u-center 2 user guide

User guide release date: November 18, 2025

u-center 2 version: v25.10.1

Legal disclaimer

u-blox or third parties may hold intellectual property rights in the products, names, logos, and designs included in this document. Copying, reproduction, or modification of this document or any part thereof is only permitted with the express written permission of u-blox. Disclosure to third parties is permitted for clearly public documents only.

The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either express or implied, is given with respect to, including but not limited to, the accuracy, correctness, reliability, and fitness for a particular purpose of the information. This document may be revised by u-blox at any time. For most recent documents and product statuses, visit www.u-blox.com.

1 Overview

u-center 2 is u-blox's powerful tool for configuration, evaluation, and debugging of u-blox GNSS receivers and services.

It allows the end users to assess and test u-blox positioning chips, modules, evaluation kits, application boards and similar devices for navigation and positioning performance.

This document provides a guide for starting to use the features of this software and explains how to resolve common use cases.

2 System requirements

u-center 2 has been tested on Windows 10 (64 bit) platform and runs on Windows 10 and above. It currently supports u-blox gen 10 and u-blox gen 20 GNSS devices.

3 Getting started

3.1 Installing u-center 2

u-center 2 can be downloaded from u-center website. The u-center 2 package comes with a setup file. Click the file and follow the steps to install the application. Administrator rights are only needed when the application is installed for all users. Once the installation has completed successfully, you need to enter your u-blox support portal account credentials and log in with a browser. FireFox is the recommended browser for u-center 2.

After login, having internet connectivity, u-center 2 will start and can also be used offline.

3.1.1 Updating u-center

After each start - or for continuously running software every 24 hours - the application will check for possible updates. If an update is available, then the application will download it in the background and will inform the user by a notification. User settings and login credentials are not affected or changed.

If the user dismisses the update it will still be available from the "Help" menu in case the user intends to perform it later on.

When the user starts the update process, the installer starts and asks the user to close the running application. After finishing the installation the software will be restarted.

3.1.2 User feedback

If you want to share your feedback to improve u-center 2 further, select User feedback option in help menu.

3.2 Connecting a local device

To evaluate u-blox devices, make sure you have the appropriate USB driver installed in your system. To connect a local device to the u-center 2:

Click the Data sources icon on the left menu bar.
Click Add data source.

Tip: Instead, you can use the keyboard shortcut Ctrl + D to open the Add data source modal having Local device selected and skip the extra clicks.

You will see the following modal:
Select the COM port of the device. For connecting the device in safeboot mode, check safeboot in Device management.
Select autobauding for automatic detection of the baud rate or deselect it to manually select the baud rate.
Click Add device button.

After the last step a new data source should be added to your Data sources panel. If there are no other active data sources in your panel, then the connection switch turns green as a signal of a valid communication and an indicator will show if u-center 2 is receiving messages or not.

Device receiving data

Receiving data

Device not receiving data

Not receiving data

If you're not receiving data, this could happen for a couple of reasons:

All messages are disabled on the connected device.
The baud rate is incorrect. In this case, you'll notice that Hardware, Firmware, and Interface fields will show as empty or unknown.

4 Device management

Once you have connected the device, you can view the device's connection status and information on the data sources panel. The device information shows the hardware and firmware versions, the physical interface that is connected to as well as a drop-down menu with a list of predefined baud rates.

Additionally, you can use these detection buttons to trigger the detection of the current baud rate or the communication interface:

Detect baud rate

Detect baud rate

Detect communication interface

Detect communication interface

4.1 Types of data sources

u-center 2 supports three types of data sources that you can connect to and manage:

Local device: Physical u-blox receiver connected via USB or serial port - How to connect
Log file: Previously recorded data files for analysis and playback - How to add log files
TCP connection: Remote device accessed through network connection - How to connect

All data sources appear in the data source panel and support data visualization in views. However, configuration capabilities vary: local devices and TCP connections support full configuration management, while log files are read-only for analysis and playback purposes.

