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Re: [Discuss-gnuradio] GNU Radio Companion USRP Transmitter Example

From: isaacgerg
Subject: Re: [Discuss-gnuradio] GNU Radio Companion USRP Transmitter Example
Date: Wed, 25 Jun 2008 10:45:32 -0700 (PDT)

No luck.  Can you send me an example xml schema for a transmitter that you
know works?

Thanks in advanced,

Josh Blum wrote:
> isaacgerg wrote:
>> Does anyone have an .xml file that shows an example of doing this? 
>> Currently, I have a USRP sink with the following parameters and I cant 
>> get
>> any signals on my Rx USRP.  I know my Rx USRP is working as I can run the
>> gnuradio ptt example and I can see energy appearing on the PSD.
>> Here are my USRP Sink parameters:
>> Input type: complex
>> usint #: 0
>> subdev spec: side B
>> freq: 25000000
>> gain 3200
>> mux 0x0
>> auto t/r : ignore
>> tx enable: enable
>> interp: 400
>> The input to the sink is a cosine wave at 10000 with amplitude 100.
>> Thanks in advance.
> Im not sure about the board you are using, but the actual allowed gain 
> parameter is way less than 3200. Set the usrp gain to 0, and try a 
> amplitude of 5000 for the signal source.
> -Josh
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