Tool/software:
hi team,
Can you provide the measured waveform of the 100Base-T1 of this evaluation board? The waveform I measured myself was poor!
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Tool/software:
hi team,
Can you provide the measured waveform of the 100Base-T1 of this evaluation board? The waveform I measured myself was poor!
Hi,
I would suggest probing the 100Base-T1 signal using a differential probe across the TRD_M and TRD_P pins.
The signal should look like the yellow signal below at link up.
Best regards,
Melissa
Hi,
Why do you want to see the signal details? What is this for? Are you seeing an issue with the TI DP83TC812EVM?
Best regards,
Melissa
Hi,
Please confirm you are using a differential probe and measuring it across the connector output of the TRD_P and TRD_M pins.
If you do not have a differential probe, you may use a single ended probe to measure TRD_P to GND in channel 1 and TRD_M to GND in channel 1 and perform a MATH function on the scope and do Channel1-Channel2.
Best regards,
Melissa
Hi,
The expected waveform is shown above. Can you provide a photo of your waveform? Are you trying to measure the waveform for compliance? What is your application?
If there is a specific issue with your EVM, I’d be happy to help.
Best regards,
Melissa
hi
1.The expected waveform is shown above------ I can‘t see ’the TRD_P A&TRD_N details,
2.Can you provide a photo of your waveform?---------A: I has put my waveform below my qustion at the begginning.
3.Are you trying to measure the waveform for compliance? What is your application?---- I am testing the EVM board‘s’ TRD_PP&TRD_N signal Quality , I plan to use the PHY chip for our new design, I should make sure this PHY chip is no problem; I don't thik there is any issue in the EVM ,I just want to see the RD_PP&TRD_N signal details as a contrast.
Hi,
Im a little confused on what specific derails you require. The amplitude? The scale is shown in the photo if needed.
Are you measuring the signal at linkup? Can you provide a photo of your probe?
Best regards,
Melissa