ADRV9008-1 RF input pins DC bias voltage levels

The DC bias on the RF input pins should be about 0.7V. For an AC coupled and correctly matched drive is there a common reason for the DC bias to be 200mV or below instead? If the Rx is diabled does the DC bias or match change at all that could lead the Vbias to not be 0.7V approx.?

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