General

Use this page to set the general receiver settings.

Select Receiver Configuration / General.

 

Operation Mode – Choose between Base or Rover modes.

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

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

When enabled, the pulse is available on pin 4 of the Port 4 Lemo port.

External Frequency – Select if an external 10 MHz frequency source is used if detected by the receiver.

Enable Shared Port – Sets the shared port on the receiver to be an additional serial port, a CAN bus, or a second event marker.

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.

Setting 1PPS may yield inaccurate results when the receiver is not tracking enough satellites to set time or maintain a highly accurate time solution.

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.

Event 1 On/Off – Enable or disable the first event marker function of the receiver.

Slope – Sets the first event marker to have a Positive (rising) slope or Negative (falling) slope.

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.

Internal Battery UPS – By default, this field is set to Enable. When enabled, the internal battery is used as backup to external power loss. When disabled, the internal battery will not be used as a backup to external power loss. If you disable the UPS for the internal battery, you can then set the UPS timeout period in seconds. The front screen shows a message that states the unit is powering off in xx seconds time whenever the external mains power is disconnected or turned off. Use this feature with caution.

Battery Charging Mode –

  • When ON or OFF – Providing all voltage thresholds are met, charge the receiver's internal batteries whether the receiver is ON or OFF.

  • When OFF – Providing all voltage thresholds are met, charge the receiver's internal batteries only when the receiver is OFF.

  • When ON – Providing all voltage thresholds are met, charge the receiver's internal batteries only when the receiver is ON.

  • Never – Disable charging of the receiver's internal batteries.

Battery Charging Voltage –

  • Default – The receiver's internal batteries will charge so long as the supply voltage is greater than 11.8 V DC.

  • Programmable – Battery Charging Minimum – User settable from 10.8 to 15.0 V DC.

Power Over Ethernet –

  • Enable – Enable the PoE supply for the receiver.

  • Disable – Disable the PoE supply for the receiver.

Ethernet Battery Charging –

  • Enable – Charge the receiver's internal batteries when the receiver is powered via PoE.

  • Disable – If the receiver is powered via PoE, do not change the receiver's internal batteries.

Power on Voltage –

  • Port 3 – The voltage at which the receiver will power on if powered from port 3. The range is 10.8 to 15.0 V DC. The default is 11.8 V.

  • Port 4 – The voltage at which the receiver will power on if powered from port 4. The range is 10.8 to 15.0 V DC. The default is 11.8 V.

If both port 3 and port 4 have power supplied, the receiver will choose the higher of the two supplies.

Shutdown Voltage –

  • Disable – No automatic shutdown is enabled regardless of the supply voltage levels.

  • Enable –

    • Port 3 – Voltage at which the receiver will shutdown. The range is 9.5 to 15.0 V DC. The default is 10.5 V DC.

    • Port 4 – Voltage at which the receiver will shutdown. The range is 10.0 to 15.0 V DC. The default 10.5 V DC.

Since the receiver will choose the higher of two input voltages, if both port 3 and port 4 have voltage supplied, the receiver will shut down at the higher of the two shutdown voltages.

Front Panel Display

Brightness – Sets the brightness of the front panel display as a percentage of the maximum. The available settings are 13%, 25%, 38%, 50%, 63%, 75%, 88%, and 100%.

Rotation – Rotate the front panel display and the menu controls 180 degrees. Used when the receiver is inverted for convenient mounting.

QR Code – If this option is enabled, the QR code appears when the receiver is on and the right navigation key is pressed. You can scan the QR code with a smartphone to connect to the web interface.

Power Saver –

  • Auto – If external power to the receiver is removed, the display will go into power saving mode meaning the display will not be visible until a button is pressed.

  • Enable – The displays turns off after the last button is pressed, by the time delay specified in the Power Saver field.

  • Disable – The display always remain on.

    When a SIM card is installed in the internal modem, the Power Saver mode cannot be disabled. The screen remains active for a short time and then turns off to save on power.

Power Saver Timeout – Select a time delay to turn off the receiver display. The default is 60 seconds.

Configuration –

  • Enable – Allow the front panel controls to be used to make changes to the configuration of the receiver.

  • Disable – Do not allow the front panel controls to be used to make changes to the configuration of the receiver. If disabled, the operator must use the web interface, serial ports etc to configure the receiver.

Back Lighting – Enable or disable the front panel display backlight.