GPS menu
To enter the GPS menu:
- Press the
key to enter the menu.
- Scroll to the GPS menu using the
or 
keys.
- Press the
key to enter the GPS menu.
Use the or keys to scroll through the 4 options:
- RESET: Select YES to reset the internal GPS.
- OFF: Select this to switch off the internal GPS module and save battery.
- RTK: Select this to switch on or off the RTK accuracy GPS/GNSS.
- EXIT: Select this to exit the GPS menu
4. Press the 
key to accept your changes and exit the GPS menu.
5. Press the key to exit the menu.
When SBAS is ON the GPS system may take longer to lock.
BT Reset impacts both SMLOG and iLOC.
Re-pair your MRX SG Marker locator with the PointMan® app after BT Reset and restart the app.
BT Reset only applies to BT classic, not BLE (used for iOS).
Internal GNSS ‘GPS’
MRX SG Marker locator has an internal GNSS module. When internal GPS is enabled, it will automatically try to “lock” onto a number of satellites as soon as the MRX SG Marker unit is turned on.
The time required for the GNSS module to lock onto the GNSS system varies depending on the length of time that has passed since the last time the locator was used, and on the presence of obstacles (like high buildings, trees, etc.) that obstruct sight to the sky.
If the unit has not been used for several days the time to first fix may take up to several minutes.
The MRX SG Marker locator display provides a number of icons indicating the presence of an internal and active GNSS and when this has locked to the GNSS system, the quality of the signal received or numbers of satellites received.
The accuracy of the GNSS module is affected by the number of satellites received and best accuracy is only reached when the signal quality is at its maximum.
GPS Icons
The LCD GNSS operation icons provide visual information about the status of the internal GPS module:
GPS status and satellites in view
RTK Status
RTK fix means the GNSS accuracy is in the highest precision mode and is suitable for taking points.
The exact accuracy can be found on the mobile app (app dependent).
This is visualized on the locator with a solid LED just above the screen.
RTK Float
RTK float means that it is using correction data but has not moved to the highest precision mode yet. Only take points in Float when Fix cannot be obtained. The exact accuracy can be found on the mobile app (app dependent).
This is visualized on the locator with a flashing LED just above the screen.
RTK Off
The MRX SG Marker is not using correction data. This could indicate an error in the NTRIP settings.
The LED above the screen is off.