# To configure a base internet data link

1. Tap and select Settings / Survey styles. Select the required survey style. Tap Edit.
2. Select Base data link.
3. Set the Type field to Internet connection.

4. To select the GNSS correction source (where the Trimble Access software will upload RTK corrections to), tap to open the GNSS correction source tab of the Connections screen and select the GNSS correction source you have set up and then tap Accept.

   - To configure settings for a new GNSS correction source, tap New.

   - To change the settings for an existing GNSS correction source, select the source in the list and tap Edit.

   For more information, see GNSS correction source options for the base.

5. Select the Prompt for GNSS correction source check box if you want the software to ask which GNSS correction source to use at the start of each survey.

6. To select the GNSS internet source (how the GNSS base will connect to the internet for GNSS corrections), tap to open the GNSS internet source screen and select the required GNSS internet source and then tap Accept.

   - To configure settings for a new GNSS internet source, tap Add.

   - To change the settings for an existing GNSS internet source, select the source in the list and tap Edit.

   For more information, see GNSS internet source options for the base below.

7. Select the Prompt for GNSS internet source check box if you want the software to ask which GNSS internet source to use at the start of each survey.

8. Tap Accept.

9. Tap Store to save your changes to the survey style.

GNSS correction source options for the base

1. In the Base data link screen of the survey style, tap next to the GNSS correction source field to open the GNSS correction source tab of the Connections screen:

   - To configure settings for a new GNSS correction source, tap New.

   - To change the settings for an existing GNSS correction source, select the source in the list and tap Edit.

2. Select the Base operation mode:

   - In most cases, the receiver at the base will upload data to a broadcast server. Select Upload data to remote server.

     If the receiver is connected to the internet through an external device such as a smartphone or MiFi device then you must leave the device connected to the receiver at the base.

   - If the receiver at the base will operate as the base server, select Operate as a server and enter the IP Port.

     To operate as the base server, you must leave the controller connected to the receiver at the base.

   When the receiver at the base will:

   - Operate as a server, the base must have a static public IP address.

   - Upload data to a server, the base can have a local IP address.

3. Configure settings for the selected GNSS correction source. See:

   - To upload corrections to an NTRIP server

   - To upload corrections to a broadcast server

To upload corrections to an NTRIP server

1. Set the Use NTRIP switch to Yes.
2. To force the Trimble Access software to always use NTRIP version 1.0, select the Use NTRIP v1.0 check box.

3. To connect to a mountpoint on starting a survey without being prompted for the mountpoint name, enter the Mountpoint name.

   If a mountpoint name is not specified, the system will prompt you when you start a survey. Your selection will then be stored in the GNSSCorrectionSource.xml file in the Trimble Data\System Files folder. If the specified mountpoint cannot be accessed when you start the survey, a list with available mountpoints appears.

4. If a user name and password are required to use NTRIP server, enter the details in the NTRIP username and NTRIP password fields.

5. Enter the IP Address and IP Port of the NTRIP server you obtained from the operator of the server.

   If the GNSS internet source is Controller internet, then the IP Address and IP Port values are displayed in the IP Settings of this base field in the Base screen that appears on the controller connected to the base receiver once you start the base survey.

   If the IP address of the base controller appears to be invalid, Trimble recommends that you perform a soft reset of the device before you connect to the internet and start the base.

6. If the server Trimble Access is connecting to requires Transport Layer Security (TLS) internet data encryption, set the Use TLS encryption switch to Yes. This setting supports TLS version 1.2 or later.

7. Tap Store.

For more information, see NTRIP server settings.

To upload corrections to a broadcast server

1. Set the Use NTRIP switch to No.

2. Enter the IP Address and IP Port of the server you obtained from the operator of the server.

   If the GNSS internet source is Controller internet, then the IP Address and IP Port values are displayed in the IP Settings of this base field in the Base screen that appears on the controller connected to the base receiver once you start the base survey.

   If the IP address of the base controller appears to be invalid, Trimble recommends that you perform a soft reset of the device before you connect to the internet and start the base.

   To connect a rover to the base, you must start a mobile internet base with a public IP address.

3. If the server Trimble Access is connecting to requires Transport Layer Security (TLS) internet data encryption, set the Use TLS encryption switch to Yes. This setting supports TLS version 1.2 or later.

4. Tap Store.

GNSS internet source options for the base

1. In the Base data link screen of the survey style, tap next to the GNSS internet source field to open the GNSS internet source screen.

2. Select how you want to connect to the internet and then tap Config. See:

   - To connect the receiver to the internet using the receiver's modem

   - To connect the receiver to the internet using a Wi-Fi network

   - To connect the receiver to the internet using a cable

   - To connect the controller to the internet

   - To connect the controller to the internet through another device

To connect the receiver to the internet using the receiver's modem

Trimble receivers with an internal modem running firmware released after 2017 can use a Receiver internet – modem connection.

To configure Receiver internet - modem as the GNSS internet source:

1. In the GNSS internet source field, tap to open the GNSS internet source screen and select the connection named Receiver internet – modem. Tap Accept.

   In most cases, you will not need to edit the Receiver internet – modem connection settings.