4.2 Data source indicator

Data sources (devices and log files) have a Data source indicator number in the left hand corner to identify them. Most open views have this indicator in the top left corner to show which data source the view is connected to and getting data from.

Click a view’s Data source indicator and select one of the available data sources to "attach" it to that view.

Similarly, in the Data sources information panel, click the Data source indicator number and select Attach all views to link all open views in the selected tab to this data source.

4.3 Configuration actions

To save, load and revert to default configuration, press the Data source configuration actions button in the data source panel and select the proper action from the pop up menu.

Save: Saves the current receiver configuration from RAM to battery backed RAM (BBR) and flash memory.
Load: Loads the last saved configuration from BBR and flash, overwriting the current RAM configuration. Note that if a Revert was performed since the last Save, there will be no saved configuration to load.
Revert: Reverts to the default firmware configuration and clears all the configurations done in BBR, flash or the RAM layer of the receiver.

4.4 Restarting a device

When a receiver is connected and communication is established, the Restart section gives the option to send a Cold start, Warm start or Hot start command to the receiver.

Effect of the restart commands

Cold start: All information is deleted from the receiver's memory.
Warm start: Only the ephemeris is deleted from the receiver's memory.
Hot start: No data is deleted from the receiver's memory.

4.5 Enabling/disabling debug messages

Press the Debug messages dropdown button in data source panel. Select Enable debug messages or Disable debug messages to enable or disable them. If u-center 2 can't identify the product type it will enable or disable the common set of debugging messages which is applicable for all products.

4.6 Resetting collected data

To show historical data in various views, u-center 2 collects message data from the connected data source. To reset the views and clear this data, press the Reset data button.

Tip: To quickly Reset data and skip extra clicks, use the keyboard shortcut Ctrl + Alt +F.

4.7 Connecting a device in safeboot mode

Some configurations require the receiver to be in safeboot mode. To add a u-blox device that is in safeboot mode to u-center 2:

Ensure that your device is in safeboot mode. For details, check the Integration manual of the receiver, available on u-blox.com.
Click the Data sources icon on the left menu bar.
Click Add data source.
Select the COM port of the device.
Select the safeboot option for connecting to the device in safeboot mode. This will also send the training sequence in the background to be able to synchronize with the external clock.

4.8 Connecting to a TCP server

Data sources can now be accessed remotely through any serial to TCP utility such as ser2net, serialbridge.

To add a TCP connection in u-center 2:

Click the Data sources icon on the left menu bar.
Click Add data source.
Click TCP connection.

Tip: Instead, you can use the keyboard shortcut Ctrl + T to open the Add data source modal having TCP connection selected and skip the extra clicks.
Enter the network address in this format: tcp://host:port, i.e. tcp://192.168.0.1:8721.
Click Add connection.

You can now interact with the connected receiver normally. However, note that the baud rate can only be changed on the remote host.

5 Device configuration

To access the device configuration menu:

Open the Data sources panel by clicking the Data sources icon on the left menu bar.
Select the Data source configuration button.

This will display the Device configuration window.

Note that you can pop out the Device configuration window and move it outside the u-center 2 application. It can remain open while you are working with the other windows in the u-center 2 application.

Tip: To open the Device configuration window quickly without extra clicks, use the keyboard shortcut Ctrl + G.
Select Quick configuration for user-friendly configurations, or
Select Advanced configuration for expert configuration options.
Select one of the Saved configurations to apply a previously saved set of advanced configuration items.

Note that the configuration menu is also available even without connecting devices.

5.1 Quick configuration

Quick configurations are an easy way to configure the device.

5.1.1 Constellation configuration

To enable or disable satellite constellations and their signals, select Constellation configuration. Click Send to apply your configuration to the device.

Signal plans

The Signal plans feature simplifies configuration by offering a set of predefined, thoroughly tested signal combinations. This ensures reliable performance and predictable results without the need to manually test countless configurations.

If the connected device supports Signal plans, you can select one from the signal plan selector. The constellations and signals included in the chosen plan become active and can be enabled or disabled as needed.

