Sampling rate vs. max USB rate
Sampling rate vs. max USB rate
I have a question regarding the sampling rate.
The SDRplay is specified with max 10 MS/s. With 14 bit for each sample and twice of that for I and Q.
This is a data rate of 10 * 14 * 2 = 280 Mbit/s
But the USB 2.0 interface can only transfer 40 Mbit/s maximum.
That looks strange, what is the mistake in my calculation ?
Thanks, Harry
The SDRplay is specified with max 10 MS/s. With 14 bit for each sample and twice of that for I and Q.
This is a data rate of 10 * 14 * 2 = 280 Mbit/s
But the USB 2.0 interface can only transfer 40 Mbit/s maximum.
That looks strange, what is the mistake in my calculation ?
Thanks, Harry
Last edited by harry4516 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Re: Sampling rate vs. max USB rate
I'm no expert in matters digital, but I think at 10 Ms/s, the samples are reduced to 8 bit. I could be wrong (I often am...).
Last edited by g1hbe on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Andy
Re: Sampling rate vs. max USB rate
40 megabytes, not megabits.
Last edited by OH2BUA on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason