Reply To: Using 10 dB coupler for return loss measurement & 20 dB pad placement Forums › TG Series Discussions › Using 10 dB coupler for return loss measurement & 20 dB pad placement › Reply To: Using 10 dB coupler for return loss measurement & 20 dB pad placement Justin CrooksModerator Justin Crooks September 1, 2020 at 9:35 am Yes, but the scalar system for return loss only has the dynamic range of your coupler’s directivity, which is less than 40 dB. So it is not recommended to “store 20 dB pad” for return loss, only insertion loss.
