diff options
Diffstat (limited to 'qolab')
| -rw-r--r-- | qolab/hardware/multimeter/hp_34401.py | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/qolab/hardware/multimeter/hp_34401.py b/qolab/hardware/multimeter/hp_34401.py index ad11614..468e966 100644 --- a/qolab/hardware/multimeter/hp_34401.py +++ b/qolab/hardware/multimeter/hp_34401.py @@ -1,27 +1,58 @@ from qolab.hardware.basic import BasicInstrument from qolab.hardware.multimeter import MultimeterSCPI from qolab.hardware.scpi import SCPI_PROPERTY +from pyvisa import constants as pyvisa_constants class HP_34401(MultimeterSCPI): """ HP 34401 multimeter (same as Agilent) """ """ rm = pyvisa.ResourceManager() - instr=rm.open_resource('ASRL/dev/ttyUSB0::INSTR', baud_rate = 9600) + instr=rm.open_resource('ASRL/dev/ttyUSB0::INSTR') """ - def __init__(self, resource, *args, baud_rate=9600, data_bits=8, parity=None, stop_bits=1, timeout=1, **kwds): + def __init__(self, resource, *args, **kwds): super().__init__(resource, *args, **kwds) - self.config['Device model']='hp 34401' - # self.resource.read_termination='\n' - self.deviceProperties.update({}) + self.config['Device model']='HP 34401' + self.resource.read_termination = '\r\n' + self.resource.baud_rate = 9600 + self.resource.data_bits = 8 + self.resource.parity = pyvisa_constants.Parity.none + self.resource.stop_bits = pyvisa_constants.StopBits.one + self.deviceProperties.update({'Function'}) - measurement = SCPI_PROPERTY(scpi_prfx='SYSTem:REMote\n read', ptype=float, doc='Report current measurement', no_setter=True) + Function = SCPI_PROPERTY(scpi_prfx='SENSe:FUNCtion', ptype=str, doc=""" + Current measurement function (Voltmeter DC/AC, Currentmeter DC/AC, etc. + Important! When assigning, string should be quoted, i.e. use: + Function=\'"VOLT:DC"\' + + Possible values: + "VOLTage:DC", same as "VOLT" + "VOLTage:DC:RATio" + "VOLTage:AC" + "CURRent:DC", same as "CURR" + "CURRent:AC" + "RESistance" (2-wire ohms) + "FRESistance" (4-wire ohms) + "FREQuency" + "PERiod" + "CONTinuity" + "DIODe" + """ + ) + + def toRemote(): + self.write("SYSTem:REMote") + + def toLocal(): + self.write("SYSTem:LOCal") + + Reading = SCPI_PROPERTY(scpi_prfx='SYSTem:REMote\n read', ptype=float, doc='Report current measurement', no_setter=True) if __name__ == '__main__': import pyvisa print("testing") rm = pyvisa.ResourceManager() print(rm.list_resources()) - instr=rm.open_resource('ASRL/dev/ttyUSB0::INSTR', baud_rate = 9600) + instr=rm.open_resource('ASRL/dev/ttyUSB0::INSTR') multimeter = HP_34401(instr) print('------ Header start -------------') print(str.join('\n', multimeter.getHeader())) |