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Re: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune |
Date: |
Wed, 22 Aug 2007 14:09:04 -0700 |
User-agent: |
Mutt/1.5.9i |
On Wed, Aug 22, 2007 at 01:46:06PM -0700, Matt Ettus wrote:
> Bahn William L Civ USAFA/DFCS wrote:
> >
> >> That is because the onboard VCO typically won't tune below 2.3 GHz. You
> >> can change line 456 in gr-usrp/src/db_flexrf.py to allow you to try
> >> going lower.
> >>
> >> Matt
> >>
> >
> > Is there someplace where the (nominal) tunable ranges of each of the
> > daughterboards is available?
> >
> >
>
> In that same file
>
Given an instance of the daughterboard in question, you can ask it:
subdev.freq_range()
or
subdev.gain_range()
for the valid gain ranges
>From the abstract daughterboard base class db_base.py:
def freq_range(self):
"""
Return range of frequencies in Hz that can be tuned by this d'board.
@returns (min_freq, max_freq, step_size)
@rtype tuple
"""
raise NotImplementedError
def gain_range(self):
"""
Return range of gain that can be set by this d'board.
@returns (min_gain, max_gain, step_size)
Where gains are expressed in decibels (your mileage may vary)
"""
raise NotImplementedError
Eric
- [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune, DiX, 2007/08/22
- Re: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune, Matt Ettus, 2007/08/22
- RE: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune, Bahn William L Civ USAFA/DFCS, 2007/08/22
- Re: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune, Matt Ettus, 2007/08/22
- Re: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune,
Eric Blossom <=
- [Discuss-gnuradio] Synchronous bitstream output using ppio_ppdev?, Ed Criscuolo, 2007/08/22
- Re: [Discuss-gnuradio] Synchronous bitstream output using ppio_ppdev?, Eric Blossom, 2007/08/22
- Re: [Discuss-gnuradio] Synchronous bitstream output using ppio_ppdev?, Ed Criscuolo, 2007/08/23
- Re: [Discuss-gnuradio] Synchronous bitstream output using ppio_ppdev?, Johnathan Corgan, 2007/08/23