General

Use this page to set the general receiver settings.

Select Receiver Configuration / General.

 

Operation Mode – Choose between Base, Rover, or Radio modes.

  • Base – Provides base station functionality. The Motion is set to Static.

  • Rover – Provides rover functionality. The Motion is set to Kinematic.

  • Radio – Provides radio functionality.

Autobase – AutoBase will only enable CMRx correction output, but this can be manually changed to CMR+ and will be saved to the AutoBase application file.

  • Disable – When a receiver is turned on, it automatically installs the CURRENT application file and starts running, applying all previous settings.

  • Enable with Warning – After the receiver has a stable position, it uses that position to search for a base position in the stored application files in the receiver. If there is no base position within the AutoBase search distance (20 m 2D) of the current position in any of the stored application files, then a AUTOBASE FAILED warning appears so you can intervene and fix the problem. The receiver continues to use the CURRENT application file, until you update the configuration or set up a new reference base setting. If corrections are turned ON in the previously mentioned CURRENT application file, the receiver continues sending corrections with the previous base position in the CURRENT application file. If the CURRENT application file does not have any corrections set up, then there will not be any transmissions.

  • Enable without Warning – After the receiver has a stable position, it uses that position to search for a base position in the stored application files. If there is no base position within the AutoBase search distance (20 m 2D) of the current position in any of the stored application files, the receiver automatically uses the current HERE position as the base position, renaming the station name to AUTO000X, saving this information to the newly named application file, AUTO000X, and then starts transmitting the correction message from this new base position. This new configuration is saved to the CURRENT application file.

  • Enable – HERE position always – After the receiver has a stable position; it automatically uses the current HERE position as the base position, renaming the station name to AUTO000X (X is from 0 to 9 and if there are already ten saved AutoBase files, the oldest one is replaced). This information is saved in a new Application file, AUTO000X. The receiver starts transmitting correction message from this new base position. This new configuration is saved to the CURRENT Application file. In this method the receiver never searches for a base position in the stored Application files. It always uses the current HERE position as the base position.

IonoGuard™ – From v6.28/5.68, there are now three modes for IonoGuard. The goal of these changes is to make IonoGuard available by default in situations where it provides value with minimal risks. For safety, IonoGuard needs to be disabled if required. The current primary risk is very poor base station locations.

The following modes are available:

  • Disabled – The receiver will not perform any IonoGuard processing.

  • Enabled without Fallback Mode – [Default] If the base station has IonoGuard enabled, ionospheric disturbance detection runs at the base, and the disturbance information is sent to the rover receiver via RTCM/CMRx messages. If the base station does not have IonoGuard enabled, then IonoGuard is disabled at the rover.

  • Enabled with Fallback Mode – If the base station does not have IonoGuard enabled, the rover will perform ionospheric disturbance detection when the data received from the base station does not include IonoGuard messages.

Fallback mode allows the rover to calculate IonoGuard positions without receiving IonoGuard messages from the base. With Enable without Fallback mode, IonoGuard positions are only calculated if the base is transmitting IonoGuard messages. To prevent spikes in the radio throughput due to IonoGuard messaging, messages are transmitted over several epochs to smooth the bandwidth usage.

On the Satellites - Tracking Information page, an icon shows the level of ionosphere disturbance.

For information, see Trimble IonoGuard: protecting RTK GNSS from ionospheric disturbances and How Trimble IonoGuard Secures GNSS Precision Amid Rising Solar Activity on trimble.com.

NOTES – From version 6.40:

    IonoGuard. The IonoGuard feature has been enhanced when using the RTK single-baseline technique. When IonoGuard is enabled and is used under nominal conditions, improvements have been made to reduce degradations in position quality. This results in significant rover positioning improvements in situations where the base station is affected by multipath. Minor improvements have also been made to gradient estimation.

    VRS. Enhancements have been made to the scaling of ionospheric gradient data to improve rover performance during periods of high ionospheric activity.

Power on Voltage –

  • Port 1 – The voltage at which the receiver will power on if powered from port 1. The range is 10.8 to 15.0 V DC. The default is 11.8 V.