Calculations Appendix BWinLink™ 1000 User Manual Release 1.9 B-2• Antenna gain and cable loss for ODU with integrated antenna• Available Channel BandwidthsCalculationsEIRPExpected RSS and Fade Marginwhere:Site A is the transmitting siteSite B is the receiving sitePathLoss is calculated according to the free space model,where Sensitivity is dependent on air-rate.Min and Max RangeMinRange is the shortest range for whichper air-rate.MaxRange (with Adaptive checked) is the largest range for which, at the highest air-rate for which this relation-ship is true. In a link with adaptive rate this will be the actual behavior.MaxRange (for a given air-rate) is the largest range for which.ServiceThe Ethernet and configured TDM trunks throughput is calculated accordingto internal product algorithms.AvailabilityThe Service Availability calculation is based on the Vigants Barnett methodwhich predicts the downtime probability based on a climate factor (C fac-tor).EIRP TxPower AntennaGain SiteA CableLoss SiteA–+=ExpectedRSS EIRP PathLoss AntennaGain SiteB CableLoss SiteB–+–=PathLoss 32.45 20 frequency MHz( ) 20 RequiredRange Km( )10log×+10log×+=ExpectedFadeM inarg ExpectedRSS Sensitivity–=ExpectedRSS MaxInputPower≤ExpectedRSS Sensitivity≥ExpectedRSS Sensitivity RequiredFadeM inarg+≥
