> For the complete documentation index, see [llms.txt](https://wiki.astrawireless.net/astra-wireless-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.astrawireless.net/astra-wireless-documentation/technical-documentation/astra-quasar-technical-user-manual/services/alignment.md).
# Alignment
The graphical antenna alignment tool allows to visualize the signal characteristics on both sides of the link in order to make the antenna alignment process more accurate and easier. It helps to find the best antenna position via comparing the actual received signal level with the calculated reference value. The accuracy of the antenna alignment at the neighbor device is very important for the link quality.
Antenna alignment tool operates online and does not break the wireless connection, but switch the devices to the alignment mode, which set MCS0, the maximum Tx power value and disable the ATPC mechanism.
Click the "Start alignment" button to begin.
Each side of the link (local and remote) has two similar test indicator sets, corresponding to each antenna polarization. This allows controlling the alignment process for each antenna polarization for the local and for the remote device simultaneously.
On the left edge of the graph there is a RSSI scale, below is a time scale (exact, if a connection to the SNTP server is performed or the time from the device being turned on). Red squares indicates break of the connection. Optimal RSSI values for operation at the highest modulations are -60...-40 dBm.
Click the "Stop alignment" button to finish a test. To download picture of current alignment state click the "Save as PNG" button.
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