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AD9361 Isolation measurement

Question asked by Andrew-007 on Aug 29, 2016
Latest reply on Aug 30, 2016 by Vinod

Hi Team,


We have Zed Board + FMCOMS3 (AD9361) board here, could you please explain how could we measure TX to RX port isolation ?

What I Tried:

TX LO:2200MHz

RX LO: 2200MHz

TX CW signal generated from TX2A port at 2202MHz (mean Voltage(2) and Voltage(3) in ADI oscilloscope) 

RX1A chain gain 0, RX1A port signal checked at Voltage(0) and Voltage(1) in ADI oscilloscope

This is TX2A to RX1A isolation, is this correct way of mearurement?


How can we measure TX1A to RX1A, becoz it will be on same frequency, and in ADI oscilloscope, both TX and RX signal are visible.