HD3SS215: Differential Impedance Measurement for HDMI2.0 Compliance Test

Dear Sir,

Our customer is testing differential impedance for HDMI2.0 certification.

Their architecture is input HDMI connector + HD3SS215 + TMDS181.

If they test TMDS181EVM only, the impedance is under 110ohm (pass).

But if they test HD3SS215EVM + TMDS181EVM, the impedance will be over 110ohm (fail).

Do you have any suggestion or experience about it??

Or is there any other switch can meet HDMI2.0 input impedance spec??

Thank you very much.