This part of IEC 61580 is applicable to attenuation of waveguides and waveguides assemblies. The objective of the test procedures given below is to characterize the attenuation.
IEC 61580-4:1997 history
1997IEC 61580-4:1997/COR1:2006 Methods of measurement for waveguides – Part 4: Attenuation of waveguide and waveguide assemblies (Edition 1.0)
1997IEC 61580-4:1997 Methods of measurement for waveguides - Part 4: Attenuation of waveguide and waveguide assemblies