Hello.
We use DS125DF111 got return loss fail issue.
The current set output voltage is 600mV. De-emphasis setting 0~-12dB is all Fail. The output voltage should be set above 1000mV will be Pass.
But if the output voltage is over 700mV, the eye diagram will be Fail. Can you provide your suggestion to solve this problem. Thank you Help~
Dear Nasser.
Please kindly help us to try to open the attachment.. Thanks for kindly help~
Dear Nasser.
Please kindly reference on below. We use the Keysight E5071C ENA test equipment. Thanks for kindly help~
1). Are you saying you are failing return loss on port 12 and you are passing return loss on port 34?
A : Yes. Port 12 is output return loss / Port 34 is input return loss
2). Are you measuring input or output return loss?
A : Please reference Q1
3). Could you please send us your schematic for review?
A : Please reference on attached file.
