DCA1000EVM: Packet Loss

Samuel Miller99

Part Number: DCA1000EVM
Other Parts Discussed in Thread: AWR1642

What would be the main cause of packet loss when transferring ADC data from the DCA1000 to my computer via ethernet? For some tests, I am seeing about ~40% of packet loss and I am unsure how to counteract this issue. Is it possible that certain configurations of the AWR1642 lead to higher packet loss than others? Could it be an issue with the storage device on my computer (I can't write to storage as fast as I receive data)?

over 6 years ago

0 Chloe Shay71 over 6 years ago

TI__Expert 4025 points

Hi Samuel,

Please reduce the duty cycle to decrease packet loss.

Best,

Chloe

0 Samuel Miller99 over 6 years ago in reply to Chloe Shay71

Expert 1005 points

Are you referring to the duty cycle of the AWR1642? If so, are you referring to the chirp duty cycle (chirp active time relative to chirp period) or frame duty cycle (frame active time relative to frame period)?

0 Chloe Shay71 over 6 years ago in reply to Samuel Miller99

TI__Expert 4025 points

Hi Samuel,

Please try increasing the packet delay as shown in this picture.

Best,

Chloe

0 Samuel Miller99 over 6 years ago in reply to Chloe Shay71

Expert 1005 points

Thank you for the response Chloe. Are you familiar with what actually happens when I increase the packet delay according to the picture? Is mmWave Studio rewriting the DCA1000's configuration via UART?

0 Chloe Shay71 over 6 years ago in reply to Samuel Miller99

TI__Expert 4025 points

When increasing Ethernet packet delay, streaming throughput is decreased due to slower data capturing.

-Chloe

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DCA1000EVM: Packet Loss