start = time.time()
#for i in range(20): alpha.moveRel(0.1 if i < 10 else -0.1)
"""
for i in frange(0.0, 1.0, 0.1):
    alpha.write(i)
    alpha.waitReady(-1)
for i in frange(0.9, 0.0, -0.1):
    alpha.write(i)
    alpha.waitReady(-1)
"""

#v=frange(0.0, 1.0, 0.1) +  frange(0.9, 0.0, -0.1)

v=frange(0.0, 1.0, 0.1)
vscan (alpha, current, v)

print time.time() - start