What interfaces does a 1-channel video optical terminal provide, and what services can be transmitted simultaneously over one fiber?
The service interfaces of a 1-channel video optical terminal are stacked by model: the video channel uses a BNC interface with input/output impedance of 75Ω (unbalanced); the data channel uses an RJ-4
The service interfaces of a 1-channel video optical terminal are stacked by model: the video channel uses a BNC interface with input/output impedance of 75Ω (unbalanced); the data channel uses an RJ-45 interface supporting RS-232, RS422 (4-wire), and RS485 (2-wire); the audio channel uses an RJ45 interface with input impedance ADC:100KΩ and output impedance DAC:10KΩ, connected according to port labels. The optical link side features an FC optical port (SC and others customizable), with single-mode as standard and multi-mode optional; the two ends are paired by wavelength: transmitter 1550nm/1310nm, receiver 1310nm/1550nm. One fiber can simultaneously carry 1 channel of unidirectional video, 1 channel of data, and 1 channel of bidirectional audio.