Calculations; Eirp; Expected Rss And Fade Margin; Min And Max Range - Radwin WinLink 1000 User Manual

Calculations

Calculations

EIRP

EIRP = TxPower +

Expected RSS and Fade Margin

ExpectedRSS = EIRP PathLoss
where:
Site A is the transmitting site
Site B is the receiving site
PathLoss is calculated according to the free space model,
PathLoss = 32.45 +
ExpectedFadeM arg
where Sensitivity is dependent on air-rate.

Min and Max Range

MinRange is the shortest range for which
MaxRange (with Adaptive checked) is the largest range for which

ExpectedRSS Sensitivity
link with adaptive rate this will be the actual behavior.
MaxRange (for a given air-rate) is the largest range for which

ExpectedRSS Sensitivity

Service

The Ethernet and configured TDM trunks throughput is calculated according to internal prod-
uct algorithms.

Availability

The Service Availability calculation is based on the Vigants Barnett method which predicts the
downtime probability based on a climate factor (C factor).
Availability
7 –
 
= 1 6 – 10 Cfactor
– ExpectedFadeM
------------------------------------------------------------ -
10

10
WinLink 1000 User Manual
AntennaGain
SiteA
– + AntennaGain
 
20 log frequency
10
in = ExpectedRSS Sensitivity
, at the highest air-rate for which this relationship is true. In a
+ RequiredFadeM

frequency
arg in
Release 1.9.40
– CableLoss
SiteA
– CableLoss
SiteB
 
+ 20 log
MHz
10
–

ExpectedRSS MaxInputPower
.
arg in
 
RequiredRange
GHz
Chapter 21
SiteB

RequiredRange
Km
per air-rate.
3

KM

21-2