2. If the SIM card in the receiver has a PIN, enter the PIN in the Modem pin field.
3. Tap Store.

If you try the connection and it does not work, further configuration may be required:

1. In the GNSS internet source field, tap to open the GNSS internet source screen.

2. Select the connection named Receiver internet – modem and tap Edit.

3. The CID field shows the context ID to use. Usually a SIM card has only one context ID (CID). To get the defined context IDs from the SIM card in the receiver, tap and select Load from modem and then select the CID to use.

4. In the APN field, tap to choose the method for selecting the Access Point Name (APN) for the internet service provider. This is the service provider that provided the SIM card in the receiver:

   - Choose SIM default to use the APN profile directly from the SIM card in the receiver.

   - Choose Select Access Point Name (APN) to select your Location and your Provider and plan from the APN wizard in Trimble Access. Tap Accept.

   - Choose Load from modem to connect to the modem and load and store the APN information from the modem to the GNSSCorrectionSource.xml file in the Trimble Data\System Files folder. The stored settings will be used whenever you connect using this GNSS correction source.

     The Load from modem option is available only if the receiver has firmware version 5.50 or later installed.

5. Enter the Cellular username and Cellular password. By default these fields are both set to guest.
6. Tap Accept.
7. In the GNSS internet source screen, tap Accept.
8. Tap Store.

To connect the receiver to the internet using a Wi-Fi network

If you have an external device that has a SIM card in it such as a cell phone or a MiFi device that you can leave at the base station then you can connect the receiver to the internet using a Wi-Fi connection to the external device.

To configure Receiver internet – Wi-Fi as the GNSS internet source:

1. In the GNSS internet source field, tap to open the GNSS internet source screen and select the connection named Receiver internet – Wi-Fi. Tap Accept.

2. To edit the receiver Wi-Fi connection settings, tap Edit. The Trimble Access software must be connected to the receiver for you to be able to edit the receiver Wi-Fi connection settings. Alternatively, you can leave the settings as they are for now and edit them when you connect to the receiver when starting the base survey.
3. Tap Store.

To configure the receiver Wi-Fi connection settings:

1. Make sure the external phone or MiFi device is on.

2. If the selected survey style has the GNSS internet source field set to Receiver internet – Wi-Fi, then when Trimble Access connects to the receiver the Receiver Wi-Fi configuration screen appears.

   If the software warns that the receiver must be restarted in Client mode, tap Accept. Once the receiver restarts, Trimble Access automatically reconnects to the receiver and shows the Receiver Wi-Fi configuration screen.

3. Select the Client tab.

4. Make sure the Enabled check box is selected.

5. To add a Wi-Fi network, tap Scan. From the list of available networks, tap the network you want to add.

   The software returns to the Receiver Wi-Fi configuration screen, showing the selected network in the table.

6. To edit connection settings to the network, for example to enter a password, tap Edit. Make your changes and tap Accept.

7. Tap Accept.

8. To confirm that you want to use the first network in the list, tap Enter in the Receiver Wi-Fi configuration screen.

   Trimble Access continues starting the base survey.

To connect the receiver to the internet using a cable

If you are setting up a permanent base station with an external device that will connect to the internet such as a laptop, you can connect the receiver to the external device using an ethernet cable.

To configure Receiver internet – Cable as the GNSS internet source:

1. In the GNSS internet source field, tap to open the GNSS internet source screen and select the connection named Receiver internet – Cable. Tap Accept.

2. Tap Store.

To connect the controller to the internet

Typically, you will need to disconnect the controller from the base receiver after survey setup so that you can use it at the rover. In that case you must use a Receiver internet connection. Only use a Controller internet connection if you can leave the controller connected to the base receiver during the survey.

When using a Controller internet connection, you can connect the controller to the receiver using Bluetooth or a serial cable.

1. In the GNSS internet source field:

   1. Tap to open the GNSS internet source screen and select the connection named Controller internet.

   2. If you have not yet configured the Controller internet connection, tap Config in the GNSS internet source screen to open the operating system connection settings screen and set up the connection.

   3. In the GNSS internet source screen tap Accept.

2. Tap Store.

To connect the controller to the internet through another device

If you have another device such as an older receiver or a mobile phone that supports the Bluetooth DUN service, you can connect the controller to the internet through that device. You can also connect the controller to the internet through a separate smartphone.

To connect to the internet through a receiver or a mobile phone that is not a smartphone:

- The modem in the device must support the Bluetooth DUN service.

- The receiver must be an older Trimble receiver, such as the R10-1 or R8s.

If your receiver does not support Bluetooth DUN and you want to be able to use the internet on the controller, use a Controller internet connection.

To connect the controller to the internet using:

- a separate smartphone, connect to the smartphone and then select Controller internet in the GNSS internet source screen. For more information, see Internet setup using a separate smartphone.

- an older receiver or mobile phone, tap Add in the GNSS internet source screen. For more information, see Internet connection using another device.

Because data is being routed through the controller with this kind of connection, only connect the controller to the internet through another device if you can leave the controller connected to the base receiver during the survey. If you need to disconnect the controller from the base receiver after survey setup so that you can use it at the rover, then you must use a Receiver internet - modem or Receiver internet - Wi-Fi connection.