Constellation configuration select signal plan

Click Send to apply any signal, constellation, and signal plan changes to the device. Constellations and signals that appear grayed out are either unsupported or not included in the selected plan. Hovering over an inactive item displays the reason.

Constellation configuration unsupported signal

5.1.2 Time mode

This section allows the simple configuration of time mode compatible devices which support CFG-TMODE-* configuration items. Your selections will be used to construct a set of CFG-TMODE-* configuration items grouped in a single UBX-CFG-VALSET message that can be configured in three different layers of the connected device.

If no device is connected, it is still possible to copy the generated string and share it.

To set the timing device into base mode, enable the survey-in procedure or specify fixed coordinates. To find the appropriate values to configure in different modes, check the product Integration manual. The following configuration options are available:

Disabled: Disables any base mode configuration that has been done on the device before.
Survey in: Sets the device to survey-in mode. This requires setting how long the survey needs to at least last and the minimum required accuracy, both of which will depend on the environment of the base location.
Fixed: Configures the device in the timing mode in which the fixed coordinates, position accuracy and position type are given to the device. The position type can be provided as geocentric coordinates or geographic coordinates.

5.1.3 Time pulse mode

This section allows the simple configuration of time pulse mode compatible devices which supports CFG-TMODE-* configuration items. Your selections will be used to construct a set of CFG-TMODE-* configuration items grouped in a single UBX-CFG-VALSET message that can be configured in three different layers of the connected device. If no device is connected, it is possible to copy and share the generated string in need.

Check the device integration manual for the parameters to choose for device global settings and Time pulse settings.

5.1.4 OSNMA configuration

To enable support for the Open Service Navigation Message Authentication (OSNMA), configure the receiver to compile the following messages:

UBX-CFG-VALSET with a list of configuration properties.
UBX-MGA-GAL-OSNMA_PUBKEY to define the public key.
UBX-MGA-GAL-OSNMA_MERKLE to define the Merkle tree.
UBX-MGA-INI-TIME_UTC or UBX-MGA-INI-TIME_GNSS to define the trusted time.

If no device is connected, it is possible to copy and share the individual messages that make up the OSNMA configuration.

To retrieve the currently stored OSNMA-related configuration items, click Reload values.

You can set the Public Key and Merkle Tree information in two ways: either by uploading the respective XML files containing the keys or by manually entering the values in the corresponding input fields.

Note: Each subsection - OSNMA settings, Public key, Merkle tree root and Trusted time - can be configured and sent independently.

For information on the global device setting and OSNMA setting parameters, see the device Integration manual.

5.2 Advanced configuration

The Advanced configuration panel allows a device to be configured by sending individual configuration item key ID and value pairs to the device's random access memory (RAM), battery backed RAM (BBR) and flash configuration layers. In addition, the current configuration of the device can also be viewed by retrieving configuration items from the device's configuration layers.

5.2.1 Reading the device's configuration items

To read configuration items from the connected device, select the configuration item of interest from the Items panel. This sends a poll request to the device. If the device supports the selected configuration item, the device will respond with the current values from each configuration layer (RAM, BBR, and flash), which will then be displayed.

The following additional options are available for the configuration items list by clicking the three-dot menu:

Capture all configuration layer values: Polls all supported configuration item values from all configuration layers. You can also click the dedicated button next to the menu. This retrieves values from all possible layers for configuration items supported by the connected device's firmware.
Create configuration list: Creates a configuration list from all items in the tree by adding them to the configuration changes list on the right side. The list can then be saved as a file in the Saved configurations section for export or sharing. This file can be imported later to apply to any compatible receiver for debugging purposes.
Clear configuration values: Clears all captured configuration items from the tree.

5.2.2 Filtering configuration items with presets

You can use preconfigured filters to narrow down the configuration items list. Access these filters through the button next to the filter field.

