How to set up a transceiver in Arria V GX development kit?

Thank you, I found the schematics file. It is called A5GX_STARTER_C.pdf

The pin_number association for SMA receivers are H34 and H33, positive and negative respectively.

So board reference J2, J3, J4 and J5 are associated to pin numbers H34, H33, G32 and G31 respectively.

But now I cannot understand why it's sending a clock signal the rx_clkout from my custom transceiver if I don't connect any input signal to the RX channel.

does custom transceiver send a fake clock signal by rx_clkout pin even if it has not any input signal by rx_serial_data pin?