otf(start=480, end=510, time=2.5, delay=5.0, mode='LINEAR', alpha = 0.0, offset=0.0, name='pshell-test')

"""
nr_loops=N
loop_count = 0
while loop_count < nr_loops:
    otf(start=520, end=580, time=1, delay=2.0, mode='CIRC +', offset=-9.0, name='pshell-test')
    .
    .
    .
    loop_count = loop_count + 1
"""