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DS92LV3222: Ser/Des Problem

Part Number: DS92LV3222
Other Parts Discussed in Thread: LV24EVK01

Hello professional,
I have recently asked about which ser/des unit to choose in my application about driving led panels(https://e2e.ti.com/support/interface/f/138/t/896020). I've used ds92lv3221/ds92lv3222 pair as you suggested. I have acquired LV24EVK01 Evaluation Kit as well. But there is a problem about the system. And I could not figure what it is. I measured the differential signals which is approximately 1V(from the ser differential output pin without entering the cap). I also ensured all the pins are well connected and have the voltages as and connected as the schematics. I am using rj45 connector with 2 meter cat5 cable.