[USRP-users] Errors 0x8 and 0xf when capturing with b210.

Weaver, Tyler tweaver at lgsinnovations.com
Tue Apr 21 13:41:17 EDT 2015


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Sample rates:
I have tried various sample rates and the errors occur at > 8 MHz.  For my application I need something > 20 MHz.  Preferably I want to sample at 30.72 MHz.

Hardware:
dell: i7-4800MQ, 16gb ram, radion 8790M, SSD hd.
mac: i704980HQ, 16gb ram, nvidia gt 750M, SSD hd.


Clock rate:

I’ve tried 30.72 and 61.44 MHz.  Neither have gotten rid of the errors.


On Apr 21, 2015, at 10:50 AM, mleech at ripnet.com wrote:

What sample rate?

What are the specs on your Dell laptop, other than the 8-series USB controller.

What master clock rate are you using?

 
 
 
On 2015-04-21 12:42, Tyler Weaver via USRP-users wrote:

Hello,

When trying to capture form the b210 I'm getting the errors 0x8
(overflow) and 0xf (bad packet).  I'm running UHD 3.8.2 and have tried
my code (C++ interface) on a dell laptop with the Intel 8 Series C210
USB xHCI (rev 04) Controller.  I have tried setting stream_mode to both
STREAM_MODE_START_CONTINUOUS and STREAM_MODE_START_CONTINUOUS.  My
otw_format is "sc8".  I am also setting the peak value to these values
at different times (0.125, 0.0625, and 1.0).  What could I be doing to
cause these errors.  This code does not generate errors on the n210 I
have.  I've also tried this on a macbook pro (unknown usb controller)
with the same results.

Thank you,
tyler

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