Appendix C: AIND Alignment
WinLink Performing WinLink AIND Alignment
11-144
6.
Repeat steps 1 to 4 until the reading on the SA is equal or as close as
possible to the calculated receive signal (for Rx Power Level, see Expected
Signal Level for AIND radios).
7.
When the SA reads the expected receive signal, the antennas are aligned
and there is an indication of a good link between the sites.
8.
Tighten the antenna azimuth axis and elevation axis.
9.
Stop the CW function. The NMS will restart the system.
10.
Connect WinLink-AIND unit to the external antenna. See WinLink™
Installation and Operation Manual for details. The operational link is shown
in Figure
2-1.
11.
Configure WinLink™ NMS at both sites to operate at the pure channel
frequency found in the RF survey. WinLink™ is now ready for operation.
Configuring the Link
1.
Run the Installation Wizard in the WinLink™ Manager Software to set the
configuration of the link. Configure the link in accordance with the
parameters calculated in the Link Budget Calculator.
2.
WinLink™ has a unique identification number, the SSID. Each side of the
link looks for its partner with the same SSID. Therefore both sides of the
link must be configured with the same SSID.
3.
The WinLink™ link is now ready for operation.
Evaluating the Link
With the link operating at a pure channel as determined by the
RF survey procedure, the recommended performance threshold of an
WinLink™ link is the following:
RSS: –84 dBm minimum
There are cases when there is no line of sight, but still the link is of an
acceptable quality.
If the link is not within the acceptable limit, see Troubleshooting.
Troubleshooting
If the link is not within the acceptable limit as defined in Evaluating the Link,
check the following:
•
Verify that both antennas have the same polarization (horizontal/vertical).
•
Check all the WinLink-AIND cable connectors for faulty connections.
•
Verify that there are no obstacles in the Fresnel zone of the antenna path
such as large buildings, trees, etc.
•
Use a spectrum analyzer with suitable sensitivity to measure the signal at
the distance between the sites.
•
If nothing improves the receive power level, check the overall link.
