On 08/22/2011 07:10 AM, waqasme wrote:
> 
> Hello everyone,
> I am trying to implement DQPSK implementation in GRC and trying to transfer
> image  but i am getting this error message . Also some of my connection are
> grey. Can anyone please tell me what does grey connection means? and how to
> fix that?


grey means disabled. You can enable/disable blocks with e and d hotkeys.

> i tried to remove the connection and also put new connection still some are
> the connections shows grey color insetad of black. here is the error message
> i am getting 
> 

Looks like bad input. Cant take log of 0.0

-josh

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