Eos Arrow GNSS Article - How to Configure Eos Tools Pro for RTK on Android
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How to Configure Eos Tools Pro for RTK on Android

To acquire RTK corrections with your Arrow Series® GNSS receiver, you need an app capable of receiving and transmitting RTK corrections. RTK corrections are received via the Internet, and they are transmitted to the Arrow via Bluetooth®.

Eos Tools Pro includes both a Networked Transport of RTK via Internet Protocol (NTRIP) and Direct Internet Protocol (DIP) client that allows you to connect directly to an RTK network or base station by entering your credentials (i.e., IP address, IP port number, username, and password).

In this tutorial, we will show you how to connect your Arrow GNSS receiver to Eos Tools Pro on Android and then configure the Differential menu to connect to your RTK network or base station

Initial Location Settings

1. Make sure Eos Tools Pro is already installed on your Android device. If you need to download the app, please visit the Google Play Store or use the following link:

https://play.google.com/store/apps/details?id=com.eos_gnss.eostoolspro

Eos Tools Pro App Download in Android Store

2. Make sure that the Developer Options on your Android device are activated, and that Eos Tools Pro is set up as the mock location app.

Samsung Screenshot of Developer Options for How to Configure Eos Tools Pro in RTK Mode on Android

3. Activate the Replace Device Location switch in the Eos Tools Pro settings. This will allow your data collection app (e.g., ArcGIS Field Maps, ArcGIS Survey123, tMap) to acquire the location from your Arrow receiver.

For a more detailed step-by-step guide on how to perform these preliminary settings, please visit the following link:

https://eos-gnss.com/knowledge-base/articles/mock-location-android-eos-tool-pro

Entering Your RTK Credentials on Eos Tools Pro

There are three different ways to connect to an RTK network/base station using the following options in Eos Tools Pro:

  1. NTRIP (Networked Transport of RTCM via Internet Protocol)
  2. DIP (Direct IP protocol)
  3. Radio/UHF*

*Note: For radio communication configuration, please contact our tech support.

Connecting to Your RTK Network/Base Station Using the NTRIP Protocol

1. Connect your Arrow receiver to Eos Tools Pro.

2. Confirm that you have a valid position (at least GPS Diff Status) displayed in the Position menu:

Samsung Screenshot of Position Tab DGPS for How to Configure Eos Tools Pro in RTK Mode on Android

3. Tap on the Differential tab and select the NTRIP tab.

Enter your IP, Port, username, and password. It will look like this:

Samsung Screenshot of Differential Tab How to Configure Eos Tools Pro in RTK Mode on Android

4. Tap on Get Mountpoint and select the mountpoint to use.

Click on Start to establish the connection between Eos Tools Pro and your RTK network/base.

Samsung Screenshot of Differential Tab for How to Configure Eos Tools Pro in RTK Mode on Android
Samsung Screenshot of Differential Tab for How to Configure Eos Tools Pro in RTK Mode on Android

A timer will start, and the Tx LED on the top of the app will start blinking green every time RTK corrections are received.

Connecting to Your RTK Base Station Using the DIP Protocol

1. Connect your Arrow receiver to Eos Tools Pro.

2. Confirm that you have a valid position (at least GPS Diff Status) displayed in the Position menu:

Samsung Screenshot of Position Tab DGPS for How to Configure Eos Tools Pro in RTK Mode on Android

3. Tap on the Differential tab and select the DIP tab.

Enter your IP and Port. It will look like this:

Samsung Screenshot of DIP Main Menu for How to Configure Eos Tools Pro in RTK Mode on Android
Samsung Screenshot of DIP Connected for How to Configure Eos Tools Pro in RTK Mode on Android

A timer will start, and the Tx LED on the top of the app will start blinking green every time RTK corrections are received.

Connecting to Your RTK Base Station Using a Bluetooth® Radio

1. Pair your Bluetooth® radio to your Android device using the Android Bluetooth® connection settings. In this example, we will use the Satel Compact-4BT radio.

Screenshot of Bluetooth Connection for Eos Arrow on Samsung Tablet

The radio will then appear under the Paired Devices list.

2. Open Eos Tools Pro and connect to your Arrow receiver.

3. Make sure you have a valid GPS position displayed in the Position menu.

4. Tap on the Differential tab and from the Radio menu, select the previously paired radio from the Paired Devices List.

Samsung Screenshot of Tablet Radio Selection for How to Configure Eos Tools Pro in RTK Mode on Android

Eos Tools Pro will connect to your Bluetooth® radio to receive RTK corrections and send these to your Arrow to then compute an RTK fixed position.

Note: Make sure you have previously configured both radios (rover and base) with the radios’ software or by using their front interface before connecting with Eos Tools Pro.

For more information concerning the radio setup, we suggest you contact your radio provider for technical support.

Saving Your RTK Credentials

If desired, you can also save your RTK network/base station information and connection credentials within Eos Tools Pro.

This would save you time if you are planning to switch from one RTK network to another.

Here’s how to proceed …

Saving RTK Credentials for NTRIP and DIP Protocols

After entering your relevant credentials (e.g., IP, port, username, and password) in the previous steps and selecting your mountpoint (NTRIP only), you can tap on the Save button to store any NTRIP or DIP connection information in a profile. Simply give a name to your connection to access it later. See the example pictured below.

Once you save them, you will be able to choose these RTK base credentials in the future by tapping on “Differential Profiles” at the top of the menu and selecting your saved credentials.

Samsung Screenshot of NTRIP Profile Creation for How to Configure Eos Tools Pro in RTK Mode on Android
Samsung Screenshot of DIP Save Profile for How to Configure Eos Tools Pro in RTK Mode on Android

Saving RTK Credentials via Radio

Select your radio from the Bluetooth® Paired Devices and then click on Save.

Samsung Screenshot of Tablet Radio Profile Creation for How to Configure Eos Tools Pro in RTK Mode on Android

Validating You Are Receiving RTK Corrections

To confirm that your receiver is receiving RTK corrections, go to the Position menu and verify the following:

  1. The Diff Status has changed from GPS/DGPS to RTK Fixed or Float.
  2. The HRMS value has changed to lower numbers (e.g., a few centimeters or better) when in RTK Fixed.
  3. The Diff Station ID has changed to the ID of your base station or RTK network mountpoint (3 or 4 digits).
  4. The Diff Age (age of the corrections received) is now around 1-2 seconds.
Samsung Screenshot of Position Tab for How to Configure Eos Tools Pro in RTK Mode on Android

You can also check the RTK Status tab for the same values. You will also see the type of corrections received and the baseline length (i.e., distance from rover to the base station).

Samsung Screenshot of RTK Status for How to Configure Eos Tools Pro in RTK Mode on Android

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