In [47]:

    

import pyvisa
from os import path, listdir
import numpy as np
from time import sleep
import plotly.plotly as py
from plotly.graph_objs import *
from plotly.offline import download_plotlyjs, init_notebook_mode, iplot
init_notebook_mode()


    

In [2]:

    

rm = pyvisa.ResourceManager();
sim = rm.get_instrument("GPIB0::19::INSTR")
sim.ask("*IDN?")


    

    
Out[2]:





u'Stanford_Research_Systems,SIM900,s/n072619,ver3.5\n'

In [91]:

    

vmax = .2
points = 21

voltages1 = np.linspace(0, vmax, points)
voltages2 = np.linspace(vmax, -vmax, 2*points)
voltages3 = np.linspace(-vmax, 0, points)
voltages = np.append(np.append(voltages1, voltages2), voltages3)
i = []
v = []

data = Scatter(x=[],y=[])
fig = Figure(data=[data])
# iplot(fig)

for volt in voltages:
    sim.write('SNDT 1,"VOLT {}"'.format(volt))
    sleep(.25)
    sim.write('SNDT 4,"VOLT? 1"')
    itemp = sim.query('GETN? 4,12')
#     print(itemp)
    i.append(float(itemp.split('\n')[1]))
    sleep(.25)
    
    sim.write('SNDT 4,"VOLT? 3"')
    vtemp = sim.query('GETN? 4,12')
#     print(vtemp)
    v.append(float(vtemp.split('\n')[1]))
    sleep(1)
    
    data = Scatter(
        x=v,
        y=i
    )
    fig.data = [data]

iplot(fig)


    

    












    





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