In this article, you will learn how to connect and manage a Trimble GNSS receiver using Trimble Mobile Manager (TMM) within the Irth Mobile app. This integration enables high-accuracy GPS positioning when working in the field and provides real-time connection status, device details, and troubleshooting tools directly from your task screen.

When you open a task, the task action bar displays a TMM status indicator next to the Update and Camera buttons.

The indicator updates automatically as the connection status changes.
 

Status Indicators	Meaning
	Blue Signal Indicator: TMM is connected and ready to provide high-precision GPS data.
	Red Signal Indicator: TMM is disconnected or experiencing an error.

Access the TMM Panel

To view connection details:

1. Open a task.
2. Tap the More (...) menu on the task action bar.
3. Select Devices > TMM.
    

Connected	Not Connected

The screen may include the following information and actions:

• Status Badge indicates whether the receiver is currently connected or not connected.
• Connected Since shows when the current connection session began.
• Last Connected displays the most recent connection timestamp when the receiver is disconnected.
• Battery Level shows the remaining battery percentage of the connected Trimble receiver, when available.
• Issue Banner displays GPS connection warnings along with troubleshooting guidance to help resolve connectivity issues.
• Disconnect ends the current connection session between the mobile device and the Trimble receiver.
• Reconnect attempts to re-establish communication with the Trimble Mobile Manager (TMM) application and the receiver.

This information helps users quickly verify connection health, monitor receiver status, and troubleshoot GPS connectivity issues when working in the field.

Irth Mobile automatically records connection and disconnection events to maintain accurate connection history information.

Disconnect from a Receiver

To end an active TMM session:

1. Open the TMM panel.
2. Tap Disconnect.
3. Confirm the status changes to Not Connected.
4. Verify the task action bar indicator changes to red.

Once disconnected, Irth Mobile stops receiving GPS positions from the Trimble receiver.

Reconnect to a Receiver

To restore a connection:

1. Open the TMM panel.
2. Tap Reconnect.
3. Irth Mobile briefly opens Trimble Mobile Manager to re-establish the connection.
4. Return to the task screen.
5. Verify the status changes to Connected and the action bar indicator changes to blue.

The Connected Since timestamp updates automatically when a new connection is established.

Troubleshooting

The TMM icon is red

Possible Cause: The receiver is disconnected or communication has been interrupted.

Resolution:

1. Open the TMM panel.
2. Tap Reconnect.
3. Verify the connection status changes to Connected.

GPS Not Connected Warning Appears

Possible Cause: GPS positions are not currently being received from the receiver.

Resolution:

1. Open the Trimble Mobile Manager app.
2. Confirm the receiver is powered on.
3. Verify the receiver is paired and connected.
4. Confirm the receiver is actively receiving positions.
5. Return to Irth Mobile.

Reconnect Does Not Restore Connectivity

Possible Causes:

• TMM is not installed.
• TMM is outdated.
• Bluetooth is disabled.
• The receiver is out of range.
• The receiver battery is depleted.

Resolution:

1. Verify TMM is installed and updated.
2. Ensure Bluetooth is enabled.
3. Move closer to the receiver.
4. Confirm the receiver has sufficient battery power.
5. Retry the Reconnect action.

No Device Connections Is Displayed

Possible Cause: A Trimble receiver has not been configured on the device.

Resolution:

1. Install Trimble Mobile Manager.
2. Pair a supported Trimble GNSS receiver.
3. Ensure the receiver is powered on.
4. Reopen the Devices menu.

Battery Level Is Low

Recommendation: Charge or replace the receiver battery before beginning location-critical work to avoid interruptions during field activities.

Q: Do I need to leave my task to view TMM information?

A: No. Connection status and device information are available directly from the task screen.

Q: Can I reconnect without restarting Irth Mobile?

A: Yes. The Reconnect option allows you to restore connectivity without restarting the application.

Q: Is the integration available on both Android and iOS?

A: Yes. The TMM integration is supported on both Android and iOS devices.

Q: What happens if my receiver disconnects?

A: The status indicator changes to red and warning messages appear to help you diagnose and correct the issue.

Q: Does Irth Mobile track connection history?

A: Yes. The application records connection and disconnection events and displays Connected Since and Last Connected timestamps.