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Abnormal IQ data of AD-FMCOMMS3-EBZ

Question asked by on Nov 3, 2015
Latest reply on Nov 4, 2015 by tlili

Dear Sir,


We found the failure 3 of 12 pcs and test condition is as below. Would you kind to clarify if any ignore to cause IQ amplitude unstable from AD-FMCOMMS3-EBZ ?

FDD mode , loop back test (Tx to Rx)

Carrier frequency : 1.5 GHz

Bandwidth : 56MHz

Data rate: 61.44Mbps


Normal : IQ amplitude is stable during time (Y-axis is amplitude and X-axis is sampling )

IQ normal.jpg

Abnormal: I seems normal but Q is unstable of amplitude

IQ abnormal.jpg

Thanks a lot.