|From:||Marcus D. Leech|
|Subject:||Re: [Discuss-gnuradio] Bluetooth Transmitter using GRC|
|Date:||Wed, 14 Jan 2015 15:40:20 -0500|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0|
On 01/14/2015 02:29 PM, Mostafa Alizadeh wrote:
The X3xx series uses a 2.5PPM TCXO, just like the N2xx series. If that isn't accurate enough, you can always use an external, higher-accuacy
You use the same daughtercards in the X3xx as the N2xx, except that with the -120 cards (designed specifically for X3xx), they have a wider
analog baseband, to "match" the ADC sample rate. So, the LO switching times would be the same--on the order of a few milliseconds.
LO architectures for wideband frequency hopping need to be explicitly engineered for that particular application, and it looks like BlueTooth
hop-rates are sub-millisecond, so you can't hop the LO fast enough, but as Marcus Mueller points out, you can hop within a wide baseband.
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