... Optical Transmitter 1,High Quality with CE,RoHs,FCC Certificate 2,HighQuality 3.Prompt Delivery 4.RS232, RS422,RS485 Fiber Optical ... movement, stationary picture, non-distorted transmission2.Wall-hung type or 19 inch/4U insert card type3.Automatic ... from Non-simulation frequency modulation, phase modulation, amplitude modulation PDH Mutiplexer8.Uses the technical grade modulation design, and easy to ...