User manual

DTS Broadcast PDH Microwave Digital Radio User Manual
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16 trabutary datas are fed to the 4/8/16E1 service card in IDU. The DSP in service card converts
the tributary datas to TTL level signals and multiplexes them onto four E2 data streams. The 4 E2 data
streams are fed to mother board of IDU througth a connector.
Samely, the 4 E2 data streams received from remote by IDU mother board are de-multiplexed into
16 tributary datas by the DSP in service card. And also, the sevice card monitors alarms of tribs, and
controls tributary loopback. The interface of tributary has two types, such as 120ohm balanced and
75ohm unbalanced.
Figure 2-19 Block diagram of the 4/8/16E1 service card
The 10/100BASE-T+1/2/4E1 Service pulg-in card in IDU has functions detailed in Figure 2-20.
4 tributary datas and 1 10/100base-t data are fed to this service card in IDU. The DSP in service
card converts the tributary datas and 10/100base-t data to TTL level signals, and multiplexes them onto
four E2 data streams.
The 4 E2 data streams are fed to mother board of IDU througth a connector. Samely, the 4 E2 data
streams received from remote by IDU mother board are de-multiplexed into 4 tributary datas and 1
10/100base-t data by the DSP in service card. And also, the sevice card monitors alarms of tribs, and
controls tributary loopback. The interface of tributary has two types, such as 120ohm balanced and
75ohm unbalanced.