def pulse4(*args):
''' send pulse sweep generated by Keithley 2461 to the sample using 4 contact points via Synapse Switch Box.
This command takes only 8 input parameters:
The first 4 parameters defines the contact points in the Synapse Switch Box;
The last 4 parameters defines pulse sweep to be generated by the Keithley 2461.
Command syntax:
pulse source_1_high source_2_high source_1_low source_2_low current width timeDelay numberOfPulses
'''
if len(args) == 8:
if len(args[:4]) != len(set(args[:4])):
raise Exception(
"Cannot use the same Synapse terminal more than once in this command."
)
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh1 = whichSynapseTerminal(args[0])
synapseHigh1.rawAsynchronousMoveTo("Source high")
synapseHigh2 = whichSynapseTerminal(args[1])
synapseHigh2.rawAsynchronousMoveTo("Source high")
synapseLow1 = whichSynapseTerminal(args[2])
synapseLow1.rawAsynchronousMoveTo("Source low")
synapseLow2 = whichSynapseTerminal(args[3])
synapseLow2.rawAsynchronousMoveTo("Source low")
sleep(1) #ensure above finished before statement below
generateCurrentPulseFromKeithley(args[4], args[5], args[6] / 2,
args[7])
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
else:
raise Exception(
"Number of parameters is wrong, require 6 or 8 arguments.")
def probeRes2(*args):
''' measure resistance of the sample using Keithley 2461 using 2 contact points via Synapse Switch Box.
This command takes only 7 input parameters:
The first 2 defines the contact points in the Synapse Switch Box;
The last 5 parameters defines applied current, measuring voltage limit, auto range (0 for OFF, 1 for ON), range value, and NPLC in Keithley 2461.
Command syntax:
probeRes source_high source_low current complianceVoltage autoRange rangeValue nplc
Note, that not all measurement ranges are allowed, for a forbidden value, it will choose the next higher value.
'''
if len(args) == 7:
if args[0] == args[1]:
raise Exception(
"Cannot use the same Synapse terminal for both high and low.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
sleep(1)
#configure synapse
synapseHigh = whichSynapseTerminal(args[0])
synapseHigh.rawAsynchronousMoveTo("Source high")
synapseLow = whichSynapseTerminal(args[1])
synapseLow.rawAsynchronousMoveTo("Source low")
sleep(1) #ensure above finished before statement below
voltage = measureVoltage(args[2], args[3], args[4], args[5], 'OFF',
args[6])
print "2-point"
print "measured voltage = " + str(float(
voltage.split(",")[1])) + ", thus resistance = " + str(
float(voltage.split(",")[1]) / float(args[2]))
sleep(1) #ensure above finished before statement below
synapse_setall.rawAsynchronousMoveTo("STV")
print "Probe Resistance completed."
else:
raise Exception("Number of parameters is wrong, require 7 arguments.")
def pulse2(*args):
''' send pulse sweep generated by Keithley 2461 to the sample using 2 contact points via Synapse Switch Box.
This command takes only 6 input parameters:
The first 2 parameters defines the contact points in the Synapse Switch Box;
The last 4 parameters defines pulse sweep to be generated by the Keithley 2461.
Command syntax:
pulse source_high source_low current width timeDelay numberOfPulses
'''
if len(args) == 6:
if args[0] == args[1]:
raise Exception(
"Cannot use the same Synapse terminal for both high and low.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh = whichSynapseTerminal(args[0])
synapseHigh.rawAsynchronousMoveTo("Source high")
synapseLow = whichSynapseTerminal(args[1])
synapseLow.rawAsynchronousMoveTo("Source low")
sleep(1) #ensure above finished before statement below
generateCurrentPulseFromKeithley(args[2], args[3], args[4] / 2,
args[5])
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
else:
raise Exception("Number of parameters is wrong, require 6 arguments.")
def pulse(*args, **kwargs):
''' send pulse sweep generated by Keithley 2461 to the sample via Synapse Switch Box.
This command takes only 6 or 8 input parameters:
The first 2 (in 6 parameters case) or 4 (in 8 parameters case) parameters defines the contact points in the Synapse Switch Box;
The last 4 parameters defines pulse sweep to be generated by the Keithley 2461.
