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From: | Mattia Rizzi |
Subject: | Re: [Discuss-gnuradio] Internal delays (due to clock path, ...) & jitter, between tx e rx path in USRP 1 device |
Date: | Fri, 29 Jul 2011 16:35:01 +0200 |
>Normally, the TX path and RX would only be connected through the host
computer software--either "roll your own+UHD" or with,
Gnu Radio. Perphas i’m not well explained. I’m talking about samples that are inside
internal buffers of USRP. At time=t0 one sample is acquired and two sample are
sent over RF front-end. What i want to know is the temporal disaligment (due to
clock path delays, etc) between these two tasks.
Thank you for your response.
From: Marcus D. Leech
Sent: Friday, July 29, 2011 3:57 PM
To: address@hidden
Subject: Re: [Discuss-gnuradio] Internal delays (due to clock path,
...) & jitter, between tx e rx path in USRP 1 device On
29/07/2011 8:42 AM, Mattia Rizzi wrote:
Normally, the TX path and RX would only be connected through the host computer software--either "roll your own+UHD" or with, Gnu Radio. So making any kind of statements about latency and jitter would be pretty difficult. The TX and RX sampling and RF PLL clocks are all slaved to the 64MHz master clock on the USRP1, if that's helpful information. But RX-to-TX jitter and latency information is something that is highly, highly, highly, dependent on the host side of things.
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