Transceiver output characteristic - Transceiver output characteristic Hi- 1. Question In Transceiver Native PHY Intel Arria 10/Cyclone 10 FPGA IP, In 2GHz, Well done But 5Ghz, 101010 Voltage Swing Very low voltage below fig show 10101010 ans 11001100, 11101110 2. Question In assignment editor, I have "Transmitter voltage swhing" amend to a different value values 30 is OK! 16, 13 is OK! But 1-8 is not okay. This value is compile error(Quartus Pro 18.1) I was not tested all values (1~31) Replies: Re: Transceiver output characteristic Hi K**bleep**ij Thank you! Your advice has been very helpful in understanding "Transceiver IP." Sincerely! Replies: Re: Transceiver output characteristic Hi Lee, It looks like, you are having insertion loss on your channel. Insertion loss generally increases with frequency. To overcome high insertion loss use pre-emphasis. During characterization 1-8 is probably not going to open the eye that's why we have disabled it. In general to get the better results, reduce the voltage swing & increase the pre-emphasis. Majorly 2 things effects on the insertion loss. PCB material Width of traces Also, please go through the guidelines. https://www.intel.com/content/www/us/en/support/programmable/support-resources/signal-power-integrity/signal-integrity-support.html Thank you Kshitij Goel