#####################################################################
# #
# quad_monitor.py #
# #
# Copyright 2013, Monash University #
# #
# This file is part of the labscript suite (see #
# http://labscriptsuite.org) and is licensed under the Simplified #
# BSD License. See the license.txt file in the root of the project #
# for the full license. #
# #
#####################################################################
from .UnitConversionBase import *
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class quad_monitor(UnitConversion):
base_unit = 'V'
derived_units = ['A', 'Gcm']
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def __init__(self,calibration_parameters = {'A_per_V':20.032, 'Gcm_per_A':1.88679, 'A_offset':0.0968-0.14}):
self.parameters = calibration_parameters
self.parameters.setdefault('A_per_V',20.032)
self.parameters.setdefault('Gcm_per_A',1.88679)
self.parameters.setdefault('A_offset',0.0968-0.14)
UnitConversion.__init__(self,self.parameters)
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def A_to_base(self,amps):
volts = (amps - self.parameters['A_offset'])/self.parameters['A_per_V']
return volts
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def A_from_base(self,volts):
amps = volts * self.parameters['A_per_V'] + self.parameters['A_offset']
return amps
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def Gcm_to_base(self,gauss_per_cm):
volts = self.A_to_base(gauss_per_cm/self.parameters['Gcm_per_A'])
return volts
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def Gcm_from_base(self,volts):
gauss_per_cm = self.parameters['Gcm_per_A'] * self.A_from_base(volts)
return gauss_per_cm