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rb:pdh-sdh [12/10/2018 22:14]
andrew [PDH node]
rb:pdh-sdh [12/10/2018 22:16] (current)
andrew [PDH node]
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 {{ :​rb:​34mbs-multiplexor.png?​200|}} {{ :​rb:​34mbs-multiplexor.png?​200|}}
  
-The tributary inputs to this are 16 x 2Mb/s,these are the gold (SMB) connectors on the lower part of the circuit boards, they seem to be multiplexed in groups of 4 to 8Mb/s and seem to come out of the top pair of gold connectors (DM8.1, i.e. 4x 2Mb/s) and then these 4 x 8Mb/s circuits multiplexed up to 34Mb/s (DM34). ​This is then converted to a single mode optical fibre to give greater range (DF34).+The tributary inputs to this are 16 x 2Mb/s,these are the gold (SMB) connectors on the lower part of the circuit boards, they seem to be multiplexed in groups of 4 to 8Mb/s and seem to come out of the top pair of gold connectors (DM8.1, i.e. 4x 2Mb/s) and then these 4 x 8Mb/s circuits multiplexed up to 34Mb/s (DM34), this is on the LHS card next to the blue optical fibreThe 34Mb/s copper output ​is then converted to a single mode optical fibre to give greater range (DF34) ​in the card on the extreme left.
  
 This seems an identical method to [[rb:​dmc-16x2mb|Digital Microwave 16x2Mb/s to 34MB/s multiplexer]] and is shown in the diagram to the right. This seems an identical method to [[rb:​dmc-16x2mb|Digital Microwave 16x2Mb/s to 34MB/s multiplexer]] and is shown in the diagram to the right.

rb/pdh-sdh.txt ยท Last modified: 12/10/2018 22:16 by andrew