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Adding new driver for SG384 (#318)
* add new driver for SG384 * Update SG384.py changed units to unit
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‎qcodes/instrument_drivers/stanford_research/SG384.py‎

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from qcodes import VisaInstrument, validators as vals
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class SRS_SG384(VisaInstrument):
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"""
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This is the code for SG384 RF Signal Generator
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Status: beta version
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Includes the essential commands from the manual
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"""
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def __init__(self, name, address, reset=False, **kwargs):
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super().__init__(name, address, terminator='\n', **kwargs)
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# signal synthesis commands
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self.add_parameter(name='frequency',
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label='Frequency',
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unit='Hz',
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get_cmd='FREQ?',
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set_cmd='FREQ {:.3f}',
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get_parser=float,
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vals=vals.Numbers(min_value=9.5e5,
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max_value=4.05e9))
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self.add_parameter(name='phase',
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label='Carrier phase',
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unit='deg',
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get_cmd='PHAS?',
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set_cmd='PHAS {:.1f}',
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get_parser=float,
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vals=vals.Numbers(min_value=-360, max_value=360))
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self.add_parameter(name='amplitude_LF',
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label='Power of BNC output',
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unit='dBm',
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get_cmd='AMPL?',
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set_cmd='AMPL {:.2f}',
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get_parser=float,
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vals=vals.Numbers(min_value=-47, max_value=13))
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self.add_parameter(name='amplitude_RF',
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label='Power of type-N RF output',
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unit='dBm',
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get_cmd='AMPR?',
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set_cmd='AMPR {:.2f}',
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get_parser=float,
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vals=vals.Numbers(min_value=-110, max_value=16.5))
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self.add_parameter(name='amplitude_HF',
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label='Power of RF doubler output',
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unit='dBm',
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get_cmd='AMPH?',
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set_cmd='AMPH {:.2f}',
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get_parser=float,
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vals=vals.Numbers(min_value=-10, max_value=13))
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self.add_parameter(name='amplitude_clock',
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label='Rear clock output',
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unit='Vpp',
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get_cmd='AMPC?',
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set_cmd='AMPC {:.2f}',
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get_parser=float,
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vals=vals.Numbers(min_value=0.4, max_value=1.00))
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self.add_parameter(name='noise_mode',
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label='RF PLL loop filter mode',
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get_cmd='NOIS?',
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set_cmd='NOIS {}',
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val_mapping={'Mode 1': 0,
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'Mode 2': 1})
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self.add_parameter(name='enable_RF',
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label='Type-N RF output',
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get_cmd='ENBR?',
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set_cmd='ENBR {}',
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val_mapping={'OFF': 0,
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'ON': 1})
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self.add_parameter(name='enable_LF',
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label='BNC output',
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get_cmd='ENBL?',
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set_cmd='ENBL {}',
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val_mapping={'OFF': 0,
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'ON': 1})
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self.add_parameter(name='enable_HF',
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label='RF doubler output',
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get_cmd='ENBH?',
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set_cmd='ENBH {}',
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val_mapping={'OFF': 0,
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'ON': 1})
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self.add_parameter(name='enable_clock',
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label='Rear clock output',
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get_cmd='ENBC?',
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set_cmd='ENBC {}',
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val_mapping={'OFF': 0,
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'ON': 1})
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self.add_parameter(name='offset_clock',
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label='Rear clock offset voltage',
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unit='V',
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get_cmd='OFSC?',
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set_cmd='OFSC {}',
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get_parser=float,
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vals=vals.Numbers(min_value=-2, max_value=2))
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self.add_parameter(name='offset_rearDC',
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label='Rear DC offset voltage',
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unit='V',
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get_cmd='OFSD?',
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set_cmd='OFSD {}',
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get_parser=float,
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vals=vals.Numbers(min_value=-10, max_value=10))
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self.add_parameter(name='offset_bnc',
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label='Low frequency BNC output',
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unit='V',
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get_cmd='OFSL?',
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set_cmd='OFSL {}',
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get_parser=float,
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vals=vals.Numbers(min_value=-1.5, max_value=1.5))
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# Modulation commands
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self.add_parameter(name='modulation_coupling',
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label='External modulation input coupling',
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get_cmd='COUP?',
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set_cmd='COUP {}',
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val_mapping={'AC': 0,
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'DC': 1})
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self.add_parameter(name='FM_deviation',
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label='Frequency modulation deviation',
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unit='Hz',
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get_cmd='FDEV?',
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set_cmd='FDEV {:.1f}',
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get_parser=float,
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vals=vals.Numbers(min_value=0.1, max_value=32e6))
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self.add_parameter(name='modulation_function',
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label='Modulation function for AM/FM/PhiM',
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get_cmd='MFNC?',
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set_cmd='MFNC {}',
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val_mapping={'Sine': 0,
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'Ramp': 1,
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'Triangle': 2,
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'Square': 3,
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'Noise': 4,
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'External': 5})
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self.add_parameter(name='enable_modulation',
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get_cmd='MODL?',
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set_cmd='MODL {}',
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val_mapping={'OFF': 0,
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'ON': 1})
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self.add_parameter(name='modulation_rate',
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get_cmd='RATE?',
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set_cmd='RATE {:.6f}',
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get_parser=float,
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vals=vals.Numbers(min_value=1e-6, max_value=50e3))
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self.add_parameter(name='modulation_type',
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label='Current modulation type',
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get_cmd='TYPE?',
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set_cmd='TYPE {}',
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val_mapping={'AM': 0,
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'FM': 1,
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'Phi': 2,
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'Sweep': 3,
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'Pulse': 4,
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'Blank': 5,
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'IQ': 6})
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self.connect_message()

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