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Update permanent_base.md
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docs/permanent_base.md

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@@ -89,7 +89,7 @@ I wrapped the SMA extension once around the base. In case anything pulls on the
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## Gather Raw GNSS Data
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Once you’ve got the antenna into a location where it *will not move or be moved* we need to establish its location. Open u-center and verify that you can get a lock and see 25+ satellites with your ZED-F9P. Assuming you’ve got good reception, we now need to set the receiver to output raw data from the satellites.
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Once you’ve got the antenna into a location where it *will not move or be moved* we need to establish its location. Power on your RTK unit and verify that you can get a lock and see 25+ satellites. Assuming you’ve got good reception, we now need to set the receiver to output raw data from the satellites.
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You will need a microSD card that is 1GB up to 32GB formatted for FAT16 or FAT32.
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After enabling the NMEA and RXM messages, exit from the serial menu by pressing x repeatedly. The system will save and apply the settings.
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#### Config via Serial
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### Deploy Unit
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Once the RTK product is configured, power it up with microSD inserted, and leave the unit in **Rover** mode. This will record all the data (NMEA, UBX, and RAWX) from the receiver to a *.ubx file. We do not yet know the location of the antenna so we stay in Rover mode to allow it to compile a large amount of satellite data. Only after we have confirmed its location should you enter **Base** mode.
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![The logging icon will remain animated while the log file is increasing](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_Facet_-_Main_Display_Icons.jpg)
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*The logging icon will remain animated while the log file is increasing*
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### Deploy Unit
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Once the RTK product is configured, power it up with microSD inserted, and leave the unit in **Rover** mode. This will record all the data (NMEA, UBX, and RAWX) from the receiver to a *.ubx file. We do not yet know the location of the antenna so we stay in Rover mode to allow it to compile a large amount of satellite data. Only after we have confirmed its location should you enter **Base** mode.
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#### Confirm Recording
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Before leaving the unit for 6 to 24 hours, it is recommended that you capture a few minutes of RAWX log data, with the antenna located with a clear view of the sky, and then inspect the log to confirm everything is working correctly.
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[Getting UBX file from SD card](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet SD RAWX Log Files.png)
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![Getting UBX file from SD card](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet SD RAWX Log Files.png)
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*Getting UBX file from SD card*
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Remove the microSD from the RTK unit and open it on a computer. The latest log file is shown above. Note the file shown above is 492kB because it logged only ~60s. Log files with RAWX and SFRBX and NMEA will grow in size to over 1GB across 24 hours.
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The quickest method to verify RAWX logging is to open the UBX file with a text editor.
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[Viewing a RAWX log in a text editor](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet Text Editor RAWX packets.png)
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![Viewing a RAWX log in a text editor](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet Text Editor RAWX packets.png)
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*NMEA and UBX binary data viewed in Visual Studio Code*
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Your editor may render the binary UBX RAWX data in unknown ways. If you see NMEA ASCII sentences combined with large chunks of binary data, the RTK product is correctly logging RAWX data.
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If you have u-center installed, you can more easily inspect for successful logging. Double click on a UBX files to open them in u-center.
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[Viewing a RAWX log in u-center](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet u-center view of Log Files.png)
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![Viewing a RAWX log in u-center](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet u-center view of Log Files.png)
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*Viewing a RAWX log in u-center*
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Press the play button (shown above) and you should see satellites quickly come in and out of view.
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[RAWX packet within the Packet Console](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet u-center RAWX packets.png)
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![RAWX packet within the Packet Console](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/SparkFun RTK Facet u-center RAWX packets.png)
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*RAWX packet within the Packet Console*
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