QAM 256 CATV Signal Level Meter Channel spectrum scanning spectrum analysis Limit ... Annex (A) 16, 32, 64, 128 and 256 QAM Annex (B)64 and 256 Symbol Rate 1 to 7Mbps Analog CATV AM ... A(16,32,64,128and256)and Annex B (64 and 256) QAM modes Leakage measurement in the spectrum mode or frequency ... A(16,32,64,128and256)and Annex B (64 and 256) QAM modesRY-S1129D Annex A(16,32,64,128and256)and ...