... Optical Transmitter 1,High Quality with CE,RoHs,FCC Certificate 2,HighQuality 3.Prompt Delivery 4.RS232, RS422,RS485 Fiber Optical ... pattern 5.with the APC electric circuit, the output optical power to be constant, the dynamirange is wide6 ... from Non-simulation frequency modulation, phase modulation, amplitude modulation PDH Mutiplexer8.Uses the technical grade modulation design, and easy to ...