After clicking the button you have the following preset filter options:

Show items with values: Displays only configuration items that have captured values. When applied after capturing all configuration values from the connected device, this shows the complete list of configuration items supported by the device's firmware version.
Show RAM != Default: Displays only items where the RAM layer value differs from the default value. When applied after capturing all configuration values, this shows all items that have been modified from the firmware's default configuration.

5.2.3 Setting the device's configuration

Configure your device by sending individual configuration item key-value pairs to the device's RAM, BBR, or flash configuration layers.

To configure the device:

In the Configuration items panel, select a configuration group to expand the item tree.
Select the specific configuration item you want to modify. This displays its current values across all layers and shows detailed information in the right panel.
Enter or select the desired value.
Select the layers to write to.
Click the Set button to add the item, its value, and the target layers to the Configuration changes list.
Repeat steps 1-5 to build your complete list of configuration changes.
Review your configuration changes before sending them to the device. Items are sent in top-to-bottom order. You can reorder items by dragging them to new positions, or remove items by clicking the Clear button.

By default, each configuration item is sent as an individual UBX-CFG-VALSET message. Enable Send configuration in batch mode to group properties into one UBX-CFG-VALSET message per layer, reducing the total number of messages and improving transmission speed.

To modify an existing item in the list, click the Edit button or double-click the item. The item will appear in the top panel where you can change its value and/or target layers. Click Update to save your changes or Cancel to discard them.
To review the configuration items as hex codes, select the Message hex codes tab. This shows the hex representation of UBX-CFG-VALSET or UBX-CFG-VALDEL, and UBX-CFG-VALSET messages for each configuration item if applicable. If you want to copy the message hex codes, either hover over the hex code of interest and click the copy icon or right-click and select copy from the menu.

Select Send configurations in batch mode to view the the hex code of the configuration items grouped together for each layer.
To change the UBX-CFG-VALSET type, choose the VALSET type from the dropdown list in the Send options section. Changing the type updates the message's hex representation. The default UBX-CFG-VALSET type is without transaction support.
Click Send to send the changes to the device. The configuration items successfully accepted by the device are indicated with a green check mark . A red alert triangle indicates the key is unknown to the device firmware or the configuration is not valid (the validity of a configuration is checked only if the message applies to the RAM configuration layer).

To save the Configuration changes list and add it to the list of Saved configurations, click Save as....

5.2.4 Saving configuration files

In the device configuration dialog, the panel on the left shows a list of saved configurations. Saved configurations can be useful if a set of configurations shall be applied for a certain use case, but the device is used for different use cases. It can be helpful to compare the performance of a device when applying different saved configurations. Saved configurations can also be imported and exported for an easy exchange between different users.

To load a configuration, just select it. The configuration changes defined in the file will appear in the configuration changes list on the right.

Once loaded, the configuration changes can be sent to the connected device indicated in the top right corner of this dialog by selecting the Send button.

You can edit the configuration list by adding new items or removing existing ones using the Clear button. To delete all items at once, use Clear All. After making changes, you can save the original file, save the list as a new file, or revert to the file’s original content.

The symbol * in front of the saved configuration name indicates that this list has been changed.

By selecting Save changes, the configuration list will be saved back to the configuration file it originated from, that is highlighted with a * in front of its name in the list of Saved configurations.

By selecting Save as.., the modified configuration list can be saved in a new file. Once it is saved it will be shown in the list of Saved configurations.

By selecting Revert changes, the configuration list can be reverted to when it was loaded from the selected configuration file.

To rename a saved configuration, hover over the chosen configuration name and select the more options menu. Then select 'Rename' from the menu.

In the dialog that appears, enter the new name, and click Rename. Click Cancel if you decide not to rename this file.

To delete a saved configuration, hover over the chosen configuration name and select the more options menu. Then select 'Delete' from the menu.

In the dialog that appears, click Delete. Click Cancel if you decide not to delete this file.

To import a saved configuration file, select "Import".

In the dialog that appears, navigate to the .cfg file you wish to import. Select it and click OK. The selected file will be imported and will appear in the configurations list.

To export a saved configuration, hover over the saved configuration name and select the more options menu. Then select Export from the menu.

