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from qolab.hardware.basic import BasicInstrument
from qolab.hardware.lockin import LockinSCPI
from qolab.hardware.scpi import SCPI_PROPERTY
from enum import IntEnum, EnumMeta
class TimeBaseOption(IntEnum):
AUTO=0
INT=1
class SRS_SR865A(LockinSCPI):
""" SRS SR865A lockin """
def __init__(self, resource, *args, **kwds):
super().__init__(resource, *args, **kwds)
self.config['Device model']='SRS SR865A'
self.resource.read_termination='\n'
self.deviceProperties.extend(['TimeBaseMode'])
FreqInt = SCPI_PROPERTY(scpi_prfx='FreqInt', ptype=float, doc='Internal LO frequency')
FreqExt = SCPI_PROPERTY(scpi_prfx='FreqExt', ptype=float, doc='External LO frequency', no_setter=True)
Harm = SCPI_PROPERTY(scpi_prfx='Harm', ptype=float, doc='Harmonic of the LO')
SinAmpl = SCPI_PROPERTY(scpi_prfx='SLVL', ptype=float, doc='Modulation amplitude')
SinOffset = SCPI_PROPERTY(scpi_prfx='SOFF', ptype=float, doc='Modulation offset')
EquivalentNoiseBW = SCPI_PROPERTY(scpi_prfx='ENBW', ptype=float, doc='Equivalent Noise BandWidth (it is not 3dB BW, see the manual)', no_setter=True)
TimeBaseMode = SCPI_PROPERTY(scpi_prfx='TBMODE', ptype=int, doc='10 MHz reference mode: 0 - Auto, 1 - Internal')
RefPhase = SCPI_PROPERTY(scpi_prfx='PHAS', ptype=float, doc='LO/reference phase')
Sensitivity = SCPI_PROPERTY(scpi_prfx='SCAL', ptype=int, doc="""
Sensitivity:
0: 1 V (uA), 6: 10 mV (nA), ... 27: 1 nV (fA)
1: 500 mV (nA), 7: 5 mV (nA),
2: 200 mV (nA), 8: 2 mV (nA),
3: 100 mV (nA), 9: 1 mV (nA),
4: 50 mV (nA), 10: 500 uV (pA),
5: 20 mV (nA), 11: 200 uV (pA),
""")
TimeConstan = SCPI_PROPERTY(scpi_prfx='OFLT', ptype=int, doc="""
Time constant:
0: 1 uS, 6: 1 mS, ..... , 21: 30 kS
1: 3 uS, 7: 3 mS,
2: 10 uS, 8: 10 mS,
3: 30 uS, 9: 30 mS,
4: 100 uS, 10: 100 mS,
5: 300 uS, 11: 300 mS,
""")
FilterSlope = SCPI_PROPERTY(scpi_prfx='OFSL', ptype=int, doc="""
Output Filter slope:
0: 6dB/Oct
1: 12dB/Oct
2: 18dB/Oct
3: 24dB/Oct
""")
if __name__ == '__main__':
import pyvisa
print("testing")
rm = pyvisa.ResourceManager()
print(rm.list_resources())
instr=rm.open_resource('TCPIP::192.168.0.51::INSTR')
lockin = SRS_SR865A(instr)
print('------ Header start -------------')
print(str.join('\n', lockin.getHeader()))
print('------ Header ends -------------')
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