Keysight 34410A/34411A
+DMM: Digital Multimeter
++
The 34410A/34411A are 6.5 digit DMM that support measurement of voltage, current, resistance, + capacitance, temperature, and + frequency.
+Two-wire as well as four-wire measurements are possible.
+The instruments can be driven either via GPIB, USB or Ethernet LAN.
+ """ + + def __init__(self): + EmptyDevice.__init__(self) + + self.shortname = "Keysight3441xA" + + self.port_manager = True + self.port_types = ["GPIB", "USB", "TCPIP"] + self.port_identifications = [ + "Agilent Technologies,34410A", + "Agilent Technologies,34411A", + "Keysight Technologies,34410A", + "Keysight Technologies,34411A", + ] + + self.port_properties = { + "timeout": 10, # needed for 100 NPLC setting as it needs ~5s to computer + } + + # this dictionary connects modes to commands. The modes will be displayed to the user in the field 'Mode' + self.modes = { + "Voltage DC": "VOLT:DC", + "Voltage AC": "VOLT:AC", + "Current DC": "CURR:DC", + "Current AC": "CURR:AC", + "2W-Resistance": "RES", + "4W-Resistance": "FRES", + "Frequency": "FREQ", + "Period": "PER", + "Diode": "DIOD", + "Continuity": "CONT", + "Capacitance": "CAP", + "Temperature": "TEMP", + } + + # this dictionary sets the unit of each mode + self.mode_units = { + "Voltage DC": "V", + "Voltage AC": "V", + "Current DC": "A", + "Current AC": "A", + "2W-Resistance": "Ohm", + "4W-Resistance": "Ohm", + "Frequency": "Hz", + "Period": "s", + "Diode": "", + "Continuity": "", + "Capacitance": "F", + "Temperature": "deg", + } + + self.nplc_types = { + "Very Fast (0.01)": 0.01, + "Fast (0.1)": 0.1, + "Medium (1.0)": 1.0, + "Slow (10.0)": 10.0, + "Very slow (100.0)": 100.0, + } + + def set_GUIparameter(self): + return { + "Mode": list(self.modes.keys()), + "NPLC": list(self.nplc_types.keys()), + "Range": ["Auto", "As is"], + "Trigger Slope": ["POS", "NEG"], + # internal trigger is called IMMediate because triggering is done automatically immediately as soon as possible + "Trigger Source": ["IMM", "EXT"], + "Auto-Zero": ["On", "Once", "Off"], + # T.Unit will be used to overwrite placeholder "deg" set in __init__ + "Temperature Unit": ["C", "F", "K"], + "Display": ["On", "Off"], + } + + + def get_GUIparameter(self, parameter: dict): + self.mode = parameter["Mode"] + self.range = parameter["Range"] + self.nplc = parameter["NPLC"] + self.trigslope = parameter["Trigger Slope"] + self.trigsource = parameter["Trigger Source"] + self.autozero = parameter["Auto-Zero"] + self.tempunit = parameter["Temperature Unit"] + self.display = parameter["Display"] + + self.port_string = parameter["Port"] + + # here, the variables and units are defined, based on the selection of the user + # we have as many variables as channels are selected + # we add the channel name to each variable, e.g "Voltage DC" + self.variables = [self.mode] + + # In case temperature is measured, do not use the general unit "deg" from the dictionary with initialization but the one chosen in GUI + if self.mode == "Temperature": + self.units = [self.tempunit] + else: + self.units = [self.mode_units[self.mode]] + + # True to plot data + self.plottype = [True] + + # True to save data + self.savetype = [True] + + def initialize(self): + # once at the beginning of the initialization; STATUS:PRESET to reset registers + self.port.write("STAT:PRES") + + # can be used for text on lower instrument display + # self.port.write(":DISP:WIND2:TEXT \"DRIVEN BY SWEEPME\"") + + # reset all values + self.port.write("*CLS") + + # control-Beep off + self.port.write("SYST:BEEP:STAT OFF") + + # setting the chosen unit for temperature measurement + if self.mode == "Temperature": + self.port.write("UNIT:TEMP %s" % self.tempunit) + + def deinitialize(self): + # control-Beep on + self.port.write("SYST:BEEP:STAT ON") + + def configure(self): + # Set Mode and AUTO Range + if self.mode in ["Temperature", "Frequency", "Period", "Diode", "Continuity"] or self.range == "As is": + # setting range left out for modes without any range; also if range = "As is" was chosen + self.port.write("CONF:%s" % self.modes[self.mode]) + else: + self.port.write("CONF:%s %s" % (self.modes[self.mode], self.range)) + + # Speed + if self.mode not in ["Voltage AC", "Current AC", "Frequency", "Period", "Diode", "Continuity", "Capacitance"]: + # NPLC only supported in DC Volts, DC Current, 2W- and 4W-Resistance, Temperature + self.port.write(":SENS:%s:NPLC %s" % (self.modes[self.mode], self.nplc_types[self.nplc])) + + # Trigger + # setting slope of trigger + self.port.write("TRIG:SLOP %s" % self.trigslope) + # setting source for triggering + self.port.write("TRIG:SOUR %s" % self.trigsource) + + # Auto-Zero + if self.mode not in [ + "Voltage AC", + "Current AC", + "Frequency", + "Period", + "Diode", + "Continuity", + "Capacitance", + "4W-Resistance", + ]: + # NPLC only supported in DC Volts, DC Current, 2W-Resistance, Temperature + self.port.write(":SENS:%s:ZERO:AUTO %s" % (self.modes[self.mode], self.autozero)) + + # Display + if self.display == "Off": + self.port.write(":DISP:WIND1:STAT 0") + self.port.write(":DISP:WIND2:STAT 0") + + def unconfigure(self): + if self.display == "Off": + # We switch Displays on again if it was switched off + self.port.write(":DISP:WIND1:STAT 1") + self.port.write(":DISP:WIND2:STAT 1") + + def measure(self): + # triggers a new measurement + self.port.write("READ?") + + def call(self): + # here we read the response from the "READ?" request in 'measure' + answer = self.port.read() + return [float(answer)]