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Re: [Discuss-gnuradio] Residual Frequency?
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Residual Frequency? |
Date: |
Sat, 19 Apr 2008 14:18:13 -0700 |
User-agent: |
Mutt/1.5.17 (2007-11-01) |
On Fri, Apr 18, 2008 at 03:38:37PM -0400, Wireless Monster wrote:
> Hi All,
>
> I am trying to send a GSM modulated signal using the USRP and the RFX900
> board using the 'tune' function as in the provided usrp examples:
>
> r = self.u.tune(self.subdev._which, self.subdev, target_freq)
>
> The desired frequency is 925.6MHz, and I am getting a -381.47m
> residual_frequency as shown below.
Note that that's 381.47 milli Hz == 0.381 Hz. There's nothing you
have to do about it.
> What will be the best way to correct that, so I get the signal modulated to
> the desired frequency?
>
> Thanks in advance to all for your help!
>
> ---8<----
>
> Using TX d'board A: Flex 900 Tx MIMO B
> r.baseband_freq = 930M
> r.dxc_freq = -4.4M
> r.residual_freq = -381.47m
> r.inverted = False
Eric
Re: [Discuss-gnuradio] Residual Frequency?,
Eric Blossom <=