smua.nvbuffer1.clear()
smua.nvbuffer1.fillmode = smua.FILL_ONCE
smua.nvbuffer1.appendmode = 1
smua.nvbuffer1.collecttimestamps = 1

smua.nvbuffer2.clear()
smua.nvbuffer2.fillmode = smua.FILL_ONCE
smua.nvbuffer2.appendmode = 1
smua.nvbuffer2.collecttimestamps = 1