VOLT:SWE:STOP {:0.1f}'.format(stop))
self.write('SOUR:VOLT:SWE:STEP {:0.2f}'.format(step))
self.write('SOUR:VOLT:SWE:DEL {:0.3f}'.format(delay / 1e3))
self.write('FORM:ELEM ALL') # Include all elements in the trace data
self.write('FORM:SREG ASC'
) # Set output format of status register to ascii (decimal)
self.write('ARM:COUN {:d}'.format(int(abs((stop - start) / step) + 1)))
def start_sweep(self):
self.write("SOUR:VOLT:SWE:INIT")
self.write("INIT")
def sweep_state(self):
self.write("*CLS")
try:
resp = int(self.ask("*STB?"))
resp = resp & 0x80
except:
resp = 1
return resp
if __name__ == "__main__":
from pymeasure.adapters import VISAAdapter
adapter = VISAAdapter("GPIB0::22::INSTR", '@py')
ammeter = Keithley6487(adapter)
ammeter.reset()
def test_visa_version(): assert VISAAdapter.has_supported_version()