Merge pull request #47 from ljsplitthoff/E36313A

Keysight E36313A power source

qcodes_contrib_drivers/drivers/Keysight/Keysight_E36313A.py

@@ -0,0 +1,82 @@
+from qcodes import VisaInstrument
+from qcodes import Instrument
+from qcodes.instrument.channel import InstrumentChannel
+
+
+class E36313AChannel(InstrumentChannel):
+    """
+
+    """
+    def __init__(self, parent: Instrument, name: str, chan: int) -> None:
+        """
+        Args:
+            parent: The instrument to which the channel is
+            attached.
+            name: The name of the channel
+            chan: The number of the channel in question (1-3)
+        """
+        # Sanity Check inputs
+        if name not in ['ch1', 'ch2', 'ch3']:
+            raise ValueError("Invalid Channel: {}, expected 'ch1' or 'ch2' or 'ch3'"
+                             .format(name))
+        if chan not in [1, 2, 3]:
+            raise ValueError("Invalid Channel: {}, expected '1' or '2' or '3'"
+                             .format(chan))
+
+        super().__init__(parent, name)
+
+        self.add_parameter('source_voltage',
+                           label="Channel {} Voltage".format(chan),
+                           get_cmd='VOLT? (@{:d})'.format(chan),
+                           get_parser=float,
+                           set_cmd='VOLT {{:.8G}} (@{:d})'.format(chan),
+                           unit='V')
+
+        self.add_parameter('source_current',
+                           label="Channel {} Current".format(chan),
+                           get_cmd='CURR? (@{:d})'.format(chan),
+                           get_parser=float,
+                           set_cmd='CURR {{:.8G}} (@{:d})'.format(chan),
+                           unit='A')
+
+        self.add_parameter('voltage',
+                           get_cmd='MEAS:VOLT? (@{:d})'.format(chan),
+                           get_parser=float,
+                           label='Channel {} Voltage'.format(chan),
+                           unit='V')
+
+        self.add_parameter('current',
+                           get_cmd='MEAS:CURR? (@{:d})'.format(chan),
+                           get_parser=float,
+                           label='Channel {} Current'.format(chan),
+                           unit='A')
+
+        self.add_parameter('enable',
+                           get_cmd='OUTP? (@{:d})'.format(chan),
+                           set_cmd='OUTP {{:d}} (@{:d})'.format(chan),
+                           val_mapping={'on':  1, 'off': 0})
+
+        self.channel = chan
+
+
+class E36313A(VisaInstrument):
+    """
+    This is the qcodes driver for the Keysight E36313A programmable DC power supply
+    """
+    def __init__(self, name, address, **kwargs):
+        super().__init__(name, address, terminator='\n', **kwargs)
+
+        # The E36313A supports two channels
+        for ch_num in [1, 2, 3]:
+            ch_name = "ch{:d}".format(ch_num)
+            channel = E36313AChannel(self, ch_name, ch_num)
+            self.add_submodule(ch_name, channel)
+
+        self.connect_message()
+
+    def get_idn(self):
+        IDN = self.ask_raw('*IDN?')
+        vendor, model, serial, firmware = map(str.strip, IDN.split(','))
+        IDN = {'vendor': vendor, 'model': model,
+               'serial': serial, 'firmware': firmware}
+        return IDN