Dario Greggio wrote: > ... I just have some doubts on what it really means the usual "0dB / > 600ohm" 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. You can work backwards from there to find the voltage or other parameters. Sqrt(1mW * 600ohm) = 775mV. 1dB is a ratio of 10**.1 = 1.259 in power or sqrt(1.259) = 1.122 in voltage. Their spec therefore is saying the voltage is from 775mV / 1.122 = 690mV to 775mV * 1.122 = 869mV into a nominal 600 ohm load. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist