> For the complete documentation index, see [llms.txt](https://support.senterasensors.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.senterasensors.com/home/fieldagent-mobile-ios/60-second-guides/trimble-mobile-manager.md).

# Trimble Mobile Manager

Learn how to connect your Trimble DA2.

{% hint style="success" %}
Before capturing Field Points:

* Trimble Mobile Manager must be running in the background.
* Your DA2 must be [connected](https://help.trimblegeospatial.com/Catalyst/DA2-connection.htm) via Bluetooth.
* For RTK corrections, you must have an active [RTK session](https://help.trimblegeospatial.com/TMM/Catalyst-screen.htm).
  {% endhint %}

***

## Motivation

I want to capture Trimble DA2 coordinates for [FIeld Points](/home/fieldagent-mobile-ios/60-second-guides/ground-control-points.md).

***

## Requirements

* Make sure that your DA2 is powered on and [connected](https://help.trimblegeospatial.com/Catalyst/DA2-connection.htm) via Bluetooth.
* If you still need to set up your DA2 and TMM app, please refer to the [Trimble Documentation](https://help.trimblegeospatial.com/TMM/Installation.htm) for details.
* You will likely want to select `WGS84(G1762)` for the GNSS Output Frame.

{% hint style="info" %}
Verifying the selected reference frame and ensuring that it meets the project requirements is a critical practice. 

See the [Trimble Documentation](https://help.trimblegeospatial.com/TMM/Configure-GNSS-output.htm) for information on changing the reference frame.
{% endhint %}

***

## Steps

Open the Trimble Mobile Manager, then:

1. Tap on the Home tab.
2. Tap on the Select button.
3. Tap on your Trimble DA2 in the left menu.
4. Tap the Connect button.
5. Background the app.

{% hint style="success" %}
With TMM running in the background and your DA2 connected via Bluetooth, FieldAgent mobile can read the RTK-corrected position data.
{% endhint %}

You can start an [RTK session](https://help.trimblegeospatial.com/TMM/Catalyst-screen.htm) anytime.

<figure><img src="https://3961074089-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZgxcabwSCSKC3cebaIwD%2Fuploads%2FyVz9I3rfj8JcSXXR1oze%2FTMM%20Connect.gif?alt=media&amp;token=ed02c3bf-d0da-4afa-8e93-961d704d83cb" alt=""><figcaption><p>Connecting your DA2 in TMM</p></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://support.senterasensors.com/home/fieldagent-mobile-ios/60-second-guides/trimble-mobile-manager.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.