delay compensation
delay compensation (fel2) is no repeatable: goin up in wavelnght sevaral steps and coming back to the evious values do not yel the former delays fro trls_04 and trls_08
delay compensation (fel2) is no repeatable: goin up in wavelnght sevaral steps and coming back to the evious values do not yel the former delays fro trls_04 and trls_08