In the dialog that appears, navigate to the folder you wish to export the configuration to and specify the name of the file to be created, then click OK. The configuration .ucf file will appear in the selected folder.

Additionally, you can define a description to a saved configuration. Click the Description tab and enter any relevant details or additional context in the text area. Click Save changes to store the description. When the configuration is reopened, the saved information will be available in the Description tab.

6 Log recorder and player

6.1 Recording a new log file

u-center 2 has a device log file recording feature to collect and play back a log file.

To record a log file, press the record icon in the connected device's Data sources panel.

On the dialog displayed, select the file location by selecting the Change option and type in the log file name.

By selecting/deselecting the "Enable all debug messages" checkbox you decide if additional debug messages will be stored in the log file. Enabled debug messages may help with log file analysis during playback.

By selecting/deselecting the "Add GNSS device configuration data to the log file" checkbox, you can choose to have the active device's configuration read and saved in the log file. The configuration data can be very useful when using a log file to debug the operation of a device.

Select Record log to start recording.

When recording a log file, the recording controls are displayed in the connected data source info panel.

This panel allows you to stop the recording, view how long you have been recording for, if you have enabled debug messages, and if you have chosen to save the device configuration. If you did not select either debugging messages or saving the configuration at the start of the recording, then selecting the corresponding indicators will enable these at any time during the log file recording. Once selected, they cannot be deselected from this panel.

Click the Folder button to open the folder where the recording file is stored.

Press Stop recording to finish recording. Two log files with different formats will be saved at the selected location. One with extension .uc2 and another with extension .ubx.

Log files with the .ubx extension are created only for backwards compatibility with existing scripts and u-center legacy. They cannot be used directly by u-center 2. u-center 2 can only play log files with the .uc2 file extension which have the timing information.

6.2 Playing a log file

To play a .uc2 log file, show the Data Source panel, select the Add data source icon and, on the resulting dialog, select the Log file tab. Note: to play .ubx files, they need to be converted to the .uc2 format first.

Tip: You can also use the Ctrl + L keyboard shortcut to open the Add data source dialog and skip extra clicks.

Next, click the Select a file input field to open the browse files dialog. Select a log file and click Open. Alternatively, you can choose a file from the recently used list below the text input field.

If there is a device actively connected to u-center 2, a pop-up informs that the device will be disconnected. If opening the log file succeeds, a new data source is added to the side panel:

When you select Play, all the views in the tab use the log file as their data source and change their data source indicator to the log file's indicator.

With the new .uc2 format it is possible to navigate log files based on time or message number, by selecting one of the navigation mode selector buttons:

For the log files recorded with u-center 2 both modes are available, while for log files converted from the raw .ubx format only message-based navigation is supported, and the time option is disabled:

This mode is available for converted and natively recorded .uc2 files. It is possible to play back a log file at different speeds selected from the drop-down menu:

Drag the slider to navigate in the log file or use the Jump to feature to jump to a specific message by clicking the message number indicator. It will turn into an input field and pause the playback. Enter the message number to jump to the selected message.

Note that Jump to navigates to the message that will be played next.

This mode is currently available only for log files recorded with u-center 2. It plays the log file with the same speed it was recorded. If the information in the log file covers a period of 2 minutes it will take 2 minutes to play it back. To play it with higher speeds select 2x from the drop-down menu:

The navigation in the file is similar to the Message based navigation. Drag the slider to navigate in the log file or use the Jump to feature to jump to a specific time by clicking the time indicator. It turns into an input field and pauses the playback.

Just enter the time to jump to

Note that jump to navigates to the message whose timestemp is the closest but less than the requested time.

6.2.3 Play a log file in Loop mode

When the Loop mode preference is enabled, the file plays in an infinite loop. All the data in the views is reset at the end of each loop.

Enable the Loop mode from the User preferences window.

6.3 Resetting collected data

To show historical data in various views, u-center 2 collects message data from the connected data source. To reset the views and clear this data, press the Reset data button.

7 Workspaces

To open the workspace menu, either select the workspaces button on the left menu bar, or click on the name of the active workspace in the left of the top menu bar.

The active workspace indicator shows the state of the current workspace. The state is either saved, unsaved or read-only.

Only the Preset workspaces can be in the read only state.

Once the workspace menu is open, it will show under Your workspaces a list of user defined workspaces, and under Preset workspaces some system defined workspaces.

7.1 Preset workspaces

With preset workspaces, the application can be used without any initial modifications or preliminary knowledge of the views, they are populated with a basic set of views and with the usage of the simple message enabler (see chapter 8.1) customers can easily start evaluating our products.

To avoid any accidental overwrite, the workspaces in this list are read only.

7.2 Creating your own workspaces

Select New workspace to create a user-defined workspace which is listed in the Your workspaces list. The workspace can be new or based on an existing workspace and requires a unique name.

A new, empty workspace contains a single tab. If based on an existing workspace, the workspace is a duplicate of the selected workspace.

Tabs can be renamed by a double click, replaced by dragging and deleted with the icon. In each tab, you can add different views by clicking on the add view icon at the top of the left menu bar. The Add view panel will open over the main window. Multiple views can be added this way to the active tab.

7.3 Managing workspaces

By hovering over any workspace in the Your workspaces or Preset workspaces lists, a kebab menu with additional options to manage the workspace will appear.

The user-defined workspaces can be deleted, saved as, renamed, duplicated or exported depending on the currently active status. For the Preset workspaces, only the duplicating option is available.

The export feature enables you to share your custom workspace with another u-center 2 user. The exported workspace can be easily imported to u-center 2 and used for evaluation.

To import the workspace, click on the Import workspace button.

7.4 Active workspace

The active workspace controls are always available, quickly allowing actions to be performed on the active workspace without having to open the workspace panel.

If the status icon shows that the active workspace has been modified, selecting it will save the workspace.

By clicking the arrow to the right of the status icon, a menu of more options will be displayed. These options allow the active workspace to be saved, saved as, renamed or deleted.

8 Views

To visualize and evaluate data coming from the device, views can be added to any workspace tab. To select and add a specific view to your actual tab, select on the left side of the application. Each view will show the receiver identifier in left hand corner to show which receiver this view is getting data from.

8.1 Simple message enabler

On most views, it is possible to enable all necessary messages with the ease of clicking a button. New users can study information coming from the receiver without preliminary knowledge about the underlying technology. Experienced users will also benefit from this feature as it saves time.

8.2 Message view

Message view captures the latest received instance of each message known by the device. It can be used to capture the contents for the latest messages received and to poll, enable, or disable a message. The message tree shows the descriptive names of the messages.

Selecting a message from the tree, you can view the contents of a message. To see how recent the message is, check the timer on the top right. The columns in the tables are resizable.

The message tree displays all the available messages for inspection. It is the filtered version of the messages valid for the connected device firmware and protocol specification version. Selecting a message in the the tree will show its content on the right side panel. If the selected message has not been received and autopolling is disabled the right panel should be empty.

Recent messages are highlighted in bold on the message tree. Each message in the tree has its own (i) information button which, when clicked, will bring up the message documentation dialog.

Note that the Documentation window is a detachable separate window that can be moved anywhere outside of u-center 2 application and does not have to be closed in order to keep working in the main u-center 2 application.

8.2.2 Enabling, disabling and polling messages

Hovering over a message in the tree brings up an options menu (three dots).

When you select the three dots, the options Poll, Enable, and Disable will be available.

Poll message: this is only available for UBX protocol messages. It will ask the device to send the message only once to u-center 2.
Enable message: the message becomes enabled and will be sent periodically by the device.
Disable message: the message will not be sent periodically anymore by the device.

Another way to enable a message is by double clicking on the name of the message. If the supported protocol specification of the connected device and u-center 2 are not compliant, some options could be grayed out.

8.2.3 Message inspector

With the message inspector, you can view the detailed content of a message. To see how recent the message is, check the timer on the top right. Open the documentation dialog to get help about the different attributes of a message.

8.2.4 Lock messages

Prevents updates of the view with new incoming messages.

8.2.5 Autopoll

Enables automatic polling for messages as you select them in the tree.

8.2.6 Filtering

Use the Filter field to display the messages that match the entered text. By default, the filter is case-sensitive and applies a logical “AND” to multiple filter conditions entered separately. Standard regular expressions are also supported.

A pre-configured filter is available to display only command, input, and set message types. Click the Filter button to enable or disable this filter as needed.

8.2.7 Command, input and set messages

Although most messages a receiver supports are just output messages that come from the receiver, there are some messages which allow a host (u-center 2 in this case) to control the receiver in various ways. These can be command, input or set messages. These can be command, input, or set messages. To focus on these, use the pre-configured filter to exclude all output messages, as described in the previous section.

If one of these messages is selected, the Message view will show the message's input fields as a form.

Select the version of the message to be sent.

Then enter values into the various fields and select any options presented. Finally press the Send button to send the message to the receiver.

8.3 Console view

The Console view captures messages from the connected device or from the log file player, displaying them along the GPS time (if available) with millisecond precision.

Note: When a position fix is not achieved, the GPS time values displayed on the console may be inaccurate.

8.3.1 Console view types

You can view the Console view in three different ways.

Packet (default) displays each message name, size and short description.
Binary displays each message in hex format.
Text displays NMEA messages in text format.

Right clicking on any message in the console view will bring up a menu that allows you to copy any of the packet, binary or text representation of the message.

8.3.2 Lock data

Locking data prevents updates of the Console view with new incoming messages.

8.3.3 Clear data

To clear the contents of the Console View, click Clear data.

8.3.4 Message inspector

With message inspector, you can view the contents of a message. To inspect the contents of a message, click Inspector .

Select the (i) information button which, when clicked, will bring up the message documentation dialog.

8.3.5 Filtering messages

Use the filter field to filter incoming messages based on the text entered in the field. By default, the filter is case-sensitive and applies logical "and" for all the separately entered filter conditions. This also supports all the regular expressions to filter the messages. The regular expression must be written inside slash icons. Valid regular expression filters are shown in red.

8.4 Data view

Displays various important values used for GNSS navigation.

They are:

Fix mode - GNSS fix type
TTFF - Time to first fix (only available when UBX messages are enabled)
Longitude - Longitude
Latitude - Latitude
Altitude - Altitude
Velocity - Velocity
UTC time - Time of the last message
3D acc. - Position Accuracy Estimate
2D acc. - Horizontal accuracy estimate
PDOP - Position DOP
HDOP - Horizontal DOP
Satellites used in navigation
Satellites not used in navigation
Satellites not tracked

8.5 Map view

The map view displays the reported location from the connected device or a log file playback on a map. You can use normal map controls to zoom in and out or switch the map type.

When a map view is displayed for the first time, the map is not automatically loaded. Click on the map view to load the map.

Advanced markers button provides the following options:

Protection level (PL): By selecting the Protection level option, the map view displays the protection level surrounding the fix position. The protection level information is provided by the UBX-NAV-PL message, so this needs to be enabled. To enable the message, press the map view's message enable button.
Position accuracy (PAcc): By selecting the Position accuracy option, the map view displays the position accuracy surrounding the fix position.

When both of these are selected, the Map view displays the protection level and position accuracy.

The Breadcrumb trail button displays a map view with the played log file's breadcrumb trail. Click on an epoch in the breadcrumb trail to open up an information pane with information on the latitude, longitude, altitude, velocity, UTC time and the number of the satellites used.

Use the number of points selector to set how many breadcrumb trail points are rendered on the map.

Show buildings button will show the 3D buildings in the map. Can change the orientation by holding the right click button of the mouse.

Follow current position: OFF button provides following current position option, draggable map and breadcrumb trail point coloring based on the fix type. Turn it ON to enable following current position.

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