HI JOE50,FIRST OF ALL THANKS TO YOUR ATTENTION
WHILE YOU MUST TURN OFF THE CARRIER MEASURING CTB WHITCH IN HRC FALLS UNDER THE CARRIER AND BECOUSE OF MODULATORS PHASE NOISE THE COMPOSITE BEATS OQUPIES A 10-25 KHZ BAND WIDTH,IT IS NOT THE SAME THING WITH CSO!
1ST YOU CAN REMOVE OR NOT -THE CARRIER IN CSO BUT YOU MUST REMOVE MODULATION.
2ND -THE BEATS FALL AROUND THE CARRIER +/-750 KHZ &AND +/-1.25
MHZ AND BECOUSE WHEN THE CARRIER IS UNMODULATED AND RESULOTION BAND WIDTH IS 30KHZ ,AND IN -60 DB BELLOW CARRIER THE SAPERATION BETTWEN BEATS AND CARRIER IS MORE THAN 30 KHZ*15 (WHITCH IS THE RESULOTION BANDWIDTH FILTER RESPONSE )WITH THE SPECTRUM YOU CAN SEE THE BEATS(4 OF THEM !) .
CTB CSO MEASURMENTS
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