Markus Zolliker
41baf5805f
- includes all changes up to 'fix inheritance order' from git_mlz 6a32ecf34224c559ae558efd7c0d20078d09463b Change-Id: Ie3ceee3dbd0a9284b47b1d5b5dbe262eebe8f283
49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# *****************************************************************************
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Module authors:
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# Daniel Margineda <daniel.margineda@psi.ch>
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# *****************************************************************************
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"""SIGNAL RECOVERY SR7270: lOCKIN AMPLIFIER FOR AC SUSCEPTIBILITY"""
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from secop.core import FloatRange, HasIodev, \
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Parameter, Readable, StringIO, TupleOf
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class SR7270(StringIO):
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# end_of_line = '\x00' #termination line from maanual page 6.8
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end_of_line = '\n'
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class XY(HasIodev, Readable):
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value = Parameter('X, Y', datatype=TupleOf(FloatRange(unit='V'), FloatRange(unit='V')))
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freq = Parameter('exc_freq_int', FloatRange(0.001,250e3,unit='Hz'), readonly=False, default=100)
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iodevClass = SR7270
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def read_value(self):
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reply = self.sendRecv('XY.').split('\x00')[-1]
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return reply.split(',')
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def read_freq(self):
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reply = self.sendRecv('OF.').split('\x00')[-1]
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return reply
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def write_freq(self,value):
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self.sendRecv('OF. %g' % value)
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return value
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