Command syntax:
pulse source_high source_low current width timeDelay numberOfPulses
for 6 input parameters
pulse source_1_high source_2_high source_1_low source_2_low current width timeDelay numberOfPulses
for 8 input parameters
'''
if len(args) == 6:
if args[0]==args[1]:
raise Exception("Cannot use the same Synapse terminal for both high and low.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh = whichSynapseTerminal(args[0])
synapseHigh.rawAsynchronousMoveTo("Source high")
synapseLow = whichSynapseTerminal(args[1])
synapseLow.rawAsynchronousMoveTo("Source low")
sleep(1) #ensure above finished before statement below
if kwargs.get('KEITHLEY_SOURCE_MODE', curr) == curr or str(JythonServerFacade.getInstance().getFromJythonNamespace('KEITHLEY_SOURCE_MODE')) == curr:
generateCurrentPulseFromKeithley(args[2], args[3], args[4]/2, args[5])
elif kwargs.get('KEITHLEY_SOURCE_MODE', curr) == volt or str(JythonServerFacade.getInstance().getFromJythonNamespace('KEITHLEY_SOURCE_MODE')) == volt:
generateVoltagePulseFromKeithley(args[2], args[3], args[4]/2, args[5])
else:
raise Exception("Keithley source mode %s is not supported" % KEITHLEY_SOURCE_MODE)
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
elif len(args)== 8:
if len(args[:4])!=len(set(args[:4])):
raise Exception("Cannot use the same Synapse terminal more than once in this command.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh1 = whichSynapseTerminal(args[0])
synapseHigh1.rawAsynchronousMoveTo("Source high")
synapseHigh2 = whichSynapseTerminal(args[1])
synapseHigh2.rawAsynchronousMoveTo("Source high")
synapseLow1 = whichSynapseTerminal(args[2])
synapseLow1.rawAsynchronousMoveTo("Source low")
synapseLow2 = whichSynapseTerminal(args[3])
synapseLow2.rawAsynchronousMoveTo("Source low")
sleep(1)#ensure above finished before statement below
if kwargs.get('KEITHLEY_SOURCE_MODE', curr) == curr or str(JythonServerFacade.getInstance().getFromJythonNamespace('KEITHLEY_SOURCE_MODE')) == curr:
generateCurrentPulseFromKeithley(args[4], args[5], args[6]/2, args[7])
elif kwargs.get('KEITHLEY_SOURCE_MODE', curr) == volt or str(JythonServerFacade.getInstance().getFromJythonNamespace('KEITHLEY_SOURCE_MODE')) == volt:
generateVoltagePulseFromKeithley(args[4], args[5], args[6]/2, args[7])
else:
raise Exception("Keithley source mode %s is not supported" % KEITHLEY_SOURCE_MODE)
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
else:
raise Exception("Number of parameters is wrong, require 6 or 8 arguments.")
def pulseAndMeas(*args):
''' send pulse sweep generated by Keithley 2461 to the sample via Synapse Switch Box, and return the measured data.
This command takes only 7 or 9 input parameters:
The first 2 (in 7 parameters case) or 4 (in 9 parameters case) parameters defines the contact points in the Synapse Switch Box;
The next 4 parameters defines pulse sweep to be generated by the Keithley 2461.
