Nevion AV-3G-XMUX - Manual (Page 30)

Configuration 30
AV-3G-XMUX User Manual Rev. B
Figure 6.9 Config page middle
6.4.9 RS422 Data port configuration
The RS422 data backplane input must be configured with GYDA. The baud rate, data length, parity
and stop bits must be configured if UART mode is used. The router destination where the data is
to be embedded must be set up and the source channel containing the received data that will be
output on the backplane must be also be configured. See the next section
6.4.9.1 Data transmission
The module can de-embed and embed asynchronous data. An AES3 audio signal, user bit channel
is used as a carrier. Both embedded audio and normal AES3 signals may be used to carry the RS422
data. The fiber connection usually only goes one direction so any desired return path must be
created by the user with another circuit. Return data may be sent over fiber via a link comprising
of XMUX embedders, D422 or D422-MG modules. The return signal may also be carried on a
normal copper AES signal. The data input works in one of two modes:
1. UART Mode: The data is checked for correct reception according to the configuration.
The data words are packaged and sent when present.