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Re: [Discuss-gnuradio] digital noise input
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] digital noise input |
Date: |
Sat, 18 Nov 2006 10:41:58 -0800 |
User-agent: |
Mutt/1.5.9i |
On Fri, Nov 17, 2006 at 07:13:05PM -0800, Oussama Sekkat wrote:
> Hi,
>
> I am still trying to measure the digital output noise (from the LFRX_A
> daughterboard).
Another random thought:
Since you are using the LFRX and it's DC coupled you must turn off
the ADC DC offset removal control loop in the FPGA.
/*!
* \brief Enable/disable automatic DC offset removal control loop in FPGA
*
* \param bits which control loops to enable
* \param mask which \p bits to pay attention to
*
* If the corresponding bit is set, enable the automatic DC
* offset correction control loop.
*
* <pre>
* The 4 low bits are significant:
*
* ADC0 = (1 << 0)
* ADC1 = (1 << 1)
* ADC2 = (1 << 2)
* ADC3 = (1 << 3)
* </pre>
*
* By default the control loop is enabled on all ADC's.
*/
bool set_dc_offset_cl_enable(int bits, int mask);
In python:
u.set_dc_offset_cl_enable(0x0, 0x3)
Eric
- Re: [Discuss-gnuradio] digital noise input, (continued)
- Re: [Discuss-gnuradio] digital noise input, Oussama Sekkat, 2006/11/10
- Re: [Discuss-gnuradio] digital noise input, Eric Blossom, 2006/11/11
- Re: [Discuss-gnuradio] digital noise input, Oussama Sekkat, 2006/11/17
- Re: [Discuss-gnuradio] digital noise input, Eric Blossom, 2006/11/17
- Re: [Discuss-gnuradio] digital noise input, Oussama Sekkat, 2006/11/17
- Re: [Discuss-gnuradio] digital noise input, Brian Padalino, 2006/11/17
- Re: [Discuss-gnuradio] digital noise input, Oussama Sekkat, 2006/11/18
- Re: [Discuss-gnuradio] digital noise input, Oussama Sekkat, 2006/11/18
- Re: [Discuss-gnuradio] digital noise input, Eric Blossom, 2006/11/18
- Re: [Discuss-gnuradio] digital noise input, Don Ward, 2006/11/18
- Re: [Discuss-gnuradio] digital noise input,
Eric Blossom <=