ND SatCom SKYWAN IDU 7000, Manual

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2010-10-26 Network Design and Engineering Guide 91
Outdoor Unit and Satellite Link Design
SkyWAN
®
Link Budget Calculation Tool
3.5.4 Tx Amplifier Worksheet
In the TxAmp sheet the available amplifier power classes for Ku- and C-Band can be defined.
Note that power classes have to be defined in ascending order.
Besides defining the power classes it is also possible to specify the maximum power class
available for SSPA amplifier types for Ku- and C-Band (input field markde in figure 3-18).
If the power requirement is higher than the available SSPA power class, the additional TWTA
back-off is added to the station’s power requirement. Add the TWTA back-off value in the Sum-
mary sheet in the marked field shown in figure 3-18.
The tool will propose after the link calculation a station amplifier type which has sufficient power
for all calculated links including the station’s output back-off.
Figure 3-17 Link Budget Tool - TxAmp Worksheet