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elif version < Version.fromstring(self.class_version):
if version < Version(0, 1):
self.time = [None]*len(self.data)
self.version = str(Version(0, 1))"
955,"def c_drop(self, frequency):
'''
Capacitance of an electrode covered in liquid, normalized per unit
area (i.e., units are F/mm^2).
'''
try:
return np.interp(frequency,
self._c_drop['frequency'],
self._c_drop['capacitance']
)
except:
pass
return self._c_drop"
956,"def c_filler(self, frequency):
'''
Capacitance of an electrode covered in filler media (e.g., air or oil),
normalized per unit area (i.e., units are F/mm^2).
'''
try:
return np.interp(frequency,
self._c_filler['frequency'],
self._c_filler['capacitance']
)
except:
pass
return self._c_filler"
957,"def _upgrade(self):
""""""
Upgrade the serialized object if necessary.
Raises:
FutureVersionError: file was written by a future version of the
software.
""""""
logging.debug(""[FeedbackCalibration]._upgrade()"")
version = Version.fromstring(self.version)
logging.debug('[FeedbackCalibration] version=%s, class_version=%s',
str(version), self.class_version)
if version > Version.fromstring(self.class_version):
logging.debug('[FeedbackCalibration] version>class_version')
raise FutureVersionError(Version.fromstring(self.class_version),
version)
elif version < Version.fromstring(self.class_version):
if version < Version(0, 1):
self._c_filler = None
self._c_drop = None
self.version = str(Version(0, 1))
if version < Version(0, 2):
self.hw_version = Version(1)
self.version = str(Version(0, 2))
logging.info('[FeedbackCalibration] upgrade to version %s',
self.version)
if version < Version(0, 2):
self.hw_version = Version(1)
self.version = str(Version(0, 2))
logging.info('[FeedbackCalibration] upgrade to version %s',
self.version)
if version < Version(0, 3):
self.version = str(Version(0, 3))
logging.info('[FeedbackCalibration] upgrade to version %s',
self.version)"
958,"def force_to_voltage(self, force, frequency):
'''
Convert a force in uN/mm to voltage.
Parameters
----------
force : float
Force in **uN/mm**.
frequency : float
Actuation frequency.
Returns
-------
float
Actuation voltage to apply :data:`force` at an actuation frequency
of :data:`frequency`.
'''
c_drop = self.calibration.c_drop(frequency)
# if c_filler hasn't been set, assume c_filler = 0
if self.calibration._c_filler:
c_filler = self.calibration.c_filler(frequency)
else:
c_filler = 0
return np.sqrt(force * 1e-9/ (0.5 * (c_drop - c_filler)))"
959,"def series_capacitance(self, channel, resistor_index=None):
'''
Parameters
----------
channel : int
Analog channel index.
resistor_index : int, optional
Series resistor channel index.