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. See Setting up a base station using AutoBase technology.

  • 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.

1PPS On/Off – Enable or disable the 1PPS (one pulse-per-second) output regardless of whether or not the clock has been set, and to continue to output even after the clock is believed to have degraded.

Adjust Width – Select this check box to set the 1PPS pulse width. The range is from 160 ns to 10485600 ns. The default pulse width is 8,000 ns.

Always On – Output the 1PPS pulse even if there are no satellites received and there is no GPS time.

IonoGuard™ – Use of the IonoGuard feature during ionospheric disturbances has been proven to maintain the precision and reliability of the RTK and RTX position solution. The IonoGuard feature reduces the effects of ionosphere and scintillation on the signals.

Optimum performance is achieved when IonoGuard™ technology is enabled at both the base and rover receivers:

  • With IonoGuard enabled at the base station, ionospheric information for each satellite is transmitted via CMRx/sCMRx or RTCM MSM protocols to rover receivers. IonoGuard rover receivers use this information together with their own ionospheric measurements to optimize the computed positions

  • If IonoGuard is not enabled at the base receiver, then an IonoGuard rover receiver can operate in Fallback mode. The receiver analyzes the standard base messages and determines if ionospheric adjustments are necessary. These adjustments are used to improve positioning performance. This method is not as rigorous as having the more detailed ionospheric information sent from the base station, but can assist when using a non-Trimble ProPoint receiver or a third-party base receiver. There may be negative impacts in positioning performance when Ionospheric disturbances are not present. Trimble recommends that you do not use Fallback mode unless there is the possibility of ionospheric disturbances in your area.

  • For best results, Trimble ProPoint firmware 6.24 or later is required on the base receiver and rover receiver with IonoGuard enabled on both receivers.

IonoGuard has the following modes:

  • Enable –

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

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.

Power on Voltage –

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

Antenna LNA Voltage – Low or High.

Internal Measurement Rate