import numpy as N
# connect PTS RF source to ADC card, set to generate a few MHz
# result should be a fulle period of sine/cosine
def experiment():
    #step = 0.36 # for PTS 500
    step = 0.225 # for PTS 310
    for i in list(xrange(1)): # number of periods
        samples = 2048
        print samples
        for phase in N.arange(0,360,step):
            #phase=ph
            e=Experiment()
            #e.set_frequency(1e6,0)
            e.wait(20e-6)
            e.set_description("phase", phase)
            e.set_description("i", i)
            e.set_phase(0.0)
            #e.loop_start(1)
            e.wait(20e-6)
            e.record(samples, 20e6,sensitivity=10)
            e.set_phase(phase)
            e.wait(20e-6)
            #e.loop_end()
            e.record(samples, 20e6,sensitivity=10)
            yield e