Rigol-VB1020-VSWR-Standing-Wave-Measuring-Bridge-for-DSA815-DSA815-TG-Rigol-VB1020-P-The-Rigol-VB1020-VSWR-is-a-Standing-Wave-Measuring-Bridge-for-DSA815-DSA815-TG-The-VB1020-is-used-together-with-Rigol-DSA-series-spectrum-analysers-with-tracking-generators-to-make-S11-measurements-return-loss-reflection-coefficient-VSWR-P-P-The-VSWR-Bridge-connects-directly-onto-the-front-of-Rigol-DSA-series-spectrum-analysers-with-tracking-generators-to-improve-the-test-accuracy-&-to-avoid-the-n