The last parameter defines NPLC (must be between 0.01 and 10)
Command syntax:
pulseAndMeas source_high source_low current width timeDelay numberOfPulses nplc
for 7 input parameters
pulseAndMeas source_1_high source_2_high source_1_low source_2_low current width timeDelay numberOfPulses nplc
for 9 input parameters
'''
if len(args) == 7:
if args[0]==args[1]:
raise Exception("Cannot use the same Synapse terminal for both high and low.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh = whichSynapseTerminal(args[0])
synapseHigh.rawAsynchronousMoveTo("Source high")
synapseLow = whichSynapseTerminal(args[1])
synapseLow.rawAsynchronousMoveTo("Source low")
sleep(1) #ensure above finished before statement below
data=generatePulseAndMeasureFromKeithley(args[2], args[3], args[4]/2, args[5], args[6])
print data
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
elif len(args)== 9:
if len(args[:4])!=len(set(args[:4])):
raise Exception("Cannot use the same Synapse terminal more than once in this command.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh1 = whichSynapseTerminal(args[0])
synapseHigh1.rawAsynchronousMoveTo("Source high")
synapseHigh2 = whichSynapseTerminal(args[1])
synapseHigh2.rawAsynchronousMoveTo("Source high")
synapseLow1 = whichSynapseTerminal(args[2])
synapseLow1.rawAsynchronousMoveTo("Source low")
synapseLow2 = whichSynapseTerminal(args[3])
synapseLow2.rawAsynchronousMoveTo("Source low")
sleep(1)#ensure above finished before statement below
data=generatePulseAndMeasureFromKeithley(args[4], args[5], args[6]/2, args[7], args[8])
print data
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
else:
raise Exception("Number of parameters is wrong, require 7 or 9 arguments.")
def synapseOpen():
'''set all the nodes to Open circuit
'''
synapse_setall.rawAsynchronousMoveTo("Open circuit")
def synapseGround():
'''set all the nodes to STV
'''
synapse_setall.rawAsynchronousMoveTo("STV")
def pulse(*args):
''' send pulse sweep generated by Keithley 2461 to the sample via Synapse Switch Box.
This command takes only 6 or 8 input parameters:
The first 2 (in 6 parameters case) or 4 (in 8 parameters case) parameters defines the contact points in the Synapse Switch Box;
The last 4 parameters defines pulse sweep to be generated by the Keithley 2461.
Command syntax:
pulse sc_kh sc_kl current width timeDelay numberOfPulses
for 6 input parameters
pulse sc_a_kh sc_b_kh sc_a_kl sc_b_kl current width timeDelay numberOfPulses
for 8 input parameters
'''
if len(args) == 6:
if args[0] == args[1]:
raise Exception(
"Cannot use the same Synapse terminal for both high and low.")
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh = whichSynapseTerminal(args[0])
synapseHigh.rawAsynchronousMoveTo("Source high")
synapseLow = whichSynapseTerminal(args[1])
synapseLow.rawAsynchronousMoveTo("Source low")
sleep(0.2) #ensure above finished before statement below
#configure keithley
keithleyReset(kei2461)
keithleySourceCurrentMode(kei2461)
keithleySenseVoltageMode(kei2461)
keithleyAutoRange(kei2461)
keithleyConfigurePulse(kei2461, args[2], args[3], args[4], args[5])
keithleyStartSweep(kei2461)
keithleyWait(kei2461)
sleep(0.2) #ensure above finished before statement below
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
elif len(args) == 8:
if len(args[:4]) != len(set(args[:4])):
raise Exception(
"Cannot use the same Synapse terminal more than once in this command."
)
synapse_setall.rawAsynchronousMoveTo("Open circuit")
#configure synapse
synapseHigh1 = whichSynapseTerminal(args[0])
synapseHigh1.rawAsynchronousMoveTo("Source high")
synapseHigh2 = whichSynapseTerminal(args[1])
synapseHigh2.rawAsynchronousMoveTo("Source high")
synapseLow1 = whichSynapseTerminal(args[2])
synapseLow1.rawAsynchronousMoveTo("Source low")
synapseLow2 = whichSynapseTerminal(args[3])
synapseLow2.rawAsynchronousMoveTo("Source low")
sleep(0.2) #ensure above finished before statement below
#configure keithley
keithleyReset(kei2461)
keithleySourceCurrentMode(kei2461)
keithleySenseVoltageMode(kei2461)
keithleyAutoRange(kei2461)
keithleyConfigurePulse(kei2461, args[4], args[5], args[6], args[7])
keithleyStartSweep(kei2461)
keithleyWait(kei2461)
sleep(0.2) #ensure above finished before statement below
synapse_setall.rawAsynchronousMoveTo("STV")
print "Pulse sweep completed."
else:
raise Exception(
"Number of parameters is wrong, require 6 or 8 arguments.")