Basic driver for the Agilent 33220A Function Generator

lantz/drivers/agilent/__init__.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+"""
+    lantz.drivers.agilent
+    ~~~~~~~~~~~~~~~~~~~~~
+
+    :company: Agilent.
+    :description: Chemical analysis, life sciences and diagnostics.
+    :website: http://www.agilent.com/
+
+    ---
+
+    :copyright: 2015 by Lantz Authors, see AUTHORS for more details.
+    :license: BSD,
+
+"""
+
+from .a33220a import A33220A
+
+__all__ = ['A33220A']

lantz/drivers/agilent/a33220a.py

@@ -0,0 +1,94 @@
+from __future__ import division
+
+from lantz.messagebased import MessageBasedDriver
+from lantz import Action
+from lantz import Feat, DictFeat
+# from lantz import Q_
+
+import numpy as np
+
+
+class A33220A(MessageBasedDriver):
+    """The agilent 33220a function generator"""
+
+    MANUFACTURER_ID = '0x0957'
+    MODEL_CODE = '0x0407'
+
+    DEFAULTS = {'USB': {'write_termination': '\n',
+                        'read_termination': '\n',
+                        'timeout': 2000,
+                        'encoding': 'ascii'
+                        }}
+    @Feat()
+    def idn(self):
+        return self.query('*IDN?')
+
+    @Feat()
+    def func(self):
+        """ Return the function type.
+            The options are:
+                -SINusoid
+                -SQUare
+                -RAMP
+                -PULSe
+                -NOISe
+                -DC
+                -USER
+        """
+        return self.query('FUNC?')
+
+    @func.setter
+    def func(self,functype):
+        """ Sets the function type.
+        """
+        self.write('FUNC {}'.format(functype))
+
+    @Feat(units='Hz')
+    def freq(self):
+        """ Return the frequency in hertz.
+        """
+        return self.query('FREQ?')
+
+    @freq.setter
+    def freq(self,value):
+        """ Set the frequency.
+        """
+        self.write('FREQ {} Hz'.format(value))
+
+    @Feat(units='V')
+    def volt(self):
+        """ Return the amplitude.
+        """
+        return self.query('VOLT?')
+
+    @volt.setter
+    def volt(self,value):
+        """ Sets the output voltage.
+        """
+        self.write('VOLT {} VPP'.format(value))
+
+    @Feat(units='V')
+    def offset(self):
+        """ Return the offset.
+        """
+        return self.query('VOLT:OFFS?')
+
+    @offset.setter
+    def offset(self,value):
+        """ Sets the offset
+        """
+        self.write('VOLT:OFFS {}'.format(value))
+
+    @Action(values={True:'ON', False:'OFF'})
+    def output(self,value):
+        """ Turns the output on or off.
+        """
+        self.write('OUTP {}'.format(value))
+
+if __name__ == '__main__':
+    with A33220A.via_usb() as fgen:
+        fgen.func = 'SQU'
+        fgen.freq = 2 * kilohertz
+        fgen.volt = 1.2 * volt
+        fgen.offset = 1 * volt
+        fgen.output(True)