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from qolab.hardware.basic import BasicInstrument
from qolab.hardware.power_supply import PowerSupplySCPI
class KeysightE3612A(PowerSupplySCPI):
""" Keysight E3612A power supply """
def __init__(self, resource, *args, **kwds):
super().__init__(resource, *args, **kwds)
self.resource.read_termination='\n'
self.config['Device model'] = 'Keysight E3612A'
self.numberOfChannels = 3
self.deviceProperties = {'OpMode', };
self.channelProperties = {'IsOn', 'Regulation', 'Vout', 'Vlimit', 'Iout', 'Ilimit', }
def getOpMode(self):
"""
Queries power supply operation mode, returns OFF|PAR|SER|TRAC
OFF stands for independent channels
"""
qstr = f'OUTP:PAIR?'
rstr = self.query(qstr)
return( rstr )
def setOpMode(self, val):
"""
Sets power supply operation mode, returns OFF|PAR|SER|TRAC
OFF stands for independent channels
"""
cmnd = f'OUTP:PAIR {val}'
rstr = self.write(cmnd)
def setChanOn(self, chNum):
""" Power up channel output """
self.write(f'OUTP ON,(@{chNum})')
def setChanOff(self, chNum):
""" Power down channel output """
self.write(f'OUTP OFF,(@{chNum})')
@BasicInstrument.tsdb_append
def getChanIsOn(self, chNum):
""" Queries channel output state """
qstr = f'OUTP? (@{chNum})'
rstr = self.query(qstr)
return( bool(float(rstr)) )
@BasicInstrument.tsdb_append
def getChanRegulation(self, chNum):
"""
Queries channel output regulation
0 - The output is off and unregulated
1 - The output is CC (constant current) operating mode
2 - The output is CV (constant voltage) operating mode
3 - The output has hardware failure
"""
qstr = f'STAT:QUES:INST:ISUM{chNum}:COND?'
rstr = self.query(qstr)
return( int(rstr) )
@BasicInstrument.tsdb_append
def getChanVout(self, chNum):
qstr = f'MEAS:VOLT? (@{chNum})'
rstr = self.query(qstr)
return( float(rstr) )
@BasicInstrument.tsdb_append
def getChanVlimit(self, chNum):
qstr = f'SOUR:VOLT? (@{chNum})'
rstr = self.query(qstr)
return( float(rstr) )
@BasicInstrument.tsdb_append
def setChanVlimit(self, chNum, val):
cmnd = f'SOURCe:VOLT {val},(@{chNum})'
rstr = self.write(cmnd)
@BasicInstrument.tsdb_append
def getChanIout(self, chNum):
qstr = f'MEAS:CURR? (@{chNum})'
rstr = self.query(qstr)
return( float(rstr) )
@BasicInstrument.tsdb_append
def getChanIlimit(self, chNum):
qstr = f'SOURce:CURR? (@{chNum})'
rstr = self.query(qstr)
return( float(rstr) )
@BasicInstrument.tsdb_append
def setChanIlimit(self, chNum, val):
cmnd = f'SOURCe:CURR {val},(@{chNum})'
rstr = self.write(cmnd)
if __name__ == '__main__':
import pyvisa
print("testing")
rm = pyvisa.ResourceManager()
print(rm.list_resources())
instr=rm.open_resource('USB0::10893::4354::MY61001869::0::INSTR')
ps = KeysightE3612A(instr)
print('------ Header start -------------')
print(str.join('\n', ps.getHeader()))
print('------ Header ends -------------')
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