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#
# This file is part of the PyMeasure package.
#
# Copyright (c) 2013-2024 PyMeasure Developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
from pymeasure.instruments import Instrument, SCPIUnknownMixin
from pymeasure.instruments.validators import truncated_range
class SG380(SCPIUnknownMixin, Instrument):
MOD_TYPES_VALUES = ['AM', 'FM', 'PM', 'SWEEP', 'PULSE', 'BLANK', 'IQ']
MOD_FUNCTIONS = ['SINE', 'RAMP', 'TRIANGLE', 'SQUARE', 'NOISE', 'EXTERNAL']
MIN_RF = 0.0
MAX_RF = 4E9
# TODO: restrict modulation depth to allowed values (depending on
# frequency)
fm_dev = Instrument.control(
"FDEV?", "FDEV%.6f",
""" A floating point property that represents the modulation frequency
deviation in Hz. This property can be set. """
)
rate = Instrument.control(
"RATE?", "RATE%.6f",
""" A floating point property that represents the modulation rate
in Hz. This property can be set. """
)
def __init__(self, adapter, name="Stanford Research Systems SG380 RF Signal Generator",
**kwargs):
super().__init__(
adapter,
name,
**kwargs
)
@property
def has_doubler(self):
"""Gets the modulation type"""
return bool(self.ask("OPTN? 2"))
@property
def has_IQ(self):
"""Gets the modulation type"""
return bool(self.ask("OPTN? 3"))
@property
def frequency(self):
"""Gets RF frequency"""
return float(self.ask("FREQ?"))
@frequency.setter
def frequency(self, frequency):
"""Defines RF frequency"""
if self.has_doubler:
truncated_range(frequency, (SG380.MIN_RF, 2 * SG380.MAX_RF))
else:
truncated_range(frequency, (SG380.MIN_RF, SG380.MAX_RF))
self.write("FREQ%.6f" % frequency)
@property
def mod_type(self):
"""Gets the modulation type"""
return SG380.MOD_TYPES_VALUES[int(self.ask("TYPE?"))]
@mod_type.setter
def mod_type(self, type_):
"""Defines the modulation type"""
if type_ not in SG380.MOD_TYPES_VALUES:
raise RuntimeError('Undefined modulation type')
elif (type_ == 'IQ') and not self.has_IQ:
raise RuntimeError('IQ option not installed')
else:
index = SG380.MOD_TYPES_VALUES.index(type_)
self.write("TYPE%d" % index)
@property
def mod_function(self):
"""Gets the modulation function"""
return SG380.MOD_FUNCTIONS[int(self.ask("MFNC?"))]
@mod_function.setter
def mod_func(self, function):
"""Defines the modulation function"""
if function not in SG380.MOD_FUNCTIONS:
index = 1
else:
index = SG380.MOD_FUNCTIONS.index(function)
self.write("MFNC%d" % index)
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