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Re: [Discuss-gnuradio] N210 8-bit mode and WBX bandwidth

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] N210 8-bit mode and WBX bandwidth
Date: Mon, 06 Dec 2010 10:40:09 -0800
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On 12/03/2010 05:22 PM, Blair Strang wrote:
Hi all,

Two related questions:

1) In the datasheet for the N210, the specifications state 50Mhz
instantaneous bandwidth in 8-bit mode.  I was looking at
otw_type.width in the UHD and I can't see an 8 bit mode there.  Is
8-bit mode implemented in the fpga/firmware/driver for N210?  If not,
roughly how far ahead in the roadmap would it be?   I apologise if
this is a FAQ.

We would like to do this in the first quarter next year, but I can't promise anything. We would be more than happy to accept patches.

2) The WBX has a fixed filter; I can see in the UHD an indication it's
fixed at 40Mhz.  Would it be hard to modify the daughterboard to
provide 50Mhz of bandwidth?

This is not hard at all. You would need to replace 8 inductors and 12 capacitors. I suggest using QUCS to design and simulate your filter.


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