User's Manual Part 2

Appendix C Link Budget Calculator Installation and Operation Manual
Figure C-5. Fresnel Zone
C.3 Using the Link Budget Calculator
The Link Budget Calculator comprises of one table where all the link
parameters are defined.
Æ
To calculate the link budget
1. Select your system product from the dropdown list of products.
2. Select the rate from the dropdown list. The rate defines the air-
interface rate in Mbps. The system operates in TDD mode and has
overhead of the air-interface protocol and therefore the accurate
actual throughput is provided in the ‘Service’ Row and the effective
Ethernet throughput is provided in the ‘Ethernet Rate’.
Note
•
Throughput can be decreased as a function of range due to
propagation delay.
The remaining fields are completed automatically depending on the
product selected in the product field. Standard WinLink 1000
system parameters are entered as default. Fields in blue boxes may
be edited if non-standard antennas and cables are used.
The Fade margin is the minimum margin that is required for LOS
conditions. For degraded link conditions, a larger fade margin
should be taken into account.
The Tx power EIRP for the system is given in dBm and Watts.
C-6 Using the Link Budget Calculator WinLink 1000