# Downloading Reference Station Data

## Stonex S900

#### Configuring the S900

Stonex S900 receivers purchased from Phoenix LiDAR Systems will come pre-configured to record raw GNSS observations, suitable for PPK trajectory processing workflows. If your S900 is for some reason not configured to record raw observations, follow the document below:

{% file src="/files/1nj3rNYA88yF84p41Y35" %}

#### Downloading S900 data

To download data from the Stonex S900, power on the Stonex S900 and connect the USB cable located on the end of the LEMO power/data cable to your computer. Do not use the Serial to USB adapter. The Stonex S900 will act as an external hard drive and should pop up in Windows. Locate the folder containing your desired data. Folders are named with the following naming scheme: YEARMONTHDAY. Access the folder and copy the corresponding file containing the raw observations in .dat format. 

{% hint style="info" %}
You will need to convert the DAT file to RINEX in order to post process your static data
{% endhint %}

## CHC X900+

To download data from the CHC X900+, power on the CHC X900+ and connect the USB cable located on the end of the LEMO power/data cable to your computer. Do not use the Serial to USB adapter. The CHC X900+ will act as an external hard drive and should pop up in Windows. Locate the folder containing your desired data. Folders are named with the following naming scheme: YEARMONTHDAY. Access the folder and copy the corresponding file containing the raw observations in .HCN format. You will need to convert the HCN file to RINEX.

## Convert Raw to Rinex

### Stonex S900

For Stonex reference stations, it is recommended to download [Novatel Convert](https://novatel.com/support/support-materials/software-downloads) and use it to convert raw static DAT files to Rinex, if you need to refine the reference station coordinates using a free GNSS post-processing service like OPUS or Trimble RTX. 

* Drag and drop DAT file into Novatel Convert
* Select RINEX 3.04 output format
* Set sample period to 1 hz

![Novatel Convert - open file, configure sample period, configure output format](/files/-Miguoh89UM7g-aRUoPM)

* Configure output file path

![Output File Path](/files/-MigvTIIuJcnW-I8apdQ)

* Click "Convert" to convert Raw to Rinex

![Convert Raw to RINEX](/files/-MigviXzoZFEAqoNPsSx)

### CHC X900+

For CHC reference stations, you can alternatively use CHC RINEX Converter ([download here](https://www.phoenixlidar.com/downloads/) under CHC Software Downloads) to convert “.HCN” files to RINEX files. Simply drag and drop an “.HCN” file into the RINEX Converter and press the green play button. This will generate a “RINEX” folder in the same location as the “.HCN” file, and populate the folder with the various types of RINEX files (observation, navigation, etc.)

![CHC RINEX Converter](https://lh4.googleusercontent.com/Z-rQdJLxMu9KnE0MEmR0WYXACcOklV3PnDueOuxZFyEtEHc2HIqnQt0LLPRpDoSkrAkWd4r8iRjYsi7JPJtJDCHt4IImIXXrN3mmGdJKjCtr1pwZXJSVCY4sypCm-f6UYCMWksRe=s0)


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