... CATV HFC networks, and primarily used for TV video signal, digital TV signal, telephone voice signal and data ... The product use import high performance DFB laser transmitter as light source, RF drive adopts RF power ... Under the condition of prescriptive link loss, laser transmitter modulation depth of each channel being 3.6%, ... set 59 PAL-D simulative TV channels signal at 47~550MHz and 33 QAM64 ...