Dario Greggio wrote:
> Olin Lathrop ha scritto:
>
>   
>> That's not really what it said, as that would be ambiguous.  The page you
>> linked to says "0+-1 dBm/600 Ohm".  Note the extra "m" after "dB".  That
>> defines 0dB as being 1mW into 600 ohms.
>>     
>
>
> Thank you very much Olin :)
> Actually, this part is clear enough to me, in the sense that I plan on 
> having an adjustable level control either in SW on the PIC or in an 
> OpAmp stage before the line itself.
>
> I mostly wanted to put down some points about the transformer, the line, 
> and the power stage (power supply)
>
>
>   
you don't need a transformer unless galvanic isolation is required. You 
can generate balanced 600 Ohm source just with amps and resistors. It's 
even possible on lines with 48V power (suitable capacitors).

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist