PCB Designers
Member level 3
- Joined
- Dec 17, 2009
- Messages
- 65
- Helped
- 6
- Reputation
- 12
- Reaction score
- 8
- Trophy points
- 1,288
- Location
- Karachi, Pakistan
- Activity points
- 1,700
Hi ,
I have a PCB with 8 differential pairs. All are matched length.
All pairs are connected to a FPGA through bus isolators and on the other end of each trace, an SMA has been placed to check the results. No terminations has been used.
When I apply same clock to all pairs, ranging from 1Mhz to 150Mhz, I got waveforms of different timing at the other end of differential pairs.
Attached are some pictures for more clarification.
Looking forward for the response.
Regards,
Maqbool
These are the pictures attached:
I have a PCB with 8 differential pairs. All are matched length.
All pairs are connected to a FPGA through bus isolators and on the other end of each trace, an SMA has been placed to check the results. No terminations has been used.
When I apply same clock to all pairs, ranging from 1Mhz to 150Mhz, I got waveforms of different timing at the other end of differential pairs.
Attached are some pictures for more clarification.
Looking forward for the response.
Regards,
Maqbool
These are the pictures attached:
Attachments
Last edited: