User manual

DTS Broadcast PDH Microwave Digital Radio User Manual
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7.7.6 IDU and Protection Switch Installation
The protected IDUs and protection switches require only 254mm rack depth and 1RU of vertical
rack space. No space above, below or between the units is required for ventilation purposes as the
whole system dissipates less than 25 W.
Step 1: Install each IDU in a rack with a 1RU space between them for 1+1 Protection System.
Follow the guidelines given in Section 4.6.1.
Step 2: Position the protection switch in between the IDUs.
Step 3: Install the cables.
Step 4: Connect cable from ODU nearest coupler flange to the upper IDU to ODU port of RF and
cable from ODU farthest from coupler flange to the lower IDU to ODU port of RF . This provides
the least amount of insertion loss to the primary side.
Step 5: Install customer’s data signal cables to the tributary connectors on the protection switch
using CC4 connectors and DB37-CC4 adaptors (for 75ohm E1s ), RJ-45 connectors(for
10/100BASE-T and 120ohm E1s).
Step 6: Install DC power to IDU via the 2-pin connectors.
Note: The protection switch has code download capability through the “A” protection connector.
This enables code to be downloaded to the controller without disturbing traffic on “B”.
And LCD panel is option by customer need.