... Optical Converter/Transmitter all-digitally&non-compressingly transmit 4-CH videos in 1-core fiber; CE, FCC, RoHS. Video Optical ... Range;4. No inter-modulate interference problem in other optical converters of non-simulate frequency modulation, phase modulation, ... , without on-site electrical and optical adjustment;10. Specially designed matching circuit of optical module, with low heat emission;11. ...